UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

________________________________________________________________
FORM 10-Q


xQUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the quarterly period ended June 30, 20182019
oTRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the transition period from ________ to ________


Commission file number 000-50368

atsglogocolora24.jpgAir Transport Services Group, Inc.
(Exact name of registrant as specified in its charter)

Delaware 26-1631624
(State of Incorporation) (I.R.S. Employer Identification No.)
145 Hunter Drive, Wilmington, OH45177
(Address of Principal Executive Offices)(Zip Code)

145 Hunter Drive, Wilmington, OH45177
937-382-5591(Address of principal executive offices)
937-382-5591
(Registrant’s telephone number, including area code)

________________________________________________________________


Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. YES x NO oYes No
Indicate by check mark whether the registrant has submitted electronically and posted on its corporate web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulations S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files). YES x NO oYes No
Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,”company” and "emerging growth company" in Rule 12b-2 of the Exchange Act.
Large accelerated filer x
Accelerated filer o
Non-acceleratedLarge Accelerated Filer
Accelerated filero (Do not check if a smaller reporting company)
Smaller reporting companyo
Non-accelerated filer
Emerging growth companyo  
If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 7(a)(2)(B)13(a) of the SecuritiesExchange Act. o
Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Act). YES o NO  xYes No  
Securities registered pursuant to Section 12(b) of the Exchange Act:
Title of each classTrading SymbolName of each exchange on which registered
Common Stock, par value $0.01 per shareATSGNASDAQ Stock Market LLC
As of August 8, 2018, 59,080,3876, 2019, 59,362,770 shares of the registrant’s common stock, par value $0.01, were outstanding.

     










AIR TRANSPORT SERVICES GROUP, INC. AND SUBSIDIARIES
FORM 10-Q
TABLE OF CONTENTS
    
    Page
PART I. FINANCIAL INFORMATION
Item 1.  
   
   
   
  
   
Item 2. 
Item 3.  
Item 4.  
   
PART II. OTHER INFORMATION
Item 1.  
Item 1A.  
Item 2.  
Item 5.  
Item 6.  









FILINGS WITH THE SECURITIES AND EXCHANGE COMMISSION
The financial information, including the financial statements, included in the Quarterly Report on Form 10-Q should be read in conjunction with the Company's audited consolidated financial statements and notes thereto included in the Company's Annual Report on Form 10-K for the year ended December 31, 2017,2018, filed with the Securities and Exchange Commission on March 1, 2018.2019.
The Securities and Exchange Commission maintains an Internet site that contains reports, proxy and information statements and other information regarding Air Transport Services Group, Inc. at www.sec.gov. Additionally, our filings with the Securities and Exchange Commission, including annual reports on Form 10-K, quarterly reports on Form 10-Q, current reports on Form 8-K and amendments to these reports, are available free of charge from our website at www.atsginc.com as soon as reasonably practicable after filing with the SEC.


FORWARD LOOKING STATEMENTS
Statements contained in this Quarterly report on Form 10-Q that are not historical facts are considered forward-looking statements (as that term is defined in the Private Securities Litigation Reform Act of 1995). Words such as “future,” “anticipates,” “believes,” “estimates,” “expects,” “intends,” “plans,” “predicts,” “will,” “would,” “could,” “can,” “may,” and similar terms and expressions are intended to identify forward-looking statements. These forward-looking statements are based on expectations, estimates and projections as of the date of this filing, and involve risks and uncertainties that are inherently difficult to predict. Actual results may differ materially from those expressed in the forward-looking statements for any number of reasons, including those described in this report and in our 20172018 Annual Report filed on Form 10-K with the Securities and Exchange Commission.








PART I. FINANCIAL INFORMATION
Item 1. Financial Statements
AIR TRANSPORT SERVICES GROUP, INC. AND SUBSIDIARIES
UNAUDITED CONDENSED CONSOLIDATED BALANCE SHEETS
(In thousands, except share data)
 June 30, December 31,
 2019 2018
ASSETS   
CURRENT ASSETS:   
Cash, cash equivalents and restricted cash$54,784
 $59,322
Accounts receivable, net of allowance of $2,716 in 2019 and $1,444 in 2018128,514
 147,755
Inventory36,477
 33,536
Prepaid supplies and other19,092
 18,608
TOTAL CURRENT ASSETS238,867
 259,221
Property and equipment, net1,650,612
 1,555,005
Lease incentive155,605
 63,780
Goodwill and acquired intangibles533,371
 535,359
Operating lease assets57,576
 
Other assets67,285
 57,220
TOTAL ASSETS$2,703,316
 $2,470,585
LIABILITIES AND STOCKHOLDERS’ EQUITY   
CURRENT LIABILITIES:   
Accounts payable$122,092
 $109,843
Accrued salaries, wages and benefits49,068
 50,932
Accrued expenses14,212
 19,623
Current portion of debt obligations39,236
 29,654
Current portion of lease obligations15,770
 
Unearned revenue18,637
 19,082
TOTAL CURRENT LIABILITIES259,015
 229,134
Long term debt1,402,782
 1,371,598
Stock warrant obligations401,441
 203,782
Post-retirement obligations59,738
 64,485
Long term lease obligations40,573
 
Other liabilities50,882
 51,905
Deferred income taxes118,076
 113,243
TOTAL LIABILITIES2,332,507
 2,034,147
Commitments and contingencies (Note H)

 

STOCKHOLDERS’ EQUITY:   
Preferred stock, 20,000,000 shares authorized, including 75,000 Series A Junior Participating Preferred Stock
 
Common stock, par value $0.01 per share; 150,000,000 shares authorized; 59,363,839 and 59,134,173 shares issued and outstanding in 2019 and 2018, respectively594
 591
Additional paid-in capital473,053
 471,158
Accumulated earnings (deficit)(19,243) 56,051
Accumulated other comprehensive loss(83,595) (91,362)
TOTAL STOCKHOLDERS’ EQUITY370,809
 436,438
TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY$2,703,316
 $2,470,585
    
See notes to condensed consolidated financial statements.

AIR TRANSPORT SERVICES GROUP, INC. AND SUBSIDIARIES
UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS
(In thousands, except per share data)
Three Months Ended Six Months EndedThree Months Ended Six Months Ended
June 30, June 30,June 30, June 30,
2018 2017 2018 20172019 2018 2019 2018
REVENUES$203,607
 $253,211
 $406,647
 $491,128
$334,576
 $203,607
 $682,759
 $406,647
OPERATING EXPENSES              
Salaries, wages and benefits74,049
 65,833
 144,832
 138,319
97,850
 74,049
 197,191
 144,832
Depreciation and amortization41,620
 37,781
 81,624
 74,223
63,266
 41,620
 125,903
 81,624
Maintenance, materials and repairs36,817
 37,588
 73,683
 67,870
39,651
 36,817
 84,389
 73,683
Fuel5,913
 32,258
 11,701
 67,099
33,984
 5,913
 68,734
 11,701
Contracted ground and aviation services2,444
 32,151
 4,828
 52,838
14,531
 2,444
 30,129
 4,828
Travel7,288
 6,820
 13,920
 14,186
20,937
 7,288
 41,035
 13,920
Landing and ramp1,311
 4,357
 2,459
 9,656
2,391
 1,311
 5,439
 2,459
Rent3,760
 3,753
 6,990
 7,039
3,984
 3,760
 7,737
 6,990
Insurance1,420
 955
 2,777
 2,217
1,857
 1,420
 3,768
 2,777
Transaction fees
 
 373
 
Other operating expenses5,087
 8,590
 12,292
 16,626
18,643
 5,087
 34,051
 12,292
179,709
 230,086
 355,106
 450,073
297,094
 179,709
 598,749
 355,106
OPERATING INCOME23,898
 23,125
 51,541
 41,055
37,482
 23,898
 84,010
 51,541
OTHER INCOME (EXPENSE)              
Interest income54
 16
 77
 48
81
 54
 177
 77
Non-service component of retiree benefit costs2,045
 (177) 4,090
 (354)
Non-service component of retiree benefit (costs) credits(2,351) 2,045
 (4,702) 4,090
Net gain (loss) on financial instruments11,697
 (67,649) 10,812
 (65,780)(35,886) 11,697
 (31,386) 10,812
Loss from non-consolidated affiliate(2,417) 
 (4,953) 
Loss from non-consolidated affiliates(5,998) (2,417) (9,814) (4,953)
Interest expense(5,366) (3,759) (10,728) (7,307)(16,804) (5,366) (34,194) (10,728)
6,013
 (71,569) (702) (73,393)(60,958) 6,013
 (79,919) (702)
              
EARNINGS (LOSS) FROM CONTINUING OPERATIONS BEFORE INCOME TAXES29,911
 (48,444) 50,839
 (32,338)(23,476) 29,911
 4,091
 50,839
INCOME TAX EXPENSE(5,447) (5,474) (10,693) (11,784)(3,156) (5,447) (8,089) (10,693)
EARNINGS (LOSS) FROM CONTINUING OPERATIONS24,464
 (53,918) 40,146
 (44,122)(26,632) 24,464
 (3,998) 40,146
EARNINGS FROM DISCONTINUED OPERATIONS, NET OF TAXES170
 192
 366
 384
31
 170
 62
 366
NET EARNINGS (LOSS)$24,634
 $(53,726) $40,512
 $(43,738)$(26,601) $24,634
 $(3,936) $40,512
              
BASIC EARNINGS (LOSS) PER SHARE       
BASIC EARNINGS PER SHARE       
Continuing operations$0.42
 $(0.91) $0.68
 $(0.75)$(0.45) $0.42
 $(0.07) $0.68
Discontinued operations
 
 0.01
 0.01

 
 
 0.01
TOTAL BASIC EARNINGS (LOSS) PER SHARE$0.42
 $(0.91) $0.69
 $(0.74)$(0.45) $0.42
 $(0.07) $0.69
              
DILUTED EARNINGS (LOSS) PER SHARE       
DILUTED EARNINGS PER SHARE��      
Continuing operations$0.21
 $(0.91) $0.48
 $(0.75)$(0.45) $0.21
 $(0.07) $0.48
Discontinued operations
 
 
 0.01

 
 
 
TOTAL DILUTED EARNINGS (LOSS) PER SHARE$0.21
 $(0.91) $0.48
 $(0.74)$(0.45) $0.21
 $(0.07) $0.48
              
WEIGHTED AVERAGE SHARES              
Basic58,739
 59,035
 58,790
 59,084
58,909
 58,739
 58,874
 58,790
Diluted68,363
 59,035
 68,784
 59,084
58,909
 68,363
 58,874
 68,784


See notes to condensed consolidated financial statements.


AIR TRANSPORT SERVICES GROUP, INC. AND SUBSIDIARIES
UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
(In thousands)
Three Months Ended Six Months EndedThree Months Ended Six Months Ended
June 30 June 30June 30, June 30,
2018 2017 2018 20172019 2018 2019 2018
NET EARNINGS (LOSS)$24,634
 $(53,726) $40,512
 $(43,738)
NET EARNINGS$(26,601) $24,634
 $(3,936) $40,512
OTHER COMPREHENSIVE INCOME (LOSS):              
Defined Benefit Pension687
 1,235
 1,374
 2,469
3,273
 687
 6,224
 1,374
Defined Benefit Post-Retirement42
 37
 84
 74
36
 42
 69
 84
Foreign Currency Translation(123) 99
 (139) 136
1,479
 (123) 1,474
 (139)
              
TOTAL COMPREHENSIVE INCOME (LOSS), net of tax$25,240
 $(52,355) $41,831
 $(41,059)
TOTAL COMPREHENSIVE INCOME, net of tax$(21,813) $25,240
 $3,831
 $41,831


See notes to condensed consolidated financial statements.




AIR TRANSPORT SERVICES GROUP, INC. AND SUBSIDIARIES
UNAUDITED CONDENSED CONSOLIDATED BALANCE SHEETSSTATEMENTS OF STOCKHOLDERS’ EQUITY
(In thousands, except share data)
 June 30, December 31,
 2018 2017
ASSETS   
CURRENT ASSETS:   
Cash and cash equivalents$31,704
 $32,699
Accounts receivable, net of allowance of $1,130 in 2018 and $2,445 in 2017100,805
 109,114
Inventory24,147
 22,169
Prepaid supplies and other13,017
 20,521
TOTAL CURRENT ASSETS169,673
 184,503
Property and equipment, net1,200,997
 1,159,962
Lease incentive72,232
 80,684
Goodwill and acquired intangibles43,999
 44,577
Convertible note hedges
 53,683
Other assets30,573
 25,435
TOTAL ASSETS$1,517,474
 $1,548,844
LIABILITIES AND STOCKHOLDERS’ EQUITY   
CURRENT LIABILITIES:   
Accounts payable$85,691
 $99,728
Accrued salaries, wages and benefits34,189
 40,127
Accrued expenses10,833
 10,455
Current portion of debt obligations14,860
 18,512
Unearned revenue15,022
 15,850
TOTAL CURRENT LIABILITIES160,595
 184,672
Long term debt505,853
 497,246
Convertible note obligations
 54,359
Stock warrant obligations203,426
 211,136
Post-retirement obligations53,032
 61,355
Other liabilities45,417
 45,353
Deferred income taxes113,571
 99,444
TOTAL LIABILITIES1,081,894
 1,153,565
Commitments and contingencies (Note H)
 
STOCKHOLDERS’ EQUITY:   
Preferred stock, 20,000,000 shares authorized, including 75,000 Series A Junior Participating Preferred Stock
 
Common stock, par value $0.01 per share; 110,000,000 shares authorized; 59,080,387 and 59,057,195 shares issued and outstanding in 2018 and 2017, respectively591
 591
Additional paid-in capital469,412
 471,456
Retained earnings (accumulated deficit)27,278
 (13,748)
Accumulated other comprehensive loss(61,701) (63,020)
TOTAL STOCKHOLDERS’ EQUITY435,580
 395,279
TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY$1,517,474
 $1,548,844
    
 Common Stock 
Additional
Paid-in
Capital
 Accumulated Earnings (Deficit) 
Accumulated
Other
Comprehensive
Income (Loss)
 Total
 Number Amount 
BALANCE AT MARCH 31, 201859,080,512
 $591
 $467,570
 $2,644
 $(62,307) $408,498
Stock-based compensation plans           
Issuance of common shares, net of withholdings1,175
 
 (12)     (12)
Forfeited restricted stock(1,300) 
 
     
Reclassification of bond hedge, net of taxes    (50,435)     (50,435)
Reclassification of note conversion obligation, net of taxes    50,999
     50,999
Amortization of stock awards and restricted stock    1,290
     1,290
Total comprehensive income      24,634
 606
 25,240
BALANCE AT JUNE 30, 201859,080,387
 $591
 $469,412
 $27,278
 $(61,701) $435,580
            
BALANCE AT JANUARY 1, 201859,057,195
 $591
 $471,456
 $(13,748) $(63,020) $395,279
Stock-based compensation plans           
Grant of restricted stock101,400
 1
 (1)     
Issuance of common shares, net of withholdings80,092
 1
 (1,333)     (1,332)
Forfeited restricted stock(1,300) 
 
     
Purchase of common stock(157,000) (2) (3,578)     (3,580)
Reclassification of bond hedge, net of taxes    (50,435)     (50,435)
Reclassification of note conversion obligation, net of taxes    50,999
     50,999
Cumulative effect in change in accounting principle      514
   514
Amortization of stock awards and restricted stock    2,304
     2,304
Total comprehensive income      40,512
 1,319
 41,831
BALANCE AT JUNE 30, 201859,080,387
 $591
 $469,412
 $27,278
 $(61,701) $435,580
            

See notes to condensed consolidated financial statements.


AIR TRANSPORT SERVICES GROUP, INC.
UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY, cont.
(In thousands, except share data)

 Common Stock Additional
Paid-in
Capital
 Accumulated Earnings (Deficit) Accumulated
Other
Comprehensive
Income (Loss)
 Total
 Number Amount 
BALANCE AT MARCH 31, 201959,351,326
 $594
 $471,245
 $7,358
 $(88,383) $390,814
Stock-based compensation plans           
Grant of restricted stock18,600
 
 
     
Issuance of common shares, net of withholdings(4,787) 
 (112)     (112)
Forfeited restricted stock(1,300) 
 
     
Amortization of stock awards and restricted stock    1,920
     1,920
Total comprehensive income (loss)      (26,601) 4,788
 (21,813)
BALANCE AT JUNE 30, 201959,363,839
 $594
 $473,053
 $(19,243) $(83,595) $370,809
            
BALANCE AT JANUARY 1, 201959,134,173
 $591
 $471,158
 $56,051
 $(91,362) $436,438
Stock-based compensation plans           
Grant of restricted stock143,800
 2
 (2)     
Issuance of common shares, net of withholdings87,166
 1
 (1,497)     (1,496)
Forfeited restricted stock(1,300) 
 
     
Cumulative effect in change in accounting principle      (71,358)   (71,358)
Amortization of stock awards and restricted stock    3,394
     3,394
Total comprehensive income      (3,936) 7,767
 3,831
BALANCE AT JUNE 30, 201959,363,839
 $594
 $473,053
 $(19,243) $(83,595) $370,809
            

See notes to condensed consolidated financial statements.



AIR TRANSPORT SERVICES GROUP, INC. AND SUBSIDIARIES
UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
(In thousands)
Six Months EndedSix Months Ended
June 30June 30,
2018 20172019 2018
OPERATING ACTIVITIES:      
Net earnings (loss) from continuing operations$40,146
 $(44,122)$(3,998) $40,146
Net earnings from discontinued operations366
 384
62
 366
Adjustments to reconcile net earnings to net cash provided by operating activities:      
Depreciation and amortization94,270
 80,097
139,516
 94,270
Pension and post-retirement1,884
 3,990
7,850
 1,884
Deferred income taxes10,475
 11,454
8,021
 10,475
Amortization of stock-based compensation2,304
 1,710
3,394
 2,304
Loss from non-consolidated affiliates9,814
 4,953
Net (gain) loss on financial instruments(10,812) 65,780
31,386
 (10,812)
Changes in assets and liabilities:      
Accounts receivable11,006
 1,905
21,235
 11,006
Inventory and prepaid supplies3,433
 (1,822)(4,242) 3,433
Accounts payable(2,067) 14,244
(3,899) (2,067)
Unearned revenue(1,504) 1,807
896
 (1,504)
Accrued expenses, salaries, wages, benefits and other liabilities(3,406) (6,793)1,874
 (3,406)
Pension and post-retirement assets(8,323) (5,847)(4,747) (8,323)
Other4,211
 1,991
2,281
 (742)
NET CASH PROVIDED BY OPERATING ACTIVITIES141,983
 124,778
209,443
 141,983
INVESTING ACTIVITIES:      
Capital expenditures(150,816) (144,325)
Expenditures for property and equipment(216,769) (150,816)
Proceeds from property and equipment17,452
 
78
 17,452
Acquisitions and investments in businesses(5,150) (646)
Redemption of long term deposits
 9,975
Acquisitions and investments in businesses, net of cash acquired(18,429) (5,150)
NET CASH (USED IN) INVESTING ACTIVITIES(138,514) (134,996)(235,120) (138,514)
FINANCING ACTIVITIES:      
Principal payments on long term obligations(29,140) (20,500)(15,938) (29,140)
Other financing payments(346) 
Proceeds from borrowings30,000
 90,000
40,000
 30,000
Payments for financing costs(414) 
(1,081) (414)
Purchase of common stock(3,581) (11,184)
 (3,581)
Withholding taxes paid for conversion of employee stock awards(1,329) (1,436)(1,496) (1,329)
NET CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES(4,464) 56,880
NET CASH (USED IN) PROVIDED BY FINANCING ACTIVITIES21,139
 (4,464)
      
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS(995) 46,662
CASH AND CASH EQUIVALENTS AT BEGINNING OF YEAR32,699
 16,358
CASH AND CASH EQUIVALENTS AT END OF PERIOD$31,704
 $63,020
CASH, CASH EQUIVALENTS AND RESTRICTED CASH:   
INCREASE (DECREASE)(4,538) (995)
BEGINNING OF YEAR59,322
 32,699
END OF PERIOD$54,784
 $31,704
      
SUPPLEMENTAL CASH FLOW INFORMATION:      
Interest paid, net of amount capitalized$6,450
 $7,101
$30,338
 $6,450
Federal alternative minimum and state income taxes paid$806
 $1,220
Income taxes paid$533
 $806
SUPPLEMENTAL NON-CASH INFORMATION:      
Accrued capital expenditures$18,755
 $12,615
Accrued expenditures for property and equipment$26,601
 $18,755
See notes to condensed consolidated financial statements.


AIR TRANSPORT SERVICES GROUP, INC. AND SUBSIDIARIES
NOTES TO UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS


NOTE A—SUMMARY OF FINANCIAL STATEMENT PREPARATION AND SIGNIFICANT ACCOUNTING POLICIES


Nature of Operations
Air Transport Services Group, Inc. is a holding company whose subsidiaries primarily operate within the airfreight and logistics industry. The Company leaseslease aircraft, and providesprovide contracted airline operations, ground services, aircraft modification and maintenance services and other support services.services mainly to the air transportation and package delivery industries. The Company's subsidiaries offer a range of complementary services to delivery companies, freight forwarders, airlines and government customers.
The Company's leasing subsidiary, Cargo Aircraft Management, Inc. (“CAM”), leases aircraft to each of the Company's airlines as well as to non-affiliated airlines and other lessees. The airlines, ABX Air, Inc. (“ABX”) and, Air Transport International, Inc. (“ATI”), Omni Air International LLC ("OAI" ) each have the authority, through their separate U.S. Department of Transportation ("DOT") and Federal Aviation Administration ("FAA") certificates, to transport cargo worldwide. The Company's airlines provideCompany provides air transportation services to a concentrated base of customers. The Company provides a combination of aircraft, crews, maintenance and insurance services for a customer's transportation network through customer "CMI" and "ACMI" agreements and through charter contracts in which aviationaircraft fuel is also included. ATI provides passenger transportation, primarilyIn addition to the U.S. Military, using "combi"its aircraft which are certified to carry passengers as well as cargo on the main deck. Through its subsidiary Airborne Maintenanceleasing and Engineering Services, Inc. ("AMES"),airline services the Company sells aircraft parts, provides aircraft maintenance and modification services. In addition, the Company provides groundservices, equipment maintenance services and operates mailarranges load transfer and package sorting facilities.services for customers.
Basis of Presentation
The financial statements of the Company are prepared in accordance with accounting principles generally accepted in the United States of America ("GAAP"). The accompanying unaudited condensed interim consolidated financial statements are prepared in conformity with accounting principles generally accepted in the United States of America and such principles are applied on a basis consistent with the financial statements reflected in our Annual Report on Form 10-K for the fiscal year ended December 31, 20172018 filed with the Securities and Exchange Commission (“SEC”). Certain information and footnote disclosures normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States of America have been condensed or omitted pursuant to the rules and regulations promulgated by the SEC related to interim financial statements. In the opinion of management, the accompanying financial statements contain all adjustments, including normal recurring adjustments, necessary for the fair presentation of the Company’s results of operations and financial position for the periods presented. Due to seasonal fluctuations, among other factors common to the air cargo industry, the results of operations for the periods presented are not necessarily indicative of the results of operations to be expected for the entire year or any interim period. The preparation of consolidated financial statements requires management to make estimates and assumptions that affect amounts reported in the consolidated financial statements. The accounting estimates reflect the best judgment of management, but actual results could differ materially from those estimates.
The accompanying condensed consolidated financial statements include the accounts of Air Transport Services Group, Inc. and its wholly-owned subsidiaries. Investments in affiliates in which the Company has significant influence but does not exercise control are accounted for using the equity method of accounting. UsingUnder the equity method, the Company’s share of the nonconsolidated affiliates'affiliate's income or loss is recognized in the consolidated statement of earnings and cumulative post-acquisition changes in the investment are adjusted against the carrying amount of the investment. Inter-company balances and transactions are eliminated.
On November 9, 2018, the Company acquired OAI, a passenger airline, along with related entities Advanced Flight Services, LLC; Omni Aviation Leasing, LLC; and T7 Aviation Leasing, LLC (referred to collectively herein as "Omni"). OAI is a leading provider of contracted passenger airlift for the U.S. Department of Defense ("DoD") via the Civil Reserve Air Fleet ("CRAF") program, and a provider of full-service passenger charter and ACMI services. OAI carries passengers worldwide for a variety of private sector customers and other government services agencies. Revenues and operating expenses include the activities of Omni for periods since their acquisition by the Company on November 9, 2018.

On February 1, 2019, the Company acquired TriFactor Solutions, LLC along with a group of companies that had been under under common control (referred to as "Trifactor"). Trifactor resells material handling equipment and provides engineering design solutions for warehousing, retail distribution and e-commerce operations. Revenues and operating expenses include the activities of TriFactor for periods since its acquisition by the Company. The acquisition of TriFactor did not have a significant impact on the Company's financial statements or results of operations.
Accounting Standards Updates
Effective January 1, 2018 the Company adopted the Financial Accounting Standards Board's ("FASB") Accounting Standards Update ("ASU") No. 2014-09, “Revenue from Contracts with Customers (Topic 606)” ("Topic 606”) which superseded previous revenue recognition guidance. Topic 606 is a comprehensive new revenue recognition model that requires a company to recognize revenue to depict the transfer of goods or services to a customer at an amount that reflects the consideration it expects to receive in exchange for those goods or services. The Company's lease revenues within the scope of ASCAccounting Standards Codification 840, Leases, ("Topic 840") are specifically excluded from Topic 606.

The Company adopted the standard using a modified retrospective approach, under which financial statements are prepared under the revised guidance for the year of adoption, but not for prior years. Under this method, entities recognize a cumulative catch-up adjustment to the opening balance of retained earnings at the effective date for open contract performance at that time. The Company's adoption efforts included the identification of revenue within the scope of the standard, the evaluation of customer contracts in conjunction with new guidance and an assessment of the qualitative and quantitative impacts of the new standard on its financial statements. The evaluation included the application of each of the five steps identified in the Topic 606 revenue recognition model.
The Company determined that under Topic 606, it is an agent for aviation fuel and certain other costs reimbursed by customers under its ACMI and CMI contracts and for certain cargo handling services that it arranges for a customer. Under the new revenue standard, such reimbursed amounts are reported net of the corresponding expenses beginning in 2018. This application of Topic 606 did not have a material impact on the Company's reported earnings in any period. Additionally under Topic 606, the Company is required to record revenue over time, instead of at the time of completion, for certain customer contracts for airframe and modification services that do not have an alternative use and for which the Company has an enforceable right to payment during the service cycle. The Company adopted the provisions of this new standard using the modified retrospective method which requires the Company to record a one time adjustment to retained deficit for the cumulative effect that the standard has on open contracts at the time of adoption. Upon adoption of the new standard the Company accelerated $3.6 million of revenue resulting in an immaterial adjustment to its January 1, 2018 retained deficit for open airframe and modification services contracts.
In January 2017, the FASB issued ASU "Intangibles-Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment" (“ASU 2017-04”). This new standard eliminates Step 2 from the goodwill impairment test and requires an entity to perform its goodwill impairment test by comparing the fair value of a reporting unit with its carrying amount. An entity recognizes an impairment charge for the amount by which the carrying amount exceeds the reporting unit’s fair value. ASU 2017-04 is effective for any annual or interim goodwill impairment tests in the fiscal years beginning after December 15, 2019 and must be applied prospectively. Early adoption is permitted for interim or annual goodwill impairment tests performed on testing dates afterEffective January 1, 2017.2019 the Company adopted the Financial Accounting Standards Board's ("FASB") Accounting Standards Update No. 2016-02, “Leases (Topic 842)” which superseded previous lease guidance ASC 840, Leases. Topic 842 is a new lease model that requires a company to recognize right-of-use (“ROU”) assets and lease liabilities on the balance sheet. The Company adopted this new accounting guidance in Januarythe standard using the modified retrospective approach that does not require the restatement of 2018.prior year financial statements. The adoption of Topic 842 did not have ana material impact on the Company’s consolidated income statement or consolidated cash flow statement. The adoption of Topic 842 resulted in the recognition of ROU assets and corresponding lease liabilities as of January 1, 2019 in the amount of $52.6 million for leases classified as operating leases. Topic 842 also applies to the Company's aircraft lease revenues, however, the adoption of Topic 842 did not have a significant impact on the Company's financial position, results of operations, or cash flows.accounting for its customer lease agreements.
In March 2017, the FASB issued ASU "Compensation - Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost "(ASU 2017-07"). ASU 2017-07 requires an employer to report the service cost component of retiree benefits in the same line item or items as other compensation costs arising from services rendered by the pertinent employees during the period. The other components of net benefit cost are required to be presented separately from the service cost component and outside a subtotal of income from operations. The Company adopted ASU 2017-07 on January 1, 2018, retrospectivelythe package of practical expedients and transition provisions available for expired or existing contracts, which allowed the Company carryforward its historical assessments of 1) whether contracts are or contain leases, 2) lease classification and 3) initial direct costs. Additionally, for real estate leases, the Company adopted the practical expedient that allows lessees to all periods presented. As a result, retiree benefit plan interest expense, investment returns, settlementstreat the lease and other non-service costnon-lease components of retiree benefit expenses are excluded fromleases as a single lease component. The Company also elected the Company's operating income subtotal as reported inhindsight practical expedient to determine the Company's Consolidated Statement of Operations, but remain included in earnings before income taxes. Information about retiree benefit plans' interest expense, investment returns and other components of retiree benefit expenses can be found in Note I.
In February 2016,reasonably certain lease term for existing leases. Further, the FASB issued ASU "Leases (Topic 842)" ("ASU 2016-02"), which will requireCompany elected the short-term lease exception policy, permitting it to exclude the recognition of right to-use-assets and lease liabilitiesrequirements for leases previously classified as operating leases by lessees. The standard will take effectwith terms of 12 months or less. See Note H for annual reporting periods beginning after December 15, 2018, including interim reporting periods. Early application will be permitted for all entities. In addition, the FASB has decided to require a lessee to apply a modified retrospective transition approach for capital and operating leases existing at, or entered into after, the beginning of the earliest comparative period presented in the financial statements (the date of initial application). The modified retrospective approach would not require any transition accounting for leases that expired before the date of initial application. The Company is currently evaluating the impact of the standard on its financial statements and disclosures.

additional information about leases.
In February 2018, the FASB issued ASU No. 2018-02 “Reclassification of Certain Tax Effects From Accumulated Other Comprehensive Income" ("ASU 2018-02"). ASU 2018-02 amends ASC 220, Income Statement - Reporting Comprehensive Income, to allow a reclassification from accumulated other comprehensive income to retained earnings for stranded tax effects resulting from U.S. federal tax legislation known as the Tax Cuts and Jobs Act. In addition, under the ASU 2018-02, a Company will be required to provide certain disclosures regarding stranded tax effects. ASU 2018-02 is effective for years beginning after December 15, 2018, and interim periods within those fiscal years. Early adoption is permitted. The Company is currently evaluating the impact of the standard on its financial statements and disclosures.elected to retain stranded tax effects in accumulated other comprehensive income.
In June 2018, the FASB issued ASU No. 2018-07 “Improvements to Non-employee Share-based Payment Accounting" ("ASU 2018-07"). ASU 2018-07 amends ASC 718, "Compensation - Stock Compensation" ("ASC 718"), to simplifywith the accounting for share-based payments granted to non-employees for goods and services. ASU 2018-07 supersedes ASC 505-50, "Equity-Based Payments to Non-employees" ("ASC 505-50"). ASU 2018-07 aligns muchintent of simplifying the accounting for share-based payments granted to non-employees for goods and services and aligning the accounting for share-based payments granted to non-employees with the accounting for share-based payments granted to employees. The Company adopted ASU 2018-07 on January 1, 2019 using the modified retrospective approach as required. ASU 2018-07 replaced ASC 505-50, "Equity-Based Payments to Non-employees" ("ASC 505-50") which was previously applied by the Company for warrants granted to Amazon.com, Inc.

("Amazon") as customer incentives. As a result of ASU 2018-07, the Company applied accounting guidance for financial instruments to the unvested warrants conditionally granted to Amazon in conjunction with an investment agreement reached with Amazon on December 22, 2018. Applying ASU 2018-07 as of January 1, 2019, through the modified retrospective approach, resulted in the recognition of $176.9 million for unvested warrant liabilities, $100.1 million for customer incentive assets and cumulative-effect adjustments of $71.4 million to reduce retained earnings for customer incentives that were not probable of being realized.
The adoption of ASU2018-07 on January 1, 2019 did not have an impact on the accounting for vested warrants.

NOTE B—GOODWILL, INTANGIBLES AND EQUITY INVESTMENTS
The Changes in the carrying amount of goodwill, by operating segment, are as follows:
  CAM ACMI Services All Other Total
Carrying value as of December 31, 2018 $153,290
 $234,571
 $2,884
 $390,745
Acquisition of TriFactor 
 
 5,229
 5,229
Carrying value as of June 30, 2019 $153,290
 $234,571
 $8,113
 $395,974

Changes in the carrying amount of acquired intangible assets are as follows (in thousands):
  Airline Amortizing  
  Certificates Intangibles Total
Carrying value as of December 31, 2018 $9,000
 $135,614
 $144,614
Amortization 
 (5,717) (5,717)
Right of use asset 
 (1,500) (1,500)
Carrying value as of June 30, 2019 $9,000
 $128,397
 $137,397

The airline certificates have an indefinite life and therefore are not amortized. The Company amortizes finite-lived intangibles assets, including customer relationship and STC intangibles, over 4 to 20 years.
The acquisition of Omni by the Company is effective for years beginning after December 15, 2018,reported in accordance with Accounting Standards Codification 805, Business Combinations, in which the total purchase price is allocated to Omni’s tangible and interim periods within those fiscal years. Early adoption is permitted. Companies will apply the new guidance to equity-classified non-employee awards for which a measurement date has not been establishedintangible assets acquired and liability-classified non-employee awards that have not been settledliabilities assumed based on their estimated fair values as of the date of adoption by recognizing a cumulative-effect adjustmentthe acquisition. The excess of the purchase price over the estimated fair value of net assets acquired was recorded as goodwill. The purchase price exceeded the fair value of the net assets acquired due to retained earningsthe strategic opportunities and expected benefits associated with adding Omni's capabilities to the Company's existing offerings in the market. The allocation of the purchase price to specific assets and liabilities is based, in part, upon preliminary valuations from internal estimates and independent appraisals.
The following table provides pro forma condensed combined financial information (in thousands) for the Company after giving effect to the Omni acquisition. This information is based on adjustments to the historical consolidated financial statements of Omni using the purchase method of accounting for business combinations. The pro forma adjustments do not include any of the cost savings and other synergies anticipated to result from the acquisition. These pro forma results have been prepared for comparative purposes only and do not purport to be indicative of results that would have actually been reported as of the date or for the quarter presented had the acquisition taken place on such date or at the beginning of the annual periodquarter indicated, or to project the Company’s financial position or results of adoption.operations which may be reported in the future.


The pro forma results exclude non-recurring charges recorded by Omni that were directly related to the acquisition by the Company. Combined results for Air Transport Services Group and Omni for the three and six month periods ended June 30, 2018 were adjusted for the following in order to create the unaudited pro forma results in the table:
  Three Months Ended Six Months Ended
  June 30, 2018 June 30, 2018
Pro forma revenues $327,801
 $633,657
Pro forma net earnings from continuing operations 32,715
 54,129

The following adjustments were made to the historical financial records to create the unaudited pro forma information in the table above:
Adjustments to eliminate transactions between the Company and Omni during the three and six month periods ended June 30, 2018.
Adjustment to reflect estimated additional depreciation and amortization expense of $2.6 million and $5.3 million for the three and six month periods ended June 30, 2018, resulting primarily from the fair value adjustments to Omni’s intangible assets. Pro forma combined depreciation expense for the periods presented reflect the increased fair values of the aircraft acquired and longer useful lives of the aircraft, indicative of the Company's policies and intent to modify certain aircraft to freighters as an aircraft is removed from passenger service.
Adjustment to reflect additional interest expense and amortization of debt issuance costs for the three and six month periods ended June 30, 2018, related to the combined $855 million from an unsubordinated term loan and revolving facility draws using the prevailing rates of 4.57%.
In January 2014, the Company acquired a 25 percent equity interest in West Atlantic AB of Gothenburg, Sweden ("West"). In April 2019, West issued additional shares to a new investor in conjunction with a capital investment and purchase agreement which reduced the Company's ownership to approximately 10% and reduced the Company's influence over West. West, through its two airlines, Atlantic Airlines Ltd. and West Air Sweden AB, operates a fleet of aircraft on behalf of European regional mail carriers and express logistics providers. The airlines operate a combined fleet of British Aerospace ATPs, Bombardier CRJ-200-PFs, and Boeing 767 and 737 aircraft. West leases three Boeing 767 aircraft and one Boeing 737 from the Company.
On August 3, 2017 the Company entered into a joint-venture agreement with Precision Aircraft Solutions, LLC, to develop a passenger-to-freighter conversion program for Airbus A321-200 aircraft. The Company is currently evaluatinganticipates approval of a supplemental type certificate from the impactFAA in 2020. The Company expects to make contributions equal to its 49% ownership percentage of the standardprogram's total costs over the next two years. During the six month periods ending June 30, 2019 and 2018, the Company contributed $6.4 million and $5.2 million to the joint venture, respectively.
The carrying value of West and the joint venture totaled $12.6 million and $12.5 million at June 30, 2019 and December 31, 2018, respectively. and are reflected in “Other Assets” in the Company’s consolidated balance sheets. The Company monitors its investments in affiliates for indicators of other-than-temporary declines in value on an ongoing basis in accordance with GAAP. If the Company determines that an other-than-temporary decline in value has occurred, it recognizes an impairment loss, which is measured as the difference between the recorded carrying value and the fair value of the investment. The fair value is generally determined using an income approach based on discounted cash flows or using negotiated transaction values.


Stock warrants issued to a lessee (see Note C) as an incentive are recorded as a lease incentive asset using their fair value at the time that the lessee has met its financial statementsperformance obligation and disclosures.amortized against revenues over the duration of related aircraft leases. The Company's lease incentive granted to the lessee was as follows (in thousands):

  Lease
  Incentive
Carrying value as of December 31, 2018 $63,780
Warrants granted 100,076
Amortization (8,251)
Carrying value as of June 30, 2019 $155,605

The lease incentive began to amortize in April 2016, with the commencement of certain aircraft leases over the duration of the related leases.

NOTE B—C—SIGNIFICANT CUSTOMERS
DHL
The Company has had long term contracts with DHL Network Operations (USA), Inc. and its affiliates ("DHL") since August 2003. Revenues from aircraft leases and related services performed for DHL were approximately 28%15% and 28%15% of the Company's consolidated revenues from continuing operations for the three and six month periods ending June 30, 2018,2019, respectively, compared to 25%28% and 26%28% for the corresponding periods of 2017. Revenues excluding directly reimbursed expenses from continuing operations performed for DHL comprised approximately 30% and 30% of the Company's consolidated revenues from continuing operations for the three and six month periods ending June 30, 2017.2018. The Company’s balance sheets include accounts receivable with DHL of $10.711.0 million and $15.713.4 million as of June 30, 20182019 and December 31, 2017,2018, respectively.
The Company leases Boeing 767 aircraft to DHL under both long-term and short-term lease agreements. Leases for eleven Boeing 767 aircraft run through March and April 2022. Under a separate crew, maintenance and insurance (“CMI”)CMI agreement, the Company operates Boeing 767 aircraft that DHL leases from the Company. Pricing for services provided through the CMI agreement is based on pre-defined fees, scaled for the number of aircraft operated and the number of flight crews provided to DHL for its U.S. network. The Company provides DHL with scheduled maintenance services for aircraft that DHL leases. The Company also provides Boeing 767 and Boeing 757 air cargo transportation services for DHL through additional ACMI agreements in which the Company provides the aircraft, crews, maintenance and insurance under a single contract. Revenues generated from the ACMI agreements are typically based on hours flown. The Company also provides ground equipment, such as power units, air starts and related maintenance services to DHL under separate agreements.
Amazon
The Company has been providing freighter aircraft and services for cargo handling and logistical support for Amazon.com Services, Inc. ("ASI"), successor to Amazon Fulfillment Services, Inc., a subsidiary of Amazon.com, Inc. ("Amazon") since September 2015. On March 8, 2016, the Company entered into an Air Transportation Services Agreement (the “ATSA”) with ASI, pursuant to which CAM leases 20 Boeing 767 freighter aircraft to ASI, including 12 Boeing 767-200 freighter aircraft for aan original term of five years and eight Boeing 767-300 freighter aircraft for aan original term of seven years. The ATSA also provides for the operation of those aircraft by the Company’s airline subsidiaries, and the management of ground services by the Company's subsidiary LGSTX Services Inc. ("LGSTX"). The ATSA became effective on April 1, 2016 and has ahad an original term of five years. CAM owns all 20 of the Boeing 767 aircraft that are leased and operated under the ATSA.

Revenues from continuing operations performed for Amazon comprised approximately 29% and 29% of the Company's consolidated revenues from continuing operations for the three and six month periods ending June 30, 2018, respectively, compared to 42% and 41% for the corresponding periods of 2017. Revenues excluding directly reimbursed expenses from continuing operations performed for Amazon comprised approximately 26% and 26% of the Company's consolidated revenues from continuing operations for the three and six month period ending June 30, 2017. The Company’s balance sheets include accounts receivable with Amazon of $34.5 million and $44.2 million as of June 30, 2018 and December 31, 2017, respectively.
In conjunction with the execution of the ATSA, the Company and Amazon entered into an Investment Agreement and a Stockholders Agreement on March 8, 2016. The Investment Agreement calls for the Company to issue warrants in three tranches which will grant Amazon the right to acquire up to 19.9% of the Company’s outstanding common shares as described below. The first tranche of warrants, issued upon the execution of the Investment Agreement and all of which are now fully vested, granted Amazon the right to purchase approximately 12.81 million ATSG common shares, with the first 7.69 million common shares vesting upon issuance on March 8, 2016, and the remaining 5.12 million common shares vesting as the Company delivered additional aircraft leased under the ATSA. The second tranche of warrants, which were issued and vested on March 8, 2018, grants Amazon the right to purchase approximately 1.59

million ATSG common shares. The third tranche of warrants will be issued and vest on September 8, 2020, and will grant Amazon the right to purchase such additional number of ATSG common shares as is necessary to bring Amazon’s ownership to 19.9% of the Company’s pre-transaction outstanding common shares measured on a GAAP-diluted basis, adjusted for share issuances and repurchases by the Company following the date of the Investment Agreement and after giving effect to the warrants granted. The exercise price of the warrants is $9.73 per share, which represents the closing price of ATSG’s common shares on February 9, 2016. Each of the three tranches of warrants are exercisable in accordance with its terms through March 8, 2021.
On December 22, 2018 the Company announced agreements with Amazon to 1) lease and operate ten additional Boeing 767-300 aircraft for ASI, 2) extend the term of the 12 Boeing 767-200 aircraft currently leased to ASI by two years to 2023 with an option for three more years, 3) extend the term of the eight Boeing 767-300 aircraft currently leased to ASI by three years to 2026 and 2027 with an option for three more years.and 4) amend and extend the ATSA by five years through March 2026, with an option to extend for an additional three years. The Company anticipates making availableplans to deliver five of the 767-300 aircraft in 2019, the first of which was leased during the second quarter, and the remainder in 2020. All ten of these aircraft leases will be for ten years.
In conjunction with the commitment for ten additional 767 aircraft leases, extensions of twenty existing Boeing 767 aircraft leases and the ATSA described above, Amazon and the Company entered another Investment Agreement on December 20, 2018. Pursuant to the 2018 Investment Agreement, Amazon will be issued warrants for up to14.8 million common shares requiredwhich could expand its potential ownership in the Company to approximately 33.2%, including the warrants described above for the underlying2016 agreements.  These new warrants throughwill vest as existing leases are extended and additional aircraft leases are executed and added to the ATSA operations. These new warrants will expire if not exercised within seven years from their issuance date. They have an exercise price of $21.53 per share, based on the volume-weighted average price of the Company's shares over the 30 trading days immediately preceding execution of a combinationnon-binding term sheet by the parties on October 29, 2018.
Additionally, Amazon will be able to earn incremental warrant rights, increasing its potential ownership from 33.2% up to approximately 39.9% of share repurchasesthe Company, by leasing up to seventeen more cargo aircraft from the Company before January 2026. Incremental warrants granted for Amazon’s commitment to any such future aircraft leases will have an exercise price based on the volume-weighted average price of the Company’s shares during the 30 trading days immediately preceding contractual commitment for each lease.
The warrants potentially issuable under these new agreements with Amazon required an increase in the number of authorized common shares of the Company. Management submitted proposals for shareholder consideration at the Company’s annual meeting of shareholders on May 9, 2019 calling for an increase in the number of authorized common shares and approval of the issuancewarrants as required under the rules of additional shares.the Nasdaq Global Select Market. Both proposals were approved by shareholders on May 9, 2019.
The Company’s accounting for the warrants has been determined in accordance with the financial reporting guidance for equity-based payments to non-employees and for financial instruments. The warrants issuedWarrants obligations are marked to Amazon as of March 8, 2016, were recorded to stockholders equity, having a fair value at the end of $4.89 per share. At that time, the faireach reporting period. The value of the 7.69 million vested warrants issued to Amazon wasis recorded as a leasecustomer incentive asset andif it is beingprobable of vesting. Upon a warrant vesting event, the customer incentive asset is amortized against revenuesas a reduction of revenue over the duration of the aircraft leases. On May 12, 2016, the Company’s stockholders approved an amendment to the Certificate of Incorporation of the Company at the annual meeting of stockholders to increase the number of authorized common sharesrelated revenue contract and to approve the warrantsfurther changes in full as required under the rules of the Nasdaq Global Select Market. The stockholders' approval enabled features of the warrants that required the vested warrants of the first tranche and the warrants of the second and third tranches to be classified as financial instruments as of May 12, 2016. Accordingly, the fair value of those warrants was measured and classified in liabilities on that date. Since May 12, 2016, 5.12 million additional warrants in the first tranche vested in conjunction with the execution of eight aircraft leases. warrant obligations are recorded to earnings.
As of June 30, 2018,2019, the Company's liabilities reflected 14.83 million warrants from 2016 Investment Agreement having a fair value of $13.72 per share. The re-measurements of$222.7 million and 24.7 million warrants from the warrants to2018 Amazon agreements having a fair value resulted in non-operating gains before the effect of income taxes of $10.8 million and $7.7 million for$178.7 million. During the three and six month periods ended June 30, 2018,2019, the re-measurements of all the warrants to fair value resulted in a net non-operating losses of $29.0 million and $20.7 million before the effect of income taxes, respectively, compared to non-operatinggains of $10.8 million and losses of $67.3 million and $65.6$7.7 million for the corresponding periods of 2017.2018.
Revenues from continuing operations performed for Amazon comprised approximately 20% and 19% of the Company's consolidated revenues from continuing operations for the three and six month periods ending June 30, 2019, respectively, compared to 29% and 29% for the corresponding periods of 2018. The Company’s balance sheets include accounts receivable with Amazon of $31.4 million and $29.2 million as of June 30, 2019 and December 31, 2018, respectively.

The Company's earnings in future periods will be impacted by the number of warrants granted, the re-measurements of warrant fair value, amortizations of the lease incentive asset and the related income tax effects. For income tax calculations, the value and timing of related tax deductions will differ from the guidance described above for financial reporting.

DoD
U.S. Military
A substantial portionThe Company is a provider of cargo and passenger airlift services to the DoD. The Company's revenues is also derived fromairlines have been providing services to the U.S. Military.DoD since the 1990's. The U.S. MilitaryDoD awards flights to U.S. certificated airlines through annual contracts and through temporary "expansion" routes. Revenues from services performed for the U.S. MilitaryDoD were approximately 11%36% and 11% of the Company's total revenues from continuing operations for the three and six month periods ending June 30, 2018, respectively, compared to 7% and 7% for the corresponding periods of 2017. Revenues excluding directly reimbursed expenses from continuing operations performed for the U.S. Military comprised approximately 10% and 10%37% of the Company's consolidated revenues from continuing operations for the three and six month periods ending June 30, 2017.2019, respectively, compared to 11% and 11% for the corresponding periods of 2018. The Company's balance sheets included accounts receivable with the U.S. MilitaryDoD of 6.0$39.0 million and 6.7$50.5 million as of June 30, 20182019 and December 31, 2017,2018, respectively.

NOTE C—GOODWILL, INTANGIBLES AND EQUITY INVESTMENTS
The Company's assets for CAM and the MRO Services segments each include goodwill. An annual impairment test was performed for each, respectively, at December, 31, 2017 using industry market multiples and discounted cash flows utilizing a market-derived rate of return (level 3 fair value inputs). Goodwill was not impaired.
The carrying amounts of goodwill are as follows (in thousands):
  CAM MRO Services Total
Carrying value as of December 31, 2017 $34,395
 $2,884
 $37,279
Carrying value as of June 30, 2018 $34,395
 $2,884
 $37,279
The Company's acquired intangible assets are as follows (in thousands):
  Airline Amortizing  
  Certificates Intangibles Total
Carrying value as of December 31, 2017 $3,000
 $4,298
 $7,298
Amortization 
 (578) (578)
Carrying value as of June 30, 2018 $3,000
 $3,720
 $6,720
The airline certificates have an indefinite life and therefore are not amortized. The Company amortizes finite-lived intangibles assets, including customer relationship and STC intangibles, over 4 to 7 years.
Stock warrants issued to a lessee (see Note B) as an incentive are recorded as a lease incentive asset using their fair value at the time that the lessee has met its performance obligation and amortized against revenues over the duration of related aircraft leases. The Company's lease incentive granted to the lessee was as follows (in thousands):
  Lease
  Incentive
Carrying value as of December 31, 2017 $80,684
Amortization (8,452)
Carrying value as of June 30, 2018 $72,232
The lease incentive began to amortize in April 2016, with the commencement of certain aircraft leases over the duration of the related leases.
In January 2014, the Company acquired a 25 percent equity interest in West Atlantic AB of Gothenburg, Sweden ("West") and in December 2017, the Company entered into a preferred equity instrument. West, through its two airlines, Atlantic Airlines Ltd. and West Air Sweden AB, operates a fleet of aircraft on behalf of European regional mail carriers and express logistics providers. The airlines operate a combined fleet of British Aerospace ATPs, Bombardier CRJ-200-PFs, and Boeing 767 and 737 aircraft. West leases three Boeing 767 aircraft and two Boeing 737 from the Company. The Company’s carrying value of West was $7.7 million and $7.1 million at June 30, 2018 and December 31, 2017,


respectively, including $5.5 million of excess purchase price over the Company's fair value of West's net assets in January of 2014. The Company's equity interest and the preferred equity instrument are reflected in “Other Assets” in the Company’s consolidated balance sheets as of June 30, 2018 and December 31, 2017.
On August 3, 2017 the Company entered into a joint-venture agreement with Precision Aircraft Solutions, LLC, to develop a passenger-to-freighter conversion program for Airbus A321-200 aircraft. The Company anticipates approval of a supplemental type certificate from the FAA in 2019. The Company expects to make contributions equal to its 49% ownership percentage of the program's total costs over the next two years. The Company accounts for its investment in the joint venture under the equity method of accounting, in which the carrying value of the investment is reduced for the Company's share of the joint ventures operating losses. The carrying value of the joint venture, reflected in “Other Assets” in the Company’s consolidated balance sheets, was $5.8 million and $5.6 million at June 30, 2018 and December 31, 2017.


NOTE D—FAIR VALUE MEASUREMENTS
The Company’s money market funds and interest rate swaps are reported on the Company’s consolidated balance sheets at fair values based on market values from identical or comparable transactions. The fair value of the Company’s money market funds, stock warrant obligations convertible note, convertible note hedges and interest rate swaps are based on observable inputs (Level 2) from comparable market transactions. The fair value of the stock warrant obligations (Level 2) were determined using a Black-Scholes pricing model which considers the Company’s common stock price and various assumptions, such as the volatility of the Company’s common stock, the expected dividend yield, and the risk-free interest rate. The fair value of the note conversion obligations and the convertible note hedges were estimated using a Black-Scholes pricing model and incorporate the terms and conditions of the underlying financial instruments. The valuations are, among other things, subject to changes in both the Company's credit worthiness and the counter-partiesAdditionally, certain warrants related to the instruments as well as change in general market conditions. While the change in fair value2018 investment agreement (see Note C) require inputs of the note conversion obligationsestimated warrant strike price and the convertible note hedges are generally expected to move in opposite directions, the net change in any given period may be material.other assumptions (Level 3).
The following table reflects assets and liabilities that are measured at fair value on a recurring basis (in thousands):
As of June 30, 2018Fair Value Measurement Using Total
As of June 30, 2019Fair Value Measurement Using Total
Level 1 Level 2 Level 3 TotalLevel 1 Level 2 Level 3 
Assets             
Cash equivalents—money market$
 $20,835
 $
 $20,835
$
 $17,104
 $
 $17,104
Interest rate swap
 4,992
 
 4,992

 218
 
 218
Total Assets$
 $25,827
 $
 $25,827
$
 $17,322
 $
 $17,322
Liabilities              
Interest rate swap$
 $(9,061) $
 $(9,061)
Stock warrant obligations
 (203,426) 
 (203,426)
 (369,485) (31,956) (401,441)
Total Liabilities$
 $(203,426) $
 $(203,426)$
 $(378,546) $(31,956) $(410,502)
As of December 31, 2018Fair Value Measurement Using Total
 Level 1 Level 2 Level 3 
Assets       
Cash equivalents—money market$
 $17,986
 $
 $17,986
Interest rate swap
 2,971
 
 2,971
Total Assets$
 $20,957
 $
 $20,957
Liabilities       
Interest rate swap$
 $(1,138) $
 $(1,138)
Stock warrant obligation
 (203,782) 
 (203,782)
Total Liabilities$
 $(204,920) $
 $(204,920)

As of December 31, 2017Fair Value Measurement Using Total
 Level 1 Level 2 Level 3 
Assets       
Cash equivalents—money market$
 $1,326
 $
 $1,326
Interest rate swap
 1,840
 
 1,840
Convertible note hedges
 53,683
 
 53,683
Total Assets$
 $56,849
 $
 $56,849
Liabilities       
Note conversion obligations
 (54,359) 
 (54,359)
Stock warrant obligation
 (211,136) 
 (211,136)
Total Liabilities$
 $(265,495) $
 $(265,495)

As a result of higher market interest rates compared to the stated interest rates of the Company’s fixed rate debt obligations, the fair value of the Company’s debt obligations, based on Level 2 observable inputs, was approximately $7.7$7.6 million less than the carrying value, which was $520.71,442.0 million at June 30, 20182019. As of December 31, 2017,2018, the fair value of the Company’s debt obligations was approximately $9.1$6.0 million moreless than the carrying value, which was $515.8$1,401.3 million. The non-financial assets, including goodwill, intangible assets and property and equipment are measured at fair value on a non-recurring basis.


NOTE E—PROPERTY AND EQUIPMENT
The Company's property and equipment consists primarily of cargo aircraft, aircraft engines and other flight equipment. Property and equipment, to be held and used, is summarized as follows (in thousands):
 
 June 30,
2019
 December 31,
2018
Flight equipment$2,389,747
 $2,340,840
Ground equipment58,821
 57,455
Leasehold improvements, facilities and office equipment29,955
 28,745
Aircraft modifications and projects in progress218,302
 74,449
 2,696,825
 2,501,489
Accumulated depreciation(1,046,213) (946,484)
Property and equipment, net$1,650,612
 $1,555,005

 June 30,
2018
 December 31,
2017
Flight equipment$1,870,120
 $1,801,808
Ground equipment54,165
 53,523
Leasehold improvements, facilities and office equipment28,660
 26,897
Aircraft modifications and projects in progress148,999
 121,760
 2,101,944
 2,003,988
Accumulated depreciation(900,947) (844,026)
Property and equipment, net$1,200,997
 $1,159,962
CAM owned aircraft with a carrying value of $751.1$758.9 million and $697.4803.7 million that were under leases to external customers as of June 30, 20182019 and December 31, 2017,2018, respectively.
The Company’s accounting policy for major airframe and engine maintenance varies by subsidiary and aircraft type. The costs of airframe maintenance for Boeing 767-200 operated by ABX are expensed as they are incurred. The costs of major airframe maintenance for the Company's other aircraft are capitalized and amortized over the useful life of the overhaul. Many of the Company's General Electric CF6 engines that power the Boeing 767-200 aircraft are maintained under “power by the hour” and "power by the cycle" agreements with an engine maintenance provider. Further, in May 2017, the Company entered into similar maintenance agreements for certain General Electric CF6 engines that power many of the Company's Boeing 767-300 aircraft. Under these agreements, the engines are maintained by the service provider for a fixed fee per cycle and/or flight hour. As a result, the cost of maintenance for these engines is generally expensed as flights occur. During their term, these maintenance agreements contain provisions for a minimum level of flight activity. Maintenance for the airlines’ other aircraft engines, including those powering Boeing 757 aircraft, are typically contracted to service providers on a time and material basis and the costs of those engine overhauls are capitalized and amortized over the useful life of the overhaul.


NOTE F—DEBT OBLIGATIONS
Debt obligations consisted of the following (in thousands):
 
 June 30, December 31,
 2019 2018
Unsubordinated term loans$705,909
 $721,406
Revolving credit facility515,000
 475,000
Convertible debt209,115
 204,846
Other financing arrangements11,994
 
Total debt obligations1,442,018
 1,401,252
Less: current portion(39,236) (29,654)
Total long term obligations, net$1,402,782
 $1,371,598
 June 30, December 31,
 2018 2017
Unsubordinated term loan$63,061
 $70,568
Revolving credit facility257,000
 245,000
Aircraft loans
 3,640
Convertible debt200,652
 196,550
Total debt obligations520,713
 515,758
Less: current portion(14,860) (18,512)
Total long term obligations, net$505,853
 $497,246

The Company executed a syndicated credit agreement ("Senior Credit Agreement") in May 2011 which includes an unsubordinated term loan and a revolving credit facility which has a capacityfacility. Effective November 9, 2018, in conjunction with the acquisition of $545.0 million. TheOmni, the Senior Credit Agreement expireswas amended. The amendment continued the secured revolving credit facility and the existing secured term loan while securing a second term loan of $675.0 million. Effective May 28, 2019, the Senior Credit Agreement was amended to extend its the expiration to May 30, 2023. Each year, through May 6, 2019,2024. This amendment also increased the capacity of revolving credit facility to $645.0 million and set the accordion feature such that the Company may request a one year extension of the final maturity date,can draw up to an additional $300.0 million subject to the lenders' consent. As of June 30, 2019, the unused revolving credit facility totaled $117.3 million, net of draws of $515.0 million and outstanding letters of credit of $12.7 million. The Senior Credit Agreement permits additional indebtedness of up to $300.0$500.0 million of which $258.8 million has been utilized for the issuance of convertible notes.

The balance of the unsubordinated term loans is net of debt issuance costs of $9.4 million and $9.8 million for the convertible debt. periods ended June 30, 2019 and December 31, 2018, respectively. Under the terms of the Senior Credit Agreement, interest rates are adjusted at least quarterly based on the Company's EBITDA, its outstanding debt level and prevailing LIBOR or prime rates. At the Company's current debt-to-EBITDA ratio, the LIBOR based financing for the unsubordinated term loans and revolving credit facility bear variable interest rates of 4.66%, 4.66% and 4.66%, respectively.
The Senior Credit Agreement is collateralized by certain of the Company's Boeing 777, 767 and 757 aircraft. Under the terms of the Senior Credit Agreement, the Company is required to maintain collateral coverage equal to 102% of the outstanding balance of the term loans and the total funded revolving credit facility. The minimum collateral coverage which must be maintained is 50% of the outstanding balance of the term loan plus the revolving credit facility commitment which was $645.0 million.
The Senior Credit Agreement limits the amount of dividends the Company can pay and the amount of common stock it can repurchase to $100.0 million during any calender year, provided the Company's total secured debt to earnings before interest, taxes, depreciation and amortization expenses ("EBITDA") ratio is under 3.00 times, after giving effect to the dividend or repurchase. As of June 30, 2018, the unused revolving credit facility totaled $278.8 million, net of draws of $257.0 million and outstanding letters of credit of $9.2 million. Additionally, the Senior Credit Agreement includes an accordion feature such that the Company can now draw up to an additional $100.0 million subject to the lenders' consent.
The Senior Credit Agreement is collateralized by certain of the Company's Boeing 767 and 757 aircraft that are not collateralized under aircraft loans. Under the terms of the Senior Credit Agreement, the Company is required to maintain collateral coverage equal to 125% of the outstanding balance of the term loan and the maximum capacity of revolving credit facility or 150% of the outstanding balance of the term loan and the total funded revolving credit facility, whichever is less. The minimum collateral coverage which must be maintained is 50% of the outstanding balance of the term loan plus the revolving credit facility commitment which was $545.0 million.
The balance of the unsubordinated term loan is net of debt issuance costs of $0.7 million and $0.7 million for the periods ending June 30, 2018 and December 31, 2017, respectively. Under the terms of the Senior Credit Agreement, interest rates are adjusted quarterly based on the Company's EBITDA, its outstanding debt level and prevailing LIBOR or prime rates. At the Company's current debt-to-EBITDA ratio, the LIBOR based financing for the unsubordinated term loan and revolving credit facility bear a variable interest rate of 3.6% and 3.6%, respectively. The aircraft loan was paid off by the Company in January 2018.
The Senior Credit Agreement contains covenants including, among other things, limitations on certain additional indebtedness, guarantees of indebtedness, as well as a total debt to EBITDA ratio and a fixed charge coverage ratio. The Senior Credit Agreement stipulates events of default, including unspecified events that may have material adverse effects on the Company. If an event of default occurs, the Company may be forced to repay, renegotiate or replace the Senior Credit Agreement.
In September 2017, the Company issued $258.8 million aggregate principal amount of 1.125% Convertible Senior Notes due 2024 ("Notes") in a private offering to qualified institutional buyers pursuant to Rule 144A under the Securities Act. The Notes bear interest at a rate of 1.125% per year payable semi-annually in arrears on April 15 and October 15 each year, beginning April 15, 2018. The Notes mature on October 15, 2024, unless repurchased or converted in accordance with their terms prior to such date. The Notes are unsecured indebtedness, subordinated to the Company's existing and future secured indebtedness and other liabilities, including trade payables. Conversion of the Notes can only occur upon satisfaction of certain conditions and during certain periods, beginning in any calendar quarter commencing after December 31, 2017 and thereafter, until the close of business on the second scheduled trading day

immediately preceding the maturity date. Upon the occurrence of certain fundamental changes, holders of the Notes can require the Company to repurchase their notes at the cash repurchase price equal to the principal amount of the notes, plus any accrued and unpaid interest.
The Notes may be settled in cash, the Company’s common shares or a combination of cash and the Company’s common shares, at the Company’s election. The initial conversion rate is 31.3475 common shares per $1,000 principal amount of Notes (equivalent to an initial conversion price of approximately $31.90 per common share). If a “make-whole fundamental change” (as defined in the offering circular with the Notes) occurs, the Company will, in certain circumstances, increase the conversion rate for a specified period of time.
In conjunction with the Notes, the Company purchased convertible note hedges under privately negotiated transactions for $56.1 million, having the same number of the Company’sCompany's common shares, 8.1 million shares and same strike price of $31.90, that underlie the Notes. The convertible note hedges are expected to reduce the potential equity dilution with respect to the Company's common stock, and/or offset any cash payments in excess of the principal amount due, as the case may be, upon conversion of the Notes. The Company's current intent and policy is to settle all Note conversions through a combination settlement which satisfies the principal amount of the Notes outstanding with cash. The Notes could have a dilutive effect on the computation of earnings per share in accordance with accounting principles to the extent that the average traded market price of the Company’s common shares for a reporting period exceeds the conversion price.
The conversion feature of the Notes required bifurcation from the principal amount under the applicable accounting guidance. Settlement provisions of the Notes and the convertible note hedges required cash settlement of these instruments until the Company's shareholders increased the number of authorized shares of common stock toto cover the full number of shares underlying the Notes. As a result, the conversion feature of the Notes and the convertible note hedges were initially accounted for as liabilities and assets, respectively, and marked to market at the end of each period. The fair value of the note conversion obligation at issuance was $57.4 million.

On May 10, 2018, the Company's shareholders increased the number of authorized shares of common stock to cover the full number of shares underlying the Notes. The Company reevaluated the Notes and convertible note hedges under the applicable accounting guidance including ASC 815, "Derivatives and Hedging," and determined that the instruments, which meet the definition of derivative and are indexed to the Company's own stock, should be classified in shareholder's equity. The fair value of the the conversion feature of the Notes and the convertible note hedges of $51.3 million and $50.6 million, respectively on May 10, 2018 were reclassified to paid-in capital.
The net proceeds from the issuance of the Notes were approximately $252.3 million, after deducting initial issuance costs. These unamortized issuance costs and discount are being amortized to interest expense through October 2024, using an effective interest rate of approximately 5.15%. The carrying value of the Company's Convertible debt is shown below:below.
  June 30, December 31,
  2019 2018
Principal value, Convertible Senior Notes, due 2024 258,750
 258,750
Unamortized issuance costs (5,336) (5,799)
Unamortized discount (44,299) (48,105)
Convertible debt 209,115
 204,846
  June 30, December 31,
  2018 2017
Principal value, Convertible Senior Notes, due 2024 258,750
 258,750
Unamortized issuance costs

 (6,255) (6,685)
Unamortized discount

 (51,843) (55,515)
Convertible debt 200,652
 196,550

In conjunction with the offering of the Notes, the Company also sold warrants to the convertible note hedge counterparties in separate, privately negotiated warrant transactions at a higher strike price and for the same number of the Company’s common shares, subject to customary anti-dilution adjustments. The amount received for these warrants and recorded in paid-in capital onStockholders' Equity in the Company’s consolidated balance sheets was $38.5 million. These warrants could have resultedresult in 8.1 million additional shares of the Company's common stock, if the Company's traded market price exceededexceeds the strike price which is $41.35 per share and is subject to certain adjustments under the terms of the warrant transactions. The warrants could have a dilutive effect on the computation of earnings per shareshares to the extent that the average traded market price of the Company’sCompany's common shares for a reporting period exceedsperiods exceed the strike price.



NOTE G—DERIVATIVE INSTRUMENTS
The Company's Senior Credit Agreement requires the Company to maintain derivative instruments for protection from fluctuating interest rates, for at least fifty percent of the outstanding balance of the original term loan.loan and twenty-five percent of the outstanding balance of the second term loan issued in November 2018. Accordingly, the Company entered into additional interest rate swaps.swaps in December 2018 and January 2019 having an initial values of $150.0 million and $150.0 million, respectively, and forward start dates of December 31, 2018 and June 28, 2019. The table below provides information about the Company’s interest rate swaps (in thousands):
   June 30, 2019 December 31, 2018
Expiration Date
Stated
Interest
Rate
 
Notional
Amount
 
Market
Value
(Liability)
 
Notional
Amount
 
Market
Value
(Liability)
May 5, 20211.090% 24,375
 213
 28,125
 650
May 30, 20211.703% 24,375
 5
 28,125
 366
December 31, 20212.706% 148,125
 (3,797) 150,000
 (1,138)
March 31, 20221.900% 50,000
 (396) 50,000
 829
March 31, 20221.950% 75,000
 (695) 75,000
 1,126
March 31, 20232.425% 150,000
 (4,173) 
 

   June 30, 2018 December 31, 2017
Expiration Date
Stated
Interest
Rate
 
Notional
Amount
 
Market
Value
(Liability)
 
Notional
Amount
 
Market
Value
(Liability)
May 5, 20211.090% 31,875
 943
 35,625
 719
May 30, 20211.703% 31,875
 570
 35,625
 240
March 31, 20221.900% 50,000
 1,444
 50,000
 416
March 31, 20221.950% 75,000
 2,035
 75,000
 465
The outstanding interest rate swaps are not designated as hedges for accounting purposes. The effects of future fluctuations in LIBOR interest rates on derivatives held by the Company will result in the recording of unrealized gains and losses into the statement of operations. The Company recorded pre-tax gainsa net loss on derivatives of $3.2$6.9 million and pre-tax losses of $0.2$10.7 million for the three and six month periods ending June 30, 2018 2019, respectively, compared to net gains of $0.8 million

and 2017, respectively.$3.2 million for the corresponding periods of 2018. The liability for outstanding derivatives is recorded in other liabilities and in accrued expenses.
The Company recorded a net loss before the effects of income taxes of $0.1$0.2 million during the sixthree month periods ending June 30,period ended March 31, 2018 for the revaluation of the convertible note hedges and the note conversion obligations to fair value before these instruments were reclassified to paid-in capital.paid-in-capital.


NOTE H—COMMITMENTS AND CONTINGENCIES
Lease CommitmentsLeases
The Company leases portionsproperty, two aircraft, aircraft engines and other types of equipment under operating leases. Property leases include hangars, warehouses, offices and other space at certain airports with fixed rent payments and lease terms ranging from one month to seven years. The Company is obligated to pay the lessor for maintenance, real estate taxes, insurance and other operating expenses on certain property leases. These expenses are variable and are not included in the measurement of the air park in Wilmington, Ohio, under lease agreementsasset or lease liability. These expenses are recognized as variable lease expense when incurred and are not material. Equipment leases include ground support and industrial equipment as well as computer hardware with a regional port authority, thefixed rent payments and terms of which expire in May of 2019one month to three years.
The Company records the initial lease asset and June of 2036 with options to extend the leases. The leased facilities include corporate offices, 310,000 square feet of maintenance hangars and a 100,000 square foot component repair shoplease liability at the air park. ABX also haspresent value of lease payments scheduled during the non-exclusive right to use the airport, which includes one active runway, taxi ways and ramp space.lease term. The Company also leases and operates a 311,500 square foot, two hangar aircraft maintenance complex in Tampa, Florida. Additionally, typically do not provide an implicit rate; therefore,the Company uses its estimated incremental borrowing rate at the time of lease commencement to discount the present value of lease payments. The Company’s average discount rate for operating leases certain equipment and airport facilities, office space, and maintenance facilities at other locations. June 30, 2019 was 4.75%. Leases often include rental escalation clauses, renewal options and/or termination options that are factored into the determination of lease payments when appropriate. Although not material, the amount of such options is reflected below in the maturity of operating lease liabilities table. Lease expense is recognized on a straight-line basis over the lease term. Our weighted-average remaining lease term is 4.3 years.
As of June 30, 2018 and2019, the maturities of operating leases liabilities are as follows (in thousands):
  Operating Leases
Remaining 2019 $18,053
2020 13,536
2021 10,010
2022 8,371
2023 5,428
2024 and beyond 7,436
Total 62,834
Less: amount representing interest (6,491)
Present value of future minimum lease payments 56,343
Less: current obligations under leases 15,770
Long-term lease obligations $40,573


As of December 31, 2017,2018, the Company did not lease any aircraft from lessors.cash flows of operating leases over the next five years were as follows (in thousands):
  Operating Leases
2019 $16,674
2020 14,586
2021 11,875
2022 5,906
2023 3,813
2024 and beyond 2,001
Total minimum lease payments $54,855

Purchase Commitments
The Company has agreements with Israel Aerospace Industries Ltd. ("IAI") for the conversion of Boeing 767 passenger aircraft into a standard configured freighter aircraft. The conversions primarily consist of the installation of a standard cargo door and loading system. At June 30, 2018,2019, the Company was committedhad non-refundable deposits of $30.3 million to acquire and modify additionalpurchase 19 Boeing 767-300 passenger aircraft into standard freighter aircraft. In addition to five aircraft that were in the modification process at June 30, 2018, the Company is committed to induct two more aircraft into the freighter modification process through 2019, including commitments to purchase two more Boeing 767-300 passenger aircraft during the second half of 2018. As of June 30, 2018, the Company's commitments to complete the conversions of aircraft it owns or has the contracts to purchase totaled $79.8 million. Additionally, theThe Company could incur a cancellation fee with IAI for unused modification part kits for any aircraft that is not inducted into conversion at IAI.kits.
Guarantees and Indemnifications
Certain leases and agreements of the Company contain guarantees and indemnification obligations to the lessor, or one or more other parties that are considered reasonable and customary (e.g. use, tax and environmental

indemnifications), the terms of which range in duration and are often limited. Such indemnification obligations may continue after expiration of the respective lease or agreement.
Other
In addition to the foregoing matters, the Company is also a party to legal proceedings in various federal and state jurisdictions from time to time arising out of the operation of the Company's business. The amount of alleged liability, if any, from these proceedings cannot be determined with certainty; however, the Company believes that its ultimate liability, if any, arising from pending legal proceedings, as well as from asserted legal claims and known potential legal claims which are probable of assertion, taking into account established accruals for estimated liabilities, should not be material to our financial condition or results of operations.
Employees Under Collective Bargaining Agreements
As of June 30, 2018,2019, the flight crewmember employees of ABX, ATI and ATIOmni and flight attendant employees of ATI and Omni were represented by the labor unions listed below:
AirlineLabor Agreement Unit
Percentage of
the Company’s
Employees
ABXInternational Brotherhood of Teamsters7.6%5.8%
ATIAir Line Pilots Association6.9%7.3%
OmniInternational Brotherhood of Teamsters6.8%
ATIAssociation of Flight Attendants1.1%0.9%
OmniAssociation of Flight Attendants7.1%




NOTE I—PENSION AND OTHER POST-RETIREMENT BENEFIT PLANS
Defined Benefit and Post-retirement Healthcare Plans
ABX sponsors a qualified defined benefit pension plan for ABX crewmembers and a qualified defined benefit pension plan for a major portion of its other ABX employees that meet minimum eligibility requirements. ABX also sponsors non-qualified defined benefit pension plans for certain employees. These non-qualified plans are unfunded. Employees are no longer accruing benefits under any of the defined benefit pension plans. ABX also sponsors a post-retirement healthcare plan for its ABX employees, which is unfunded. Benefits for covered individuals terminate upon reaching age 65 under the post-retirement healthcare plans.
The accounting and valuation for these post-retirement obligations are determined by prescribed accounting and actuarial methods that consider a number of assumptions and estimates. The selection of appropriate assumptions and estimates is significant due to the long time period over which benefits will be accrued and paid. The long term nature of these benefit payouts increases the sensitivity of certain estimates of our post-retirement costs. The assumptions considered most sensitive in actuarially valuing ABX’s pension obligations and determining related expense amounts are discount rates and expected long term investment returns on plan assets. Additionally, other assumptions concerning retirement ages, mortality and employee turnover also affect the valuations. Actual results and future changes in these assumptions could result in future costs significantly higher than those recorded in our results of operations.
ABX measures plan assets and benefit obligations as of December 31 of each year. Information regarding ABX’s sponsored defined benefit pension plans and post-retirement healthcare plans follow below. The accumulated benefit obligation reflects pension benefit obligations based on the actual earnings and service to-date of current employees.

The Company’sCompany's net periodic benefit costs for its defined benefit pension plans and post-retirement healthcare plans for both continuing and discontinued operations are as follows (in thousands):
 Three Months Ended June 30, Six Months Ended June 30,
 Pension Plans Post-Retirement Healthcare Plan Pension Plans Post-Retirement Healthcare Plan
 2019 2018 2019 2018 2019 2018 2019 2018
Service cost$
 $
 $27
 $30
 $
 $
 $54
 $60
Interest cost7,825
 7,284
 37
 32
 15,649
 14,568
 74
 64
Expected return on plan assets(9,477) (10,523) 
 
 (18,954) (21,046) 
 
Amortization of net loss3,882
 887
 43
 55
 7,764
 1,774
 86
 110
Net periodic benefit cost (income)$2,230
 $(2,352) $107
 $117
 $4,459
 $(4,704) $214
 $234

 Three Months Ended June 30, Six Months Ended June 30,
 Pension Plans Post-Retirement Healthcare Plan Pension Plans Post-Retirement Healthcare Plan
 2018 2017 2018 2017 2018 2017 2018 2017
Service cost$
 $
 $30
 $39
 $
 $
 $60
 $78
Interest cost7,284
 8,775
 32
 36
 14,568
 17,550
 64
 72
Expected return on plan assets(10,523) (10,930) 
 
 (21,046) (21,859) 
 
Amortization of prior service cost
 
 
 (13) 
 
 
 (26)
Amortization of net (gain) loss887
 1,937
 55
 71
 1,774
 3,874
 110
 142
Net periodic benefit cost (income)$(2,352) $(218) $117
 $133
 $(4,704) $(435) $234
 $266
During the six month period ending June 30, 2018,2019, the Company contributed $1.81.4 million to the pension plans. The Company expects to contribute an additional $20.7$6.7 million during the remainder of 2018.2019.


NOTE J—INCOME TAXES
The provision for income taxes for interim periods is based on management's best estimate of the effective income tax rate expected to be applicable for the current year, plus any adjustments arising from changes in the estimated amount of taxable income related to prior periods. Federal legislation known as the The Tax Cuts and Jobs Acts ("Tax Act") was enacted on December 22, 2017. The Tax Act reduces the U.S. federal corporate tax rate from the previous rate of 35% to 21% effective January 1, 2018. The Tax Act also makes broad and complex changes to the U.S. tax code, including, but not limited to a one time tax on earnings of certain foreign subsidiaries, limitations of net operating loss carryforwards created in tax years beginning after December 31, 2017, bonus depreciation for full expensing of qualified property, and limitations on the deductibility of certain executive compensation. The Company will continue to refine the calculations as additional analysis is completed and the Company gains a more thorough understanding of the Tax Act, including the tax law related to the deductibility of purchased assets, state tax treatment, and amounts related to employee compensation.
Income tax expensetaxes recorded through June 30, 2018 utilized2019 have been estimated utilizing a 25% rate based upon year-to-date income and projected annualized 24.3%results for the full year. The recognition of discrete tax items, such as the conversion of employee stock awards, the issuance of stock warrants and other items, have an impact on the effective rate applied to year-to-date income. Additionally,during a period.
During 2019, the Company recorded discrete tax items for the conversion of employee stock awards, duringlimitations on the first quarterdeductibility of 2018, resultingexecutive compensation and gains and losses on warrant revaluations which were not subject to tax. During 2019, the Company recorded a valuation allowance against a deferred tax benefit related to a foreign investment. As a result of these differences in anwhich expenses and benefits for tax purposes are different than required by generally accepted accounting principals, the Company's effective tax rate for the first six months of 21.0%2019 was 194%. The final effective tax rate applied to 2018for the year 2019 will depend on the actual amount of pre-tax book results by the Company for the full year, the additional conversions of employee stock awards, issuance of stock warrantswarrant valuations, executive compensation and other items.

The Company has operating loss carryforwards for U.S. federal income tax purposes. Management expects to utilize the loss carryforwards to offset federal income tax liabilities in the future. Due to the Company's deferred tax assets, including its loss carryforwards, management does not expect to pay federal income taxes until 20232024 or later. The Company may, however, be required to pay some federal tax due to loss carryforward usage limitations and certain state and local income taxes before then.



NOTE K—ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS)
Accumulated other comprehensive income (loss) includes the following items by components for the three and six month periods ending June 30, 20182019 and 20172018 (in thousands):
 Defined Benefit Pension Defined Benefit Post-Retirement Foreign Currency Translation Total Defined Benefit Pension Defined Benefit Post-Retirement Foreign Currency Translation Total
Balance as of March 31, 2017 (75,854) (1,264) (1,440) (78,558)
Balance as of March 31, 2018 $(59,888) $(1,055) $(1,364) $(62,307)
Other comprehensive income (loss) before reclassifications:                
Foreign currency translation adjustment 
 
 152
 152
 
 
 (186) (186)
Amounts reclassified from accumulated other comprehensive income:                
Actuarial costs (reclassified to non-service costs) 1,937
 71
 
 2,008
Negative prior service cost 
 (13) 
 (13)
Actuarial costs (reclassified to salaries, wages and benefits) 887
 55
 
 942
Income Tax (Expense) or Benefit (702) (21) (53) (776) (200) (13) 63
 (150)
Other comprehensive income (loss), net of tax 1,235
 37
 99
 1,371
 687
 42
 (123) 606
Balance as of June 30, 2017 (74,619) (1,227) (1,341) (77,187)
Balance as of June 30, 2018 $(59,201) $(1,013) $(1,487) $(61,701)
                
 Defined Benefit Pension Defined Benefit Post-Retirement Foreign Currency Translation Total
Balance as of December 31, 2016 (77,088) (1,301) (1,477) (79,866)
Balance as of January 1, 2018 $(60,575) $(1,097) $(1,348) $(63,020)
Other comprehensive income (loss) before reclassifications:                
Foreign currency translation adjustment 
 
 210
 210
 
 
 (211) (211)
Amounts reclassified from accumulated other comprehensive income:                
Actuarial costs (reclassified to non-service costs) 3,874
 142
 
 4,016
Negative prior service cost 
 (26) 
 (26)
Actuarial costs (reclassified to salaries, wages and benefits) 1,774
 110
 
 1,884
Income Tax (Expense) or Benefit (1,405) (42) (74) (1,521) (400) (26) 72
 (354)
Other comprehensive income (loss), net of tax 2,469
 74
 136
 2,679
 1,374
 84
 (139) 1,319
Balance as of June 30, 2017 (74,619) (1,227) (1,341) (77,187)
Balance as of June 30, 2018 $(59,201) $(1,013) $(1,487) $(61,701)


  Defined Benefit Pension Defined Benefit Post-Retirement Foreign Currency Translation Total
Balance as of March 31, 2019 $(86,091) $(808) $(1,484) $(88,383)
Other comprehensive income (loss) before reclassifications:        
Foreign currency translation adjustment 
 
 (4) (4)
Amounts reclassified from accumulated other comprehensive income:        
Recognition of foreign currency loss 
 
 2,253
 2,253
Actuarial costs (reclassified to salaries, wages and benefits) 3,882
 43
 
 3,925
Income Tax (Expense) or Benefit (609) (7) (770) (1,386)
Other comprehensive income (loss), net of tax 3,273
 36
 1,479
 4,788
Balance as of June 30, 2019 $(82,818) $(772) $(5) $(83,595)
         
Balance as of January 1, 2019 $(89,042) $(841) $(1,479) $(91,362)
Other comprehensive income (loss) before reclassifications:        
Foreign currency translation adjustment 
 
 (11) (11)
Amounts reclassified from accumulated other comprehensive income:        
Recognition of foreign currency loss 
 
 2,253
 2,253
Actuarial costs (reclassified to salaries, wages and benefits) 7,764
 86
 
 7,850
Income Tax (Expense) or Benefit (1,540) (17) (768) (2,325)
Other comprehensive income (loss), net of tax 6,224
 69
 1,474
 7,767
Balance as of June 30, 2019 $(82,818) $(772) $(5) $(83,595)

  Defined Benefit Pension Defined Benefit Post-Retirement Foreign Currency Translation Total
Balance as of March 31, 2018 (59,888) (1,055) (1,364) (62,307)
Other comprehensive income (loss) before reclassifications:        
Foreign currency translation adjustment 
 
 (186) (186)
Amounts reclassified from accumulated other comprehensive income:        
Actuarial costs (reclassified to non-service costs) 887
 55
 
 942
Income Tax (Expense) or Benefit (200) (13) 63
 (150)
Other comprehensive income (loss), net of tax 687
 42
 (123) 606
Balance as of June 30, 2018 (59,201) (1,013) (1,487) (61,701)
         
  Defined Benefit Pension Defined Benefit Post-Retirement Foreign Currency Translation Total
Balance as of December 31, 2017 (60,575) (1,097) (1,348) (63,020)
Other comprehensive income (loss) before reclassifications:        
Foreign currency translation adjustment 
 
 (211) (211)
Amounts reclassified from accumulated other comprehensive income:        
Actuarial costs (reclassified to non-service costs) 1,774
 110
 
 1,884
Income Tax (Expense) or Benefit (400) (26) 72
 (354)
Other comprehensive income (loss), net of tax 1,374
 84
 (139) 1,319
Balance as of June 30, 2018 (59,201) (1,013) (1,487) (61,701)



NOTE L—STOCK-BASED COMPENSATION
The Company's Board of Directors has granted stock incentive awards to certain employees and board members pursuant to a long term incentive plan which was approved by the Company's stockholders in May 2005 and in May 2015. Employees have been awarded non-vested stock units with performance conditions, non-vested stock units with market conditions and non-vested restricted stock. The restrictions on the non-vested restricted stock awards lapse at the end of a specified service period, which is typically three years from the date of grant. Restrictions could lapse sooner upon a business combination, death, disability or after an employee qualifies for retirement. The non-vested stock units will be converted into a number of shares of Company stock depending on performance and market conditions at the end of a specified service period, lasting approximately three years. years. The performance condition awards will be converted into a number of shares of Company stock based on the Company's average return on invested capital during the service period. Similarly, the market condition awards will be converted into a number of shares depending on the appreciation of the Company's stock compared to the NASDAQ Transportation Index. Board members were granted time-based awards with vesting periods of approximately six or twelve months. The Company expects to settle all of the stock unit awards by issuing new shares of stock. The table below summarizes award activity.
 Six Months Ended
 June 30, 2019 June 30, 2018
 
Number of
Awards
 
Weighted
average
grant-date
fair value
 
Number of
Awards
 
Weighted
average
grant-date
fair value
Outstanding at beginning of period969,928
 $15.89
 873,849
 $12.30
Granted295,096
 23.22
 207,295
 26.50
Converted(153,464) 17.29
 (96,616) 10.89
Expired(5,600) 23.78
 (500) 28.38
Forfeited(2,600) 22.16
 (2,600) 26.76
Outstanding at end of period1,103,360
 $17.61
 981,428
 $15.39
Vested337,060
 $8.04
 326,928
 $7.18

 Six Months Ended
 June 30, 2018 June 30, 2017
 
Number of
Awards
 
Weighted
average
grant-date
fair value
 
Number of
Awards
 
Weighted
average
grant-date
fair value
Outstanding at beginning of period873,849
 $12.30
 1,040,569
 $9.97
Granted207,295
 26.50
 243,940
 17.52
Converted(96,616) 10.89
 (173,210) 9.69
Expired(500) 28.38
 
 
Forfeited(2,600) 26.76
 (3,800) 13.66
Outstanding at end of period981,428
 $15.39
 1,107,499
 $11.66
Vested326,928
 $7.18
 324,599
 $6.39
The average grant-date fair value of each performance condition award, non-vested restricted stock award and time-based award granted by the Company in 20182019 was $25.1522.80, the fair value of the Company’s stock on the date of grant. The average grant-date fair value of each market condition award granted in 20182019 was $31.60.$24.75. The market condition awards were valued using a Monte Carlo simulation technique, a risk-free interest rate of 2.4%2.5% and a volatility of 33.8%35.6% based on volatility over three years using daily stock prices.
For the sixthree month periods ending June 30, 20182019 and 2017,2018, the Company recorded expense of $3.4 million and $2.3 million and $1.7 million, respectively, for stock incentive awards. At June 30, 2018,2019, there was $7.2$10.1 million of unrecognized expense related to the stock incentive awards that is expected to be recognized over a weighted-average period of 1.6 years. As of June 30, 2018,2019, none of the awards were convertible, 326,928337,060 units of the Board membersmembers' time-based awards had vested and none of the outstanding shares of the restricted stock had vested. These awards could result in a maximum number of 1,216,4781,341,035 additional outstanding shares of the Company’s common stock depending on service, performance and market results through December 31, 2020.2021.




NOTE M—COMMON STOCK AND EARNINGS PER SHARE
Earnings per Share
The calculation of basic and diluted earnings per common share are as follows (in thousands, except per share amounts):
 Three Months Ending Six Months Ending
 June 30, June 30,
 2019 2018 2019 2018
Numerator:       
Earnings (loss) from continuing operations - basic$(26,632) $24,464
 $(3,998) $40,146
Gain from stock warrants revaluation, net of tax
 (10,448) 
 (7,473)
Earnings (loss) from continuing operations - diluted$(26,632) $14,016
 $(3,998) $32,673
        
Denominator:       
Weighted-average shares outstanding for basic earnings per share58,909
 58,739
 58,874
 58,790
Common equivalent shares:       
Effect of stock-based compensation awards and warrants
 9,624
 
 9,994
Weighted-average shares outstanding assuming dilution58,909
 68,363
 58,874
 68,784
Basic earnings (loss) per share from continuing operations$(0.45) $0.42
 $(0.07) $0.68
Diluted earnings (loss) per share from continuing operations$(0.45) $0.21
 $(0.07) $0.48
 Three Months Ending Six Months Ending
 June 30, June 30,
 2018 2017 2018 2017
Numerator:       
Earnings (loss) from continuing operations - basic$24,464
 $(53,918) $40,146
 $(44,122)
Gain from stock warrants revaluation, net of tax(10,448) 
 (7,473) 
Earnings (loss) from continuing operations - diluted$14,016
 $(53,918) $32,673
 $(44,122)
        
Denominator:       
Weighted-average shares outstanding for basic earnings per share58,739
 59,035
 58,790
 59,084
Common equivalent shares:       
Effect of stock-based compensation awards and warrants9,624
 
 9,994
 
Weighted-average shares outstanding assuming dilution68,363
 59,035
 68,784
 59,084
Basic earnings per share from continuing operations$0.42
 $(0.91) $0.68
 $(0.75)
Diluted earnings per share from continuing operations$0.21
 $(0.91) $0.48
 $(0.75)

The determination of diluted earnings per share requires the exclusion of the fair value re-measurement of the stock warrants recorded as a liability (see Note B)C), if such warrants have a anti-dilutive effect on earnings per share. The dilutive effect of the weighted-average diluted shares outstanding is calculated using the treasury method for periods in which equivalent shares have a dilutive effect on earnings per share. Under this method, the number of diluted shares is determined by dividing the assumed proceeds of the warrants recorded as a liability by the average stock price during the period and comparing that amount with the number of corresponding warrants outstanding.
The underlying warrants recorded as a liability as of June 30, 2017, could result2019 and 2018 would have resulted in 13.639.5 million and 14.8 million additional shares of the Company's common stock, respectively, if the warrants arewere settled by tendering cash.
The number of equivalent shares that were not included in weighted average shares outstanding assuming dilution because their effect would have been anti-dilutive, were 8.510.9 million and 7.210.8 million for the three and six month periods ended June 30, 2017,2019, respectively.



NOTE N—SEGMENT AND REVENUE INFORMATION
The Company operates in threetwo reportable segments. The CAM segment consists of the Company's aircraft leasing operations and its segment earnings include an allocation of interest expense. Thewhile the ACMI Services segment consists of the Company's airline operations, including CMI agreements as well as ACMI, charter service and charterpassenger service agreements that the Company has with its customers. The MRO Services segment provides airframeCompany's aircraft maintenance services, aircraft modifications and other maintenance services. The MRO Services became reportable during 2018 due to the size of its revenues. Prior periods presented below have been prepared by separating MRO Services from "All other" for comparative purposes. The Company'smodification services, ground services and other activities which include the mail and package sorting services, maintenance services for ground equipment, facilities and material handling equipment, the sales of aviation fuel and other services, are not large enough to constitute reportable segments and are combined in All other. Inter-segmentIntersegment revenues are valued at arms-length market rates. Cash and cash equivalents are reflected in Assets - All other below.
The Company's segmentRevenue information for revenue from continuing operations is presented below (in thousands):
 Three Months Ending Six Months Ending
 June 30, June 30,
 2019 2018 2019 2018
Total revenues:       
CAM$69,256
 $54,377
 $139,606
 $106,753
ACMI Services254,938
 119,606
 512,894
 238,980
All other71,104
 65,361
 138,466
 137,259
Eliminate inter-segment revenues(60,722) (35,737) (108,207) (76,345)
Total$334,576
 $203,607
 $682,759
 $406,647
Customer revenues:       
CAM$39,953
 $38,016
 $81,562
 $73,903
ACMI Services254,869
 119,589
 512,822
 238,963
All other39,754
 46,002
 88,375
 93,781
Total$334,576
 $203,607
 $682,759
 $406,647
 Three Months Ending Six Months Ending
 June 30, June 30,
 2018 2017 2018 2017
Total revenues:       
CAM$54,377
 $49,530
 $106,753
 $97,508
ACMI Services119,606
 144,499
 238,980
 289,448
MRO Services45,794
 66,336
 98,517
 106,674
All other19,730
 50,172
 39,013
 99,040
Eliminate inter-segment revenues(35,900) (57,326) (76,616) (101,542)
Total$203,607
 $253,211
 $406,647
 $491,128
Customer revenues:       
CAM$38,016
 $32,380
 $73,903
 $63,162
ACMI Services119,589
 144,499
 238,963
 289,448
MRO Services29,069
 31,159
 60,009
 56,576
All other16,933
 45,173
 33,772
 81,942
Total$203,607
 $253,211
 $406,647
 $491,128
The Company adopted Topic 606 for revenue recognition using a modified retrospective approach, under which financial statements are prepared under the revised guidance for the year of adoption, but not for prior years. The effects of Topic 606 on the Company's customer revenues are summarized below:
  For the three months ending For the six months ending
  June 30, 2018 June 30, 2018
  Revenue Revenue
  As Reported Without Topic 606 Increase (decrease) As Reported Without Topic 606 Increase (decrease)
ACMI Services $119,589
 $167,724
 $(48,135) $238,963
 $336,272
 $(97,309)
MRO Services 29,069
 28,549
 520
 60,009
 54,918
 5,091
Other (ground services) 16,933
 62,682
 (45,749) 33,772
 130,868
 (97,096)


ACMI Services revenues are generated from airline service agreements and are typically based on hours flown, the amount of aircraft operated and crew resources provided during a month. ACMI Services revenues are recognized over time using the invoice practical expedient as flight hours are performed for the customer. Certain agreements include provisions for incentive payments

based upon on-time reliability. These incentives are measured on a monthly basis and recorded to revenue in the corresponding month earned. Under CMI agreements, the Company's airlines have an obligation to provide integrated services including flight crews, aircraft maintenance and insurance for the customer's cargo network. Under ACMI agreements, the Company's airlines are also obligated to provide aircraft. Under CMI and ACMI agreements, customers are generally responsible for aviation fuel, landing fees, navigation fees and certain other flight expenses. When functioning as the customerscustomers' agent for arranging such services, the Company records amounts reimbursable from the customer as revenues net of the related expenses as the costs are incurred. Under charter agreements the Company's airline is obligated to provide full services for one or more flights having specific origins and destinations. Under charter agreements in which the Company's airline is responsible for fuel, airport fees and all flight services, the related costs are recorded in operating expenses. ACMI Services are invoiced monthly or more frequently. (There are no customer rewards programs associated with services offered by the Company nor does the Company sell passenger tickets or issue freight bills.)
MRO ServicesThe Company's revenues for customer contracts for airframe maintenance and aircraft modification services that do not have an alternative use and for which the Company has an enforceable right to payment are generally recognized over time based on the percentage of costs completed. Other MRO Services revenues for aircraft part sales, component repairs and line service are recognized at a point in time typically when the parts are delivered to the customer and the the services are completed. For airframe maintenance, aircraft modifications and aircraft component repairs, contracts include assurance warranties that are not sold separately.
Effective January 1, 2018 the The Company records revenues and estimated earnings over time for its airframe maintenance and aircraft modification contracts using the percentage-of-completion cost-to-costcost input method. For such services, the Company estimates the earnings on a contract as the difference between the expected revenue and estimated costs to complete a contract and recognizes revenues and earnings based on the proportion of costs incurred compared to the total estimated costs. The Company's estimates consider the timing and extent of the services, including the amount and rates of labor, materials and other resources required to perform the services. The Company

recognizes adjustments in estimated earnings on a contract under the cumulative catch-up method in which the impact of the adjustment on estimated earnings of a contract is recognized in the period the adjustment is identified.
The Company's external customerground services revenues for providing mailinclude load transfer and package sorting services and related facility and equipment maintenance for the three and six month periods ending June 30, 2018 were $16.2 million and $32.3 million, respectively, compared to $44.7 million and $80.9 million for the corresponding periods in 2017. During the three and six month periods ended June 30, 2018, the Company netted $45.7 million and $97.1 million of customer reimbursable revenues against the related expenses when functioning as the customers agent for arranging ground services, respectively.services. These revenues are reported in All other. The Company's external customer revenues from providing mail and package sorting services are recognized as the services are performed for the customer over time. Revenues from related facility and equipment maintenance services are recognized over time and at a point in time depending on the nature of the customer contracts.
Revenue is not recognized until collectibility ofThe Company's external customer payment is probable. For customers that are not a governmental agency or department, the Company generally receives partial payment in advance of services, otherwise customer balances are typically paid within 30 to 60 days of service. Forrevenues from other activities for the three and six month periods ended June 30, 2019 and 2018 the Company recognized $3.4 million and $8.0 million of non lease revenue that was reported in deferred revenue at the beginning of the respective period.are presented below (in thousands):
  Three Months Ended Six Months Ended
  June 30, 2019 June 30, 2019
  2019 2018 2019 2018
Aircraft maintenance, modifications and part sales $23,303
 $29,069
 $57,284
 $60,008
Ground services 15,775
 16,159
 29,713
 32,313
Other 676
 774
 1,378
 1,460
Total customer revenues $39,754
 $46,002
 $88,375
 $93,781

CAM's aircraft lease revenues are recognized as operating lease revenues on a straight-line basis over the term of the applicable lease agreements. Customer payments for leased aircraft and equipment are typically paid monthly in advance. CAM's leases do not contain residual guarantees. Approximately 5% of CAM's leases to external customers contain purchase options at projected market values. As of June 30, 2019, minimum future payments from external customers for leased aircraft and equipment were scheduled to be $84.7 million for the remainder of 2019, $163.3 million, $157.5 million, $131.3 million, $88.2 million respectively for each of the next 4 years years ending December 31, 2023 and $139.9 million thereafter. Minimum future payments from external customers for leased aircraft and equipment as of December 31, 2018 was scheduled to be $142.3 million, $127.1 million, $124.3 million, $121.2 million , $87.1 million for each of the next five years ending December 31, 2023 and $119.8 million thereafter.

For customers that are not a governmental agency or department, the Company generally receives partial payment in advance of services, otherwise customer balances are typically paid within 30 to 60 days of service. During the three and six month periods ending June 30, 2019, the Company recognized $0.6 million and $2.8 million of non lease revenue that was reported in deferred revenue at the beginning of the respective period, respectively, compared to $3.4 million and $8.0 million in the corresponding periods of 2018. Deferred revenue was $1.5 million and $3.1 million at June 30, 2019 and December 31, 2018, respectively, for contracts with customers.



The Company's otherAdditional segment information from continuing operations is presented below (in thousands):
 Three Months Ending Six Months Ending
 June 30, June 30,
 2019 2018 2019 2018
Depreciation and amortization expense:       
CAM$38,723
 $30,540
 $77,518
 $59,465
ACMI Services23,865
 10,327
 46,960
 20,552
All other678
 753
 1,425
 1,607
Total$63,266
 $41,620
 $125,903
 $81,624
Segment earnings (loss):       
CAM$16,683
 $15,394
 $32,857
 $30,858
ACMI Services973
 500
 13,283
 3,915
     All other4,006
 3,039
 5,909
 6,757
Net unallocated interest expense(903) (347) (1,683) (640)
Net loss on financial instruments(35,886) 11,697
 (31,386) 10,812
Transaction fees
 
 (373) 
Other non-service components of retiree benefit (costs) credits, net(2,351) 2,045
 (4,702) 4,090
Loss from non-consolidated affiliate(5,998) (2,417) (9,814) (4,953)
Pre-tax earnings from continuing operations$(23,476) $29,911
 $4,091
 $50,839

 Three Months Ending Six Months Ending
 June 30, June 30,
 2018 2017 2018 2017
Depreciation and amortization expense:       
CAM$30,540
 $26,253
 $59,465
 $50,554
ACMI Services10,327
 10,491
 20,552
 21,563
MRO Services830
 685
 1,680
 1,359
All other(77) 352
 (73) 747
Total$41,620
 $37,781
 $81,624
 $74,223
Segment earnings (loss):       
CAM$15,394
 $12,795
 $30,858
 $26,125
ACMI Services991
 258
 4,932
 (3,276)
MRO Services1,321
 11,103
 5,783
 14,291
     All other2,749
 1,400
 5,330
 3,863
Inter-segment earnings eliminated(1,031) (5,958) (4,356) (6,820)
Net unallocated interest expense(838) (216) (1,657) (387)
Net gain (loss) on financial instruments11,697
 (67,649) 10,812
 (65,780)
Other non-service components of retiree benefit costs, net2,045
 (177) 4,090
 (354)
Loss from non-consolidated affiliate(2,417) 
 (4,953) 
Pre-tax earnings from continuing operations$29,911
 $(48,444) $50,839
 $(32,338)
The Company's assets are presented below by segment (in thousands):
 June 30 December 31
 2018 2017
Assets:   
CAM$1,214,986
 $1,192,890
ACMI Services190,309
 189,379
MRO Services99,129
 87,177
All other13,050
 79,398
Total$1,517,474
 $1,548,844
Interest expense allocated to CAM was $4.5$9.4 million and $9.0$19.3 million for the three and six month periods ending June 30, 2018,2019, respectively, compared to $3.5$4.5 million and $6.9$9.0 million for the corresponding periods of 2017.2018. Interest expense allocated to ACMI Services was $6.4 million and $13.0 million for the three and six month periods ending June 30, 2019, respectively, compared to $0.5 million and $1.0 million for the corresponding periods of 2018.

The Company's assets are presented below by segment (in thousands). Cash and cash equivalents are reflected in Assets - All other.
 June 30, December 31,
 2019 2018
Assets:   
CAM$1,782,950
 $1,577,182
ACMI Services751,373
 759,131
All other168,993
 134,272
Total$2,703,316
 $2,470,585




ITEM 2. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS
The following Management’s Discussion and Analysis has been prepared with reference to the historical financial condition and results of operations of Air Transport Services Group, Inc., and its subsidiaries. Air Transport Services Group, Inc. and its subsidiaries may hereinafter individually and collectively be referred to as "the Company", "we", "our" or "us" from time to time. The following discussion and analysis describes the principal factors affecting the results of operations, financial condition, cash flows, liquidity and capital resources. It should be read in conjunction with the accompanying unaudited condensed consolidated financial statements and the related notes prepared in accordance with accounting principles generally accepted in the United States of America ("GAAP") contained in this report and our Annual Report on Form 10-K for the year ended December 31, 2017.2018.


INTRODUCTION
The Company leasesWe lease aircraft provides air cargo transportation and performsprovide airline operations, aircraft modification and maintenance services, ground services, and other support services primarily to the air cargo transportation and package deliverylogistics industries. Through the Company's subsidiaries, we offer a range of complementary services to delivery companies, freight forwarders, e-commerce operators, airlines and government customers. Our principal subsidiaries include ABX Air, Inc. (“ABX”), Air Transport International, Inc. (“ATI”), Cargo Aircraft Management, Inc. (“CAM”) and Airborne Maintenance and Engineering Services, Inc. ("AMES"). ABX and ATI are twothree independently certificated airlines.airlines, (ABX, ATI and OAI) and an aircraft leasing company, (CAM ). CAM provides competitive aircraft lease rates by converting passenger aircraft into cargo freighters and offering them to customers under long-term leases. AMES provides aircraft maintenance and modification services.
We have threetwo reportable segments: CAM, which leases Boeing 777, 767, Boeing 757 and Boeing 737 aircraft and aircraft engines and ACMI Services, which primarily includes the aircargo and passenger transportation operations of the two airlines, and MRO Services, which provides aircraft maintenance and modification services to customers.three airlines. Our other business operations, which primarily provide support services to the transportation industry, include mailproviding aircraft maintenance and packagemodification services to customers, load transfer and sorting services as well as related equipment maintenance services. These operations do not constitute reportable segments due to their size. On November 9, 2018, the Company acquired OAI, a passenger airline, along with related entities (referred to collectively as "Omni"). Revenues and operating expenses include the activities of Omni for periods since their acquisition by the Company on November 9, 2018.
Our largest customers are DHL Network Operations (USA), Inc. and its affiliates ("DHL"), Amazon.com Services, Inc. ("ASI"), successor to Amazon Fulfillment Services, Inc., a subsidiary of Amazon.com, Inc. ("Amazon"), and the U.S. Military.Department of Defense ("DoD").
DHL
The Company has had long-term contracts with DHL since August 2003. DHL accounted for 15% and 28% of the Company's consolidated revenues forduring the first six months of 2019 and 2018, compared with 30% of the Company's consolidated revenues excluding directly reimbursed revenues in the corresponding period in 2017.respectively. As of June 30, 2018,2019, the Company, through CAM, leased 1614 Boeing 767 aircraft to DHL 11comprised of whichseven Boeing 767-200 aircraft and seven Boeing 767-300 aircraft expiring between 2022 and 2024. Eight of the 14 Boeing 767 aircraft were being operated for DHL by the Company's airlines for DHL under a crew, maintenance and insurance agreement and five aircraft which are operated by a DHL-affiliated airline in the Middle East. Additionally, ATI operatedairlines. We also operate four CAM-owned Boeing 757 aircraft under other operating arrangements with DHL. On April 30, 2019, the Company extended the leases for four of the 767-300 aircraft and one of the 767-200 aircraft leased to DHL through April 2022. The Company also extended the leases for six of the 767-200 aircraft through March 2022.
Amazon
The Company has been providing freighter aircraft operating flightand services and arrangingfor cargo handling and logistical support for ASI since September 2015. Revenues from our commercial arrangements with ASI comprised approximately 19% and 29% of our consolidated revenues during the first six months of 2019 and 2018, respectively. On March 8, 2016, the Companywe entered into an Air Transportation Services Agreement (the “ATSA”) with ASI pursuant to which CAM agreed to leaseleased 20 Boeing 767 freighter aircraft to ASI, including 12 Boeing 767-200 freighter aircraft for a term of five years and eight Boeing 767-300 freighter aircraft for a term of seven years. CAM owns allThe ATSA also provides for the operation of those aircraft by our airline subsidiaries and the performance of ground handling services by our subsidiary, LGSTX Services Inc. ("LGSTX"). In December 2018, the Company announced agreements with Amazon to 1) lease and operate ten additional Boeing 767-300 aircraft for ASI, 2) extend the term of the 12 Boeing 767767-200 aircraft that arecurrently leased and operated underto ASI by two years to 2023 with an option for three more years, 3) extend the ATSA. The ATSA became effective on April 1, 2016. Revenues from continuing operations performed for ASI comprised approximately 29%term of the Company's consolidated revenues from continuing operationseight Boeing 767-300 aircraft currently leased to ASI by three years to 2026 and 2027 with an option for three more years and 4) amend and extend the ATSA

by five years through March 2026, with an option to extend for an additional three years. During January, 2019, amendments to extend the terms of aircraft leases were executed. We leased the first of ten Boeing 767-300 aircraft to ASI during the second quarter of 2019. We plan to deliver five more of the 767-300 aircraft in 2019 and the remainder in 2020 for lease. All ten of these aircraft leases will be for ten years. Under the ATSA, we operate the aircraft based on pre-defined fees scaled for the first six monthsnumber of 2018, compared with 26% of revenues, excluding directly reimbursed revenues, during the corresponding period in 2017.aircraft hours flown, aircraft scheduled and flight crews provided to ASI for its network.
In conjunction with the execution of the ATSA, the Company and Amazon entered into an Investment Agreement and a Stockholders Agreement on March 8, 2016. The Investment Agreement calls for the Company to issue warrants in three tranches which grant Amazon the right to acquire up to 19.9% of the Company’s pre-transaction outstanding

common shares measured on a GAAP-diluted basis, adjusted for share issuances and repurchases by the Company following the date of the Investment Agreement and after giving effect to the warrants granted. The exercise priceIn conjunction with the December 22, 2018 agreement for the ten additional 767 aircraft leases, extensions of twenty existing Boeing 767 aircraft leases and additional aircraft operations under the ATSA, Amazon may vest additional warrants totaling 14.8 million common shares which could expand its potential ownership in the Company to approximately 33.2%, including the warrants described above for the 2016 agreements. On January 22, 2019, 5.5 million warrants vested in conjunction with the execution of 20 aircraft lease extensions and in June 2019 warrants vested in conjunction with the execution of a Boeing 767 aircraft lease. Additional warrants will vest as additional aircraft leases are executed and added to the ATSA operations. Additionally, Amazon can earn incremental warrant rights, increasing its potential ownership from 33.2% up to approximately 39.9% of the warrants is $9.73 per share, which representsCompany, by leasing up to seventeen more cargo aircraft from the closing price of the Company’s common shares on February 9, 2016. Each of the three tranches of warrants will be exercisable in accordance with its terms through March 8, 2021.Company before January 2026.
Our accounting for the warrants issued to Amazon has been determined in accordance with the financial reporting guidance for equity-based payments to non-employees and for financial instruments. The fair value of the warrants issued or issuable to Amazon are recorded as a lease incentive asset and are amortized against revenues over the duration of the aircraft leases. The warrants are accounted for as financial instruments, and accordingly, the fair value of the outstanding warrants are measured and classified in liabilities at the end of each reporting period. The Company's earnings are impacted by the fair value re-measurement of warrants at the end of each reporting period, lease incentive amortization and the related income tax effects. For income tax calculations, the value and timing of
related tax deductions will differ from the guidance described above for financial reporting. For additional information about the accounting for the warrants, see Note BC to the accompanying unaudited condensed consolidated financial statements.
DoD
The U.S. MilitaryCompany's airlines have been providing services to the DoD since the 1990's. The DoD comprised 11%37% and 10%11% of the Company's consolidated revenues excluding directly reimbursed revenues during the first six month periods ending June 30,months of 2019 and 2018, and 2017, respectively. The Company's airlines contract theirprovide passenger and cargo airlift services to the Air Mobility Command ("AMC"), throughU.S. DoD. Due to the U.S. Transportation Command ("USTC"), bothacquisition of which are organized underOAI in November of 2018, the U.S. Military.DoD comprises a larger portion of our 2019 consolidated revenues compared to previous periods.
Aircraft Fleet Summary 2018
AsOur fleet of cargo and passenger aircraft is summarized in the following table as of June 30, 2018, the combined operating fleet of owned freighter2019 and December 31, 2018. Our freighters, converted from passenger aircraft, consisted of 34 Boeing 767-200utilize standard shipping containers and can be deployed into regional cargo markets more economically than larger capacity aircraft, 29 Boeing 767-300 aircraft, four Boeing 757-200 aircraft, four Boeing 757 "combi" aircraft and two Boeing 737-400 aircraft. The Boeing 757 combi aircraft are capable of simultaneously carrying passengers and cargo containers on the main flight deck.newly built freighters or other competing alternatives. At June 30, 2018,2019, the Company owned fiveeleven Boeing 767-300 aircraft that were either already undergoing, or awaiting induction into the freighter conversion process.

Aircraft fleet activity during the first six months of 20182019 is summarized below:
- CAM completed the modification of fiveone Boeing 767-300 freighter aircraft purchased in the previous year and beganyear. After leasing the aircraft to lease four of those aircraft under multi-year leases to external customers.ATI for a short period, CAM began to lease the fifththis aircraft to ATI.
- CAM completed the modification of one 737-400 freighter aircraft purchased the previous year and entered into a multi-year lease with an external customer.
- ABX returned one Boeing 767-300 freighter aircraft to CAM. That aircraft was then leased to an external customer under a multi-year leaselease. ATI operates the aircraft for the customer.
- External customers returned three Boeing 767-200 freighter aircraft and is being operated byone Boeing 737-400 freighter aircraft to CAM. CAM leased two of the Boeing 767-200 aircraft to ABX.
- CAM sold one Boeing 767-300 freighter aircraft, which was under lease to an external customer, to that same external customer.
- CAM purchased fourseven Boeing 767-300 passenger aircraft for the purpose of converting six of the aircraft into a standard freighter configuration.
- External lessees returned two Boeing 767-200 freighter aircraft to CAM. Both of these aircraft are being prepped for redeployment to other lessees.


configuration and leasing one as a passenger aircraft.
June 30, 2018 December 31, 2017June 30, 2019 December 31, 2018
ACMI
Services
CAMTotal ACMI
Services
CAMTotal
ACMI
Services
CAMTotal ACMI
Services
CAMTotal
In-service aircraft      
Aircraft owned      
Boeing 767-2007
27
34
 7
29
36
Boeing 767-3004
25
29
 4
21
25
Boeing 757-2004

4
 4

4
Boeing 767-200 Freighter7
26
33
 5
29
34
Boeing 767-200 Passenger2

2
 2

2
Boeing 767-300 Freighter5
29
34
 5
28
33
Boeing 767-300 Passenger6

6
 6

6
Boeing 777-200 Passenger3

3
 3

3
Boeing 757-200 Freighter4

4
 4

4
Boeing 757-200 Combi4

4
 4

4
4

4
 4

4
Boeing 737-400
2
2
 
1
1
Boeing 737-400 Freighter
1
1
 
2
2
Total31
56
87
 29
59
88
Operating lease   
Boeing 767-200 Passenger1

1
 1

1
Boeing 767-300 Passenger1

1
 1

1
Total19
54
73
 19
51
70
2

2
 2

2
Other aircraft      
Owned Boeing 767-300 under modification
5
5
 
6
6

11
11
 
5
5
Owned Boeing 737-400 under modification


 
1
1
Owned Boeing 737 available or staging for lease 1
1
  
Owned Boeing 767 available or staging for lease
2
2
 



2
2
 
1
1
As of June 30, 2018,2019, ABX, ATI and ATIOAI were leasing 1931 in-service aircraft internally from CAM for use in ACMI Services. As of June 30, 2018, four2019, one of CAM's 2726 Boeing 767-200 freighter aircraft shown in the fleet table above and seven of the 2529 Boeing 767-300 freighter aircraft shown in the aircraft fleet table above were leased to DHL and operated by ABX. Additionally, 12 of CAM's 2726 Boeing 767-200 freighter aircraft and eightnine of CAM's 2529 Boeing 767-300 freighter aircraft were leased to ASI and operated by ABX or ATI. TheCAM leased the other 1113 Boeing 767-200 freighter aircraft and 13 Boeing 767-300 aircraft to external customers, including six Boeing 767-200 aircraft leased to external customers include five Boeing 767-200 aircraft leased to DHL andthat are being operated by a DHL-owned airline. One of the other 10 Boeing 767-300 aircraft leased to external customers was operated by ATI. The carrying values of the total in-service fleet as of June 30, 20182019 and December 31, 20172018 were $998.7$1,273.1 million and $955.2$1,334.9 million, respectively. The table above does not reflect one Boeing 767-200 passenger aircraft owned by CAM.CAM that is not in service condition or in the process of freighter modification.



RESULTS OF OPERATIONS
Summary
External customer revenues from continuing operations decreasedincreased by $49.6$131.0 million to $203.6$334.6 million and decreased by $84.5$276.1 million to $406.6$682.8 million for the three and six month periods ended June 30, 2018,2019, respectively, compared to the corresponding periods of 2017. Effective January 1, 2018,2018. Revenues in 2019 grew due to additional passenger transportation services provided to the DoD after the Company adopted Accounting Standards Update ("ASU") No. 2014-09, “Revenue from Contracts with Customers (Topic 606)” ("Topic 606”). As a resultcompleted the acquisition of adopting Topic 606 beginning January 1, 2018, the Company reported certain revenues net of related expenses that are directly reimbursed by customers. Corresponding 2017 revenues include such expense reimbursements. Excluding revenues directly reimbursedOAI in 2017, customer revenuesNovember 2018. Revenues also increased $11.5 million, or 6% and $31.0 million, or 8% during the three and six month periods ended June 30, 2018, respectively, compared with the corresponding periods of 2017. External customer revenues increased primarily due to additional aircraft leases andfrom CAM's leasing operations, expanded CMI services.

and logistics services for ASI and increased aircraft maintenance and modification services for various customers.
The consolidated net earningslosses from continuing operations were $26.6 million and $4.0 million for the three and six months periods ended June 30, 2019, respectively, compared to net earnings of $24.5 million and $40.1 million for the corresponding periods of 2018. The Company had pre-tax losses from continuing operations of $23.5 million and pre-tax earnings of $4.1 million for the three and six month periods ended June 30, 2018,2019, respectively, compared to net losses of $53.9 million and $44.1 million for the corresponding periods of 2017. The pre-tax earnings from continuing operations wereof $29.9 million and $50.8 million for the three and six month periods ended June 30, 2018, respectively, compared to pre-tax losses of $48.4 million and $32.3 million for the corresponding periods of 2017.2018. Earnings were affected by specific events and certain adjustments that do not directly reflect our underlying operations among the years presented. Net earnings from continuing operations for 2018 benefited from a lower effective tax rate due to The Tax Cuts and Jobs Acts ("Tax Act") which was enacted on December 22, 2017. On a pre-tax basis, earnings included gainsnet losses of $11.7$35.9 million and $10.8$31.4 million for the three and six monthsmonth periods ended June 30, 2018,2019, respectively for the re-measurement of financial instruments, including the warrant obligations granted to Amazon. This compares to pre-tax lossesgains for re-measurement of such financial instruments of $67.6$11.7 million and $65.8$10.8 million for the corresponding periods of 2017. Pre-tax2018. Additionally, pre-tax earnings were also reduced by $4.2from continuing operations included losses of $2.4 million and $8.5$4.7 million for the three and six month periods ended June 30, 2018,2019, respectively, for the non-service components of retiree benefit plans compared to gains of $2.0 million and $4.1 million for the corresponding periods of 2018. Pre-tax earnings for the three and six month periods ended June 30, 2019 included losses of $6.0 million and $9.8 million, respectively for the Company's share of development costs for a joint venture and losses from a non-consolidated affiliate, compared to $2.4 million and $5.0 million for the corresponding periods of 2018. Pre-tax earnings were also reduced by $4.0 million and $8.3 million for the three and six month periods ended June 30, 2019, respectively, for the amortization of lease incentives given to ASI in the form of warrants, compared to $3.3$4.2 million and $5.9$8.5 million for the corresponding periods of 2017. Additionally, pre-tax earnings from continuing operations included gains of $2.0 million and $4.1 million for the three and six month periods ended June 30, 2018, respectively, for the non-service components of retiree benefit plans, compared to losses of $0.2 million and $0.4 million for the corresponding periods of 2017.2018. Pre-tax earnings for the three and six month periods ending June 30, 2018first half of 2019 also included lossesexpense of $2.4$0.4 million and $5.0 million, respectively,for acquisition fees incurred for the Company's share2018 acquisition of development costs for a new joint venture.Omni. After removing the effects of these items, adjusted pre-tax earnings from continuing operations, a non-GAAP measure (a definition and reconciliation of adjusted pre-tax earnings from continuing operations follows) increased $0.1were $24.8 million and $9.7 million to $22.8 million and $49.3$58.6 million for the three and six month periods ended June 30, 2018, respectively,2019 compared to 2017.$22.8 million and $49.3 million for the corresponding periods of 2018.
Adjusted pre-tax earnings from continuing operations for 2019 improved for the first half of 2018 improved compared to 2017,2018, driven primarily by additional aircraft lease revenues and the improved financial results of our airline operations. TheWe experienced additional revenues and earnings due to the acquisition of Omni in November 2018. Adjusted pre-tax results included reduced earnings from MRO Servicescontinuing operations also improved due to a lower leveladditional aircraft leases and the expansion of recognized revenuesgateway ground operations for ASI. Growth in revenue was partially offset by the costs necessary to support expanded flight operations, higher costs for flight crews and a mix of lower margin services throughhigher depreciation expense. Pre-tax earnings for 2018 included contributions from the Company's former USPS contracts for parcel sorting which expired in September 2018. Pre-tax earnings for the first half of 2018 compared to 2017. Results for the three and six month periods ended June 30, 20182019 included an additional pre-tax interest expense due to the acquisition of $2.1 millionOmni and $4.1 million, respectively, for the amortizationexpansion of convertible debt discount and issuance costs.CAM's fleet.


A summary of our revenues and pre-tax earnings and adjusted pre-tax earnings from continuing operations is shown below (in thousands):
Three Months Ending Six Months EndingThree Months Ending Six Month Ending
June 30, June 30,June 30, June 30,
2018 2017 2018 20172019 2018 2019 2018
Revenues from Continuing Operations:              
CAM              
Aircraft leasing and related services$58,603
 $52,813
 115,205
 103,382
$73,280
 $58,603
 $147,857
 $115,205
Lease incentive amortization(4,226) (3,283) (8,452) (5,874)(4,024) (4,226) (8,251) (8,452)
Total CAM54,377
 49,530
 106,753
 97,508
69,256
 54,377
 139,606
 106,753
ACMI Services119,606
 111,851
 238,980
 219,917
254,938
 119,606
 512,894
 238,980
MRO Services45,794
 66,336
 98,517
 106,674
Other Activities19,730
 21,706
 39,013
 53,104
71,104
 65,361
 138,466
 137,259
Total Revenues239,507
 249,423
 483,263
 477,203
395,298
 239,344
 790,966
 482,992
Eliminate internal revenues(35,900) (57,326) (76,616) (101,542)(60,722) (35,737) (108,207) (76,345)
Customer Revenues - non reimbursed$203,607
 $192,097
 $406,647
 $375,661
Revenues for reimbursed expenses
 61,114
 
 115,467
Customer Revenues$203,607
 $253,211
 $406,647
 $491,128
$334,576
 $203,607
 $682,759
 $406,647
              
       
Pre-Tax Earnings (Loss) from Continuing Operations:       
Pre-Tax Earnings from Continuing Operations:       
CAM, inclusive of interest expense$15,394
 $12,795
 30,858
 26,125
$16,683
 $15,394
 $32,857
 $30,858
ACMI Services991
 258
 4,932
 (3,276)
MRO Services1,321
 11,103
 5,783
 14,291
ACMI Services, inclusive of interest expense973
 500
 13,283
 3,915
Other Activities2,749
 1,400
 5,330
 3,863
4,006
 3,039
 5,909
 6,757
Inter-segment earnings eliminated(1,031) (5,958) (4,356) (6,820)
Net unallocated interest expense(838) (216) (1,657) (387)(903) (347) (1,683) (640)
Net financial instrument re-measurement (loss) gain11,697
 (67,649) 10,812
 (65,780)
Other non-service components of retiree benefit costs, net2,045
 (177) 4,090
 (354)
Loss from non-consolidated affiliate(2,417) 
 (4,953) 
Pre-Tax Earnings (Loss) from Continuing Operations29,911
 (48,444) 50,839
 (32,338)
Add other non-service components of retiree benefit costs, net(2,045) 177
 (4,090) 354
Add charges for non-consolidated affiliate2,417
 
 4,953
 
Net financial instrument re-measurement gain (loss)(35,886) 11,697
 (31,386) 10,812
Transaction fees
 
 (373) 
Other non-service components of retiree benefits (credits) costs, net(2,351) 2,045
 (4,702) 4,090
Loss from non-consolidated affiliates(5,998) (2,417) (9,814) (4,953)
Pre-Tax Earnings from Continuing Operations(23,476) 29,911
 4,091
 50,839
Add other non-service components of retiree benefit costs (credits), net2,351
 (2,045) 4,702
 (4,090)
Add charges for non-consolidated affiliates5,998
 2,417
 9,814
 4,953
Add lease incentive amortization4,226
 3,283
 8,452
 5,874
4,024
 4,226
 8,251
 8,452
Add net loss (gain) on financial instruments(11,697) 67,649
 (10,812) 65,780
Add transaction fees
 
 373
 
Add net (gain) loss on financial instruments35,886
 (11,697) 31,386
 (10,812)
Adjusted Pre-Tax Earnings from Continuing Operations$22,812
 $22,665
 $49,342
 $39,670
$24,783
 $22,812
 $58,617
 $49,342
Adjusted pre-tax earnings from continuing operations, a non-GAAP measure, is pre-tax earnings excluding settlement charges and other non-service components of retiree benefit costs, gains and losses for the fair value re-measurement of financial instruments, lease incentive amortizationsamortization, the transaction fees related to the acquisition of Omni and the start-up costs of a non-consolidated joint venture. We exclude these items from adjusted pre-tax earnings because they are distinctly different in their predictability or not closely related to our on-going operating activities. Management uses adjusted pre-tax earnings to compare the performance of core operating results between periods. Presenting this measure provides investors with a comparative metric of fundamental operations while highlighting changes to certain items among periods. Adjusted pre-tax earnings should not be considered in isolation or as a substitute for analysis of the Company's results as reported under GAAP.
Effective January 1, 2018, we adopted Topic 606 using a modified retrospective approach, under which financial statements are prepared under the revised guidance for the year of adoption, but not for prior years. We determined

that under Topic 606, the Company is an agent for aircraft fuel and certain other costs reimbursed under its ACMI and CMI contracts and for certain ground services that it arranges for ASI. Under the new standard, such reimbursed amounts are reported net of the corresponding expenses beginning in 2018. Revenues for the three and six month periods ended June 30, 2017 included $61.1 million and $115.5 million for reimbursable revenues under its ACMI and CMI contracts and for directly reimbursed ground services, which, under the new standard, have been reported net of the related expenses in 2018.
CAM Segment
CAM offers aircraft leasing and related services to external customers and also leases aircraft internally to the Company's airlines. CAM acquires passenger aircraft and manages the modification of the aircraft into freighters. The follow-on aircraft leases normally cover a term of five to eightten years.
As of June 30, 2018 and 2017, CAM had 54 and 45 aircraft under lease to external customers, respectively. CAM's revenues grew by $4.8 million and $9.2 million for the three and six month periods ended June 30, 2018, respectively, compared to the corresponding periods of 2017, primarily as a result of additional aircraft leases. Revenues from external customers totaled $38.0 million and $73.9 million for the three and six month periods ended June 30, 2018, respectively, compared to $32.4 million and $63.2 million for the corresponding periods of 2017. CAM's revenues from the Company's airlines totaled $16.4$14.9 million and $32.9 million for the three and six month periods ended June 30, 2018,2019, respectively, compared to $17.2 million and $34.3 million for the corresponding periods of 2017, reflecting the transition2018, primarily as a result of CAM-ownedadditional aircraft to long-term leases withleases. Revenues from external customers. CAM's aircraft leasing and related services revenues, which exclude customer lease incentive amortization, increased $5.8customers totaled $40.0 million and $11.8$81.6 million duringfor the three and six month periods ended June 30, 2018,

2019, respectively, compared to $38.0 million and $73.9 million for the corresponding periods of 2017, primarily as a result2018. As of newJune 30, 2019 and 2018, CAM had 56 and 54 aircraft leases. Since July 1, 2017,under lease to external customers, respectively. CAM's revenues from the Company's airlines totaled $29.3 million and $58.0 million for the three and six month periods ended June 30, 2019, respectively, compared to $16.4 million and $32.9 million for the corresponding periods of 2018, reflecting lease revenues for the addition of the eleven passenger aircraft acquired with Omni in November 2018. In addition to the Omni acquisition, CAM has added tenfive Boeing 767-300 freighter aircraft and two Boeing 737-400 freighter aircraft to its lease portfolio.portfolio since July 1, 2018.
CAM's pre-tax earnings, inclusive of internally allocated interest expense, were $15.4$16.7 million and $30.9 million during the three and six month periods ended June 30, 2018, respectively, compared to $12.8 million and $26.1 million during the corresponding periods of 2017. Increased pre-tax earnings reflect additional external lease revenues. These increases were partially offset by increases in internally allocated interest expense of $0.9 million and $2.1$32.9 million for the three and six month periods ended June 30, 2018,2019, respectively, compared to $15.4 million and $30.9 million for the corresponding periods of 2018. Increased pre-tax earnings reflect the eleven passenger aircraft leased to Omni as well as lease revenues for additional aircraft, offset by increases of $4.9 million and $10.4 million in internally allocated interest expense due to higher debt levels for the three and six month periods ended June 30, 2019 compared to the corresponding periods of 2017 due to higher debt levels.2018. The pre-tax earnings were also partially offset by the increased amortizationdepreciation expense of the ASI lease incentive of $0.9$8.2 million and $2.6$18.1 million for the three and six month periods ended June 30, 2018,2019, respectively, compared to the corresponding periods of 2017. Depreciation expense increased by $4.3 million and $8.9 million for the three and six month periods ended June 30, 2018 respectively, compared to the corresponding periods of 2017 driven by the addition of ninefive Boeing freighter aircraft in the first half of 20182019 compared to 2017.2018, and the addition of the 11 Boeing passenger aircraft from the Omni acquisition.
During the first six months of 2018,2019, CAM purchased fourseven Boeing 767-300 passenger aircraft for freighter conversion. CAM also sold one Boeing 767-300 aircraft which had been under a long-term lease to an external customer.aircraft. As of June 30, 2018, all four2019, six of the Boeing 767-300 passenger aircraft purchased in 20182019 and onefour Boeing 767-300 passenger aircraft purchased during 20172018 were being modified from passenger to freighter configuration.
CAM expects to complete the freighter modification One of the fiveBoeing 767-300 aircraft purchased in 2019 was being prepped for passenger service. We expect to add up to nine aircraft which it owned at June 30, 2018into service during the second half of 2018. CAM has2019. We have customer commitments or letters of intent for threemost of these five aircraft. CAM's future operating results will depend on the timing and lease rates under whichAdditionally, CAM has agreements to purchase 19 more Boeing 767-300 aircraft. CAM began to acquire these aircraft are ultimately leased. in July 2019 and currently expects to complete their freighter modifications through 2021.
CAM's operating results will depend on its continuing ability to convert passenger aircraft into freighters within planned costs and within the time frames required by customers. CAM's future operating results will also depend on the timing and lease rates under which these aircraft are ultimately leased. CAM's future operating results will also be impacted by the amortization of additional warrants committed to Amazon in conjunction with the recent agreements for ten additional long-term aircraft leases and amendments to extend the terms of existing aircraft leases.
ACMI Services Segment
The ACMI Services segment provides airline operations to its customers, typically under contracts providing for a combination of aircraft, crews, maintenance, insurance and insurance ("ACMI").aviation fuel. Our customers are usuallytypically responsible for supplying the necessary aviation fuel and cargo handling services and reimbursing our airline for other operating expenses such as landing fees, ramp expenses, certain aircraft maintenance expenses and fuel procured directly by the airline. Aircraft charter agreements, including those for the U.S. Military,DoD, usually require the airline to provide full service, including fuel and other operating expenses for a fixed, all-inclusive price. As of June 30, 2018,2019, ACMI Services included 5163 in-service aircraft, including 1931 passenger and freighter aircraft leased internally from CAM, 11eight CAM-owned freighter aircraft which are

under lease to DHL and operated by ABX under the restateda CMI agreement, 2021 CAM-owned freighter aircraft which are under lease to ASI and operated by ATI and ABX under the ATSA, and another CAM-owned freighter operated under a CMI by ATI.ATI and two passenger aircraft leased from an external lessor.
Total revenues from ACMI Services decreased $24.9increased $135.3 million and $50.5$273.9 million during the three and six month periods ended June 30, 2018,2019, respectively, to $119.6$254.9 million and $239.0$512.9 million compared to the corresponding periods of 2017.2018. These increases reflect the acquisition of OAI and increases in billable block hours of 32% and 28% for the three and six month periods ended June 30, 2019, respectively, compared to 2018. Increased revenues for 2019 included additional aircraft operations for ASI and the DoD. As of June 30, 2019, ACMI Services revenues included the operation of twelve more CAM-owned aircraft compared to June 30, 2018. On a combined pro forma basis, ACMI Services revenues for the three and six month periods ended June 30, 2017 included $32.62018 would have been $243.9 million and $69.5$466.5 million, respectively, forwith the reimbursementinclusion of fuel and certain operating expenses. Such revenues for 2018 are reported net of expenses after the adoption of Topic 606. Airline services revenues from external customers, which do not include revenues for the reimbursement of fuel and certain operating expenses, increased $7.8 million and $19.1 million for the three and six month periods ended June 30, 2018, respectively, compared to the corresponding periods of 2017. Improved revenues were driven by additional aircraft operations for ASI and reflect a 5% and 8% increase in billable block hours for both the three and six month periods ended June 30, 2018, respectively, compared to the corresponding periods of 2017. As of June 30, 2018, ACMI Services included the operation of two more CAM-owned aircraft compared to June 30, 2017.OAI.
ACMI Services had pre-tax earnings of $1.0 million and $4.9$13.3 million during the three and six month periods ended June 30, 2018,2019, respectively, compared to pre-tax earnings of $0.3$0.5 million and losses of $3.3$3.9 million for the corresponding periods of 2017.2018. Improved pre-tax results in 20182019 compared to 2017 reflect2018 were bolstered by expanded revenues from the acquisition of OAI and the timing of scheduled airframe maintenance costs. The improved pre-tax earnings were offset by increases of

$6.0 million and $12.0 million in internally allocated interest expense due to higher revenues fromdebt levels for the three and six month periods ended June 30, 2019, respectively, compared to 2018. Earnings for the second quarter of 2019 also reflected additional personnel and training time in preparation for additional aircraft and block hours offset byscheduled for operations in the costsecond half of additional employees2019. Scheduled airframe maintenance expense decreased $3.0 million during the first half of 2019 compared to 2018. Airframe maintenance expense varies depending upon the number of C-checks and aircraft maintenance expenses to support the expanded operations.scope of the checks required for those airframes scheduled for maintenance. In March 2018, ATI began to implement recently ratified an amendment to the collective bargaining agreement with its crewmembers. The amendmentsamendment resulted in increased wages for the ATI crewmembers beginning in the second quarter of 2018.
Effective January 1, 2018, we adopted ASU "Compensation - Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost ("ASU 2017-07").The future growth for ACMI Service may be impacted by additional aircraft operations for Amazon. As a result of adopting ASU 2017-07,recent agreements with Amazon, we began to operate an additional Boeing 767-300 aircraft in June of 2019 under the pre-tax earningsATSA and we expect to add at least nine additional Boeing 767-300 for ACMI Services do not includeAmazon, including five in the other non-service componentssecond half of retiree benefit costs.2019 and four during 2020. (These aircraft will be leased to Amazon from CAM). Future operating results would also be impacted by the vesting of additional warrants committed to Amazon in exchange for adding aircraft into the ATSA.
ABX is negotiating with its flight crewmembers' collective bargaining unit. These negotiations could result in changes that may effect our productivity, employee compensation levels and the marketability of our services. Maintaining profitability in ACMI Services will depend on a number of factors, including customer flight schedules, crewmember productivity and pay, employee benefits, aircraft maintenance schedules and the number of aircraft we operate.
MRO Services Segment
MRO Services sells aircraft parts ABX is negotiating with its flight crewmembers' collective bargaining unit. These negotiations could result in changes that may effect our productivity, employee compensation levels and provides aircraft maintenance and modification services through AMES and Pemco World Air Services, Inc. ("Pemco"), subsidiaries. Total revenues from MRO Services decreased $20.5 million and $8.2 million for the three and six month periods ended June 30, 2018, respectively, compared to the corresponding periodsmarketability of 2017. External customer revenues for MRO Services decreased $2.1 million and increased $3.4 million during the three and six month periods ended June 30, 2018, respectively, compared to the corresponding periods of 2017. During the second quarter of 2017, MRO Services completed significant aircraft modification services for CAM in conjunction with aircraft leases and additional aircraft freighter conversions for external customers. The decline in revenues for the second quarter of 2018 also reflects the change in accounting standards beginning in 2018 after the adoption of Topic 606 to recognize certain aircraft maintenance and modification services over time instead of upon completion. During 2017, revenues were recognized in large amounts upon completion and redelivery of an aircraft to the customer.
The pre-tax earnings from MRO Services decreased $9.8 million and $8.5 million during the three and six month periods ended June 30, 2018 to $1.3 million and $5.8 million, respectively, compared to the corresponding periods of 2017. The decline in MRO Services profitability reflects the lower level of revenue recognized and a mix of more lower margin maintenance services revenues during 2018.

our services.
Other Activities
We provide other support services to our ACMI Services customers and other airlines by leveraging our knowledge and capabilities developed for our own operations over the years. Through the Airborne Maintenance and Engineering Services, Inc. and its subsidiaries ("AMES"), we sell aircraft parts and provide aircraft maintenance and modification services. We provideprovided mail and package sorting and logistical support to the U.S. Postal Service (“USPS”) at five USPS facilities through September 30, 2018, at which time our contracts expired. We arrange and arrangeperform similar services for certain ASI gateway locations in the U.S. During the second quarter, ASI has begun to in-source some of the gateway locations for which we arrange contracted logistical support. We also provide maintenance for ground equipment, facilities and material handling equipment. We also resell aviation fuel in Ohio and provide flight training.
External customer revenues from all other activities were $16.9decreased $6.2 million and $33.8$5.4 million during the three and six month periods ended June 30, 2018, respectively, compared to $45.2 million and $81.9 million for the corresponding periods of 2017. Customer revenues for the three and six month periods ended June 30, 2017 included $28.5 million and $45.9 million, respectively, for the reimbursement of certain ground services that it arranges for ASI which are being net against expenses in 2018 after the adoption of Topic 606. Revenues from external customers, which do not include 2017 revenues for the reimbursement of certain ground services, increased $0.2 million and decreased $2.2 million for the three and six month periods ended June 30, 2018,2019, respectively, compared to the corresponding periods of 2017. The decrease2018. Declines in USPS revenue was drivenduring 2019 were offset partially by the the termination of hub logisticsadditional facility maintenance services weand ground support services provided through May of 2017 for ASI at the airport in Wilmington, Ohio.to ASI.
The pre-tax earnings from other activities increased $1.3by $1.0 million and $1.5decreased by $0.8 million during the three and six month periods ended June 30, 20182019 to $2.7$4.0 million and $5.3$5.9 million, respectively, compared to the corresponding periods of 2017. Additional earnings from higher contractual costs2018. Improved results for second quarter of 2019 compared to 2018 reflect improved revenues and increased volumes atmargins on aircraft maintenance provided to other airlines. Results for the USPS and ASI locations as well as earnings from an airline affiliate accounted for underfirst six months of 2019 compared to the equity method were offset by reduced ground services and aviation fuel sales after ASI discontinued its hub in Wilmington, Ohio.
During Junesame period of 2018 we beganwere negatively impacted by lower aircraft maintenance revenues during the first quarter of 2019 and projects with longer than expected completion times compared to provide cargo handling and related ground support services directly to ASI at one of its gateway locations. The contracts for five USPS facilities we service have been extended from their original expiration dates and are currently scheduled to expire during September 2018. We understand the USPS is evaluating alternatives for these facilities. The contract for some or all of these may not be renewed.
Discontinued Operations
The financial results of discontinued operations primarily reflectconsist of cost adjustments to benefits forof former employees previously associated with ABX's former freight sorting and aircraft fueling serviceshub operations provided to DHL. Pre-tax earnings related to the former sortinghub operations were $0.5$0.1 million and $0.6$0.4 million for the first six months of 20182019 and 2017,2018, respectively.
Expenses from Continuing Operations
Salaries, wages and benefits expense increased $8.2$23.8 million and $6.5$52.4 million during the three and six month periods ended June 30, 2018,2019, respectively, compared to the corresponding periods of 2017. Expenses2018 driven by higher headcount for flight operations, maintenance services and package sorting services. The increases in expense for the three and six month periods ended June 30, 2018, increased due to2019 included $28.1 million and $54.6 million, respectively, for Omni, acquired in November 2018. Expenses for 2019 also included higher flight crew wages in conjunction with an amendment to the collective bargaining agreement with itsthe ATI crewmembers additional employees and additional aircraft maintenance technician timetechnicians to support

increased block hours. Increases in salaries, wages and benefits expense were partially offset by personnel reductions due to the expiration of the USPS contracts.
Depreciation and amortization expense increased $3.8$21.6 million and $7.4$44.3 million during the three and six month periods ended June 30, 2018,2019, respectively, compared to the corresponding periods of 2017.2018. The increase in depreciation expense for the three and six month periods ended June 30, 2019 included $15.5 million and $31.0 million, respectively, for Omni assets acquired in November 2018. The increase also reflects incremental depreciation for tenfive Boeing 767-300 aircraft and two Boeing 737-400additional aircraft engines added to the operating fleet since July 1, 2017.2018, as well as capitalized heavy maintenance and navigation technology upgrades. We expect depreciation expense to increase during future periods in conjunction with our fleet expansion and capital spending plans.
Maintenance, materials and repairs expense decreasedincreased by $0.8$2.8 million and increased $5.8$10.7 million during the three and six month periods ended June 30, 2018,2019, respectively, compared to the corresponding periods of 2017. The decrease in the second quarter of 2018 compared to 2017 was due to lower cost of material for the Company's MRO Services segment, offset by increased costs for airframe checks that are expensed by the Company's airlines. During the second quarter of 2017, MRO Services had an increased level of customer revenues and direct expenses compared to 2018. The increase in maintenance, materials and repairs expense for the firstthree and six monthsmonth periods ended June 30, 2019 included $4.4 million and $8.2 million, respectively, for Omni, acquired in November 2018. The timing and work scope of 2018scheduled airframe checks resulted in fluctuations of maintenance expense during 2019 compared to 2017 was due to additional airframe checks that are expensed by the Company's airlines and an increase in the cost of materials to support additional airline block hours and MRO Services.2018. Aircraft maintenance and material expenses can vary among periods due to the number of scheduled airframe maintenance checksevents and the scope of theairframe checks that are performed.

Fuel expense decreasedincreased by $26.3$28.1 million and $55.4$57.0 million during the three and six month periods ended June 30, 2018,2019, respectively, compared to the corresponding periods of 2017. In 2017, fuel expense included reimbursable fuel billed to DHL, ASI and other ACMI customers which is being netted against the revenue in 2018 after the adoption of Topic 606. The customer-reimbursed fuel for the three and six month periods ended June 30, 2017 was $28.4 million and $59.9 million, respectively.2018. Fuel expense includes the cost of fuel to operate U.S. MilitaryDoD charters as well as fuel used to position aircraft for service and for maintenance purposes. Fuel expense, excluding customer reimbursed fuel increased $2.1 million and $4.5 millionThe increase for the three and six month periods ended June 30, 2018 compared to 20172019 included $26.2 million and $54.3 million, respectively, for Omni. The remainder of the increase was due to more block hours flown for military customers in the first half of 2018.2019.
Contracted ground and aviation services expense includes navigational services, aircraft and cargo handling services, baggage handling services and other airport services. Contracted ground and aviation services decreased $29.7increased $12.1 million and $48.0$25.3 million during the three and six month periods ended June 30, 2018,2019, respectively, compared to the corresponding periods of 2017. The decrease is primarily due to the netting of reimbursable revenues from certain ground services arranged2018. This increase for ASI against the expense in 2018 due to the adoption of Topic 606. The customer-reimbursed expenses in the three and six month periods ended June 30, 2017 were $30.02019 included $12.3 million and $48.6$24.2 million, respectively.respectively, for Omni.
Travel expense increased by $13.6 million and $27.1 million during the three and six month periods ended June 30, 2019, respectively, compared to the corresponding periods of 2018. The increase for the three and six month periods ended June 30, 2019 included $13.1 million and $26.0 million, respectively, for Omni.
Landing and ramp expense, which includes the cost of deicing chemicals, decreasedincreased by $3.0$1.1 million and $7.2$3.0 million during the three and six month periods ended June 30, 2018,2019, respectively, compared to the corresponding periods of 2017.2018. The decrease is primarily due toincrease for the netting of reimbursable revenues from landingthree and ramp fees billed to DHL, ASI and other ACMI customers against the expense in 2018 due to the adoption of Topic 606.
Other operating expenses decreased by $3.5six month periods ended June 30, 2019 included $1.3 million and $4.3$3.2 million, respectively, for Omni.
Rent expense increased by $0.2 million and $0.7 million during the three and six month periods ended June 30, 2018,2019, respectively, compared to the corresponding periods of 2017.2018. This increase for the three and six month periods ended June 30, 2019 included $1.5 million and $3.0 million, respectively, for Omni. This increase was partially offset by decreases in building rent after the expiration of the contracts for the five USPS facilities.
Insurance expense increased by $0.4 million and $1.0 million during the three and six month periods ended June 30, 2019, respectively, compared to the corresponding periods of 2018. Aircraft fleet insurance has increased due to additional aircraft operations during the first half of 2019 compared to 2018.
Other operating expenses increased by $13.6 million and $21.8 million during the three and six month periods ended June 30, 2019, respectively, compared to the corresponding periods of 2018. Other operating expenses include professional fees, employee training and utilities. The decline in otherincrease for the three and six month periods ended June 30, 2019 included $8.9 million and $16.2 million, respectively, for Omni. Other operating expenses for 2018 includes gains related toduring 2019 were negatively impacted by the sale of equipment, improved operating results of an airline affiliate accounted for under the equity method. Operating expenses for 2018 included gains related to the sale of equipment.
The following table provides pro forma operating expenses (in thousands) for the Company after giving effect to the Omni acquisition. This information is based on adjustments to the historical consolidated financial statements of Omni using the purchase method of accounting for business combinations. The pro forma adjustments do not include any of the cost savings and lowerother synergies anticipated to result from the acquisition. These pro forma expenses have been prepared for comparative purposes only and do not purport to be indicative of results that would have actually

been reported as of the date or for the quarter presented had the acquisition taken place on such date or at the beginning of the quarter indicated, or to project the Company’s financial position or results of operations which may be reported in the future.
The pro forma results exclude non-recurring charges recorded by Omni that were directly related to the acquisition by the Company. Combined results for Air Transport Services Group and Omni for the three and six month periods ended June 30, 2018 were adjusted for the following in order to create the unaudited pro forma results in the table:
  Three Months Ended June 30, 2018
  Actual ATSG Actual Omni Pro Forma Adjustments Pro Forma Results
Operating Expenses        
Salaries, wages and benefits $74,049
 $27,815
 $(351) $101,513
Depreciation and amortization 41,620
 15,014
 2,644
 59,278
Maintenance, materials and repairs 36,817
 3,723
 (314) 40,226
Fuel 5,913
 26,386
 (21) 32,278
Contracted ground and aviation services 2,444
 13,381
 
 15,825
Travel 7,288
 11,100
 
 18,388
Landing and ramp 1,311
 1,806
 
 3,117
Rent 3,760
 1,692
 
 5,452
Insurance 1,420
 487
 
 1,907
Other operating expenses 5,087
 5,984
 
 11,071
Total Operating Expenses $179,709
 $107,388
 $1,958
 $289,055
         
  Six Months Ended June 30, 2018
  Actual ATSG Actual Omni Pro Forma Adjustments Pro Forma Results
Operating Expenses        
Salaries, wages and benefits $144,832
 $45,395
 $(265) $189,962
Depreciation and amortization 81,624
 30,019
 5,288
 116,931
Maintenance, materials and repairs 73,683
 7,251
 (320) 80,614
Fuel 11,701
 47,445
 (23) 59,123
Contracted ground and aviation services 4,828
 24,335
 
 29,163
Travel 13,920
 19,897
 
 33,817
Landing and ramp 2,459
 3,477
 
 5,936
Rent 6,990
 3,601
 
 10,591
Insurance 2,777
 975
 
 3,752
Other operating expenses 12,292
 12,169
 
 24,461
Total Operating Expenses $355,106
 $194,564
 $4,680
 $554,350
The following adjustments were made to the historical financial records to create the unaudited pro forma information in the table above:
Adjustments to eliminate transactions between the Company and Omni during the three and six month periods ended June 30, 2018.
Adjustment to reflect estimated additional depreciation and amortization expense of $2.6 million and $5.3 million for the three and six month periods ended June 30, 2018, resulting from the fair value adjustments to Omni’s intangible and tangible assets. Pro forma combined depreciation expense for uncollectible customer accounts comparedthe periods presented reflect the

increased fair values of the aircraft acquired and longer useful lives of the aircraft, indicative of the Company's polices and intent to the same periods of 2017.modify certain aircraft to freighters as an aircraft is removed from passenger service.
Interest expense increased by $1.6$11.4 million and $3.4$23.5 million during the three and six month periods ended June 30, 2018,2019, respectively, compared to the corresponding periods of 2017.2018. Interest expense increased due to a higher average debt level, including an additional term loan under the Senior Credit Agreement of $675.0 million to finance the acquisition of Omni and higher interest rates on the Company's outstanding loans. Capitalized interest due to our fleet expansion was flat during the three and six month periods ended June 30, 2018, respectively, compared to the corresponding periods of 2017. Interest expense in the first half of2019 and 2018 was also impacted by the convertible notes issued in September 2017. The convertible notes have a principal value of $258.8 million and bear interest at a cash coupon rate of 1.125%. At the time of issuance, the value of the conversion feature of the convertible notes was recorded as a debt discount and is being amortized along with debt issuance costs to interest expense over the seven year term of the convertible notes. We expect interest expense to increase for 2019 reflecting our additional level of borrowings and higher interest rates.
The non-cash amortizationCompany recorded pre-tax net losses on financial instruments of the debt discount and issuance costs was $2.1$35.9 million and $4.1$31.4 million during the three and six month periods ended June 30, 2018,2019, respectively, compared to the corresponding periods of 2017.
The Company recorded pre-tax net gains on financial instruments of $11.7 million and $10.8 million during 2018. The gains and losses are primarily a result of re-measuring, as of June 30, 2019 and 2018, the fair value of the stock warrants granted to Amazon.
Non service components of retiree benefits were net losses of $2.4 million and $4.7 million during the three and six month periods ended June 30, 2018,2019, respectively, compared to net gains of $2.0 million and $4.1 million for 2018. The non service component gain and losses of $67.6 millionretiree benefits are actuarially determined and $65.8 million duringinclude the corresponding periodsamortization of 2017.The gains are primarily a resultunrecognized gain and loss stemming from changes in assumptions regarding discount rates, expected investment returns and other retirement plan assumptions. Non service components of re-measuring, as of June 30, 2018,retiree benefits can vary significantly from one year to the fair value of the stock warrants grantednext based on investment results and changes in discount rates used to Amazon. A decrease in the fair value of the warrant obligation since the previous re-measurement dates of March 31, 2018 and December 31, 2017, corresponded to a decrease in the traded price of the Company's shares and resulted in non-cash losses. The non-cash gains and losses resulting from quarterly re-measurements of the warrants may vary widely among quarters.account for defined benefit retirement plans.
The provision for income taxes for interim periods is based on management's best estimate of the effective income tax rate expected to be applicable for the current year, plus any adjustments arising from changes in the estimated amount of taxable income related to prior periods. Income taxes recorded through June 30, 2018,2019 have been estimated utilizing a 24.3%25% rate based upon year-to-date income and projected results for the full year. The recognition of discrete tax items, such as the conversion of employee stock awards, the issuance of stock warrants and other items have an impact on the effective tax rate during a period.
The effective tax rate from continuing operations for the three and six month periods ended June 30, 2018,2019 was 18.2%13% and and 21.0%198%, respectively. TheseThe effective tax rates include deferredrate is affected by the re-measurement of warrants, changes in valuation allowances and other discrete tax expense related toitems in which expenses and benefits for tax purposes are different than required by generally accepted accounting principals. The effective tax rate before including the effects of the warrant re-measurement loss atre-measurements, incentive amortizations and valuation allowance changes was 25% and 24% for the end of the period.three and six month periods ended June 30, 2019, respectively. The effective tax rate before including the effects of the warrants was 26.0%26% and 24.0%24% for the three and six month periods ended June 30, 2018, respectively. The effective tax rate before including

the effects of the warrants for the three and six month periods ended June 30, 2017 were 37.4% and 36.0%, respectively. The effective tax rate decreased for the first half of 2018 due to the enactment of the Tax Act in December 2017.
As of December 31, 2017,2018, the Company had operating loss carryforwards for U.S. federal income tax purposes of approximately $57.6$253.8 million which will begin to expire in 2031 if not utilized before then. We expect to utilize the loss carryforwards to offset federal income tax liabilities in the future. As a result, we do not expect to pay federal income taxes until 20232024 or later. The Company may, however, be required to pay minimum taxtaxes and certain state and local income taxes before then. The Company's taxable income earned from international flights areis primarily sourced to the United States under international aviation agreements and treaties. When we operate in countries without such agreements, the Company could incur additional foreign income taxes.


FINANCIAL CONDITION, LIQUIDITY AND CAPITAL RESOURCES
Cash Flows
Net cash generated from operating activities totaled $142.0209.4 million and $124.8$142.0 million for the first six months ofin 2019 and 2018, and 2017, respectively. Improved cash flows generated from operating activities during the first six months of 20182019, were driven primarily by additional aircraft leases to customers and by increased operating levels of the ACMI Services segment and customer collections.segment. Cash outlays for pension contributions were $1.4 million and $1.8 million for the first six months of 2019 and 2018, were $1.8 million compared to $1.5 million for the corresponding period of 2017.respectively.

Capital spending levels were primarily the result of aircraft modification costs and the acquisition of aircraft for freighter modification. Cash payments for capital expenditures were $150.8$216.8 million and $144.3$150.8 million for the first six months of 20182019 and 2017,2018, respectively. Capital expenditures in 2019 included $159.0 million for the acquisition of seven Boeing 767-300 aircraft and freighter modification costs; $34.7 million for required heavy maintenance; and $23.1 million for other equipment, including purchases of aircraft engines and rotables. Our capital expenditures in the first six of 2018 included $116.6 million for the acquisition of four Boeing 767-300 aircraft and freighter modification costs; $19.3 million for required heavy maintenance; and $14.9 million for other equipment, including purchases of aircraft engines and rotables. Our capital expenditures during 2017 included $96.7 million for the acquisition of three Boeing 767-300 aircraft and two Boeing 737-400 aircraft and freighter modification costs; $31.3 million for required heavy maintenance; and $16.3 million for other equipment, including purchases of aircraft engines and rotables.
During the first six months of 2019, we paid $12.0 million to complete the acquisitions of Omni and TriFactor. During the first six months of 2019 and 2018, we contributed an additional$6.4 million and $5.2 million, respectively, to a joint venture with Precision Aircraft Solutions, LLC, which is developing a passenger-to-freighter conversion program for Airbus A321-200 aircraft. During the first quarter of 2017 we paid $0.6 million to complete our acquisition of Pemco World Air Services, Inc.
Net cash provided by financing activities was $4.5$21.1 million for the first six months of 20182019 compared to $56.9$4.5 million used by financing activities in 2017.2018. During the first six months of 2018,2019, we drew $30.0$40.0 million from the revolving credit facility under the Senior Credit Agreement to fund capital spending for aircraft acquisition and modifications. We made debt principal payments of $29.1$15.9 million.
During the first quarter of 2018, we repurchased 157,000 shares of the Company's common stock pursuant to an authorized share repurchase plan for $3.6 million, of which $0.6 million was paid in the first quarter and $3.0 million was paid in April 2018. The repurchase plan was amended by the Board again in February 2018 to increase the authorized share repurchase plansuch authorization to up to $150 million (less amounts previously repurchased).million. We have not repurchased any shares in 2019.
Commitments
We estimate that capital expenditures for 20182019 will total $300$475 million, of which the majority will be related to aircraft purchases and freighter modifications. Actual capital spending for any future period will be impacted by aircraft acquisitions, maintenance and modification processes. We expect to finance the capital expenditures from current cash balances, future operating cash flow and the Senior Credit Agreement. The Company outsources a significant portion of the aircraft freighter modification process to a non-affiliated third party. The modification primarily consists of the installation of a standard cargo door and loading system. For additional information about the Company's aircraft modification obligations, see Note H of the accompanying financial statements.
Since August 3, 2017, the Company has been part of a joint-venture with Precision Aircraft Solutions, LLC, to develop a passenger-to-freighter conversion program for Airbus A321-200 aircraft. We anticipate approval of a supplemental type certificate from the FAA in 2019.2020. We expect to make contributions equal to the Company's 49% ownership percentage of the program's total costs during 2018 and 2019.

Liquidity
The Company has a Senior Credit Agreement with a consortium of banks that includes antwo unsubordinated term loanloans of $63.1$705.9 million, net of debt issuance costs, and a revolving credit facility from which the Company has drawn $257.0$515.0 million, net of repayments, as of June 30, 2018.2019. The revolving credit facility has a capacity of $545.0$645.0 million, permitted additional indebtedness of $300.0$500.0 million of which $258.8 million has been utilized for the issuance of convertible notes, and an accordion feature whereby the Company can draw up to an additional $100.0$300.0 million subject to the lenders' consent. The Senior Credit Agreement is collateralized by the Company's fleet of Boeing 777, 767 and 757 freighter aircraft. Under the terms of the Senior Credit Agreement, the Company is required to maintain collateral coverage equal to 125%102% of the outstanding balances of the term loan and the maximum capacity of revolving credit facility or 150% of the outstanding balance of the term loanloans and the total funded revolving credit facility, whichever is less.facility. The minimum collateral coverage which must be maintained is 50% of the outstanding balance of the term loan plus the revolving credit facility commitment, which was $545.0$645.0 million. Each year, through May 6, 2019, the Company may request a one year extension of the final maturity date, subject to the lenders' consent. Absent such future extensions, the maturity date is currently set to expireSenior Credit Agreement expires on May 30, 2023.2024.
Under the Senior Credit Agreement, the Company is subject to covenants and warranties that are usual and customary including, among other things, limitations on certain additional indebtedness, guarantees of indebtedness, as well as a total debt to EBITDAdebt-to-EBITDA (earnings before interest, taxes, depreciation and amortization expenses) ratio and a fixed charge coverage ratio. The Senior Credit Agreement stipulates events of default including unspecified events that may have a material adverse effect on the Company. If an event of default occurs, the Company may be forced to repay, renegotiate or replace the Senior Credit Agreement.

Additional debt or lower EBITDA may result in higher interest rates. Under the Senior Credit Agreement, interest rates are adjusted quarterly based on the prevailing LIBOR or prime rates and a ratio of the Company's outstanding debt level to EBITDA (earnings before interest, taxes, depreciation and amortization expenses).EBITDA. At the Company's current debt-to-EBITDA ratio, the unsubordinated term loanloans and the revolving credit facility botheach bear a variable interest raterates of 3.6%4.66%.
At June 30, 2018,2019, the Company had $31.7$54.8 million of cash balances. The Company had $278.8$117.3 million available under the revolving credit facility, net of outstanding letters of credit, which totaled $9.2$12.7 million. Also, the Company has up to $300 million of additional borrowing capacity available under the accordion feature of its Senior Credit Agreement, subject to lender consent. We believe that the Company's current cash balances and forecasted cash flows provided from its operating agreements, combined with its Senior Credit Agreement, will be sufficient to fund operations, capital spending, scheduled debt payments and required pension funding for at least the next 12 months.
Off-Balance Sheet Arrangements
As part of our ongoing business, we do not participate in transactions that generate relationships with unconsolidated entities or financial partnerships, such as entities often referred to as structured finance or special purpose entities (“SPEs”), which would have been established for the purpose of facilitating off-balance sheet arrangements or other contractually narrow or limited purposes. As of June 30, 20182019 and 2017,2018, we were not involved in any material unconsolidated SPE transactions.
Certain of our operating leases and agreements contain indemnification obligations to the lessor or one or more other parties that are considered usual and customary (e.g. use, tax and environmental indemnifications), the terms of which range in duration and are often limited. Such indemnification obligations may continue after the expiration of the respective lease or agreement. No amounts have been recognized in our financial statements for the underlying fair value of guarantees and indemnifications.


CRITICAL ACCOUNTING POLICIES AND ESTIMATES
“Management’s Discussion and Analysis of Financial Condition and Results of Operations,” as well as certain disclosures included elsewhere in this report, are based upon our consolidated financial statements, which have been prepared in accordance with accounting principles generally accepted in the United States of America. The preparation of these financial statements requires us to select appropriate accounting policies and make estimates and judgments that affect the reported amounts of assets, liabilities, revenues and expenses, and related disclosures of contingencies. In certain cases, there are alternative policies or estimation techniques which could be selected. On an ongoing basis, we evaluate our selection of policies and the estimation techniques we use, including those related to revenue recognition, post-retirement liabilities, bad debts, self-insurance reserves, valuation of spare parts inventory, useful lives, salvage

values and impairment of property and equipment, income taxes, contingencies and litigation. The Company bases itsWe base our estimates on historical experience, current conditions and on various other assumptions that are believed to be reasonable under the circumstances. Those factors form the basis for making judgments about the carrying values of assets and liabilities that are not readily apparent from other sources, as well as for identifying and assessing our accounting treatment with respect to commitments and contingencies. Actual results may differ from these estimates under different assumptions or conditions.
For information regarding recently issued accounting pronouncements and the expected impact on our annual statements, see Note A "SUMMARY OF FINANCIAL STATEMENT PREPARATION AND SIGNIFICANT ACCOUNTING POLICIES" in the accompanying notes to the Condensed Consolidated Financial Statements included in Part I, Item 1 of this Form 10-Q.



ITEM 3. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK
The Company is exposed to market risk for changes in interest rates and changes in the price of jet fuel. The risk associated with jet fuel, however, is largely mitigated by reimbursement through the agreements with our customers.
No changes have occurred to the market risks the Company faces since information about those risks were disclosed in item 7A of the Company's 20172018 Annual Report on Formform 10-K filed with the Securities and Exchange Commission on March 1, 2018.2019.


ITEM 4. CONTROLS AND PROCEDURES
(a) Evaluation of Disclosure Controls and Procedures
As of June 30, 20182019, the Company carried out an evaluation, under the supervision and with the participation of the Company's Chief Executive Officer and Chief Financial Officer of the effectiveness of the design and operation of the Company's disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) under the Securities Exchange Act of 1934, as amended (the "Exchange Act")). Based upon the evaluation, the Company's Chief Executive Officer and Chief Financial Officer concluded that the Company's disclosure controls and procedures were effective to ensure that information required to be disclosed by the Company in the reports filed or submitted by it under the Exchange Act is recorded, processed, summarized and reported within time periods specified in the Securities and Exchange Commission rules and forms and is accumulated and communicated to management, including the Chief Executive Officer and Chief Financial Officer, or persons performing similar functions, as appropriate to allow timely decisions regarding required disclosure.
(b) Changes in Internal Controls
ThereExcept for the internal controls of Omni, which was acquired on November 9, 2018, there were no changes in internal control over financial reporting during the most recently completed fiscal quarteryear that has materially affected, or is reasonably likely to materially affect, the Company's internal control over financial reporting.



PART II. OTHER INFORMATION


ITEM 1. LEGAL PROCEEDINGS
We are currently a party to legal proceedings in various federal and state jurisdictions arising out of the operation of the Company's business. The amount of alleged liability, if any, from these proceedings cannot be determined with certainty; however, we believe that the Company's ultimate liability, if any, arising from the pending legal proceedings, as well as from asserted legal claims and known potential legal claims which are probable of assertion, taking into account established accruals for estimated liabilities, should not be material to our financial condition or results of operations.



ITEM 1A. RISK FACTORS
The Company faces risks that could adversely affect its condition or results of operations. Many of these risks are disclosed in Item 1A of the Company's 20172018 Annual Report on form 10-K, filed with the Securities and Exchange Commission on March 1, 2018. The risk factors presented below update, and should be considered in addition to, the risk factors previously disclosed in Item 1A of the Company's 2017 Annual Report on Form 10-K.2019. Other risks that are currently unknown to management or are currently considered immaterial or unlikely, could also adversely affect the Company.


ITEM 2. UNREGISTERED SALES OF EQUITY SECURITIES AND USE OF PROCEEDS
On August 5, 2014, the Board of Directors authorized the Company to repurchase up to $50.0 million of outstanding common stock. In May 2016, the Board amended the Company's common stock repurchase program increasing the amount that management may repurchase from $50.0 million to $100.0 million of outstanding common stock. In February 2018, the Board again amendedincreased the common stock repurchase programauthorization from $100.0 million to increase the amount that management may repurchase to $150$150.0 million (less amounts previously repurchased). The Board's authorization does not require the Company to repurchase a specific number of shares or establish a time frame for any repurchase and the Board may terminate the repurchase program at any time. Repurchases may be made from time to time in the open market or in privately negotiated transactions. There is no expiration date for the repurchase program. There were no repurchases made during the second quarter of 2018.2019. As of June 30, 2018,2019, the Company hashad repurchased 6,592,349 shares and has athe maximum dollar value of shares that may yetcould then be purchased under the program ofwas $61.3 million.


ITEM 5. OTHER INFORMATION
None.



ITEM 6. EXHIBITS
The following exhibits are filed with or incorporated by reference into this report.
Exhibit No.Description of Exhibit
 Articles of Incorporation
3.1
3.2
Material Contracts
10.1
10.2
Certifications
  
31.1
  
31.2
  
32.1
  
32.2
101.INSXBRL Instance Document
  
101.SCHXBRL Taxonomy Extension Schema Document
  
101.CALXBRL Taxonomy Extension Calculation Linkbase Document
  
101.DEFXBRL Taxonomy Extension Definition Linkbase Document
  
101.LABXBRL Taxonomy Extension Labels Linkbase Document
  
101.PREXBRL Taxonomy Extension Presentation Linkbase Document
____________________
(1)Incorporated by reference to the Company's Form 8-K filed with the Securities and Exchange Commission on May 10, 2019
(2)Incorporated by reference to the Company's Form 8-K filed with the Securities and Exchange Commission on May 29, 2019



SIGNATURES
Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.
    AIR TRANSPORT SERVICES GROUP, INC.,
    a Delaware Corporation
    Registrant
     
    /S/  JOSEPH C. HETE
    Joseph C. Hete
    Chief Executive Officer (Principal Executive Officer)
Date:August 8, 20186, 2019   
     
    /S/  QUINT O. TURNER
    Quint O. Turner
    Chief Financial Officer (Principal Financial Officer
Date:August 8, 20186, 2019  and Principal Accounting Officer)




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