Standard Contracts
Supplemental Agreement No. 57Supplemental Agreement • April 21st, 2008 • Southwest Airlines Co • Air transportation, scheduled
Contract Type FiledApril 21st, 2008 Company IndustryTHIS SUPPLEMENTAL AGREEMENT, entered into as of January 25, 2008, by and between THE BOEING COMPANY, a Delaware corporation with principal offices in Seattle, Washington, (Boeing) and SOUTHWEST AIRLINES CO., a Texas corporation with principal offices in Dallas, Texas (Buyer);