Formula.Β The formula referred to in paragraph 3.1 is as follows: ππ π = β((πππ΄πΆπ + ππ πΈπ½π)βπ΅πΉβππ ππ βππΉ) where:

Formula.Β Airframe and Optional Featuresprice adjustments (Airframe Price Adjustment) are used to allow prices to be stated in current year dollars at the signing ofthis Purchase Agreement and to adjust the amount to be paidby Customerat delivery for the effects of economic fluctuation. The Airframe Price Adjustment will be determined at the time of Aircraft deliveryin accordance with the following formula: Pa = (P) (L + M) - P Where: Pa = Airframe Price Adjustment. (For Models 717-200, 737-600, 737-700, 737-800, 737-900, 777-200LR and 777-300ER the Airframe Price includes the Engine Price at its basic thrust level.) L = .65 x (ECI ECIb ) where ECIb is the base year index (as set forth in Table 1 of this Purchase Agreement) M = .35 x (CPI CPIb) where CPIb is the base year index (as set forth in Table 1 of this Purchase Agreement) P = Airframe Price plus Optional Features Price (as set forth in Table 1 of this Purchase Agreement). ECI is a value determined using the U.S. Department of Labor, Bureau of Labor StatisticsEmployment Cost Index Manufacturing β Total Compensation (BLS Series ID ECU12402I), calculated by establishing a three-month arithmetic average value (expressed as a decimal and rounded to the nearest tenth) using the values for the 11th, 12th and 13th months prior to the month of scheduled delivery of the applicable Aircraft. As the Employment Cost Index values are only released on a quarterly basis, the value released for the first quarter will be used for the months of January, February and March; the value released for the second quarter will be used for the months of April, May and June; the value released for the third quarter will be used for the months of July, August and September; the value released for the fourth quarter will be used for the months of October, November and December. CPI is a value determined using the U.S. Department of Labor, Bureau of Labor Statistics Consumer Price Index (BLS Series ID CUUR0000SA0), calculated as a 3-month arithmetic average of the released monthly values (expressed as a decimal and rounded to the nearest tenth) using the values for the 11th, 12th and 13th months prior to the month of scheduled delivery of the applicable Aircraft. As an example, for an Aircraft scheduled to be delivered in the month of July, the months June, July and August of the preceding year will be utilized in determining the value of ECI and CPI.

Formula.Β The number of points change in the CPI during a measurement period, as limited by paragraph (d), shall be converted into cents on the basis of one cent equals 0.3 full points. (By "0.3 full points" it is intended that any remainder of 0.1 point or 0.2 point of change after the conversion shall not be counted.) The cost-of-living allowancein effecton December 31, 2000 shall be adjusted (increased or decreased) effective January 1, 2001 by the whole number of cents produced by dividing by 0.3 the number of points (including tenths of points) change, as limited by paragraph (d), in the CPI during the applicable measurement period. Any residual tenths of a point resulting from such division shall be dropped. The result of such division shall be added to the amount of the cost-of-living allowance in effect on December 31, 2000 if the CPI shall have been higher at the end than at the beginning of the measurement period, and subtracted therefrom only if the index shall have been lower at the end than at the beginning of the measurement period and then, only, to the extent that the allowance remains at zero or above. The same procedure shall be followed in applying subsequent adjustments.

Formula.Β The number of points change in the CPI during a measurement period, as limited by paragraph (b), shall be converted into cents on the basis of one cent equals 0.3 full points. (By "0.3 full points" it is intended that any remainder of 0.1 point or 0.2 point of change after the conversion shall not be counted.) The cost-of-living allowanceeffective January 1, 2006 shall be the whole number of cents produced by dividing by 0.3 the number of points (including tenths of points) change, as limited by paragraph (b), in the CPI during the applicable measurement period. Any residual tenths of a point resulting from such division shall be dropped. The result of such division shall be rolled in to basic rates of payin effecton December 31, 2005 if the CPI shall have been higher at the end than at the beginning of the measurement period, and subtracted therefrom only if the index shall have been lower at the end than at the beginning of the measurement period, but in no event shall basic rates of pay be reduced below the levels in effect on June 30, 2005. If the result of such division requires a subtraction from basic rates of pay in effect on December 31, 2005, the employee cost- sharing contribution amount in effect on that date pursuant to Article IV, Part B, Section 1(e) of this Agreement shall be adjusted effective January 1, 2006 as appropriate to reflect such subtraction. The same procedure shall be followed in applying subsequent adjustments.

Formula.Β The Airframe Price Adjustment will be determined at the time of Aircraft deliveryin accordance with the following formula: Pa = (P)(L + M - 1) Where: Pa = Airframe Price Adjustment. L = .65 x ECI 130.1 M = .35 x ICI 123.6 P = Aircraft Basic Price (as set forth in Article 3.2 of this Agreement) less the base price of Engines (as defined in this Exhibit D) in the amount of $[Confidential Treatment Requested]. ECI = A value using the "Employment Cost Index for workers in aerospace manufacturing" (aircraft manufacturing, standard industrial classification code 3721, compensation, base month and year June 1989 = 100), as released by the Bureau of Labor Statistics, U.S. Department of Labor on a quarterly basis for the months of March, June, September and December, calculated as follows: A three-month arithmetic average value (expressed as a decimal and rounded to the nearest tenth) will be determined using the months set forth in the table below for the applicable Aircraft, with the released Employment Cost Index value described above for the month of March also being used for the months of January and February; the value for June also used for April and May; the value for September also used for July and August; and the value for December also used for October and November. ICI = The three-month arithmetic average of the released monthly values for the Industrial Commodities Index as set forth in the "Producer Prices and Price Index" (Base Year 1982 = 100) as released by the Bureau of Labor Statistics, U.S. Department of Labor values (expressed as a decimal and rounded to the nearest tenth) for the months set forth in the table below for the applicable Aircraft. In determining the value of L, the ratio of ECI divided by 130.1 will be expressed as a decimal rounded to the nearest ten-thousandth and then multiplied by .65 with the resulting value also expressed as a decimal and rounded to the nearest ten-thousandth. In determining the value of M, the ratio of ICI divided by 123.6 will be expressed as a decimal rounded to the nearest ten-thousandth and then multiplied by .35 with the resulting value also expressed as a decimal and rounded to the nearest ten-thousandth. Months to be Utilized Month of Scheduled in Determining the Aircraft Delivery Value of ECI and ICI January June B, July B, Aug. B February July B, Aug. B, Sept. B March Aug. B, Sept. B, Oct. B April Sept. B, Oct. B, Nov. B May Oct. B, Nov. B, Dec. B June Nov. B, Dec. B, Jan. D July Dec. B, Jan. D, ...