To stop doing something or stop a process that you had intended to do or had already started to do, especially a take-off or landing: take-off must be aborted before V1.
Airborne Collision Avoidance System: an aircraft system using Secondary Surveillance Radar (SSR) transponder signals, which operates independently of ground equipment to alert the flight crew about conflicting aircraft.
Indicating that the runway is to the side of the aircraft, at a bearing of approximately 90° or 270° relative to the aircraft, i.e. to the right or the left
Force involved in overcoming inertia, and which may be defined as a change in velocity per unit of time.