The companies’ exchange relationship began with United’s V2500-powered fleet and has been extended to designated CFM56-7B engines with the program structured to grow over its term.

Under the MRE program, FTAI delivers a serviceable engine ahead of each of United’s scheduled removals and then purchases United's unserviceable engine in exchange, sparing the airline the cost and downtime of a traditional shop visit. FTAI adds each acquired engine to its inventory as feedstock for its MRO network. The program started with an initial group of engines in 2026 and will continue to expand over its term as additional engines come due for removal, with FTAI and United jointly planning deliveries against the airline's removal schedule.