As its development proceeded in the late 2010s and early 2020s, theAirbus A321XLR was positioned as an exciting ‘Swiss army knife’ of an aircraft that would allow carriers to serve lower-demand long-haul markets without having to run the economic risk of using a larger widebody to do so. This has been evidenced by its use to date, particularly on transatlantic routes between smaller cities. Now, however, it may have hit a roadblock.