exhibit1048_17cxattachme






This copy of the document filed as an Exhibit excludes certain identified information  because such information is both (i) not material and (ii) would likely cause competitive  harm if publicly disclosed. Omissions are designated by the symbol [...***...].    Attachment to Letter Agreement  No. WJE-PA-05310-LA-2101485  LEAP-1B27 Engines  Page 1    MODEL 737-8200 PERFORMANCE GUARANTEES  FOR ALLEGIANT AIR, LLC  SECTION CONTENTS  1 AIRCRAFT MODEL APPLICABILITY  2 FLIGHT PERFORMANCE  3 SOUND LEVELS  4 AIRCRAFT CONFIGURATION  5 [...***...]  6 [...***...]  7 [...***...]     





 






P.A. No. 5130  AERO-B-BBA4-M21-0161A SS21-0144  BOEING PROPRIETARY  1 AIRCRAFT MODEL APPLICABILITY  The guarantees contained in this Attachment (the "Performance  Guarantees") are applicable to the 737-8200 Aircraft [...***...].  2 FLIGHT PERFORMANCE  2.1 [...***...]  2.1.1 [...***...]  2.1.2 [...***...]  2.2 [...***...]  [...***...]  2.3 [...***...]  [...***...]  2.4 [...***...]  [...***...]  2.5 [...***...]  2.5.1 [...***...]  [...***...]  2.5.2 [...***...]  [...***...]  2.5.3 [...***...]  [...***...]  2.5.4 [...***...]  [...***...]    





 






P.A. No. 5130  AERO-B-BBA4-M21-0161A SS21-0144  BOEING PROPRIETARY  2.5.5 [...***...]  [...***...]  2.5.6 [...***...]  [...***...]  2.5.7 [...***...]    [...***...]    3 [...***...]  3.1 [...***...]  3.1.1 [...***...]  [...***...]  4 AIRCRAFT CONFIGURATION  4.1 The guarantees contained in this Attachment are based on the Aircraft  configuration as defined in D019A008, Revision Y, "Configuration  Specification, Model 737-7, 737-8, 737-8200, 737-9, 737-10", dated  December 18, 2020, plus any changes mutually agreed upon or otherwise  allowed by the Purchase Agreement to be incorporated into the Customer’s  Detail Specification (herein referred to as the Detail Specification).  Appropriate adjustment will be made for changes in such Detail  Specification approved by the Customer and Boeing or otherwise allowed  by the Purchase Agreement which cause changes to the flight performance,  sound levels, and/or weight and balance of the Aircraft. Such adjustment  will [...***...].  4.2 The [...***...]payloads of [...***...] and the specified payload of the [...***...]  will be adjusted by Boeing for the effect of the following on OEW in its  [...***...] with [...***...]:  (1) Changes to the Detail Specification or any other changes mutually  agreed upon between the Customer and Boeing or otherwise allowed by  the Purchase Agreement.  (2) The difference between the component weight allowances given in  Appendix E of the Detail Specification and the actual weights.  





 






P.A. No. 5130  AERO-B-BBA4-M21-0161A SS21-0144  BOEING PROPRIETARY  5 [...***...]  5.1 [...***...].  5.2 The Federal Aviation Administration (FAA) regulations referred to in this  Attachment are, unless otherwise specified, the 737-8200 Certification  Basis regulations specified in the Type Certificate Data Sheet A16WE,  Revision 67, dated March 31, 2021.  5.3 In the event a change is made to any law, governmental regulation or  requirement, or in the interpretation of any such law, governmental  regulation or requirement that affects the certification basis for the Aircraft  as described in paragraphs 3.1 or 5.2, and as a result thereof, a change is  made to the configuration and/or the performance of the Aircraft in order to  obtain certification, [...***...]will be appropriately modified to reflect any  such change.  5.4 [...***...]    5.5 [...***...]    5.6 [...***...].  5.7 [...***...].  5.8 [...***...].  5.9 [...***...].  6 [...***...]  6.1 Compliance [...***...], the Aircraft configuration of Section 4 and the  guarantee [...***...]. Guarantee compliance will be shown for the units listed  first, not for the units shown in parentheses.  6.2 Compliance with [...***...]     6.3 Compliance with [...***...].  6.4 Compliance with [...***...].  6.5 Compliance with [...***...].  





 






P.A. No. 5130  AERO-B-BBA4-M21-0161A SS21-0144  BOEING PROPRIETARY  6.6 [...***...].  6.7 The data derived from tests will be adjusted as required by conventional  methods of correction, interpolation or extrapolation in accordance with  established engineering practices [...***...].  6.8 Compliance will be based on the performance of the airframe and engines  in combination, and will not be contingent on the engine meeting its  manufacturer's performance specification.  7 [...***...]  The [...***...] applicable to the Aircraft are those set forth in this Attachment.