FAA Aviation Mechanic General (AMG)Ground Operations and ServicingEasy
During a pushback operation, the tow tractor operator loses sight of the wing walker's hand signals momentarily. The wing walker then crosses both arms rapidly above the head. What action does this signal require?
- AStop all movement immediately (emergency stop)
- BInsert wheel chocks immediately
- CPrepare to start engines
- DContinue pushback slowly while monitoring wingtip clearance
Show answer & explanationAnswer & explanation
Correct answer: A. Stop all movement immediately (emergency stop)
Crossing the arms rapidly above the head is the standard emergency stop signal used by ground crew, requiring immediate cessation of all aircraft movement to avoid a hazard.
Why the other options are wrong
- B. Chock insertion has a distinct signal (fists together then hands moved apart at wheel level).
- C. Engine start has its own separate rotating-hand signal, unrelated to crossed arms.
- D. Continuing movement after an emergency stop signal risks collision or injury.
Ground Marshaling Signals
Standardized hand/arm signals used by ground crew to direct aircraft movement during taxi, towing, and pushback.
- Crossed arms overhead = emergency stop
- Normal stop = arms extended, brought together slowly
- Signals must be visible and unambiguous at all times
Memory trick: Arms crossed like an X = eXtreme stop now!