Before revision: Other upright=2.5|Other coordinate references on the aircraft body
After revision: Many other reference point are used, especially on a large aircraft: Aileron station (AS), distance from the inboard edge of an aileron; Flap station (KS), distance from the edge of the flap; Nacelle station (NS); Elevator station (ES); Vertical stabilizer station (VSS).Other upright=2.5|Other coordinate references on the aircraft body