Legacy airline seats are typically designed and stay inside one specific aircraft type. A carrier typically designs a flagship business-class product around the fuselage width of an aircraft, its door geometry, and its galley layout. The certification quirks of a specific aircraft typically make it challenging for any seat to be placed on multiple different models. American Airlines has elected to take a different approach for its Flagship Suite, its latest premium product. Instead of a seat attached to a specific aircraft, this branded experience will now travel across the airline’s long-haul fleet, ranging from massive Boeing 777s to, most notably, the long-range Airbus A321XLR. This matters as the American Airlines network is increasingly built around matching capacity to demand.