In spite of ordering 47-787 last week, American Airlines indicates a "strong" interest in the Boeing 797 product, which has yet to be announced by Boeing as it refines 797 proposals for its select and potential launch customers. American Airlines will long have received its 47th Dreamliner during 2025.
Flight Global reports, "The deal includes orders for 22 787-8s, which will arrive starting in 2020, and 25 787-9s, which will be delivered starting in 2023. Deliveries will wrap up around 2025, according to Flight Fleets Analyzer."
The 797 will tentatively start first deliveries as Boeing's NMA during or after 2025 as it has a substantial number of 767's and some 777's needing replacing on some of its 5,000 nm routes and will come off active duty from fleet aging conditions by 2025 and beyond. The NMA would likely slot-in behind those retirements at that time.