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 September 30, 2017March 31, 2018
or
¨TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the transition period from            to            

Commission File number 001-32959

AIRCASTLE LIMITED
(Exact name of registrant as specified in its charter)

Bermuda98-0444035
(State or other jurisdiction of
incorporation or organization)
(IRS Employer
Identification No.)
  
c/o Aircastle Advisor LLC
201 Tresser Boulevard, Suite 400, Stamford, CT
06901
(Address of principal executive offices)(Zip Code)
Registrant’s telephone number, including area code     (203) 504-1020

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  þ    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 Regulation 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  þ    NO  ¨
Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, smaller reporting company or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company” and “emerging growth company” in Rule 12b-2 of the Exchange Act.
Large accelerated filerþAccelerated filer¨
Non-accelerated filer
o  (Do not check if a smaller reporting company)
Smaller reporting company¨
  Emerging growth company¨
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 13(a) of the Exchange Act. ¨  
Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). YES  ¨    NO  þ
As of October 31, 2017April 27, 2018, there were 78,707,96878,388,985 outstanding shares of the registrant’s common shares, par value $0.01 per share.

Aircastle Limited and Subsidiaries
Form 10-Q
Table of Contents
 
  
Page
No.
  
Item 1. 
 Consolidated Balance Sheets as of September 30, 2017March 31, 2018 and December 31, 20162017
 Consolidated Statements of Income for the three and nine months ended September 30,March 31, 2018 and 2017 and 2016
 Consolidated Statements of Comprehensive Income for the three and nine months ended September 30,March 31, 2018 and 2017 and 2016
 Consolidated Statements of Cash Flows for the ninethree months ended September 30,March 31, 2018 and 2017 and 2016
 
Item 2.Management’s Discussion and Analysis of Financial Condition and Results of Operations
Item 3.
Item 4.
  
Item 1.
Item 1A.
Item 2.
Item 3.
Item 4.
Item 5.
Item 6.

PART I. — FINANCIAL INFORMATION
ITEM 1.FINANCIAL STATEMENTS
Aircastle Limited and Subsidiaries
Consolidated Balance Sheets
(Dollars in thousands, except share data)

September 30,
2017
 December 31,
2016
March 31,
2018
 December 31,
2017
(Unaudited)  (Unaudited)  
ASSETS      
Cash and cash equivalents$662,649
 $455,579
$210,815
 $211,922
Restricted cash and cash equivalents20,536
 53,238
21,524
 21,935
Accounts receivable5,708
 6,035
7,818
 12,815
Flight equipment held for lease, net of accumulated depreciation of $1,168,064 and $1,224,899, respectively5,490,164
 6,247,585
Flight equipment held for lease, net of accumulated depreciation of $1,109,182 and $1,125,594, respectively6,143,695
 6,188,469
Net investment in finance and sales-type leases488,408
 260,853
533,373
 545,750
Unconsolidated equity method investments76,098
 72,977
78,220
 76,982
Other assets131,395
 148,398
173,654
 141,210
Total assets$6,874,958
 $7,244,665
$7,169,099
 $7,199,083
      
LIABILITIES AND SHAREHOLDERS’ EQUITY      
LIABILITIES      
Borrowings from secured financings, net of debt issuance costs$874,874
 $1,219,034
$824,189
 $849,874
Borrowings from unsecured financings, net of debt issuance costs3,286,240
 3,287,211
3,391,224
 3,463,732
Accounts payable, accrued expenses and other liabilities145,691
 127,527
139,961
 140,221
Lease rentals received in advance51,937
 62,225
66,350
 57,630
Security deposits120,320
 122,597
130,350
 130,628
Maintenance payments523,922
 591,757
679,571
 649,434
Total liabilities5,002,984
 5,410,351
5,231,645
 5,291,519
      
Commitments and Contingencies

 



 

      
SHAREHOLDERS’ EQUITY      
Preference shares, $0.01 par value, 50,000,000 shares authorized, no shares issued and outstanding
 

 
Common shares, $0.01 par value, 250,000,000 shares authorized, 78,707,968 shares issued and outstanding at September 30, 2017; and 78,593,133 shares issued and outstanding at December 31, 2016787
 786
Common shares, $0.01 par value, 250,000,000 shares authorized, 78,539,191 shares issued and outstanding at March 31, 2018; and 78,707,963 shares issued and outstanding at December 31, 2017785
 787
Additional paid-in capital1,525,766
 1,521,190
1,522,113
 1,527,796
Retained earnings347,248
 315,890
415,605
 380,331
Accumulated other comprehensive loss(1,827) (3,552)(1,049) (1,350)
Total shareholders’ equity1,871,974
 1,834,314
1,937,454
 1,907,564
Total liabilities and shareholders’ equity$6,874,958
 $7,244,665
$7,169,099
 $7,199,083

The accompanying notes are an integral part of these unaudited consolidated financial statements.

Aircastle Limited and Subsidiaries
Consolidated Statements of Income
(Dollars in thousands, except per share amounts)
(Unaudited)

Three Months Ended September 30, Nine Months Ended September 30,Three Months Ended March 31,
2017 2016 2017 20162018 2017
Revenues:          
Lease rental revenue$171,687
 $181,975
 $551,371
 $537,670
$177,483
 $190,586
Finance and sales-type lease revenue6,412
 5,354
 16,363
 13,026
9,442
 4,073
Amortization of lease premiums, discounts and incentives(2,388) (521) (8,780) (5,419)(3,128) (3,112)
Maintenance revenue14,507
 6,829
 55,738
 20,603
11,991
 12,287
Total lease revenue190,218
 193,637
 614,692
 565,880
195,788
 203,834
Gain on sale of flight equipment5,768
 759
Other revenue1,193
 1,015
 4,526
 2,425
1,124
 439
Total revenues191,411
 194,652
 619,218
 568,305
202,680
 205,032
          
Operating expenses:          
Depreciation70,018
 76,201
 227,446
 227,918
75,002
 79,174
Interest, net60,636
 61,797
 185,376
 188,490
57,108
 63,068
Selling, general and administrative (including non-cash share-based payment expense of $2,506 and $2,059 for the three months ended, and $10,636 and $5,796 for the nine months ended September 30, 2017 and 2016, respectively)17,137
 15,985
 55,491
 46,883
Selling, general and administrative (including non-cash share-based payment expense of $2,378 and $2,102 for the three months ended March 31, 2018 and 2017, respectively)17,835
 16,167
Impairment of flight equipment
 10,462
 80,430
 27,185

 500
Maintenance and other costs2,572
 1,834
 7,846
 5,504
988
 2,931
Total expenses150,363
 166,279
 556,589
 495,980
150,933
 161,840
          
Other income (expense):       
Gain (loss) on sale of flight equipment21,642
 (73) 35,926
 14,932
Other(360) (210) (3,069) (136)
Total other income (expense)21,282
 (283) 32,857
 14,796
3,174
 (1,149)
          
Income from continuing operations before income taxes and earnings of unconsolidated equity method investments62,330
 28,090
 95,486
 87,121
54,921
 42,043
Income tax provision6,195
 2,458
 8,536
 8,782
Income tax (benefit) provision(844) 1,846
Earnings of unconsolidated equity method investments, net of tax1,296
 1,805
 5,804
 5,390
1,782
 2,242
Net income$57,431
 $27,437
 $92,754
 $83,729
$57,547
 $42,439
          
Earnings per common share — Basic:          
Net income per share$0.73
 $0.35
 $1.18
 $1.06
$0.73
 $0.54
          
Earnings per common share — Diluted:          
Net income per share$0.73
 $0.35
 $1.18
 $1.06
$0.73
 $0.54
          
Dividends declared per share$0.26
 $0.24
 $0.78
 $0.72
$0.28
 $0.26

The accompanying notes are an integral part of these unaudited consolidated financial statements.

Aircastle Limited and Subsidiaries
Consolidated Statements of Comprehensive Income
(Dollars in thousands)
(Unaudited)

Three Months Ended September 30, Nine Months Ended September 30,Three Months Ended March 31,
2017 2016 2017 20162018 2017
          
Net income$57,431
 $27,437
 $92,754
 $83,729
$57,547
 $42,439
Other comprehensive income, net of tax:          
Net change in fair value of derivatives, net of tax expense of $0 for all periods presented
 
 
 (1)
Net derivative loss reclassified into earnings569
 705
 1,725
 9,074
301
 581
Other comprehensive income569
 705
 1,725
 9,073
301
 581
Total comprehensive income$58,000
 $28,142
 $94,479
 $92,802
$57,848
 $43,020


The accompanying notes are an integral part of these unaudited consolidated financial statements.

Aircastle Limited and Subsidiaries
Consolidated Statements of Cash Flows
(Dollars in thousands)
(Unaudited)
Nine Months Ended September 30,Three Months Ended March 31,
2017 20162018 2017
Cash flows from operating activities:      
Net income$92,754
 $83,729
$57,547
 $42,439
Adjustments to reconcile net income to net cash provided by operating activities:      
Depreciation227,446
 227,918
75,002
 79,174
Amortization of deferred financing costs15,860
 13,567
3,533
 4,155
Amortization of lease premiums, discounts and incentives8,780
 5,419
3,128
 3,112
Deferred income taxes(1,369) 3,129
1,306
 1,309
Non-cash share-based payment expense10,636
 5,796
2,378
 2,102
Cash flow hedges reclassified into earnings1,725
 9,074
301
 581
Security deposits and maintenance payments included in earnings(17,147) (12,844)(665) (10,524)
Gain on sale of flight equipment(35,926) (14,932)(5,768) (759)
Impairment of flight equipment80,430
 27,185

 500
Other2,078
 (4,712)(4,501) 112
Changes in certain assets and liabilities:      
Accounts receivable415
 1,699
4,320
 (1,407)
Other assets(6,980) 3,815
(2,666) (1,000)
Accounts payable, accrued expenses and other liabilities17,648
 16,459
(57) 14,334
Lease rentals received in advance(2,892) 2,111
8,554
 (2,552)
Net cash and restricted cash provided by operating activities393,458
 367,413
142,412
 131,576
Cash flows from investing activities:      
Acquisition and improvement of flight equipment(353,492) (792,270)(82,493) (142,053)
Proceeds from sale of flight equipment764,984
 488,749
43,917
 16,819
Net investment in finance and sales-type leases(246,871) (78,892)(16,256) (35,785)
Collections on finance and sales-type leases23,673
 14,413
6,493
 5,614
Aircraft purchase deposits and progress payments, net of returned deposits and aircraft sales deposits(14,068) (14,035)2,900
 (1,935)
Unconsolidated equity method investments and associated costs
 (12,686)
Other(405) (812)1,320
 88
Net cash and restricted cash provided by (used in) investing activities173,821
 (395,533)
Net cash and restricted cash used in investing activities(44,119) (157,252)
Cash flows from financing activities:      
Repurchase of shares(4,862) (36,573)(9,413) (2,513)
Proceeds from secured and unsecured debt financings500,000
 999,350

 500,000
Repayments of secured and unsecured debt financings(852,451) (489,134)(101,725) (31,178)
Deferred financing costs(8,540) (17,273)
 (8,038)
Restricted secured liquidity facility collateral
 65,000
Liquidity facility
 (65,000)
Security deposits and maintenance payments received138,813
 123,767
53,674
 41,049
Security deposits and maintenance payments returned(104,475) (37,036)(20,262) (39,383)
Dividends paid(61,396) (56,702)(22,085) (20,466)
Other
 (2,073)
Net cash and restricted cash (used in) provided by financing activities(392,911) 484,326
(99,811) 439,471
Net increase in cash and restricted cash174,368
 456,206
Net (decrease) increase in cash and restricted cash(1,518) 413,795
Cash and restricted cash at beginning of period508,817
 254,041
233,857
 508,817
Cash and restricted cash at end of period$683,185
 $710,247
$232,339
 $922,612






Aircastle Limited and Subsidiaries
Consolidated Statements of Cash Flows (Continued)
(Dollars in thousands)
(Unaudited)
Nine Months Ended September 30,Three Months Ended March 31,
2017 20162018 2017
Supplemental disclosures of cash flow information:      
Cash paid for interest, net of capitalized interest$156,428
 $141,653
$36,949
 $37,778
Cash paid for income taxes$3,622
 $12,904
$3,884
 $872
Supplemental disclosures of non-cash investing activities:      
Advance lease rentals, security deposits and maintenance payments assumed in asset acquisitions$133,389
 $110,472
$7,751
 $65
Advance lease rentals, security deposits, and maintenance payments settled in sale of flight equipment$22,542
 $26,671
Transfers from Flight equipment held for lease to Net investment in finance and sales-type leases, Other assets, and Maintenance reserves$154,213
 $140,150
Advance lease rentals, security deposits, and maintenance payments, other liabilities and other assets settled in sale of flight equipment$17,951
 $3,373
Transfers from Flight equipment held for lease to Net investment in finance and sales-type leases and Other assets$31,430
 $

The accompanying notes are an integral part of these unaudited consolidated financial statements.

Aircastle Limited and Subsidiaries
Notes to Unaudited Consolidated Financial Statements
(Dollars in thousands, except per share amounts)
September 30, 2017March 31, 2018


Note 1. Summary of Significant Accounting Policies
Organization and Basis of Presentation
Aircastle Limited (“Aircastle,” the “Company,” “we,” “us” or “our”) is a Bermuda exempted company that was incorporated on October 29, 2004 under the provisions of Section 14 of the Companies Act of 1981 of Bermuda. Aircastle’s business is acquiring, leasing, managing and selling commercial jet aircraft.
Aircastle is a holding company that conducts its business through subsidiaries. Aircastle directly or indirectly owns all of the outstanding common shares of its subsidiaries. The consolidated financial statements presented are prepared in accordance with U.S. generally accepted accounting principles (“U.S. GAAP”). The Company manages, analyzes and reports on its business and results of operations on the basis of one operating segment: leasing, financing, selling and managing commercial flight equipment. Our chief executive officer is the chief operating decision maker.
The accompanying consolidated financial statements are unaudited and have been prepared pursuant to the rules and regulations of the Securities and Exchange Commission (the “SEC”) for interim financial reporting and, in our opinion, reflect all adjustments, including normal recurring items, which are necessary to present fairly the results for interim periods. Operating results for the periods presented are not necessarily indicative of the results that may be expected for the entire year. Certain information and footnote disclosures normally included in consolidated financial statements prepared in accordance with U.S. GAAP have been omitted in accordance with the rules and regulations of the SEC; however, we believe that the disclosures are adequate to make information presented not misleading. These financial statements should be read in conjunction with the consolidated financial statements and notes thereto included in the Company’s Annual Report on Form 10-K for the year ended December 31, 20162017.
Effective January 1, 2017,As part of the Company adoptedCompany’s adoption of Financial Accounting Standards Board (“FASB”) Accounting Standards Update (“ASU”) No. 2016-18,2014-09, StatementRevenue from Contracts with Customers (Topic 606), we have reclassified Gain on sale of Cash Flows (Topic 230), Restricted Cash. For the nine months ended September 30, 2017, the Company revised the presentation in our Consolidated Statements of Cash Flowsflight equipment from Other income (expense) to show the changes in the total of cash, cash equivalents, restricted cash and restricted cash equivalents. For the nine months ended September 30, 2016,Revenues on our Consolidated Statement of Cash Flows reflected: (1) changes in restricted cash related toIncome as of March 31, 2018. We believe this better reflects the sale of flight equipment within investing activities;as part of our ordinary activities and (2) changes in restricted cash and restricted cash equivalents relatedconforms our presentation to rents, maintenance payments and security deposits within financing activities. Therefore, the amounts includedthose of our publicly traded peers. The presentation for the ninethree months ended September 30, 2016 haveMarch 31, 2017 has also been reclassified to conform to the current period presentation.presentation:
 Three Months Ended March 31, 2017
Total revenues as previously reported$204,273
Gain on sale of flight equipment759
Total revenues$205,032
The Company’s management has reviewed and evaluated all events or transactions for potential recognition and/or disclosure since the balance sheet date of September 30, 2017March 31, 2018 through the date on which the consolidated financial statements included in this Form 10-Q were issued.
Effective January 1, 2018, the Company adopted FASB ASU No. 2016-15, Statement of Cash Flows (Topic 230), Classification of Certain Cash Receipts and Cash Payments. The standard clarifies how entities should classify certain cash receipts and cash payments on the statement of cash flows. The guidance also clarifies how the predominance principle should be applied when cash receipts and cash payments have aspects of more than one class of cash flows. The update is applied using a retrospective transition method to each period presented. The standard did not have a material impact on our consolidated financial statements and related disclosures.
Effective January 1, 2018, the Company adopted FASB ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606) and related updates, as noted above. Lease contracts within the scope of Accounting Standards Codification (“ASC”) 840, Leases, are specifically excluded from ASU No. 2014-09. The standard’s core principle is that a company will recognize revenue when it transfers promised goods or services to customers in an amount that reflects the consideration to which a company expects to be entitled in exchange for those goods or services. The update is applied using the modified
Aircastle Limited and Subsidiaries
Notes to Unaudited Consolidated Financial Statements
(Dollars in thousands, except per share amounts)
March 31, 2018

retrospective approach. The standard did not have a material impact on our consolidated financial statements and related disclosures.
Effective January 1, 2018, the Company adopted FASB ASU No. 2017-09, Compensation-Stock Compensation (Topic 718), Scope of Modification Accounting. The standard clarifies when changes to the terms or conditions of a share-based payment award must be accounted for as modifications. Entities will apply the modification accounting guidance if the value, vesting conditions or classification of the award changes. In addition, when applicable, disclosure is required to indicate that compensation expense has not changed. The update is applied using a prospective transition method to each period presented. The standard did not have a material impact on our consolidated financial statements and related disclosures.
Principles of Consolidation
The consolidated financial statements include the accounts of Aircastle and all of its subsidiaries. Aircastle consolidates four Variable Interest Entities (“VIEs”) of which Aircastle is the primary beneficiary. All intercompany transactions and balances have been eliminated in consolidation.
We consolidate VIEs in which we have determined that we are the primary beneficiary. We use judgment when deciding: (a) whether an entity is subject to consolidation as a VIE; (b) who the variable interest holders are; (c) the potential expected losses and residual returns of the variable interest holders; and (d) which variable interest holder is the primary beneficiary. When determining which enterprise is the primary beneficiary, we consider: (1) the entity’s purpose and design; (2) which variable interest holder has the power to direct the activities that most significantly impact the entity’s economic performance; and (3) the obligation to absorb losses of the entity or the right to receive benefits from the entity that could potentially be significant to the VIE. When certain events occur, we reconsider whether we are the primary beneficiary of VIEs. We do not reconsider whether we are a primary beneficiary solely because of operating losses incurred by an entity.


Aircastle Limited and Subsidiaries
Notes to Unaudited Consolidated Financial Statements
(Dollars in thousands, except per share amounts)
September 30, 2017

Use of Estimates
The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and accompanying notes. While Aircastle believes that the estimates and related assumptions used in the preparation of the consolidated financial statements are appropriate, actual results could differ from those estimates.
Recent Accounting Pronouncements
On February 25, 2016, the FASB issued Accounting Standards Codification (“ASC”)ASC 842,Leases (“ASC 842”), “Leases,” which replaced the existing guidance in ASC 840, Leases (“ASC 840”). The accounting for leases by lessors basically remained unchanged from the concepts that existed in ASC 840 accounting. The FASB decided that lessors would be precluded from recognizing selling profit and revenue at lease commencement for any sales-type or direct finance lease that does not transfer control of the underlying asset to the lessee. This requirement aligns the notion of what constitutes a sale in the lessor accounting guidance with that in the forthcoming revenue recognition standard, which evaluates whether a sale has occurred from the customer’s perspective. The standard will be effective for public entitiesreporting periods beginning after December 15, 2018. The standard is to be applied on a modified retrospective approach.“modified retrospective” basis with a proposed practical expedient. We plan to adopt the standard on its required effective date of January 1, 2019.2019 and are evaluating the transition method to use. We are also evaluating the impact that ASC 842 will have on our consolidated financial statements and related disclosures. We do not believe that the adoption of the standard will significantly impact our existing or potential lessees' economic decisions to lease aircraft.
In June 2016, the FASB issued ASU No. 2016-13, Financial Instruments - Credit Losses (Topic 326), Measurement of Credit Losses on Financial Instruments. The standard affects entities holding financial assets and net investment in leases that are not accounted for at fair value through net income. The amendments affect loans, debt securities, trade receivables, net investments in leases, off-balance-sheet credit exposures, reinsurance receivables, and any other financial assets not excluded from the scope that have the contractual right to receive cash. The standard is applied on a modified retrospective approach. The standard is effective for annual periods beginning after December 15, 2019, including interim periods within those fiscal years. Early adoption is permitted as early as the fiscal years beginning after December 15, 2018, including
Aircastle Limited and Subsidiaries
Notes to Unaudited Consolidated Financial Statements
(Dollars in thousands, except per share amounts)
March 31, 2018

interim periods within those fiscal years. We are in the process of determining the impact the standard will have on our consolidated financial statements and related disclosures.
In August 2016, the FASB issued ASU No. 2016-15, Statement of Cash Flows (Topic 230), Classification of Certain Cash Receipts and Cash Payments. The standard clarifies how entities should classify certain cash receipts and cash payments on the statement of cash flows. The guidance also clarifies how the predominance principle should be applied when cash receipts and cash payments have aspects of more than one class of cash flows. The update should be applied using a retrospective transition method to each period presented. The standard is effective for annual periods beginning after December 15, 2017, including interim periods within those fiscal years. Early adoption is permitted. The standard will not have a material impact on our consolidated financial statements and related disclosures.
On May 28, 2014, the FASB and the International Accounting Standards Board (the “IASB”) (collectively, “the Boards”), jointly issued ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606) and related updates. Lease contracts within the scope of ASC 840, Leases, are specifically excluded from ASU No. 2014-09. The standard’s core principle is that a company will recognize revenue when it transfers promised goods or services to customers in an amount that reflects the consideration to which a company expects to be entitled in exchange for those goods or services. The standard is effective for public entities beginning after December 15, 2017. The standard allows for either “full retrospective” adoption, meaning the standard is applied to all of the periods presented, or “modified retrospective” adoption, meaning the standard is applied only to the most current period presented in the financial statements. We plan to adopt the standard on its required effective date of January 1, 2018, using the modified retrospective approach. We do not expect the impact of this standard to be material to our consolidated financial statements and related disclosures.
In May 2017, the FASB issued ASU No. 2017-09, Compensation-Stock Compensation (Topic 718), Scope of Modification Accounting. The standard clarifies when changes to the terms or conditions of a share-based payment award must be accounted for as modifications. Entities will apply the modification accounting guidance if the value, vesting

Aircastle Limited and Subsidiaries
Notes to Unaudited Consolidated Financial Statements
(Dollars in thousands, except per share amounts)
September 30, 2017

conditions or classification of the award changes. In addition, when applicable, disclosure is required to indicate that compensation expense has not changed. The update should be applied using a prospective transition method to each period presented. The standard is effective for annual periods beginning after December 15, 2017, including interim periods within those fiscal years. Early adoption is permitted. The standard will not have a material impact on our consolidated financial statements and related disclosures.
Note 2. Fair Value Measurements
Fair value measurements and disclosures require the use of valuation techniques to measure fair value that maximize the use of observable inputs and minimize use of unobservable inputs. These inputs are prioritized as follows:
Level 1: Observable inputs such as quoted prices in active markets for identical assets or liabilities.
Level 2: Inputs other than quoted prices included within Level 1 that are observable, either directly or indirectly, such as quoted prices for similar assets or liabilities or market corroborated inputs.
Level 3: Unobservable inputs for which there is little or no market data and which require us to develop our own assumptions about how market participants price the asset or liability.
The valuation techniques that may be used to measure fair value are as follows:
The market approach uses prices and other relevant information generated by market transactions involving identical or comparable assets or liabilities.
The income approach uses valuation techniques to convert future amounts to a single present amount based on current market expectation about those future amounts.
The cost approach is based on the amount that currently would be required to replace the service capacity of an asset (replacement cost).
The following tables set forth our financial assets as of September 30, 2017March 31, 2018 and December 31, 20162017 that we measured at fair value on a recurring basis by level within the fair value hierarchy. Assets measured at fair value are classified in their entirety based on the lowest level of input that is significant to their fair value measurement. 
  
Fair Value Measurements at September 30, 2017
Using Fair Value Hierarchy
  
Fair Value Measurements at March 31, 2018
Using Fair Value Hierarchy
Fair Value as of September 30, 2017 
Quoted Prices
in Active
Markets for
Identical
Assets
(Level 1)
 
Significant
Other
Observable
Inputs
(Level 2)
 
Significant
Unobservable
Inputs
(Level 3)
 
Valuation
Technique
Fair Value as of March 31, 2018 
Quoted Prices
in Active
Markets for
Identical
Assets
(Level 1)
 
Significant
Other
Observable
Inputs
(Level 2)
 
Significant
Unobservable
Inputs
(Level 3)
 
Valuation
Technique
Assets:                
Cash and cash equivalents$662,649
 $662,649
 $
 $
 Market$210,815
 $210,815
 $
 $
 Market
Restricted cash and cash equivalents20,536
 20,536
 
 
 Market21,524
 21,524
 
 
 Market
Derivative assets2,663
 
 2,663
 
 Market6,428
 
 6,428
 
 Market
Total$685,848
 $683,185
 $2,663
 $
 $238,767
 $232,339
 $6,428
 $
 

   
Fair Value Measurements at December 31, 2017
Using Fair Value Hierarchy
 Fair Value as of December 31, 2017 
Quoted Prices
in Active
Markets for
Identical
Assets
(Level 1)
 
Significant
Other
Observable
Inputs
(Level 2)
 
Significant
Unobservable
Inputs
(Level 3)
 
Valuation
Technique
Assets:         
Cash and cash equivalents$211,922
 $211,922
 $
 $
 Market
Restricted cash and cash equivalents21,935
 21,935
 
 
 Market
Derivative assets3,254
 
 3,254
 
 Market
Total$237,111
 $233,857
 $3,254
 $
  
Aircastle Limited and Subsidiaries
Notes to Unaudited Consolidated Financial Statements
(Dollars in thousands, except per share amounts)
September 30, 2017March 31, 2018

   
Fair Value Measurements at December 31, 2016
Using Fair Value Hierarchy
 Fair Value as of December 31, 2016 
Quoted Prices
in Active
Markets for
Identical
Assets
(Level 1)
 
Significant
Other
Observable
Inputs
(Level 2)
 
Significant
Unobservable
Inputs
(Level 3)
 
Valuation
Technique
Assets:         
Cash and cash equivalents$455,579
 $455,579
 $
 $
 Market
Restricted cash and cash equivalents53,238
 53,238
 
 
 Market
Derivative assets5,735
 
 5,735
 
 Market
Total$514,552
 $508,817
 $5,735
 $
  
Our cash and cash equivalents, along with our restricted cash and cash equivalents balances, consist largely of money market securities that are considered to be highly liquid and easily tradable. These securities are valued using inputs observable in active markets for identical securities and are therefore classified as Level 1 within our fair value hierarchy. Our interest rate derivative included in Level 2 consists of United States dollar-denominated interest rate cap, and the fair value is based on market comparisons for similar instruments. We also considered the credit rating and risk of the counterparty providing the interest rate cap based on quantitative and qualitative factors.
For the three and nine months ended September 30, 2017March 31, 2018 and the year ended December 31, 2016,2017, we had no transfers into or out of Level 3.
We measure the fair value of certain assets and liabilities on a non-recurring basis, when U.S. GAAP requires the application of fair value, including events or changes in circumstances that indicate that the carrying amounts of assets may not be recoverable. Assets subject to these measurements include our investments in unconsolidated joint ventures and aircraft. We account for our investments in unconsolidated joint ventures under the equity method of accounting and record impairment when its fair value is less than its carrying value. We record aircraft at fair value when we determine the carrying value may not be recoverable. Fair value measurements for aircraft in impairment tests are based on an income approach which uses Level 3 inputs, which include the Company’s assumptions and appraisal data as to future cash proceeds from leasing and selling aircraft.
Aircraft Valuation
Transactional Impairments
During the second quarter of 2017, we entered into agreements to sell two Boeing 747-400 production freighter aircraft at the end of their respective leases and one older Boeing 747-400 converted freighter aircraft to its lessee, resulting in impairment charges totaling $79,234, partially offset by maintenance revenue of $13,520. During the third quarter of 2017, we sold one production freighter and one converted freighter aircraft. We expect to sell one production freighter aircraft in the first quarter of 2018.
Annual Recoverability Assessment
We completed our annual recoverability assessment of our aircraft in the second quarter this year. We also performed aircraft-specific analyses where there were changes in circumstances, such as approaching lease expirations. Other than the transactional impairments discussed above, no other impairments were recorded as a result of our annual recoverability assessment.
The recoverability assessment is a comparison of the carrying value of each aircraft to its undiscounted expected future cash flows. We develop the assumptions used in the recoverability assessment, including those relating to current and future demand for each aircraft type, based on management’s experience in the aircraft leasing industry, as well as information received from third-party sources. Estimates of the undiscounted cash flows for each aircraft type are impacted by changes

Aircastle Limited and Subsidiaries
Notes to Unaudited Consolidated Financial Statements
(Dollars in thousands, except per share amounts)
September 30, 2017

in contracted and future expected lease rates, residual values, expected scrap values, economic conditions and other factors.
Management believes that the net book value of each aircraft is currently supported by the estimated future undiscounted cash flows expected to be generated by that aircraft, and accordingly, no aircraft were impaired as a consequence of our annual recoverability assessment. However, if our estimates or assumptions change, we may revise our cash flow assumptions and record future impairment charges. While we believe that the estimates and related assumptions used in the annual recoverability assessment are appropriate, actual results could differ from those estimates.
Financial Instruments
Our financial instruments, other than cash, consist principally of cash equivalents, restricted cash and cash equivalents, accounts receivable, accounts payable, amounts borrowed under financings and interest rate derivatives. The fair value of cash, cash equivalents, restricted cash and cash equivalents, accounts receivable and accounts payable approximates the carrying value of these financial instruments because of their short-term nature.
The fair value of our senior notes is estimated using quoted market prices. The fair values of all our other financings are estimated using a discounted cash flow analysis, based on our current incremental borrowing rates for similar types of borrowing arrangements.
The carrying amounts and fair values of our financial instruments at September 30, 2017March 31, 2018 and December 31, 2016 are2017 were as follows:
September 30, 2017 December 31, 2016March 31, 2018 December 31, 2017
Carrying  Amount
of Liability
 
Fair Value
of Liability
 
Carrying
Amount
of Liability
 
Fair Value
of Liability
Carrying  Amount
of Liability
 
Fair Value
of Liability
 
Carrying
Amount
of Liability
 
Fair Value
of Liability
Credit Facilities$100,000
 $100,000
 $175,000
 $175,000
Unsecured Term Loan$120,000
 $120,000
 $120,000
 $120,000
120,000
 120,000
 120,000
 120,000
ECA Financings236,879
 243,880
 305,276
 316,285
218,006
 219,461
 227,491
 232,030
Bank Financings651,434
 649,557
 933,541
 925,783
617,806
 619,245
 634,898
 634,132
Senior Notes3,200,000
 3,422,824
 3,200,000
 3,387,125
3,200,000
 3,296,195
 3,200,000
 3,367,245
All of our financial instruments are classified as Level 2 with the exception of our Senior Notes, which are classified as Level 1.




Aircastle Limited and Subsidiaries
Notes to Unaudited Consolidated Financial Statements
(Dollars in thousands, except per share amounts)
March 31, 2018

Note 3. Lease Rental Revenues and Flight Equipment Held for Lease
Minimum future annual lease rentals contracted to be received under our existing operating leases of flight equipment at September 30, 2017March 31, 2018 were as follows:
Year Ending December 31, Amount
Remainder of 2017 $163,587
2018 630,237
2019 532,026
2020 424,140
2021 350,093
Thereafter 830,674
Total $2,930,757



Aircastle Limited and Subsidiaries
Notes to Unaudited Consolidated Financial Statements
(Dollars in thousands, except per share amounts)
September 30, 2017


Year Ending December 31, Amount
Remainder of 2018 $544,676
2019 645,622
2020 526,357
2021 412,130
2022 319,117
Thereafter 668,344
Total $3,116,246
Geographic concentration of lease rental revenue earned from flight equipment held for lease was as follows:
Three Months Ended September 30, Nine Months Ended September 30,Three Months Ended March 31,
Region2017 2016 2017 20162018 2017
Asia and Pacific35% 40% 38% 40%35% 40%
Europe24% 22% 23% 23%29% 22%
Middle East and Africa12% 12% 12% 12%11% 12%
North America9% 7% 8% 6%8% 7%
South America20% 19% 19% 19%17% 19%
Total100% 100% 100% 100%100% 100%

The classification of regions in the tables above and in the table and discussion below is determined based on the principal location of the lessee of each aircraft.
The following table shows the number of lessees with lease rental revenue of at least 5% and their combined total percentage of lease rental revenue for the years indicated:
 Three Months Ended September 30, Nine Months Ended September 30,
 2017 2016 2017 2016
 Number of Lessees 
Combined % of Lease
Rental Revenue
 Number of Lessees 
Combined % of Lease
Rental Revenue
 Number of Lessees 
Combined % of Lease
Rental Revenue
 Number of Lessees Combined % of Lease
Rental Revenue
Largest lessees by lease rental revenue4 25% 4 25% 4 24% 4 25%
 Three Months Ended March 31,
 2018 2017
 Number of Lessees 
Combined % of Lease
Rental Revenue
 Number of Lessees Combined % of Lease
Rental Revenue
Largest lessees by lease rental revenue3 19% 3 19%
The following table sets forth revenue attributable to individual countries representingAt March 31, 2018 and December 31, 2017, no country represented at least 10% of total revenue (including maintenance revenue) in any year based on each lessee’scounterparty’s principal place of business for the years indicated:
 Three Months Ended September 30, Nine Months Ended September 30,
 2017 2016 2017 2016
CountryRevenue 
% of
Total
Revenue
 Revenue 
% of
Total
Revenue
 Revenue 
% of
Total
Revenue
 Revenue 
% of
Total
Revenue
Indonesia(1)
$
 —% $21,745
 11% $
 —% $61,195
 11%
_______________
(1)Total revenue attributable to Indonesia was less than 10% for the three and nine months ended September 30, 2017.

business.









Aircastle Limited and Subsidiaries
Notes to Unaudited Consolidated Financial Statements
(Dollars in thousands, except per share amounts)
September 30, 2017March 31, 2018


Geographic concentration of net book value of flight equipment (including flight equipment held for lease and net investment in finance and sales-type leases, or "net“net book value"value”) was as follows:
September 30, 2017 December 31, 2016March 31, 2018 December 31, 2017
Region
Number
of
Aircraft
 
Net Book
Value %
 
Number
of
Aircraft
 
Net Book
Value %
Number
of
Aircraft
 
Net Book
Value %
 
Number
of
Aircraft
 
Net Book
Value %
Asia and Pacific54
 31% 61
 38%62
 31% 59
 30%
Europe67
 28% 66
 23%88
 31% 92
 32%
Middle East and Africa13
 9% 14
 11%14
 8% 15
 9%
North America34
 11% 26
 8%30
 10% 32
 10%
South America24
 21% 23
 18%26
 19% 25
 19%
Off-lease

% 3
(1) 
2%2
(1) 
1% 1
(2) 
%
Total192
 100% 193
 100%222
 100% 224
 100%
 
_______________
(1)Consisted of one Airbus A330-200A321-200 aircraft and one Boeing 747-400ERF aircraft, both of which were delivered on lease to customers in the second quarter of 2018.
(2)Consisted of one Airbus A321-200 aircraft, which was delivered on lease to a customer in February 2017, and two Airbus A321-200 aircraft, which were both delivered on lease to a customer during the second quarter of 2017.2018.
At September 30, 2017March 31, 2018 and December 31, 2016,2017, no country represented at least 10% of net book value of flight equipment based on each lessee’s principal place of business.
At September 30, 2017March 31, 2018 and December 31, 20162017, the amounts of lease incentive liabilities recorded in maintenance payments on our Consolidated Balance Sheets were $9,637$13,813 and $14,931,$11,496, respectively.
Note 4. Net Investment in Finance and Sales-Type Leases
At September 30, 2017March 31, 2018, our net investment in finance and sales-type leases consisted of 2830 aircraft. The following table lists the components of our net investment in finance and sales-type leases at September 30, 2017March 31, 2018:
 Amount Amount
Total lease payments to be received $297,061
 $314,311
Less: Unearned income (153,253) (162,620)
Estimated residual values of leased flight equipment (unguaranteed) 344,600
 381,682
Net investment in finance and sales-type leases $488,408
 $533,373
At September 30, 2017March 31, 2018, minimum future lease payments on finance and sales-type leases are as follows:
Year Ending December 31, Amount Amount
Remainder of 2017 $14,948
2018 54,842
Remainder of 2018 $50,583
2019 54,507
 66,285
2020 52,287
 63,840
2021 42,691
 53,057
2022 42,460
Thereafter 77,786
 38,086
Total lease payments to be received $297,061
 $314,311


Aircastle Limited and Subsidiaries
Notes to Unaudited Consolidated Financial Statements
(Dollars in thousands, except per share amounts)
September 30, 2017March 31, 2018


Note 5. Unconsolidated Equity Method Investments
We have joint ventures with an affiliate of Ontario Teachers’ Pension Plan (“Teachers’”) and with the leasing arm of the Industrial Bank of Japan, Limited (“IBJL”).
At September 30, 2017,March 31, 2018, the net book value of both joint ventures’ thirteentwelve aircraft was approximately $661,000.$634,000.
 Amount Amount
Investment in joint ventures at December 31, 2016 $72,977
Investment in joint ventures at December 31, 2017 $76,982
Investment in joint ventures 2,117
 356
Earnings from joint ventures, net of tax 5,804
 1,782
Distributions (4,800) (900)
Investment in joint ventures at September 30, 2017 $76,098
Investment in joint ventures at March 31, 2018 $78,220
The Company has recorded in its Consolidated Balance Sheet an $11,967a $13,200 guarantee liability in Maintenance payments and a $5,100 guarantee liability in Security deposits representing its share of the respective exposures.
Note 6. Variable Interest Entities
Aircastle consolidates four VIEs of which it is the primary beneficiary. The operating activities of these VIEs are limited to acquiring, owning, leasing, maintaining, operating and, under certain circumstances, selling the six aircraft discussed below.
ECA Financings
Aircastle, through various subsidiaries, each of which is owned by a charitable trust (such entities, collectively the “Air Knight VIEs”), has entered into six different twelve-year term loans, which are supported by guarantees from Compagnie Française d'Assurance pour le Commerce Extérieur, (“COFACE”), the French government sponsored export credit agency (“ECA”). We refer to these COFACE-supported financings as “ECA Financings.”
Aircastle is the primary beneficiary of the Air Knight VIEs, as we have the power to direct the activities of the VIEs that most significantly impact the economic performance of such VIEs and we bear the significant risk of loss and participate in gains through a finance lease. The activity that most significantly impacts the economic performance is the leasing of aircraft of which our wholly owned subsidiary is the servicer and is responsible for managing the relevant aircraft. There is a cross collateralization guarantee between the Air Knight VIEs. In addition, Aircastle guarantees the debt of the Air Knight VIEs.
The only assets that the Air Knight VIEs have on their books are financing leases that are eliminated in the consolidated financial statements. The related aircraft, with a net book value as of September 30, 2017March 31, 2018 of $417,439,$408,370, were included in our flight equipment held for lease. The consolidated debt outstanding, net of debt issuance costs, of the Air Knight VIEs as of September 30, 2017March 31, 2018 is $230,858.$212,975.





Aircastle Limited and Subsidiaries
Notes to Unaudited Consolidated Financial Statements
(Dollars in thousands, except per share amounts)
September 30, 2017March 31, 2018


Note 7. Secured and Unsecured Debt Financings
The outstanding amounts of our secured and unsecured term debt financings are as follows:
At September 30, 2017 At December 31, 2016At March 31, 2018 
At
December 31, 2017
Debt Obligation
Outstanding
Borrowings
 Number of Aircraft Interest Rate 
Final Stated
Maturity
 Outstanding
Borrowings
Outstanding
Borrowings
 Number of Aircraft Interest Rate 
Final Stated
Maturity
 Outstanding
Borrowings
Secured Debt Financings:          
ECA Financings(1)
$236,879
 6
 3.02% to 3.96% 12/03/21 to 11/30/24 $305,276
$218,006
 6
 3.02% to 3.96% 12/03/21 to 11/30/24 $227,491
Bank Financings(2)
651,434
 23
 2.22% to 4.45% 9/11/18 to 01/19/26 933,541
617,806
 23
 2.22% to 4.49% 09/11/18 to 01/19/26 634,898
Less: Debt Issuance Costs(13,439) 
 (19,783)(11,623) 
 (12,515)
Total secured debt financings, net of debt issuance costs874,874
 29
 1,219,034
824,189
 29
 849,874
          
Unsecured Debt Financings:          
Senior Notes due 2017
   6.75% 04/15/17 500,000
Senior Notes due 2018400,000
   4.625% 12/15/18 400,000
400,000
   4.625% 12/15/18 400,000
Senior Notes due 2019500,000
   6.25% 12/01/19 500,000
500,000
   6.25% 12/01/19 500,000
Senior Notes due 2020300,000
   7.625% 04/15/20 300,000
300,000
   7.625% 04/15/20 300,000
Senior Notes due 2021500,000
   5.125% 03/15/21 500,000
500,000
   5.125% 03/15/21 500,000
Senior Notes due 2022500,000
   5.50% 02/15/22 500,000
500,000
   5.50% 02/15/22 500,000
Senior Notes due 2023500,000
   5.00% 04/01/23 500,000
500,000
   5.00% 04/01/23 500,000
Senior Notes due 2024500,000
   4.125% 05/01/24 
500,000
   4.125% 05/01/24 500,000
Unsecured Term Loan120,000
   3.320% 04/28/19 120,000
120,000
   4.125% 04/28/19 120,000
Revolving Credit Facilities
   N/A 11/21/19 to 05/13/20 
100,000
   3.83% 11/21/19 to 05/13/20 175,000
Less: Debt Issuance Costs(33,760)   (32,789)(28,776)   (31,268)
Total unsecured debt financings, net of debt issuance costs3,286,240
   3,287,211
3,391,224
   3,463,732
          
Total secured and unsecured debt financings, net of debt issuance costs$4,161,114
   $4,506,245
$4,215,413
   $4,313,606
 
        
(1)The borrowings under these financings at September 30, 2017March 31, 2018 have a weighted-average rate of interest of 3.59%3.58%.
(2)The borrowings under these financings at September 30, 2017March 31, 2018 have a weighted-average fixed rate of interest of 3.45%4.16%.

Unsecured Debt Financings:
Senior Notes due 2024
On March 6, 2017, Aircastle issued $500,000 aggregate principal amount of Senior Notes due 2024 (the "Senior Notes due 2024") at par. The Senior Notes due 2024 will mature on May 1, 2024 and bear interest at the rate of 4.125% per annum, payable semi-annually on May 1 and November 1 of each year, commencing on November 1, 2017. Interest accrues on the Senior Notes due 2024 from March 20, 2017.
Prior to February 1, 2024, we may redeem the Senior Notes due 2024 at any time at a redemption price equal to (a) 100% of the principal amount of the notes redeemed, plus accrued and unpaid interest thereon to, but not including, the redemption date and (b) the sum of the present values of the remaining scheduled payments of principal and interest on the notes from the redemption date through the maturity date of the notes (computed using a discount rate equal to the Treasury

Aircastle Limited and Subsidiaries
Notes to Unaudited Consolidated Financial Statements
(Dollars in thousands, except per share amounts)
September 30, 2017

Rate (as defined in the indenture governing the notes) as of such redemption date plus 0.5%). In addition, prior to May 1, 2020, we may redeem up to 40% of the aggregate principal amount of the notes issued under the indenture at a redemption price equal to 104.125% plus accrued and unpaid interest thereon to, but not including, the redemption date, with the net proceeds of certain equity offerings. If the Company undergoes a change of control, it must offer to repurchase the Senior Notes due 2024 at 101% of the principal amount, plus accrued and unpaid interest. The Senior Notes due 2024 are not guaranteed by any of the Company's subsidiaries or any third-party.
On April 17, 2017, we paid off our Senior Notes due 2017.
Revolving Credit Facilities
At September 30, 2017, we had no amounts outstanding under these facilities.
As of September 30, 2017,March 31, 2018, we were in compliance with all applicable covenants in our financings.
Note 8. Shareholders' Equity and Share-Based Payment
During the ninethree months ended September 30, 2017,March 31, 2018, the Company issued 315,588291,876 restricted common shares and issued 224,147306,359 performance share units (“PSUs”). These awards were made under the Aircastle Limited Amended and Restated 2014 Omnibus Incentive Plan.
During the ninethree months ended September 30, 2017,March 31, 2018, the Company incurred share-based compensation expense of $7,014$1,504 related to restricted common shares and $3,622$874 related to PSUs, of which $1,611 and $1,581, respectively, pertains to accelerated share-based compensation expense in regards to the separation and disability of our former Chief Executive Officer under the terms of his employment and share-based award agreements.PSUs.
As of September 30, 2017,March 31, 2018, there was $5,789$8,888 of unrecognized compensation cost related to unvested restricted common share-based payments and $4,658$9,215 of unrecognized compensation cost related to unvested PSU share-based payments that are expected to be recognized over a weighted-average remaining period of 2.62.13 years.
During March 2018, we repurchased 354,737 common shares at an aggregate cost of $6,918, including commissions.
Aircastle Limited and Subsidiaries
Notes to Unaudited Consolidated Financial Statements
(Dollars in thousands, except per share amounts)
March 31, 2018

At March 31, 2018, the remaining dollar value of shares that may be repurchased under the repurchase program approved by our Board of Directors on February 9, 2016 is $88,970.
Note 9. Dividends
The following table sets forth the quarterly dividends declared by our Board of Directors for the periods covered in this report:
Declaration Date
Dividend per
Common  Share
 
Aggregate
Dividend
Amount
 Record Date Payment Date
Dividend per
Common  Share
 
Aggregate
Dividend
Amount
 Record Date Payment Date
February 9, 2018$0.28
 $22,085
 February 28, 2018 March 15, 2018
October 31, 2017$0.28
 $22,039
 November 30, 2017 December 15, 2017
August 4, 2017$0.26
 $20,464
 August 31, 2017 September 15, 2017$0.26
 $20,464
 August 31, 2017 September 15, 2017
May 2, 2017$0.26
 $20,482
 May 31, 2017 June 15, 2017$0.26
 $20,482
 May 31, 2017 June 15, 2017
February 9, 2017$0.26
 $20,466
 February 28, 2017 March 15, 2017$0.26
 $20,466
 February 28, 2017 March 15, 2017
October 28, 2016$0.26
 $20,434
 November 29, 2016 December 15, 2016
August 2, 2016$0.24
 $18,872
 August 26, 2016 September 15, 2016
Note 10. Earnings Per Share
We include all common shares granted under our incentive compensation plan which remain unvested (“restricted common shares”) and contain non-forfeitable rights to dividends or dividend equivalents, whether paid or unpaid (“participating securities”), in the number of shares outstanding in our basic earnings per share calculations using the two-class method. All of our restricted common shares are currently participating securities. Our PSUs are contingently issuable shares which are included in our diluted earnings per share calculations which do not include voting or dividend rights.

Aircastle Limited and Subsidiaries
Notes to Unaudited Consolidated Financial Statements
(Dollars in thousands, except per share amounts)
September 30, 2017

Under the two-class method, earnings per common share is computed by dividing the sum of distributed earnings allocated to common shareholders and undistributed earnings allocated to common shareholders by the weighted-average number of common shares outstanding for the period. In applying the two-class method, distributed and undistributed earnings are allocated to both common shares and restricted common shares based on the total weighted-average shares outstanding during the period.
Three Months Ended September 30, Nine Months Ended September 30,Three Months Ended March 31,
2017 2016 2017 20162018 2017
Weighted-average shares:          
Common shares outstanding78,237,199
 77,989,933
 78,197,091
 78,230,011
78,366,588
 78,176,705
Restricted common shares569,617
 680,249
 569,453
 646,299
431,161
 503,802
Total weighted-average shares78,806,816
 78,670,182
 78,766,544
 78,876,310
78,797,749
 78,680,507
          
Percentage of weighted-average shares:          
Common shares outstanding99.28% 99.14% 99.28% 99.18%99.45% 99.36%
Restricted common shares0.72% 0.86% 0.72% 0.82%0.55% 0.64%
Total percentage of weighted-average shares100.00% 100.00% 100.00% 100.00%100.00% 100.00%






Aircastle Limited and Subsidiaries
Notes to Unaudited Consolidated Financial Statements
(Dollars in thousands, except per share amounts)
March 31, 2018

The calculations of both basic and diluted earnings per share are as follows:
Three Months Ended September 30, Nine Months Ended September 30,Three Months Ended March 31,
2017 2016 2017 20162018 2017
Earnings per share – Basic:          
Net income$57,431
 $27,437
 $92,754
 $83,729
$57,547
 $42,439
Less: Distributed and undistributed earnings allocated to restricted common shares(1)
(415) (237) (671) (686)(315) (272)
Earnings available to common shareholders – Basic$57,016
 $27,200
 $92,083
 $83,043
$57,232
 $42,167
          
Weighted-average common shares outstanding – Basic78,237,199
 77,989,933
 78,197,091
 78,230,011
78,366,588
 78,176,705
          
Earnings per common share – Basic$0.73
 $0.35
 $1.18
 $1.06
$0.73
 $0.54
          
Earnings per share – Diluted:          
Net income$57,431
 $27,437
 $92,754
 $83,729
$57,547
 $42,439
Less: Distributed and undistributed earnings allocated to restricted common shares(1)
(415) (237) (671) (686)(315) (272)
Earnings available to common shareholders – Diluted$57,016
 $27,200
 $92,083
 $83,043
$57,232
 $42,167
          
Weighted-average common shares outstanding – Basic78,237,199
 77,989,933
 78,197,091
  78,230,011
78,366,588
  78,176,705
Effect of dilutive shares(2)
137,810
 32,235
 169,053
 35,804
228,019
 194,848
Weighted-average common shares outstanding – Diluted78,375,009
 78,022,168
 78,366,144
  78,265,815
78,594,607
  78,371,553
          
Earnings per common share – Diluted$0.73
 $0.35
 $1.18
  $1.06
$0.73
  $0.54
 
        
(1)For the three months ended September 30,March 31, 2018 and 2017, and 2016, distributed and undistributed earnings to restricted shares were 0.72%0.55% and 0.86%, respectively, of net income. For the nine months ended September 30, 2017 and 2016, distributed and undistributed earnings to restricted shares were 0.72% and 0.82%0.64%, respectively, of net income. The amount of restricted share forfeitures for allboth periods present is immaterial to the allocation of distributed and undistributed earnings.
(2)For allboth periods presented, dilutive shares represented contingently issuable shares.


Aircastle Limited and Subsidiaries
Notes to Unaudited Consolidated Financial Statements
(Dollars in thousands, except per share amounts)
September 30, 2017

Note 11. Income Taxes
Income taxes have been provided based on the tax laws and rates in countries in which our operations are conducted and income is earned. The Company received an assurance from the Bermuda Minister of Finance that it would be exempted from local income, withholding and capital gains taxes until March 2035. Consequently, the provision for income taxes relates to income earned by certain subsidiaries of the Company which are located in, or earn income in, jurisdictions that impose income taxes, primarily Ireland, Singapore and the United States.
The sources of income from continuing operations before income taxes and earnings of our unconsolidated equity method investments for the three and nine months ended September 30,March 31, 2018 and 2017 and 2016 were as follows: 
Three Months Ended September 30, Nine Months Ended September 30,Three Months Ended March 31,
2017 2016 2017 20162018 2017
U.S. operations$531
 $(92) $2,029
 $1,652
$683
 $596
Non-U.S. operations61,799
 28,182
 93,457
 85,469
54,238
 41,447
Income from continuing operations before income taxes and earnings of unconsolidated equity method investments$62,330
 $28,090
 $95,486
 $87,121
$54,921
 $42,043
All of our aircraft-owning subsidiaries that are recognized as corporations for U.S. tax purposes are non-U.S. corporations. These non-U.S. subsidiaries generally earn income from sources outside the United States and typically are not subject to U.S. federal, state or local income taxes unless they operate within the U.S., in which case they may be subject to federal, state and local income taxes. The aircraft owning subsidiaries resident in Ireland Mauritius and SingaporeMauritius are subject to tax in those respective jurisdictions.
Aircastle Limited and Subsidiaries
Notes to Unaudited Consolidated Financial Statements
(Dollars in thousands, except per share amounts)
March 31, 2018

We have a U.S. based subsidiary which provides management services to our non-U.S. subsidiaries and is subject to U.S. federal, state and local income taxes. We also have Ireland and Singapore based subsidiaries which provide management services to our non-U.S. subsidiaries and are subject to tax in those respective jurisdictions.
The consolidated income tax expense for the three and nine months ended September 30,March 31, 2018 and 2017 and 2016 was determined based on estimates of the Company’s consolidated effective income tax rates for the years ending December 31, 20172018 and 2016,2017, respectively.
The Company’s effective tax rate (“ETR”) for the three and nine months ended September 30, 2017March 31, 2018 was 9.9% and 8.9%(1.5)%, respectively, compared to 8.8% and 10.1%4.4%, respectively, for the three and nine months ended September 30, 2016.March 31, 2017. First quarter 2018 included a tax benefit of $2,779 related to the Singapore rate reduction from 10% to 8%, which was treated as a discrete item. Excluding this tax benefit, the ETR would have been 3.6%. Movements in the effective tax ratesETR are generally caused by changes in the proportion of the Company’s pre-tax earnings in taxable and non-tax jurisdictions.
Differences between statutory income tax rates and our effective income tax rates applied to pre-tax income from continuing operations consisted of the following:
 Three Months Ended March 31,
 2018 2017
Notional U.S. federal income tax expense at the statutory rate$11,533
 $14,715
U.S. state and local income tax, net48
 41
Non-U.S. operations:   
Bermuda(8,283) (8,828)
Ireland(317) 542
Singapore(2,824) (2,927)
Other low tax jurisdictions(808) (1,440)
Non-deductible expenses in the U.S.(193) (249)
Other
 (8)
Income tax (benefit) provision$(844) $1,846
Note 12. Interest, Net
The following table shows the components of interest, net:
 Three Months Ended March 31,
 2018 2017
Interest on borrowings and other liabilities$53,978
 $58,839
Amortization of deferred losses related to interest rate derivatives301
 581
Amortization of deferred financing fees and debt discount3,532
 4,155
Interest expense57,811
 63,575
Less: Interest income(703) (414)
Less: Capitalized interest
 (93)
Interest, net$57,108
 $63,068




Aircastle Limited and Subsidiaries
Notes to Unaudited Consolidated Financial Statements
(Dollars in thousands, except per share amounts)
September 30, 2017March 31, 2018

 Three Months Ended September 30, Nine Months Ended September 30,
 2017 2016 2017 2016
Notional U.S. federal income tax expense at the statutory rate$21,815
 $9,831
 $33,420
 $30,492
U.S. state and local income tax, net33
 14
 122
 139
Non-U.S. operations:       
Bermuda(12,260) (6,025) (10,632) (16,687)
Ireland(315) 82
 (569) 2,155
Singapore(1,518) (823) (9,107) (4,874)
Other low tax jurisdictions(1,450) (752) (4,377) (2,835)
Non-deductible expenses in the U.S.(104) 133
 (298) 418
Other(6) (2) (23) (26)
Provision for income taxes$6,195
 $2,458
 $8,536
 $8,782
Note 12. Interest, Net
The following table shows the components of interest, net:
 Three Months Ended September 30, Nine Months Ended September 30,
 2017 2016 2017 2016
Interest on borrowings and other liabilities(1)
$54,527
 $57,589
 $170,225
 $166,692
Amortization of deferred losses related to interest rate derivatives569
 705
 1,725
 9,074
Amortization of deferred financing fees and debt discount(2)
6,735
 4,097
 15,860
 13,567
Interest expense61,831
 62,391
 187,810
 189,333
Less: Interest income(1,061) (546) (2,089) (768)
Less: Capitalized interest(134) (48) (345) (75)
Interest, net$60,636
 $61,797
 $185,376
 $188,490

(1)Includes $1,070 and $2,058 of loan prepayment fees related to the sale of aircraft during the three and nine months ended September 30, 2017, respectively, and $0 and $1,509 of loan prepayment fees related to the sale of aircraft during the three and nine months ended September 30, 2016.
(2)Includes $3,019 and $4,005 in deferred financing fees written off related to the prepayment of debt in connection with the sale of aircraft during the three and nine months ended September 30, 2017, respectively, and $0 and $1,972 in deferred financing fees written off related to the prepayment of debt in connection with the sale of aircraft during the three and nine months ended September 30, 2016.









Aircastle Limited and Subsidiaries
Notes to Unaudited Consolidated Financial Statements
(Dollars in thousands, except per share amounts)
September 30, 2017

Note 13. Commitments and Contingencies
At September 30, 2017,March 31, 2018, we had commitments to acquire 6437 aircraft for $1,803,810,$1,475,400, including 25 Embraer E-Jet E2 aircraft.
Commitments, including $129,218 of progress payments, contractual price escalations and other adjustments for these aircraft, at September 30, 2017,March 31, 2018, net of amounts already paid, are as follows:
Year Ending December 31, Amount Amount
Remainder of 2017 $862,760
2018 52,518
Remainder of 2018 $488,468
2019 371,673
 470,073
2020 375,216
 375,216
2021 141,643
 141,643
2022 
Thereafter 
 
Total $1,803,810
 $1,475,400
As of April 27, 2018, we had commitments to acquire 39 aircraft for $1,532,000.
Note 14. Other Assets
The following table describes the principal components of other assets on our Consolidated Balance Sheets as of:
September 30,
2017
 December 31,
2016
March 31,
2018
 December 31,
2017
Deferred income tax asset$1,736
 $1,902
$350
 $497
Lease incentives and lease premiums, net of amortization of $38,827 and $39,638, respectively69,721
 96,587
Lease incentives and lease premiums, net of amortization of $36,934 and $41,246, respectively71,657
 74,515
Flight equipment held for sale3,627
 3,834
32,286
 707
Aircraft purchase deposits and progress payments28,541
 12,923
22,604
 23,704
Fair value of interest rate cap2,663
 5,735
6,428
 3,254
Note receivable(1)
8,352
 10,000
Other assets25,107
 27,417
31,977
 28,533
Total other assets$131,395
 $148,398
$173,654
 $141,210
______________

(1)Related to the sale of aircraft during the year ended December 31, 2017.
Note 15. Accounts Payable, Accrued Expenses and Other Liabilities
The following table describes the principal components of accounts payable, accrued expenses and other liabilities recorded on our Consolidated Balance Sheets as of:
 September 30,
2017
 December 31,
2016
Accounts payable and accrued expenses$33,499
 $24,337
Deferred income tax liability42,706
 44,241
Accrued interest payable56,611
 43,107
Lease discounts, net of amortization of $35,296 and $29,016, respectively12,875
 15,842
Total accounts payable, accrued expenses and other liabilities$145,691
 $127,527




Aircastle Limited and Subsidiaries
Notes to Unaudited Consolidated Financial Statements
(Dollars in thousands, except per share amounts)
September 30, 2017

Note 16. Accumulated Other Comprehensive Loss
The following table describes the principal components of accumulated other comprehensive loss recorded on our Consolidated Balance Sheets:
Changes in accumulated other comprehensive loss by component(1)
Three Months Ended September 30, Nine Months Ended September 30,
 2017 2016 2017 2016
Beginning balance$(2,396) $(4,845) $(3,552) $(13,213)
Amounts recognized in other comprehensive loss on derivatives, net of tax expense of $0 for all periods presented
 
 
 (690)
Amounts reclassified from accumulated other comprehensive loss into income, net of tax expense of $0 for all periods presented569
 705
 1,725
 9,763
   Net current period other comprehensive income569
 705
 1,725
 9,073
Ending balance$(1,827) $(4,140) $(1,827) $(4,140)
(1) All amounts are net of tax. Amounts in parentheses indicate debits.
Reclassifications from accumulated other comprehensive loss(1)
Three Months Ended September 30, Nine Months Ended September 30,
 2017 2016 2017 2016
Amount of effective amortization of net deferred interest rate derivative losses(2)
$569
 $705
 $1,725
 $9,074
Effective amount of net settlements of interest rate derivatives, net of tax expense of $0 for all periods presented
 
 
 689
Amount of loss reclassified from accumulated other comprehensive loss into income$569
 $705
 $1,725
 $9,763
(1) All amounts are net of tax.
(2) Included in interest expense.
At September 30, 2017, the amount of deferred net loss expected to be reclassified from OCI into interest expense over the next twelve months related to our terminated interest rate derivatives is $1,361.
 March 31,
2018
 December 31,
2017
Accounts payable and accrued expenses$34,294
 $50,948
Deferred income tax liability37,636
 36,547
Accrued interest payable55,074
 38,129
Lease discounts, net of amortization of $38,103 and $36,111, respectively12,957
 14,597
Total accounts payable, accrued expenses and other liabilities$139,961
 $140,221

ITEM 2. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS
This management’s discussion and analysis of financial condition and results of operations contains forward-looking statements that involve risks, uncertainties and assumptions. You should read the following discussion in conjunction with our historical consolidated financial statements and the notes thereto appearing elsewhere in this report. The results of operations for the periods reflected herein are not necessarily indicative of results that may be expected for future periods, and our actual results may differ materially from those discussed in the forward-looking statements as a result of various factors, including but not limited to those described under “Risk Factors” and included in our Annual Report on Form 10-K for the year ended December 31, 20162017 filed with the Securities and Exchange Commission (the “SEC”). Our consolidated financial statements are prepared in accordance with accounting principles generally accepted in the United States, or U.S. GAAP, and, unless otherwise indicated, the other financial information contained in this report has also been prepared in accordance with U.S. GAAP. Unless otherwise indicated, all references to “dollars” and “$” in this report are to, and all monetary amounts in this report are presented in, U.S. dollars.
All statements included or incorporated by reference in this Quarterly Report on Form 10-Q (this “report”), other than characterizations of historical fact, are forward-looking statements within the meaning of the federal securities laws, including the Private Securities Litigation Reform Act of 1995. Examples of forward-looking statements include, but are not necessarily limited to, statements relating to our ability to acquire, sell, lease or finance aircraft, raise capital, pay dividends, and increase revenues, earnings, EBITDA, Adjusted EBITDA and Adjusted Net Income and the global aviation industry and aircraft leasing sector. Words such as “anticipates,” “expects,” “intends,” “plans,” “projects,” “believes,” “may,” “will,” “would,” “could,” “should,” “seeks,” “estimates” and variations on these words and similar expressions are intended to identify such forward-looking statements. These statements are based on our historical performance and that of our subsidiaries and on our current plans, estimates and expectations and are subject to a number of factors that could lead to actual results materially different from those described in the forward-looking statements; Aircastle can give no assurance that its expectations will be attained. Accordingly, you should not place undue reliance on any such forward-looking statements which are subject to certain risks and uncertainties that could cause actual results to differ materially from those anticipated as of the date of this report. These risks or uncertainties include, but are not limited to, those described from time to time in Aircastle’s filings with the SEC and previously disclosed under “Risk Factors” in Part I - Item 1A of Aircastle’s 20162017 Annual Report on Form 10-K and elsewhere in this report. In addition, new risks and uncertainties emerge from time to time, and it is not possible for Aircastle to predict or assess the impact of every factor that may cause its actual results to differ from those contained in any forward-looking statements. Such forward-looking statements speak only as of the date of this report. Aircastle expressly disclaims any obligation to revise or update publicly any forward-looking statement to reflect future events or circumstances.
WEBSITE AND ACCESS TO THE COMPANY’S REPORTS
The Company’s Internet website can be found at www.aircastle.com. Our annual reports on Forms 10-K, quarterly reports on Forms 10-Q, current reports on Form 8-K, and amendments to those reports filed or furnished pursuant to Section 13(a) or 15(d) of the Securities Exchange Act of 1934 (the “Exchange Act”) are available free of charge through our website under “Investors — SEC Filings” as soon as reasonably practicable after they are electronically filed with, or furnished to, the SEC.
Statements and information concerning our status as a Passive Foreign Investment Company (“PFIC”) for U.S. taxpayers are also available free of charge through our website under “Investors — Tax Information (PFIC).”
Our Corporate Governance Guidelines, Code of Business Conduct and Ethics, and Board of Directors committee charters (including the charters of the Audit Committee, Compensation Committee, and Nominating and Corporate Governance Committee) are available free of charge through our website under “Investors — Corporate Governance.” In addition, our Code of Ethics for the Chief Executive and Senior Financial Officers, which applies to our Chief Executive Officer, Chief Financial Officer, Chief Accounting Officer, Treasurer and Controller, is available in print, free of charge, to any shareholder upon request to Investor Relations, Aircastle Limited, c/o Aircastle Advisor LLC, 201 Tresser Boulevard, Suite 400, Stamford, Connecticut 06901.
The information on the Company’s Internet website is not part of, or incorporated by reference, into this report, or any other report we file with, or furnish to, the SEC.

OVERVIEW
Aircastle acquires, leases, and sells commercial jet aircraft to airlines throughout the world. As of September 30, 2017,March 31, 2018, we owned and managed on behalf of our joint ventures 205234 aircraft leased to 7181 lessees located in 3844 countries. Our aircraft are managed by an experienced team based in the United States, Ireland and Singapore. Our aircraft are subject to net leases whereby the lessee is generally responsible for maintaining the aircraft and paying operational, maintenance and insurance costs. In many cases, however, we are obligated to pay a portion of specified maintenance or modification costs. As of September 30, 2017,March 31, 2018, the net book value (including flight equipment held for lease and net investment in finance and sales-type leases, or "net book value") was $5.98$6.68 billion compared to $6.51to$6.73 billion at December 31, 2016.2017. Our revenues and net income for the three and nine months ended September 30, 2017March 31, 2018 were $191.4$202.7 million and $57.4 million, and $619.2 million and $92.8$57.5 million, respectively.
Growth in commercial air traffic is broadly correlated with world economic activity. In recent years, itcommercial air traffic growth has been expandingexpanded at a rate one and a half1.5 to two2 times that of global GDP growth. The expansion of air travel has driven a risean increase in the world aircraft fleet. There are currently approximately 20,00021,000 commercial mainline passenger and freighter aircraft in current operation worldwide. This fleet is expected to continue expanding at three to four percent average annual rate over the next twenty years. Aircraft leasing companies own approximately 41%42% of the world’s commercial jet aircraft.
Notwithstanding the sector’s long-term growth, the aviation markets havemarket has been, and areis expected to remain, subject to economic variability due to changes in macroeconomic variables, such as fuel price levels and foreign exchange rates. The aviation industry is also susceptible to external shocks, such as regional conflicts and terrorist events. Mitigating this risk is the portability of the assets, allowing aircraft to be redeployed to locations where demand is higher.
Air traffic data for the past several years has shown strong passenger market growth.  According to the International Air Transport Association, during the first eightthree months of 2017,2018, global passenger traffic increased 7.9%7.2% compared to the same period in 2016.2017. During the first eightthree months of 2017,2018, air cargo traffic increased 10.5%5.4% compared to the same period in 2016, and capacity increased 3.8%, resulting in an increase in load factors to 43.3%.2017.
Demand for air travel varies considerably by region. Emerging market economies have generally been experiencing greater increases in air traffic, driven by rising levels of per capita income. Air traffic growth is also being driven by the proliferation of low cost carriers, which have stimulated demand through lower prices. Mature markets, such as North America and Western Europe, are likely to grow more slowly in tandem with their economies. Persian Gulf-based Emirates, Qatar Airways and Etihad Airways are also showing signs of reaching maturity. Airlines operating in areas with political instability or weakening economies are under pressure, and their near-term outlook is more uncertain. On balance, we believe air travel will increase over time and, as a result, we expect demand for modern aircraft will continue to remain strong over the long-term.
Low fuelFuel prices and interest rates have had a substantial effect on our industry. The price of oil dropped by $67from $103 to $36 per barrel in the four years prior to December 2015. This allowed airlines to reduce ticket prices and stimulate aircraft traffic while retaining enough of this benefit to achieve record profit levels. A low interest rate environment and the strong overall performance of the aircraft financing sector attracted significant new capital, increasing competition for new investments. The downward trend in fuel prices and interest rates appears to have ended as fuel prices started rising in 2016. In 2017,2018, the price of fuel has averaged approximately $50$65 per barrel. Likewise, interest rates have started to rise in the U.S., with Federal Reserve guidance suggesting multiple future rate hikes subsequent to the December 2016 increase in the Federal Funds rate.rate in 2018.
Capital availability for aircraft has varied over time, and we consider this variability to be a basic characteristic of our business. If pursued properly, this represents an important source of opportunity. Both debt and equity markets have improved globally over the past several years with the recovery from the global financial crisis. Strong U.S. debt capital market conditions benefitedbenefit borrowers by permitting access to financing at historic lows while higher fees have driven down ECA demand. Recently, ECAexport credit agency availability has been curtailed, both in the U.S. and in Europe, due to political issues and an investigation into possible irregularities, respectively.issues. Commercial bank debt also continues to play a critical role for aircraft finance, although we believe regulatory pressures may limit its role over time.finance.
While financial marketsmarket conditions are currentlyremain attractive, heightened volatility stemming from global growth concerns and various geopolitical issues may increase capital costs and limit availability going forward. We believe these market forces should generate attractive newadditional investment and trading opportunities for which we are well placed to capitalize given our access to different financing sources, our limited capital commitments and our reputation as a reliable trading partner.

Over the longer term, our strategy is to achieve an investment grade credit rating, which we believe will reduce our borrowing costs and enable more reliable access to debt capital throughout the business cycle.
We believe our business approach is differentiated from those of other large leasing companies. Our investment strategy is to seek out the best risk-adjusted return opportunities across the commercial jet market, so our acquisition targets and

growth rates will vary with market conditions. We prefer to have capital resources available to capture investment opportunities that arise in the context of changing market circumstances. As such, we limit large, long-term capital commitments and are therefore much less reliant on orders for new aircraft from aircraft manufacturers as a source of new investments.investments than many of our competitors.
We plan to grow our business and profits over the long-term while maintaining a countercyclical orientation, a bias towards limiting long-dated capital commitments and maintaining a conservative and flexible capital structure. Our business strategy entails the following elements:
Pursuing a disciplined and differentiated investment strategy. In our view, values of different aircraft values change in different ways over time. We carefully evaluate investments across different aircraft models, ages, lessees and acquisition sources and re-evaluate these choices as market conditions and relative investment values change. We believe the financing flexibility offered through unsecured debt and our team’s experience with a wide range of asset types enables our value oriented strategy and provides us with a competitive advantage. We view orders from equipment manufacturers to be part of our investment opportunity set, but choose to limitkeep our long term capital commitments unless we believe there is an adequate return premium to compensate for risks and opportunity costs. This approach sets us apart from most other large aircraft leasing companies.limited.
Originating investments from many different sources across the globe. Our strategy is to seek out worthwhile investments by leveraging our team’s wide range of contacts around the world.contacts. We utilize a multi-channel approach to sourcing acquisitions and have purchased aircraft from a large number of airlines, lessors, original equipment manufacturers, lenders and other aircraft owners. Since our formation in 2004, we have acquired aircraft from 8689 different sellers.
Selling assets when attractive opportunities arise. We sell assets with the aim of realizing profits and reinvesting proceeds when a sale generates the greatest expected cash flow or when more accretive investments are available. We also use asset sales for portfolio management purposes, such as reducing lessee specific concentrations and lowering residual value exposures to certain aircraft types. Since our formation, we have sold 210 aircraft to 61 buyers.
Maintaining efficient access to capital from a wide set of sources while targeting an investment grade credit rating. We believe the aircraft investment market is influenced by the business cycle. Our strategy is to increase our purchase activity when prices are low and to emphasize asset sales when competition for assets is high. To implement this approach, we believe it is important to maintain access to a wide variety of financing sources. Our objective is to improve our corporate credit ratings to an investment grade level by maintaining strong portfolio and capital structure metrics while achieving a critical size through accretive growth. We believe improving our credit rating will not only reduce our borrowing costs, but also facilitate more reliable access to both securedunsecured and unsecuredsecured debt capital throughout the business cycle.
Leveraging our strategic relationships. We intend to capture the benefits provided through the extensive global contacts and relationships maintained by Marubeni, which is our biggest shareholder and one of the largest Japanese trading companies. Marubeni has already enabled greater access to Japanese-based financing and helped source and develop our joint venture with IBJLthe leasing arm of the Industrial Bank of Japan, Limited (“IBJ Air”IBJL”). IBJ Air is targeted at newer narrow-body aircraft leased to premier airlines, providing Aircastle with increased access to this market sector and to these customers. OurWe also have a joint venture with Teachers’ (“Lancaster”) provides us with an opportunity to pursue larger transactions, manage portfolio concentrations and improveOntario Teachers’ Pension Plan (“Teachers’”), our return on deployed capital.second largest shareholder.
Capturing the value of our efficient operating platform and strong operating track record. We believe our team’s capabilities in the global aircraft leasing market places us in a favorable position to source and manage new income-generating activities. We intend to continue to focus our efforts in areas where we believe we have competitive advantages, including new direct investments as well as ventures with strategic business partners.
Intending to pay quarterly dividends to our shareholders based on the Company’s sustainable earnings levels. Aircastle has paid dividends each quarter since our initial public offering in 2006. On August 4, 2017,February 9, 2018, our Board of Directors declared a regular quarterly dividend of $0.26$0.28 per common share, or an aggregate of $20.5$22.1 million for the three months ended September 30, 2017,March 31, 2018, which was paid on SeptemberMarch 15, 20172018 to holders of record on August 31, 2017.February 28, 2018. These dividends may not be indicative of the amount of any future dividends. Our ability to

pay quarterly dividends will depend upon many factors, including those as described in Item 1A. “Risk Factors” and elsewhere in our 20162017 Annual Report on Form 10-K.
Revenues
Our revenues are comprised primarily of operating lease rentals on flight equipment held for lease, revenue from retained maintenance payments related to lease expirations, lease termination payments, lease incentive amortization and interest recognized from finance and sales-type leases.

Typically, our aircraft are subject to net leases whereby the lessee pays lease rentals and is generally responsible for maintaining the aircraft and paying operational, maintenance and insurance costs arising during the term of the lease. Our aircraft lease agreements generally provide for the periodic payment of a fixed amount of rent over the life of the lease and the amount of the contracted rent will depend upon the type, age, specification and condition of the aircraft and market conditions at the time the lease is committed. The amount of rent we receive will depend on a number of factors, including the creditworthiness of our lessees and the occurrence of restructurings and defaults. Our lease rental revenues are also affected by the extent to which aircraft are off-lease and our ability to remarket aircraft that are nearing the end of their leases in order to minimize their off-lease time. Our success in re-leasing aircraft is affected by market conditions relating to our aircraft and by general industry conditions and trends. An increase in the percentage of off-lease aircraft or a reduction in lease rates upon remarketing would negatively impact our revenues.
Under an operating lease, the lessee will be responsible for performing maintenance on the relevant aircraft and will typically be required to make payments to us for heavy maintenance, overhaul or replacement of certain high-value components of the aircraft. These maintenance payments are based on hours or cycles of utilization or on calendar time, depending upon the component, and would be made either monthly in arrears or at the end of the lease term. For maintenance payments made monthly in arrears during a lease term, we will typically be required to reimburse all or a portion of these payments to the lessee upon their completion of the relevant heavy maintenance, overhaul or parts replacement. We record maintenance payments paid by the lessee during a lease as accrued maintenance liabilities in recognition of our obligation in the lease to refund such payments, and therefore we do not recognize maintenance revenue during the lease. Maintenance revenue recognition would occur at the end of a lease, when we are able to determine the amount, if any, by which reserve payments received exceed the amount we are required under the lease to reimburse to the lessee for heavy maintenance, overhaul or parts replacement. The amount of maintenance revenue we recognize in any reporting period is inherently volatile and is dependent upon a number of factors, including the timing of lease expiries, including scheduled and unscheduled expiries, the timing of maintenance events and the utilization of the aircraft by the lessee.
Many of our leases contain provisions which may require us to pay a portion of the lessee’s costs for heavy maintenance, overhaul or replacement of certain high-value components. We account for these expected payments as lease incentives, which are amortized as a reduction of revenue over the life of the lease. We estimate the amount of our portion for such costs, typically for the first major maintenance event for the airframe, engines, landing gear and auxiliary power units, expected to be paid to the lessee based on assumed utilization of the related aircraft by the lessee, the anticipated cost of the maintenance event and the estimated amounts the lessee is responsible to pay.
This estimated lease incentive is not recognized as a lease incentive liability at the inception of the lease. We recognize the lease incentive as a reduction of lease revenue on a straight-line basis over the life of the lease, with the offset being recorded as a lease incentive liability which is included in maintenance payments on the balance sheet. The payment to the lessee for the lease incentive liability is first recorded against the lease incentive liability and any excess above the lease incentive liability is recorded as a prepaid lease incentive asset which is included in other assets on the balance sheet and continues to amortize over the remaining life of the lease.

20172018 Lease Expirations and Lease Placements
At September 30, 2017,March 31, 2018, we had twoone aircraft accounting for less than 1% of our net book value that areis scheduled to come off lease during 2017 for which we have not yet secured lease or sales commitments.2018. We are marketing theseexpect to sell this aircraft for sale.in the third quarter of 2018.
2018-20212019-2022 Lease Expirations and Lease Placements
Taking into account lease and sale commitments, we currently have the following number of aircraft with lease expirations scheduled in the period 2018-2021,2019-2022, representing the percentage of our net book value of flight equipment

(including (including flight equipment held for lease and net investment in finance and sales-type leases) at September 30, 2017,March 31, 2018, specified below:
2018: 102019: 21 aircraft, representing 6%7%;
2019:2020: 27 aircraft, representing 9%;
2021: 32 aircraft, representing 16%; and
2022: 28 aircraft, representing 18%;
2020: 25 aircraft, representing 9%; and
2021: 23 aircraft, representing 12%10%.

Operating Expenses
Operating expenses are comprised of depreciation of flight equipment held for lease, interest expense, selling, general and administrative expenses, aircraft impairment charges and maintenance and other costs. Because our operating lease terms generally require the lessee to pay for operating, maintenance and insurance costs, our portion of maintenance and other costs relating to aircraft reflected in our statement of income primarily relates to expenses for unscheduled lease terminations.
Income Tax Provision
We obtained an assurance from the Minister of Finance of Bermuda under the Exempted Undertakings Tax Protection Act 1966 that, in the event any legislation is enacted in Bermuda imposing any tax computed on profits or income, or computed on any capital asset, gain or appreciation or any tax in the nature of estate duty or inheritance tax, such tax shall not, until March 2035, be applicable to us or to any of our operations or to our shares, debentures or other obligations except insofar as such tax applies to persons ordinarily resident in Bermuda or to any taxes payable by us in respect of real property owned or leased by us in Bermuda. Consequently, the provision for income taxes recorded relates to income earned by certain subsidiaries of the Company which are located in, or earn income in, jurisdictions that impose income taxes, primarily Ireland, Singapore and the United States.
All of our aircraft-owning subsidiaries that are recognized as corporations for U.S. tax purposes are non-U.S. corporations. These non-U.S. subsidiaries generally earn income from sources outside the United States and typically are not subject to U.S. federal, state or local income taxes, unless they operate within the U.S., in which case they may be subject to federal, state and local income taxes. The aircraft owning subsidiaries resident in Ireland Mauritius and SingaporeMauritius are subject to tax in those respective jurisdictions.
We have a U.S.-based subsidiary which provides management services to our non-U.S. subsidiaries and is subject to U.S. federal, state and local income taxes. We also have Ireland and Singapore based subsidiaries which provide management services to our non-U.S. subsidiaries and are subject to tax in those respective jurisdictions.
Acquisitions and Sales
During the first ninethree months of 2017,2018, we acquired 28four aircraft for $635.1 million. As of October 31, 2017, we have acquired 37 aircraft for approximately $760$110.9 million. At September 30, 2017,March 31, 2018, we had commitments to acquire 6437 additional aircraft for $1.80$1.48 billion, including the acquisition of 25 new E-Jet E2 aircraft from Embraer, which are scheduled to deliverwith delivery beginning in 2019 to 2021.2019. As of October 31, 2017,April 27, 2018, we have commitments to acquire 5539 aircraft for $1.68$1.53 billion.
During the first ninethree months of 2017,2018, we sold 29four aircraft for $765.0net proceeds of $43.9 million, which resulted in a net gain of $35.9$5.8 million. During October 2017,As of April 27, 2018, we sold one narrow-body aircraft and one classic narrow-bodytwo aircraft.

The following table sets forth certain information with respect to the aircraft owned by us as of September 30, 2017March 31, 2018:
AIRCASTLE AIRCRAFT INFORMATION (dollars in millions)
Owned Aircraft
As of
September 30, 
2017(1)
 
As of
September 30, 
2016(1)
As of
March 31, 
2018(1)
 
As of
March 31, 
2017(1)
Net Book Value of Flight Equipment$5,979
 $6,270
$6,677
 $6,596
Net Book Value of Unencumbered Flight Equipment$4,572
 $4,343
$5,304
 $4,725
Number of Aircraft192
 175
222
 200
Number of Unencumbered Aircraft163
 139
193
 163
Number of Lessees71
 65
81
 72
Number of Countries38
 35
44
 37
Weighted Average Age (years)(2)
8.7
 7.6
9.3
 8.2
Weighted Average Remaining Lease Term (years)(2)
4.7
 5.3
4.8
 4.8
Weighted Average Fleet Utilization during the three months ended September 30, 2017 and 2016(3)
100.0% 98.2%
Weighted Average Fleet Utilization during the nine months ended September 30, 2017 and 2016(3)
99.2% 98.9%
Portfolio Yield for the three months ended September 30, 2017 and 2016(4)
12.3% 12.4%
Portfolio Yield for the nine months ended September 30, 2017 and 2016(4)
12.3% 12.4%
Weighted Average Fleet Utilization during the three months ended March 31, 2018 and 2017(3)
99.4% 98.3%
Portfolio Yield for the three months ended March 31, 2018 and 2017(4)
11.5% 12.3%
      
Managed Aircraft on behalf of Joint Ventures      
Net Book Value of Flight Equipment$661
 $629
$634
 $682
Number of Aircraft13
 11
12
 13
 
        
(1)Calculated using net book value at period end.
(2)Weighted by net book value.
(3)Aircraft on-lease days as a percent of total days in period weighted by net book value.
(4)Lease rental revenue, interest income and cash collections on our net investment in finance and sales-type leases for the period as a percent of the average net book value for the period; quarterly information is annualized.
Our owned aircraft portfolio as of September 30, 2017March 31, 2018 is listed in Exhibit 99.1 to this report.


PORTFOLIO DIVERSIFICATION
 
Owned Aircraft as of
September 30, 2017
 Owned Aircraft as of
September 30, 2016
Owned Aircraft as of
March 31, 2018
 Owned Aircraft as of
March 31, 2017
Number of
Aircraft
 
% of Net
Book Value(1)
 Number of
Aircraft
 
% of Net
Book Value
(1)
Number of
Aircraft
 
% of Net
Book Value(1)
 Number of
Aircraft
 
% of Net
Book Value
(1)
Aircraft Type              
Passenger:              
Narrow-body159
 60% 134
 52%190
 66% 161
 56%
Wide-body28
 34% 32
 40%28
 29% 31
 36%
Total Passenger187
 94% 166
 92%218
 95% 192
 92%
Freighter5
 6% 9
 8%4
 5% 8
 8%
Total192
 100% 175
 100%222
 100% 200
 100%
              
Manufacturer              
Airbus108
 53% 87
 50%135
 56% 109
 52%
Boeing79
 45% 83
 48%82
 42% 84
 45%
Embraer5
 2% 5
 2%5
 2% 7
 3%
Total192
 100% 175
 100%222
 100% 200
 100%
              
Regional Diversification              
Asia and Pacific54
 31% 55
 39%62
 31% 64
 39%
Europe67
 28% 57
 22%88
 31% 67
 23%
Middle East and Africa13
 9% 14
 11%14
 8% 14
 10%
North America34
 11% 24
 8%30
 10% 27
 8%
South America24
 21% 23
 19%26
 19% 26
 19%
Off-lease
 % 2
(2) 
1%2
(2) 
1% 2
(3) 
1%
Total192
 100% 175
 100%222
 100% 200
 100%
 
        
(1)Calculated using net book value at period end.
(2)Consisted of one Airbus A321-200 aircraft and one Boeing 747-400ERF aircraft, both of which were delivered on lease to customers in the second quarter of 2018.
(3)Consisted of two Boeing 737-800Airbus A321-200 aircraft that were delivered on lease to a customer in China in October 2016.during the second quarter of 2017.


Our largest single customer represents over 6% of the net book value at September 30, 2017.March 31, 2018. Our top fifteen customers for aircraft we owned at September 30, 2017March 31, 2018, representing 87108 aircraft and 58%55% of the net book value, are as follows:
Percent of Net Book Value Customer Country 
Number of
Aircraft
Greater than 6% per customer Avianca Brazil Brazil 1011
       
3% to 6% per customer LATAM Chile 3
  Lion AirIndonesia10
TAP Portugal(1)
 Portugal 8
Lion AirIndonesia10
  South African Airways South Africa 4
  easyJetUnited Kingdom20
Aerolineas Argentina Argentina 5
 IberiaSpain11
Less than 3% per customer 
AirBridgeCargo(2)
 Russia 2
  IberiaUral SpainRussia 106
 Jet AirwaysIndia8
Less than 3% per customer Interjet Mexico 9
  AirAsia X Malaysia 2
  AviancaJet Airways ColombiaIndia 27
  Thai AirwaysIndiGo ThailandIndia 16
  easyJetAsiana Airlines United KingdomSouth Korea 10
Air CanadaCanada34
  Total top fifteen customers   87108
  All other customers   105114
  Total all customers   192222
 
        

(1)Combined with an affiliate.
(2)Guaranteed by Volga-Dnepr Airlines. We have one additional aircraft on lease with an affiliate.
Finance
We believe that cash on hand, payments received from lessees and other funds generated from operations, secured borrowings for aircraft, borrowings under our revolving credit facilities and other borrowings and proceeds from future aircraft sales will be sufficient to satisfy our liquidity and capital resource needs over the next twelve months. We may repay all or a portion of such borrowings from time to time with the net proceeds from subsequent long-term debt financings, additional equity offerings or cash generated from operations and asset sales. Therefore, our ability to execute our business strategy, particularly the acquisition of additional commercial jet aircraft or other aviation assets, depends to a significant degree on our ability to obtain additional debt and equity capital on terms we deem attractive.
See “Liquidity and Capital Resources” below.

RESULTS OF OPERATIONS
Comparison of the three months ended September 30, 2017 March 31, 2018 to the three months ended September 30, 2016: March 31, 2017:
Three Months Ended September 30,Three Months Ended March 31,
2017 20162018 2017
(Dollars in thousands)(Dollars in thousands)
Revenues:      
Lease rental revenue$171,687
 $181,975
$177,483
 $190,586
Finance and sales-type lease revenue6,412
 5,354
9,442
 4,073
Amortization of net lease discounts and lease incentives(2,388) (521)
Amortization of lease premiums, discounts and incentives(3,128) (3,112)
Maintenance revenue14,507
 6,829
11,991
 12,287
Total lease revenue190,218
 193,637
195,788
 203,834
Gain on sale of flight equipment5,768
 759
Other revenue1,193
 1,015
1,124
 439
Total revenues191,411
 194,652
202,680
 205,032
Operating expenses:      
Depreciation70,018
 76,201
75,002
 79,174
Interest, net60,636
 61,797
57,108
 63,068
Selling, general and administrative17,137
 15,985
17,835
 16,167
Impairment of aircraft
 10,462
Impairment of flight equipment
 500
Maintenance and other costs2,572
 1,834
988
 2,931
Total operating expenses150,363
 166,279
150,933
 161,840
Other income (expense):   
Gain (loss) on sale of flight equipment21,642
 (73)
Other(360) (210)
   
Total other income (expense)21,282
 (283)3,174
 (1,149)
   
Income from continuing operations before income taxes and earnings of unconsolidated
equity method investments
62,330
 28,090
54,921
 42,043
Income tax provision6,195
 2,458
Income tax (benefit) provision(844) 1,846
Earnings of unconsolidated equity method investments, net of tax1,296
 1,805
1,782
 2,242
Net income$57,431
 $27,437
$57,547
 $42,439
Revenues
Total revenuesdecreased by $3.2$2.4 million for the three months endedSeptember 30, 2017 March 31, 2018 as compared to the three months endedSeptember 30, 2016. March 31, 2017.
Lease rental revenue. The decrease in lease rental revenue of $10.3$13.1 million for the three months endedSeptember 30, 2017, March 31, 2018 as compared to the same period in 2016,2017 was primarily the result of decreases in revenue of:
a $32.8$32.5 million decrease due to the sale of 4035 aircraft since September 30, 2016;March 31, 2017; and
a $6.7$13.3 million decrease due to lease extensions, amendments, transitions and other changes.
This decrease wasThese decreases were partially offset by ana $32.7 million increase in revenue, reflecting the partial period impact of $29.2 millionthree aircraft purchased in 2018 and the full period impact due to the acquisition of 5047 aircraft since September 30, 2016.March 31, 2017.
Finance and sales-type lease revenue. For the three months endedSeptember 30, 2017, $6.4 March 31, 2018, $9.4 million of interest income from finance and sales-type leases was recognized as compared to $5.4$4.1 million of interest income from finance and sales-type leases recorded for the same period in 2016,2017 due to the net addition of fifteen aircraft, partially offset by the sale of twosixteen aircraft over the last twelve months.



Amortization of net lease premiums, discounts and lease incentives consisted of the following:incentives.
 Three Months Ended September 30,
 2017 2016
 (Dollars in thousands)
Amortization of lease incentives$(1,810) $42
Amortization of lease premiums(2,266) (2,894)
Amortization of lease discounts1,688
 2,331
Amortization of net lease discounts and lease incentives$(2,388) $(521)
As more fully described above under “Revenues,” lease incentives represent our estimated portion of the lessee’s cost for heavy maintenance, overhaul or replacement of certain high-value components, which are amortized over the life of the related lease. As we enter into new leases, the amortization of lease incentives generally increases and, conversely, if a related lease terminates, the related unused lease incentive liability will reduce the amortization of lease incentives. The increase in amortization of lease incentives of $1.9 million for the three months ended September 30, 2017, as compared to the same period in 2016, was primarily attributable to the reversal of lease incentives associated with one freighter aircraft due to changes in estimate and the reclassification of one aircraft from an operating lease to a finance lease.
 Three Months Ended March 31,
 2018 2017
 (Dollars in thousands)
Amortization of lease incentives$(2,682) $(2,707)
Amortization of lease premiums(2,439) (2,928)
Amortization of lease discounts1,993
 2,523
Amortization of lease premiums, discounts and incentives$(3,128) $(3,112)
Maintenance revenue. For the three months ended September 30, 2017,March 31, 2018, we recorded $14.5$12.0 million of maintenance revenue, primarily due to the transition of one narrow-body and one wide-body aircraft of $13.1 million.freighter aircraft. For the same period in 2016,2017, we recorded $6.8$12.3 million of maintenance revenue including $5.6due to the transition of two narrow-body aircraft and one wide-body aircraft for $10.3 million related toand maintenance reserves taken into income for threetwo freighter aircraft.aircraft and two narrow-body aircraft totaling $1.9 million.
Other revenue.Gain on sale of flight equipment Forincreased by $5.0 million to $5.8 million for the three months ended September 30, 2017, we recorded $1.2March 31, 2018, as compared to gains of $0.8 million of other revenue, primarily from fees earned from one lessee in connection with the early termination of a lease. Forfor the same period in 2016,2017. During the three months ended March 31, 2018, we recorded $1.0 millionsold four aircraft as compared to the sale of other revenue.one aircraft during the same period in 2017.
Operating expenses
Total operating expenses decreased by $15.9$10.9 million for the three months endedSeptember 30, 2017, March 31, 2018 as compared to the three months endedSeptember 30, 2016. March 31, 2017.
Depreciation expense decreased by $6.2$4.2 million for the three months endedSeptember 30, 2017 March 31, 2018 as compared to the same period in 2016.2017. The decrease is primarily the result of:
$16.4 million of lower depreciation of $18.8 million due to 40the effect of 35 aircraft sold.
This decrease was partially offset by increases of:
$11.0 million due to 50 aircraft acquired;sold; and
$1.61.4 million due to changes in asset lives, residual values and other changes.

This decrease was partially offset by an increase of $13.5 million due to the effect of 50 aircraft acquired.
Interest, net consisted of the following:
 Three Months Ended September 30,
 2017 2016
 (Dollars in thousands)
Interest on borrowings, net of settlements on interest rate derivatives, and other liabilities(1)
$54,527
 $57,589
Amortization of interest rate derivatives related to deferred losses569
 705
Amortization of deferred financing fees and debt discount(2)
6,735
 4,097
Interest expense61,831
 62,391
Less: Interest income(1,061) (546)
Less: Capitalized interest(134) (48)
Interest, net$60,636
 $61,797

(1) Includes $1.1 million of loan prepayment fees related to the sale of aircraft during the three months ended September 30, 2017.
(2) Includes $3.0 million in deferred financing fees written off related to the prepayment of debt in connection with the sale of aircraft during the three months ended September 30, 2017.
 Three Months Ended March 31,
 2018 2017
 (Dollars in thousands)
Interest on borrowings and other liabilities$53,978
 $58,839
Amortization of interest rate derivatives related to deferred losses301
 581
Amortization of deferred financing fees and debt discount3,532
 4,155
Interest expense57,811
 63,575
Less: Interest income(703) (414)
Less: Capitalized interest
 (93)
Interest, net$57,108
 $63,068
Interest, net decreased by $1.2$6.0 million overas compared to the three months ended September 30, 2016.March 31, 2017. The net decrease is primarily a result of lower interest on our borrowings of $3.1$4.9 million primarily due toas a result of lower weighted average debt outstanding, and higher interest income of $0.5 million, partially offset by higher amortization of deferred financing fees and debt discount of $2.6 million during the three months ended September 30, 2017 as compared to a year ago.outstanding.
Selling, general and administrative expenses for the three months endedSeptember 30, 2017 March 31, 2018 increased by $1.2$1.7 million over the same period in 2016.2017, as a result of higher personnel costs.
Impairment of Aircraft. See “Summary of ImpairmentsMaintenance and Recoverability Assessment” below for a detailed discussion of impairment charges related to certain aircraft.
Other income (expense)
Gain (loss) on sale of flight equipmentother costs increased by $21.7 million to $21.6were $1.0 million for the three months ended September 30, 2017, compared withMarch 31, 2018, a lossdecrease of $0.1$1.9 million forover the same period in 2016. During2017. The net decrease is primarily attributable to lower maintenance costs related to terminations and transitions for the third quarter of 2017, we sold fifteen aircraft. Duringthree months ended March 31, 2018 versus the third quarter of 2016, we recorded gains totaling $7.8 million and losses totaling $7.9 million, primarily due to a loss of $5.2same period in 2017.


Other income (expense)
Total other income (expense) increased by $4.3 million for a wide-body aircraft’s lease extension classifiedthe three months ended March 31, 2018 as a sales-type lease.compared to the three months ended March 31, 2017. The net increase in other income was primarily attributable to mark-to-market on our undesignated hedges.
Income tax (benefit) provision
Our provision for income taxestax (benefit) provision for the three months ended September 30, March 31, 2018 and 2017 was $(0.8) million and 2016 was $6.2$1.8 million, and $2.5 million, respectively. Income taxes have been provided based on the applicable tax laws and rates of those countries in which operations are conducted and income is earned, primarily Ireland Singapore and the United States. The increasedecrease in our income tax provision of approximately $3.7$2.7 million for the three months endedSeptember 30, 2017, March 31, 2018 as compared to the same period in 2016,2017 was primarily attributable to changes in operating income subject to tax in Ireland, Singapore, the United States and other jurisdictions.jurisdictions, including the recording of the discrete item of $2.8 million tax benefit related to the Singapore rate reduction from 10% to 8%.
All of our aircraft-owning subsidiaries that are recognized as corporations for U.S. tax purposes are non-U.S. corporations. These non-U.S. subsidiaries generally earn income from sources outside the United States and typically are not subject to U.S. federal, state or local income taxes unless they operate within the U.S., in which case they may be subject to federal, state and local income taxes. The aircraft owning subsidiaries resident in Ireland Mauritius and Singapore are subject to tax in those respective jurisdictions.
We have a U.S.-based subsidiary which provides management services to our non-U.S. subsidiaries and is subject to U.S. federal, state and local income taxes. In addition, we have Ireland and Singapore based subsidiaries which provide management services to our non-U.S. subsidiaries and are subject to tax in those respective jurisdictions.
The Company received an assurance from the Bermuda Minister of Finance that it would be exempted from local income, withholding and capital gains taxes until March 2035. Consequently, the provision for income taxes recorded relates to income earned by certain subsidiaries of the Company which are located in, or earn income in, jurisdictions that impose income taxes, primarily the United States and Ireland.
Other comprehensive income
Other comprehensive income consisted of the following:
 Three Months Ended September 30,
 2017 2016
 (Dollars in thousands)
Net income$57,431
 $27,437
Derivative loss reclassified into earnings569
 705
Total comprehensive income$58,000
 $28,142

Other comprehensive income increased by $29.9 million for the three months ended September 30, 2017, as a result of a $30.0 million increase in net income, partially offset by a decrease of $0.1 million in amortization of deferred net losses reclassified into earnings related to terminated interest rate derivatives.

RESULTS OF OPERATIONS
Comparison of the nine months ended September 30, 2017 to the nine months ended September 30, 2016:
 Nine Months Ended September 30,
 2017 2016
 (Dollars in thousands)
Revenues:   
Lease rental revenue$551,371
 $537,670
Finance and sales-type lease revenue16,363
 13,026
Amortization of lease premiums, discounts and incentives(8,780) (5,419)
Maintenance revenue55,738
 20,603
Total lease revenue614,692
 565,880
Other revenue4,526
 2,425
Total revenues619,218
 568,305
Operating expenses:   
Depreciation227,446
 227,918
Interest, net185,376
 188,490
Selling, general and administrative55,491
 46,883
Impairment of flight equipment80,430
 27,185
Maintenance and other costs7,846
 5,504
Total operating expenses556,589
 495,980
Other income (expense):   
Gain on sale of flight equipment35,926
 14,932
Other(3,069) (136)
Total other income32,857
 14,796
Income from continuing operations before income taxes and earnings of unconsolidated equity
method investments
95,486
 87,121
Income tax provision8,536
 8,782
Earnings of unconsolidated equity method investments, net of tax5,804
 5,390
Net income$92,754
 $83,729
Revenues
Total revenues increased by $50.9 million for the nine months ended September 30, 2017 as compared to the nine months ended September 30, 2016.
Lease rental revenue. The increase in lease rental revenue of $13.7 million for the nine months ended September 30, 2017 as compared to the same period in 2016 was primarily the result of increases in revenue of $102.1 million due to the acquisition of 64 aircraft since September 30, 2016. This increase was partially offset by decreases of:
$71.8 million due to the sale of 55 aircraft since September 30, 2016; and
$16.6 million due to lease extensions, amendments, transitions and other changes.
Finance and sales-type lease revenue. For the nine months ended September 30, 2017, $16.4 million of interest income from finance and sales-type leases was recognized as compared to $13.0 million of interest income from finance and sales-type leases recorded for the same period in 2016 due to the addition of fifteen aircraft, partially offset by the sale of two aircraft, over the last twelve months.



Amortization of net lease premiums, discounts and lease incentives.
 Nine Months Ended September 30,
 2017 2016
 (Dollars in thousands)
Amortization of lease incentives$(7,124) $(3,989)
Amortization of lease premiums(7,935) (8,571)
Amortization of lease discounts6,279
 7,141
Amortization of lease premiums, discounts and incentives$(8,780) $(5,419)
As more fully described above under “Revenues,” lease incentives represent our estimated portion of the lessee’s cost for heavy maintenance, overhaul or replacement of certain high-value components which is amortized over the life of the related lease. As we enter into new leases, the amortization of lease incentives generally increases and, conversely, if a related lease terminates, the related unused lease incentive liability will reduce the amortization of lease incentives. The increase in amortization of lease incentives of $3.1 million for the nine months ended September 30, 2017 as compared to the same period in 2016 was primarily attributable to the reversal of lease incentives associated with two freighter aircraft due to changes in estimate and the reclassification of one aircraft from an operating lease to a finance lease.
Maintenance revenue. For the nine months ended September 30, 2017, we recorded $55.7 million of maintenance revenue primarily due to the transition of four narrow-body, four wide-body and one freighter aircraft for $50.6 million. For the same period in 2016, we recorded $20.6 million of maintenance revenue from one scheduled lease termination for $6.9 million and maintenance reserves taken into income for three freighter aircraft and one wide-body aircraft totaling $13.2 million.
Other revenue. For the nine months ended September 30, 2017, we recorded $4.5 million of other revenue, primarily from fees earned from two lessees in connection with the early terminations of two leases. For the same period in 2016, we recorded $2.4 million of other revenue.
Operating expenses
Total operating expenses increased by $60.6 million for the nine months ended September 30, 2017 as compared to the nine months ended September 30, 2016.
Depreciation expense decreased by $0.5 million for the nine months ended September 30, 2017 as compared to the same period in 2016. The decrease is primarily the result of lower depreciation of $44.0 million due to 55 aircraft sold.
This decrease was partially offset by increases of:
$40.2 million due to 64 aircraft acquisitions, and;
$3.3 million due to changes in asset lives, residual values and other changes.

Interest, net consisted of the following:
 Nine Months Ended September 30,
 2017 2016
 (Dollars in thousands)
Interest on borrowings and other liabilities(1)
$170,225
 $166,692
Amortization of interest rate derivatives related to deferred losses1,725
 9,074
Amortization of deferred financing fees and debt discount(2)
15,860
 13,567
Interest expense187,810
 189,333
Less: Interest income(2,089) (768)
Less: Capitalized interest(345) (75)
Interest, net$185,376
 $188,490

(1)Includes $2.1 million and $1.5 million of loan prepayment fees related to the sale of aircraft during the nine months ended September 30, 2017 and 2016, respectively.
(2)Includes $4.0 million and $2.0 million in deferred financing fees written off related to the prepayment of debt in connection with the sale of aircraft during the nine months ended September 30, 2017 and 2016, respectively.
Interest, net decreased by $3.1 million as compared to the nine months ended September 30, 2016. The net decrease is primarily a result of lower amortization of deferred losses on terminated interest rate derivatives of $7.3 million and higher interest income of $1.3 million, partially offset by higher interest on borrowings of $3.5 million, primarily due to higher weighted average debt outstanding during the nine months ended September 30, 2017 and higher amortization of deferred financing fees and debt discount of $2.3 million as compared to a year ago.
Selling, general and administrative expenses for the nine months ended September 30, 2017 increased $8.6 million over the same period in 2016, primarily as a result of $5.1 million of separation and disability compensation expense related to our former Chief Executive Officer under the terms of his employment and share-based award agreements.
Impairment of Aircraft. See “Summary of Impairments and Recoverability Assessment” below for a detailed discussion of impairment charges related to certain aircraft.
Maintenance and other costs were $7.8 million for the nine months ended September 30, 2017, an increase of $2.3 million over the same period in 2016. The net increase is primarily related to higher maintenance costs of $2.2 million related to terminations and transitions for the nine months ended September 30, 2017 versus the same period in 2016.
Other income (expense)
Gain on sale of flight equipment increased by $21.0 million to $35.9 million for the nine months ended September 30, 2017, as compared to gains of $14.9 million for the same period in 2016. During the nine months ended September 30, 2017, we sold 29 aircraft. During the nine months ended September 30, 2016, we recorded gains totaling $26.7 million that were offset by losses totaling $11.8 million, including a loss of $5.2 million for a wide-body aircraft’s lease extension classified as a sales-type lease.
Income tax provision
Our provision for income taxes for the nine months ended September 30, 2017 and 2016 was $8.5 million and $8.8 million, respectively. Income taxes have been provided based on the applicable tax laws and rates of those countries in which operations are conducted and income is earned, primarily Ireland, Singapore and the United States. The decrease in our income tax provision of approximately $0.2 million for the nine months ended September 30, 2017 as compared to the same period in 2016 was primarily attributable to changes in operating income subject to tax in Ireland, Singapore, the United States and other jurisdictions.
All of our aircraft-owning subsidiaries that are recognized as corporations for U.S. tax purposes are non-U.S. corporations. These non-U.S. subsidiaries generally earn income from sources outside the United States and typically are not subject to U.S. federal, state or local income taxes unless they operate within the U.S., in which case they may be subject to federal, state and local income taxes. The aircraft owning subsidiaries resident in Ireland, Mauritius and Singapore are subject to tax in those respective jurisdictions.
We have a U.S. based subsidiary which provides management services to our non-U.S. subsidiaries and is subject to U.S. federal, state and local income taxes. We also have Ireland and Singapore based subsidiaries which provide management services to our non-U.S. subsidiaries and are subject to tax in those respective jurisdictions.
The Company received an assurance from the Bermuda Minister of Finance that it would be exempted from local income, withholding and capital gains taxes until March 2035. Consequently, the provision for income taxes recorded relates to income earned by certain subsidiaries of the Company which are located in, or earn income in, jurisdictions that impose income taxes, primarily the United States and Ireland.

Other comprehensive income
Nine Months Ended September 30,Three Months Ended March 31,
2017 20162018 2017
(Dollars in thousands)(Dollars in thousands)
Net income$92,754
 $83,729
$57,547
 $42,439
Net change in fair value of derivatives, net of tax expense of $0 for both periods presented
 (1)
Derivative loss reclassified into earnings1,725
 9,074
301
 581
Total comprehensive income$94,479
 $92,802
$57,848
 $43,020
Other comprehensive income increased by $1.7$14.8 million for the ninethree months ended September 30, 2017,March 31, 2018, as a result of a $9.0$15.1 million increase in net income, partially offset by a decrease of $7.3$0.3 million in amortization of deferred net losses reclassified into earnings related to terminated interest rate derivatives.
Summary of Recoverability Assessment and Other Impairments
Transactional Impairments
During the second quarter of 2017, we entered into agreements to sell two Boeing 747-400 production freighter aircraft at the end of their respective leases and one older Boeing 747-400 converted freighter aircraft to its lessee, resulting in impairment charges totaling $79.2 million, partially offset by maintenance revenue of $13.5 million. During the third quarter of 2017, we sold one production freighter and one converted freighter aircraft. We expect to sell one production freighter aircraft in the first quarter of 2018.
Annual Recoverability Assessment
We completed our annual recoverability assessment of our aircraft in the second quarter this year. We also performed aircraft-specific analyses where there were changes in circumstances, such as approaching lease expirations. Other than the transactional impairments discussed above, no other impairments were recorded as a result of our annual recoverability assessment.
The recoverability assessment is a comparison of the carrying value of each aircraft to its undiscounted expected future cash flows. We develop the assumptions used in the recoverability assessment, including those relating to current and future demand for each aircraft type, based on management’s experience in the aircraft leasing industry, as well as information received from third-party sources. Estimates of the undiscounted cash flows for each aircraft type are impacted by changes in contracted and future expected lease rates, residual values, expected scrap values, economic conditions and other factors.
Management believes that the net book value of each aircraft is currently supported by the estimated future undiscounted cash flows expected to be generated by that aircraft, and accordingly, no aircraft were impaired as a consequence of our annual recoverability assessment. However, if our estimates or assumptions change, we may revise our cash flow assumptions and record future impairment charges. While we believe that the estimates and related assumptions used in the annual recoverability assessment are appropriate, actual results could differ from those estimates.
Aircraft Monitoring List
At September 30, 2017, we considered one Boeing 747-400 production freighter model and five Airbus A330 passengerMarch 31, 2018, no aircraft with a total net book value of $407.3 million, or 6.8%, to bewere on our monitoring list. We monitor our fleet for aircraft that are more susceptible to failing our recoverability assessments within one year due to their sensitivity to changes in contractual cash flows, future cash flow estimates and aircraft residual or scrap values.

RECENTLY ADOPTED ACCOUNTING PRONOUNCEMENTS
See Note 1 - “Summary of Significant Accounting Policies – Organization and Basis of Presentation” in the Notes to Unaudited Consolidated Financial Statements above.
RECENTLY UNADOPTED ACCOUNTING PRONOUNCEMENTS
See Note 1 - “Summary of Significant Accounting Policies – Recent Accounting Pronouncements” in the Notes to Unaudited Consolidated Financial Statements above.

LIQUIDITY AND CAPITAL RESOURCES
Our business is very capital intensive, requiring significant investments in order to expand our fleet and to maintain and improve our existing portfolio. Our operations generate a significant amount of cash, primarily from lease rentals and maintenance collections. We have also met our liquidity and capital resource needs by utilizing several sources over time, including:
various forms of borrowing secured by our aircraft, including bank term facilities, limited recourse securitization financings, and ECA-backed financings for new aircraft acquisitions;
unsecured indebtedness, including our current unsecured revolving credit facilities, term loan and senior notes;
asset sales; and
sales of common shares.
Going forward, we expect to continue to seek liquidity from these sources and other sources, subject to pricing and conditions we consider satisfactory.
During the first ninethree months of 2017,2018, we met our liquidity and capital resource needs with $393.5$142.4 million of cash flow from operations $500.0 million in gross proceeds from the issuance of our Senior Notes due 2024 and $765.0$43.9 million of cash from aircraft sales.
As of September 30, 2017,March 31, 2018, the weighted-average maturity of our secured and unsecured debt financings was 3.93.4 years and we are in compliance with all applicable covenants.
We believe that cash on hand, payments received from lessees and other funds generated from operations, secured borrowings for aircraft, borrowings under our revolving credit facilities and other borrowings and proceeds from future aircraft sales will be sufficient to satisfy our liquidity and capital resource needs over the next twelve months. Our liquidity and capital resource needs include payments due under our aircraft purchase obligations, required principal and interest payments under our long-term debt facilities, expected capital expenditures, lessee maintenance payment reimbursements and lease incentive payments over the next twelve months.

Cash Flows
Nine Months Ended September 30,Three Months Ended March 31,
2017 20162018 2017
(Dollars in thousands)(Dollars in thousands)
Net cash flow provided by operating activities$393,458
 $367,413
$142,412
 $131,576
Net cash flow provided by (used in) investing activities173,821
 (395,533)
Net cash flow used in investing activities(44,119) (157,252)
Net cash flow (used in) provided by financing activities(392,911) 484,326
(99,811) 439,471
Operating Activities:
Cash flow provided by operations was $393.5142.4 million and $367.4131.6 million for the ninethree months ended September 30,March 31, 2018 and 2017, and 2016, respectively. The increase in cash flow provided by operations of approximately $26.0$10.8 million for the ninethree months ended September 30, 2017March 31, 2018 versus the same period in 20162017 was primarily a result of a $9.4 million increase in cash received from maintenance revenue and a $3.4 million net increase in cash from lease rentals and finance and sales-type leases. These inflows were offset by a $3.0 million increase in cash paid for taxes.
Investing Activities:
Cash flow used in investing activities was $44.1 million and $157.3 million for the three months ended March 31, 2018 and 2017, respectively. The decrease in cash flow used in investing activities of $113.1 million for the three months endedMarch 31, 2018 versus the same period in 2017 was primarily a result of:
a $30.7 million increase in cash received from maintenance revenue;
a $12.0 million increase in cash from lease rentals, net of finance and sales-type leases; and
a $9.3 million decrease in cash paid for taxes.
These inflows were offset by a $10.9 million decrease in cash from working capital and a $14.8 million increase in cash paid for interest.
Investing Activities:
Cash flow provided by investing activities was $173.8 million for the nine months ended September 30, 2017 as compared to cash flow used in investing activities of $395.5 million for the nine months endedSeptember 30, 2016. The net increase in cash flow provided by investing activities of $569.4 million for the nine months endedSeptember 30, 2017 versus the same period in 2016 was primarily a result of:
a $280.1an $80.0 million net decrease in the acquisition and improvement of flight equipment and net investments in finance and sales-type leases;
a $276.2$27.1 million increase in proceeds from the sale of flight equipment; and
a $12.7$4.8 million decreaseincrease in unconsolidated equity method investments.aircraft purchase deposits and progress payments, net of returned deposits.
Financing Activities:
Cash flow used in financing activities was $392.9$99.8 million for the ninethree months ended September 30, 2017March 31, 2018 as compared to cash flow provided by financing activities of $484.3$439.5 million for the ninethree months ended September 30, 2016.March 31, 2017. The net increase in cash flow used in financing activities of $877.2$539.3 million for the ninethree months ended September 30, 2017March 31, 2018 versus the same period in 20162017 was primarily a result of:
a $499.4$500.0 million decrease in proceeds from secured and unsecured financings;
a $363.3$70.5 million increase in securitization and term debt financing repayments; and
a $52.4$6.9 million increase in shares repurchased.
These outflows were offset by a $31.7 million decrease in maintenance and security deposits returned, net of deposits received.
These outflows were partially offset by a $31.7 million decrease in shares repurchasedreceived and an $8.7$8.0 million decrease in deferred financing costs.

Debt Obligations
For complete information on our debt obligations, please refer to Note 7 - “Secured and Unsecured Debt Financings” in the Notes to Unaudited Consolidated Financial Statements above.
Contractual Obligations
Our contractual obligations consist of principal and interest payments on debt, payments on interest rate derivatives, other aircraft acquisition agreements and rent payments related to our office leases. Total contractual obligations increaseddecreased to $6.86$6.50 billion at September 30, 2017March 31, 2018 from $6.50$6.61 billion at December 31, 20162017, due primarily to debt amortization, partially offset by an increase in aircraft purchase obligations for aircraft to be acquired, partially offset by the amortization of our other financings.obligations.
The following table presents our actual contractual obligations and their payment due dates as of September 30, 2017March 31, 2018:
Payments Due by Period as of September 30, 2017Payments Due by Period as of March 31, 2018
Contractual ObligationsTotal 
1 year
or less
 2-3 years 4-5 years 
More than
5 years
Total 
1 year
or less
 2-3 years 4-5 years 
More than
5 years
(Dollars in thousands)(Dollars in thousands)
Principal payments:
        
        
Senior Notes due 2018 - 2024$3,200,000
 $
 $1,200,000
 $1,000,000
 $1,000,000
$3,200,000
 $400,000
 $1,300,000
 $500,000
 $1,000,000
Unsecured Term Loan120,000
 
 120,000
 
 
120,000
 
 120,000
 
 
Revolving Credit Facilities
 
 
 
 
100,000
 
 100,000
 
 
ECA Financings236,879
 38,071
 80,321
 80,475
 38,012
218,006
 38,752
 81,760
 78,068
 19,426
Bank Financings652,138
 76,123
 134,734
 125,244
 316,037
618,203
 81,575
 124,127
 120,412
 292,089
Total principal payments4,209,017
 114,194
 1,535,055
 1,205,719
 1,354,049
4,256,209
 520,327
 1,725,887
 698,480
 1,311,515
                  
Interest payments on debt obligations(1)
827,298
 211,809
 356,308
 178,026
 81,155
745,252
 215,959
 321,799
 153,481
 54,013
Office leases(2)
21,335
 1,259
 4,971
 4,901
 10,204
18,522
 2,066
 3,912
 3,358
 9,186
Purchase obligations(3)
1,803,810
 896,818
 765,349
 141,643
 
1,475,400
 508,277
 967,123
 
 
Total$6,861,460
 $1,224,080
 $2,661,683
 $1,530,289
 $1,445,408
$6,495,383
 $1,246,629
 $3,018,721
 $855,319
 $1,374,714
 
        
(1)Future interest payments on variable rate, LIBOR-based debt obligations are estimated using the interest rate in effect at September 30, 2017.March 31, 2018.
(2)Represents contractual payment obligations for our office leases in Stamford, Connecticut; Dublin, Ireland and Singapore.
(3)At September 30, 2017,March 31, 2018, we had commitments to acquire 6437 aircraft for $1.80$1.48 billion, including 25 new E-Jet E2 aircraft from Embraer S.A. These amounts include estimates for pre-delivery deposits, contractual price escalation and other adjustments. As of October 31, 2017,April 27, 2018, we have commitments to acquire 5539 aircraft for $1.68$1.53 billion.
Capital Expenditures
From time to time, we make capital expenditures to maintain or improve our aircraft. These expenditures include the cost of major overhauls necessary to place an aircraft in service and modifications made at the request of lessees. For the ninethree months ended September 30,March 31, 2018 and 2017, and 2016, we incurred a total of $24.4$1.6 million and $27.0$10.8 million, respectively, of capital expenditures (including lease incentives) related to the acquisition and improvement of aircraft.
As of September 30, 2017,March 31, 2018, the weighted average age by net book value of our aircraft was approximately 8.79.3 years. In general, the costs of operating an aircraft, including maintenance expenditures, increase with the age of the aircraft. Our lease agreements call for the lessee to be primarily responsible for maintaining the aircraft. We may incur additional maintenance and modification costs in the future in the event we are required to remarket an aircraft or a lessee fails to meet its maintenance obligations under the lease agreement. These maintenance reserves are paid by the lessee to provide for future maintenance events. Provided a lessee performs scheduled maintenance of the aircraft, we are required to reimburse the lessee for scheduled maintenance payments. In certain cases, we are also required to make lessor contributions, in excess of amounts a lessee may have paid, towards the costs of maintenance events performed by or on behalf of the lessee.
Actual maintenance payments to us by lessees in the future may be less than projected as a result of a number of factors, including defaults by the lessees. Maintenance reserves may not cover the entire amount of actual maintenance expenses

incurred and, where these expenses are not otherwise covered by the lessees, there can be no assurance that our operational cash flow and maintenance reserves will be sufficient to fund maintenance requirements, particularly as our aircraft age. See Item 1A. “Risk Factors - Risks Related to Our Business - Risks related to our leases - If lessees are unable to fund their maintenance obligations on our aircraft, we may incur increased costs at the conclusion of the applicable lease” in our 20162017 Annual Report on Form 10-K.
Off-Balance Sheet Arrangements
We entered into two joint venture arrangements in order to help expand our base of new business opportunities. None of these joint ventures qualifies for consolidated accounting treatment. The assets and liabilities of these entities are not included in our Consolidated Balance Sheets and we record our net investment under the equity method of accounting. See Note 5 - “Unconsolidated Equity Method Investments” in the Notes to Unaudited Consolidated Financial Statements above.
We hold a 30% equity interest in our Lancaster joint venture and a 25% equity interest in our IBJ Air joint venture. At September 30, 2017,March 31, 2018, the net book value of our two joint ventures’ thirteentwelve aircraft was approximately $661$634 million.
Foreign Currency Risk and Foreign Operations
At September 30, 2017March 31, 2018, all of our leases are payable to us in U.S. dollars. However, we incur Euro and Singapore dollar-denominated expenses in connection with our subsidiaries in Ireland and Singapore. For the ninethree months ended September 30, 2017March 31, 2018, expenses, such as payroll and office costs, denominated in currencies other than the U.S. dollar aggregated approximately $14.2$4.4 million in U.S. dollar equivalents and represented approximately 26%25% of total selling, general and administrative expenses. Our international operations are a significant component of our business strategy and permit us to more effectively source new aircraft, service the aircraft we own and maintain contact with our lessees. Therefore, our international operations and our exposure to foreign currency risk will likely increase over time. Although we have not yet entered into foreign currency hedges because our exposure to date has not been significant, if our foreign currency exposure increases, we may enter into hedging transactions in the future to mitigate this risk. For the ninethree months ended September 30,March 31, 2018 and 2017, and 2016, we incurred insignificant net gains and losses on foreign currency transactions.
Hedging
For complete information on our derivative instruments, please refer to Note 16 - “Accumulated Other Comprehensive Loss” in the Notes to Unaudited Consolidated Financial Statements above.
Management’s Use of EBITDA and Adjusted EBITDA
We define EBITDA as income (loss) from continuing operations before income taxes, interest expense, and depreciation and amortization. We use EBITDA to assess our consolidated financial and operating performance, and we believe this non-U.S. GAAP measure is helpful in identifying trends in our performance.
This measure provides an assessment of controllable expenses and affords management the ability to make decisions which are expected to facilitate meeting current financial goals, as well as achieving optimal financial performance. It provides an indicator for management to determine if adjustments to current spending decisions are needed.
EBITDA provides us with a measure of operating performance because it assists us in comparing our operating performance on a consistent basis as it removes the impact of our capital structure (primarily interest charges on our outstanding debt) and asset base (primarily depreciation and amortization) from our operating results. Accordingly, this metric measures our financial performance based on operational factors that management can impact in the short-term, namely the cost structure, or expenses, of the organization. EBITDA is one of the metrics used by senior management and the Board of Directors to review the consolidated financial performance of our business.
We define Adjusted EBITDA as EBITDA (as defined above) further adjusted to give effect to adjustments required in calculating covenant ratios and compliance as that term is defined in the indenture governing our senior unsecured notes. Adjusted EBITDA is a material component of these covenants.





The table below shows the reconciliation of net income to EBITDA and Adjusted EBITDA for the three and nine months ended September 30, 2017March 31, 2018 and 2016:2017:
Three Months Ended September 30, Nine Months Ended September 30,Three Months Ended March 31,
2017 2016 2017 20162018 2017
(Dollars in thousands)(Dollars in thousands)
Net income$57,431
 $27,437
 $92,754
 $83,729
$57,547
 $42,439
Depreciation70,018
 76,201
 227,446
 227,918
75,002
 79,174
Amortization of lease premiums, discounts and incentives2,388
 521
 8,780
 5,419
3,128
 3,112
Interest, net60,636
 61,797
 185,376
 188,490
57,108
 63,068
Income tax provision6,195
 2,458
 8,536
 8,782
Income tax (benefit) provision(844) 1,846
EBITDA196,668
 168,414
 522,892
 514,338
191,941
 189,639
Adjustments:          
Impairment of flight equipment
 10,462
 80,430
 27,185

 500
Non-cash share-based payment expense2,506
 2,059
 10,636
 5,796
2,378
 2,102
Loss on mark-to-market of interest rate derivative contracts361
 210
 3,073
 141
(Gain) loss on mark-to-market of interest rate derivative contracts(3,174) 1,150
Adjusted EBITDA$199,535
 $181,145
 $617,031
 $547,460
$191,145
 $193,391
Management’s Use of Adjusted Net Income (“ANI”)
Management believes that ANI, when viewed in conjunction with the Company’s results under U.S. GAAP and the below reconciliation, provides useful information about operating and period-over-period performance and additional information that is useful for evaluating the underlying operating performance of our business without regard to periodic reporting elements related to interest rate derivative accounting, changes related to refinancing activity and non-cash share-based payment expense.
The table below shows the reconciliation of net income to ANI for the three and nine months ended September 30, 2017March 31, 2018 and 2016:2017:
 Three Months Ended September 30, Nine Months Ended September 30,
 2017 2016 2017 2016
 (Dollars in thousands)
Net income$57,431
 $27,437
 $92,754
 $83,729
Loan termination fee(1)
1,070
 
 2,058
 1,509
Loss on mark-to-market of interest rate derivative contracts(2)
361
 210
 3,073
 141
Write-off of deferred financing fees(1)
3,019
 
 4,005
 1,972
         Non-cash share-based payment expense(3)
2,506
 2,059
 10,636
 5,796
         Hedge loss amortization charges (1)

 
 
 4,855
Adjusted net income$64,387
 $29,706
 $112,526
 $98,002
 Three Months Ended March 31,
 2018 2017
 (Dollars in thousands)
Net income$57,547
 $42,439
(Gain) loss on mark-to-market of interest rate derivative contracts(1)
(3,174) 1,150
         Non-cash share-based payment expense(2)
2,378
 2,102
Adjusted net income$56,751
 $45,691
 
        
(1) Included in Interest, net.
(2) Included in Other income (expense).
(3)(2) Included in Selling, general and administrative expenses.
Three Months Ended September 30, Nine Months Ended September 30,Three Months Ended March 31,
Weighted-average shares:2017 2016 2017 20162018 2017
Common shares outstanding78,237,199
 77,989,933
 78,197,091
 78,230,011
78,366,588
 78,176,705
Restricted common shares569,617
 680,249
 569,453
 646,299
431,161
 503,802
Total weighted-average shares78,806,816
 78,670,182
 78,766,544
 78,876,310
78,797,749
 78,680,507
 Three Months Ended March 31,
Percentage of weighted-average shares:2018 2017
Common shares outstanding99.45% 99.36%
Restricted common shares(1)
0.55% 0.64%
Total percentage of weighted-average shares100.00% 100.00%

 Three Months Ended September 30,��Nine Months Ended September 30,
Percentage of weighted-average shares:2017 2016 2017 2016
Common shares outstanding99.28% 99.14% 99.28% 99.18%
Restricted common shares(1)
0.72% 0.86% 0.72% 0.82%
Total percentage of weighted-average shares100.00% 100.00% 100.00% 100.00%
 Three Months Ended March 31,
 2018 2017
Weighted-average common shares outstanding – Basic78,366,588
 78,176,705
Effect of dilutive shares(2)
228,019
 194,848
Weighted average common shares outstanding – Diluted78,594,607
 78,371,553
 Three Months Ended September 30, Nine Months Ended September 30,
 2017 2016 2017 2016
Weighted-average common shares outstanding – Basic78,237,199
 77,989,933
 78,197,091
 78,230,011
Effect of dilutive shares(2)
137,810
 32,235
 169,053
 35,804
Weighted average common shares outstanding – Diluted78,375,009
 78,022,168
 78,366,144
 78,265,815
Three Months Ended September 30, Nine Months Ended September 30,Three Months Ended March 31,
2017 2016 2017 20162018 2017
(Dollars in thousands, except per share amounts)(Dollars in thousands, except per share amounts)
Adjusted net income allocation:          
Adjusted net income$64,387
 $29,706
 $112,526
 $98,002
$56,751
 $45,691
Less: Distributed and undistributed earnings allocated to restricted common shares(2)
(465) (257) (814) (803)(311) (293)
Adjusted net income allocable to common shares – Basic and Diluted$63,922
 $29,449
 $111,712
 $97,199
$56,440
 $45,398
          
Adjusted net income per common share – Basic and Diluted$0.82
 $0.38
 $1.43
 $1.24
$0.72
 $0.58
        
(1)For the three months ended September 30,March 31, 2018 and 2017, and 2016, distributed and undistributed earnings to restricted shares were 0.72%0.55% and 0.86%, respectively, of net income. For the nine months ended September 30, 2017 and 2016, distributed and undistributed earnings to restricted shares were 0.72% and 0.82%0.64%, respectively, of net income. The amount of restricted share forfeitures for allboth periods present is immaterial to the allocation of distributed and undistributed earnings.
(2)For allboth periods presented, dilutive shares represented contingently issuable shares.
Limitations of EBITDA, Adjusted EBITDA and ANI
An investor or potential investor may find EBITDA, Adjusted EBITDA and ANI important measures in evaluating our performance, results of operations and financial position. We use these non-U.S. GAAP measures to supplement our U.S. GAAP results in order to provide a more complete understanding of the factors and trends affecting our business.
EBITDA, Adjusted EBITDA and ANI have limitations as analytical tools and should not be viewed in isolation or as substitutes for U.S. GAAP measures of earnings (loss). Material limitations in making the adjustments to our earnings (loss) to calculate EBITDA, Adjusted EBITDA and ANI, and using these non-U.S. GAAP measures as compared to U.S. GAAP net income (loss), income (loss) from continuing operations and cash flows provided by or used in operations, include:
depreciation and amortization, though not directly affecting our current cash position, represent the wear and tear and/or reduction in value of our aircraft, which affects the aircraft’s availability for use and may be indicative of future needs for capital expenditures;
the cash portion of income tax (benefit) provision generally represents charges (gains), which may significantly affect our financial results;
elements of our interest rate derivative accounting may be used to evaluate the effectiveness of our hedging policy;
hedge loss amortization charges; and
adjustments required in calculating covenant ratios and compliance as that term is defined in the indenture governing our senior unsecured notes.

EBITDA, Adjusted EBITDA and ANI are not alternatives to net income (loss), income (loss) from operations or cash flows provided by or used in operations as calculated and presented in accordance with U.S. GAAP. You should not rely on these non-U.S. GAAP measures as a substitute for any such U.S. GAAP financial measure. We strongly urge you to review the reconciliations to U.S. GAAP net income (loss), along with our consolidated financial statements included elsewhere in this report. We also strongly urge you to not rely on any single financial measure to evaluate our business. In addition, because EBITDA, Adjusted EBITDA and ANI are not measures of financial performance under U.S. GAAP and are susceptible to varying calculations, EBITDA, Adjusted EBITDA and ANI as presented in this report, may differ from and may not be comparable to similarly titled measures used by other companies.


ITEM 3. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK
Interest rate risk is the exposure to loss resulting from changes in the level of interest rates and the spread between different interest rates. These risks are highly sensitive to many factors, including U.S. monetary and tax policies, U.S. and international economic factors and other factors beyond our control. We are exposed to changes in the level of interest rates and to changes in the relationship or spread between interest rates. Our primary interest rate exposures relate to our lease agreements, floating rate debt obligations and interest rate derivatives. Rent payments under our aircraft lease agreements typically do not vary during the term of the lease according to changes in interest rates. However, our borrowing agreements generally require payments based on a variable interest rate index, such as LIBOR. Therefore, to the extent our borrowing costs are not fixed, increases in interest rates may reduce our net income by increasing the cost of our debt without any corresponding increase in rents or cash flow from our securities.
Changes in interest rates may also impact our net book value as our interest rate derivatives are periodically marked-to-market through shareholders’ equity. Generally, we are exposed to loss on our fixed pay interest rate derivatives to the extent interest rates decrease below their contractual fixed rate.
The relationship between spreads on derivative instruments may vary from time to time, resulting in a net aggregate book value increase or decrease. Changes in the general level of interest rates can also affect our ability to acquire new investments and our ability to realize gains from the settlement of such assets.
Sensitivity Analysis
The following discussion about the potential effects of changes in interest rates is based on a sensitivity analysis, which models the effects of hypothetical interest rate shifts on our financial condition and results of operations. Although we believe a sensitivity analysis provides the most meaningful analysis permitted by the rules and regulations of the SEC, it is constrained by several factors, including the necessity to conduct the analysis based on a single point in time and by the inability to include the extraordinarily complex market reactions that normally would arise from the market shifts modeled. Although the following results of a sensitivity analysis for changes in interest rates may have some limited use as a benchmark, they should not be viewed as a forecast. This forward-looking disclosure also is selective in nature and addresses only the potential interest expense impacts on our financial instruments and, in particular, does not address the mark-to-market impact on our interest rate derivatives. It also does not include a variety of other potential factors that could affect our business as a result of changes in interest rates.
A hypothetical 100-basis point increase/decrease in our variable interest rates would increase/decrease the minimum contracted rentals on our portfolio as of September 30, 2017March 31, 2018 by $2.3$3.8 million and $2.3$3.8 million, respectively, over the next twelve months. As of September 30, 2017,March 31, 2018, a hypothetical 100-basis point increase/decrease in our variable interest rate on our borrowings would result in an interest expense increase/decrease of $3.9$4.2 million and $5.3$6.2 million, respectively, net of amounts received from our interest rate derivatives, over the next twelve months. In September 2016, we purchased an interest rate cap for $2.3 million to hedge approximately 70%a portion of our floating rate interest exposure. The interest rate cap is set at 2% and has a current notional balance of $405.0$390.0 million and reduces over time to $215.0 million. The cap matures in September 2021.
ITEM 4.CONTROLS AND PROCEDURES
Management’s Evaluation of Disclosure Controls and Procedures
The term “disclosure controls and procedures” is defined in Exchange Act Rules 13a-15(e) and 15d-15(e). This term refers to the controls and procedures of a company that are designed to ensure that information required to be disclosed by

a company in the reports that it files under the Exchange Act is recorded, processed, summarized and reported within the time periods specified by the SEC and that such information is accumulated and communicated to the Company’s management, including its Chief Executive Officer (“CEO”) and Chief Financial Officer (“CFO”) as appropriate, to allow timely decisions regarding required disclosure. An evaluation was performed under the supervision and with the participation of the Company’s management, including the CEO and CFO, of the effectiveness of the Company’s disclosure controls and procedures as of September 30, 2017March 31, 2018. Based on that evaluation, the Company’s management, including the CEO and CFO, concluded that the Company’s disclosure controls and procedures were effective as of September 30, 2017March 31, 2018.



Changes in Internal Control over Financial Reporting
There were no changes in the Company’s internal control over financial reporting, as such term is defined in Exchange Act Rules 13a-15(f) and 15d-15(f), that occurred during the quarter ended September 30, 2017March 31, 2018 that have materially affected, or are reasonably likely to materially affect, the Company’s internal control over financial reporting.

PART II. — OTHER INFORMATION
ITEM 1.LEGAL PROCEEDINGS
The Company is not a party to any material legal or adverse regulatory proceedings.
ITEM 1A. RISK FACTORS
There have been no material changes to the disclosure related to the risk factors described in our Annual Report on Form 10-K filed with the SEC for the year ended December 31, 2016.2017.
ITEM 2.UNREGISTERED SALES OF EQUITY SECURITIES AND USE OF PROCEEDS
Issuer Purchases of Equity Securities
In February 2016, our Board of Directors authorized the repurchase of $100.0 million of the Company’s common shares. During the thirdfirst quarter of 20172018, we purchased our common shares as follows:
Period
Total
Number
of Shares
Purchased
 
Average
Price
Paid
per Share
 
Total Number 
of Shares 
Purchased as 
Part of Publicly
Announced
Plans or
Programs(1)
 
Maximum Number
(or Approximate
Dollar Value) of
Shares that May
Yet Be Purchased
Under the Plans or
Programs (1)
 (Dollars in thousands, except per share amounts)
July 1 through July 31
 $
 
 $95,888
August 1 through August 31104,594
 0.01
 
 95,888
September 1 through September 30
 
 
 95,888
Total104,594
 $0.01
 
 $95,888
Period
Total
Number
of Shares
Purchased
 
Average
Price
Paid
per Share
 
Total Number 
of Shares 
Purchased as 
Part of Publicly
Announced
Plans or
Programs(1)
 
Maximum Number
(or Approximate
Dollar Value) of
Shares that May
Yet Be Purchased
Under the Plans or
Programs (1)
 (Dollars in thousands, except per share amounts)
January 1 through January 31100,572
 $23.39
 
 $95,888
February 1 through February 28
 
 
 95,888
March 1 through March 31361,880
 19.51
 354,737
 88,970
Total462,452
 $20.35
 354,737
 $88,970
 
        
(1)
We repurchased an additional 138,952 common shares at a total cost of $2.7 million, including commissions, during April 2018. Under our current repurchase program, we have repurchased an aggregate of 217,574711,263 common shares at an aggregate cost of $4.1$13.8 million, including commissions. The remaining dollar value of common shares that may be repurchased under the program is $86.2 million.
ITEM 3.DEFAULTS UPON SENIOR SECURITIES
None.

ITEM 4.MINE SAFETY DISCLOSURES
Not applicable.

ITEM 5.OTHER INFORMATION
None.

ITEM 6.EXHIBITS
Exhibit No. Description of Exhibit
   
3.1 
   
3.2 
   
4.1 
   
4.2 
   
4.3 
   
4.4 
   
4.5 
   
4.6 
   
4.7 
   
4.8 
   
4.9 
   
4.10 
   
4.11 
   
10.1
10.2
10.3

10.4
10.5
31.1 
   
31.2 

Exhibit No.Description of Exhibit
   
32.1 
   
32.2 
   
99.1 
   
101 
The following materials from the Company’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2017,March 31, 2018, formatted in XBRL (eXtensible Business Reporting Language): (i) Consolidated Balance Sheets as of September 30, 2017March 31, 2018 and December 31, 2016;2017; (ii) Consolidated Statements of Income for the three and nine months ended September 30, 2017March 31, 2018 and 2016;2017; (iii) Consolidated Statements of Comprehensive Income for the three and nine months ended September 30, 2017March 31, 2018 and 2016;2017; (iv) Consolidated Statements of Cash Flows for the ninethree months ended September 30, 2017March 31, 2018 and 2016;2017; and (v) Notes to Unaudited Consolidated Financial Statements. *
        
#    Management contract or compensatory plan or arrangement.
*    Filed herewith.
Ø    Portions of this exhibit have been omitted pursuant to a request for confidential treatment.



SIGNATURE
Pursuant to the requirements 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.
Dated: November 2, 2017May 3, 2018

 AIRCASTLE LIMITED
 (Registrant)
 By:/s/ Jose Maronilla, Jr.
  Jose Maronilla, Jr.
  Chief Accounting Officer and Authorized Officer

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