Supplemental Agreement No. 20 to Purchase Agreement Number 2022, dated March 30, 2107, between The Boeing Company and Delta relating to Boeing Model 737NG Aircraft ("Supplemental Agreement No. 20")

The information contained herein represents confidential business information and has value precisely because it is not available generally or to other parties.  Each party will limit the disclosure of its contents to its employees with a need to know the contents for purposes of helping it perform its obligations under the Purchase Agreement and who understand they are not to disclose its contents to any other person or entity without the prior written consent of the other party.  Notwithstanding the foregoing, either party may disclose this Letter Agreement (i) for the purpose of regulatory requirements, including without limitation registrations and filings pursuant thereto, or as otherwise required by law, provided that the disclosing party makes commercially reasonable efforts to notify the non-disclosing party in advance of such disclosure and considers in good faith all limitations on such disclosure requested by the non-disclosing party; (ii) for the purpose of disclosure to its auditors and its legal advisors on a need to know basis who themselves agree not to further disclose such information; and (iii) to the extent such information is publicly available other than as a result of the disclosure by or on behalf of such party.