There are a number of ''cabin flex'' options for the A321N and the LR and XLR.
The options include varying the number of toilets, galleys', and the number of overwing exits, and the aft exit door to be plugged (deactivated) or not.
These options entail the capacity to be up to 235-240 High density passengers.
The A321XLR is offering up to 4,700 nautical miles, thanks to a new fuel tank, plus a higher maximum takeoff weight, but the XLR is having some issues with delivering on the range that it has been promising airlines with its new ultra long range narrow body.
While the aircraft was initially supposed to enter passenger service as of 2023, it has encountered some delays with the certification process, and the A321XLR has been delayed until 2024.
The reason is that the European Union Aviation Safety Agency (EASA) has expressed safety concerns about the aircraft’s extra fuel tank.
The A321XLR needs a new fuel tank safety feature and this may reduce the plane’s range by more than 200 nautical miles.
There are some certification issues with the location of the larger extra fuel tank in the rear fuselage,
and the concern was that this posed a fire safety risk.