Exhibit 10.42 ------------- CHANGE ORDER NO. 10 DATED November 6, 1998 TO PURCHASE AGREEMENT NO. 1663 BETWEEN THE BOEING COMPANY AND UNITED AIR LINES, INC. THIS CHANGE ORDER DOCUMENTS CHANGES APPLICABLE TO [*CONFIDENTIAL MATERIAL OMITTED AND FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT] "A" MARKET AIRCRAFT I. Purpose of Change Order 10. -------------------------- The purpose of this Change Order 10 is to collect and make current all historical special features included in the "A" Market configuration, including Exhibit A-1, previous Change Orders 1 through 7, and master changes purchased between the execution of Change Order 7 and execution of this Change Order 10. Accordingly, the net effect on weight and pricing of all special features previously purchased are reflected herein. Purchase Agreement No. 1663, dated December 18, 1990 between The Boeing Company and United Air Lines, Inc. as previously amended (the Agreement) is hereby further amended as follows: II. Effect of Changes on Exhibit A-1 (Detail Specification). ------------------------------------------------------- The attached Price Tabulation including the effects of the changes listed are hereby deemed incorporated into Exhibit A-1 and Detail Specification [*CONFIDENTIAL MATERIAL OMITTED AND FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT]. Change Order No. 10 to Purchase Agreement No. 1663 Page 2 III. Effect of Changes on the Purchase Agreement (Except Exhibit A-1). ---------------------------------------------------------------- As shown in the table below, the total net price of all Special Features applicable to [*CONFIDENTIAL MATERIAL OMITTED AND FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT] (including Exhibit A-1 and Change Orders 1 through 7, plus the additional changes in this Change Order 10) was [*CONFIDENTIAL MATERIAL OMITTED AND FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT]. For all [*CONFIDENTIAL MATERIAL OMITTED AND FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT] aircraft, the total net price of all Special Features (including Exhibit A-1 and Change Orders 1 through this Change Order 10) shall be [*CONFIDENTIAL MATERIAL OMITTED AND FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT]. Per Aircraft Price Per Aircraft Price Adjustment Adjustment [*CONFIDENTIAL [*CONFIDENTIAL MATERIAL OMITTED MATERIAL OMITTED AND FILED AND FILED SEPARATELY WITH SEPARATELY WITH THE SECURITIES THE SECURITIES AND EXCHANGE AND EXCHANGE COMMISSION COMMISSION PURSUANT TO A PURSUANT TO A REQUEST FOR REQUEST FOR CONFIDENTIAL CONFIDENTIAL Aircraft Effectivity TREATMENT] TREATMENT] ____________________ __________________ ___________________ [*CONFIDENTIAL MATERIAL OMITTED AND FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT] SIGNED as of the day and year first above written. ********************** THE BOEING COMPANY UNITED AIR LINES, INC. By /s/ Brian R. Belka By /s/ Douglas A. Hacker ------------------ --------------------- Douglas A. Hacker Its Attorney-in-Fact Its Senior Vice President and ---------------- ------------------------- Chief Financial Officer Attachment to Change Order No. 10 to Purchase Agreement No. 1663 Page 1 of 6 Price Tabulation UAL Model 777-222 Aircraft Block A "A" Market [*CONFIDENTIAL MATERIAL OMITTED AND FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT] Aircraft CHANGE NO. TITLE [*CONFIDENTIAL MATERIAL OMITTED AND FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT] ___________ __________ __________ __________ __________ [*CONFIDENTIAL MATERIAL OMITTED AND FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT] Attachment to Change Order No. 10 to Purchase Agreement No. 1663 Page 2 of 6 CHANGE NO. TITLE [*CONFIDENTIAL MATERIAL OMITTED AND FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT] ___________ __________ __________ __________ __________ [*CONFIDENTIAL MATERIAL OMITTED AND FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT] ___________ ___________ ___________ ___________ ___________ EXHIBIT "A" [*CONFIDENTIAL MATERIAL OMITTED AND TOTAL FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT] [*CONFIDENTIAL MATERIAL OMITTED AND FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT] Attachment to Change Order No. 10 to Purchase Agreement No. 1663 Page 3 of 6 CHANGE NO. TITLE [*CONFIDENTIAL MATERIAL OMITTED AND FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT] ___________ __________ __________ __________ __________ [*CONFIDENTIAL MATERIAL OMITTED AND FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT] ___________ ___________ ___________ ___________ ___________ TOTAL C.O.1 [*CONFIDENTIAL MATERIAL OMITTED AND FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT] [*CONFIDENTIAL MATERIAL OMITTED AND FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT] Attachment to Change Order No. 10 to Purchase Agreement No. 1663 Page 4 of 6 CHANGE NO. TITLE [*CONFIDENTIAL MATERIAL OMITTED AND FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT] ___________ __________ __________ __________ __________ [*CONFIDENTIAL MATERIAL OMITTED AND FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT] ___________ ___________ ___________ ___________ ___________ TOTAL C.O.2 [*CONFIDENTIAL MATERIAL OMITTED AND FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT] [*CONFIDENTIAL MATERIAL OMITTED AND FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT] ___________ ___________ ___________ ___________ ___________ TOTAL C.O.3 [*CONFIDENTIAL MATERIAL OMITTED AND FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT] [*CONFIDENTIAL MATERIAL OMITTED AND FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT] ___________ ___________ ___________ ___________ ___________ TOTAL C.O.4 [*CONFIDENTIAL MATERIAL OMITTED AND FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT] [*CONFIDENTIAL MATERIAL OMITTED AND FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT] Attachment to Change Order No. 10 to Purchase Agreement No. 1663 Page 5 of 6 CHANGE NO. TITLE [*CONFIDENTIAL MATERIAL OMITTED AND FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT] ___________ __________ __________ __________ __________ [*CONFIDENTIAL MATERIAL OMITTED AND FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT] ___________ ___________ ___________ ___________ ___________ TOTAL C.O.5 [*CONFIDENTIAL MATERIAL OMITTED AND FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT] [*CONFIDENTIAL MATERIAL OMITTED AND FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT] ___________ ___________ ___________ ___________ ___________ TOTAL C.O.6 [*CONFIDENTIAL MATERIAL OMITTED AND FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT] [*CONFIDENTIAL MATERIAL OMITTED AND FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT] ___________ ___________ ___________ ___________ ___________ TOTAL C.O.7 [*CONFIDENTIAL MATERIAL OMITTED AND FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT] [*CONFIDENTIAL MATERIAL OMITTED AND FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT] Attachment to Change Order No. 10 to Purchase Agreement No. 1663 Page 6 of 6 CHANGE NO. TITLE [*CONFIDENTIAL MATERIAL OMITTED AND FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT] ___________ __________ __________ __________ __________ [*CONFIDENTIAL MATERIAL OMITTED AND FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT] ___________ ___________ ___________ ___________ ___________ ADDITIONAL [*CONFIDENTIAL MATERIAL OMITTED AND CHANGE FILED SEPARATELY WITH THE SECURITIES TOTAL AND EXCHANGE COMMISSION PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT] ___________ ___________ ___________ ___________ ___________ GRAND [*CONFIDENTIAL MATERIAL OMITTEED AND TOTAL FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT] Total Weight Change Engineering Tab Block MEW OEW [*CONFIDENTIAL (SEE NOTE 1) (SEE NOTE 1) MATERIAL OMITTED AND FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT] [*CONFIDENTIAL (SEE NOTE 1) (SEE NOTE 1) MATERIAL OMITTED AND FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT] Follow-On NOTE 1: Weight change data was not completed at the time of signing this Change Order. Weights will be provided to Buyer not later than 30 days after the date of execution of this Change Order.