Engine Escalation and Engine Warranty Supplemental Exhibit to Purchase Agreement No. 3219 between The Boeing Company and American Airlines, Inc.

This agreement is a supplemental exhibit to a purchase agreement between The Boeing Company and American Airlines, Inc. It outlines terms related to engine price adjustments (escalation), values to be used if certain items are unavailable, and the engine warranty and product support plan. Most specific details are confidential, but the agreement ensures that American Airlines receives defined protections and support for aircraft engines purchased from Boeing, including warranty coverage and procedures for handling price changes or unavailability of certain components.