New single-aisle airplanes will be required to be large enough so a male in the 95th percentile of weight can approach, enter, and maneuver as necessary to use the aircraft lavatory.

Double-aisle airplanes have been required to be wheelchair-accessible since 1992. "The lavatory should be big enough to have the passenger, the on-board wheelchair, and a personal attendant ...

Making airplanes more accessible has long been an issue. The group All Wheels Up reports that many wheelchair users are concerned about flying due to the risk of injury or damage to their wheelchair.