Aircraft Towing and Pushback Operations Flashcards

What is the universally recognized hand signal for an EMERGENCY STOP during aircraft ground movement operations?

Answer: Both arms crossed above the head

Crossing both arms above the head in an 'X' shape is the standard emergency stop signal, designed to be immediately visible and unambiguous to all crew members.

Before beginning any aircraft towing operation, what two steps are mandatory?

Answer: Complete a pre-tow safety briefing and perform an equipment serviceability inspection

A pre-tow safety briefing aligns all crew on the route and responsibilities, while an equipment inspection confirms the tug, towbar, and headsets are fully serviceable before the operation.

What is the risk of initiating a towing operation with nose gear chocks still in place?

Answer: Severe structural damage to the nose gear due to sudden extreme tow force

Attempting to tow against in-place chocks applies sudden, extreme force to the nose gear structure that can cause irreparable structural damage or gear collapse.

During a power-back (engine-running taxi-back) operation, who is responsible for monitoring the jet blast hazard zone?

Answer: Dedicated ground spotters posted at the jet blast perimeter

Dedicated spotters must be positioned at the boundaries of the jet blast zone to ensure no personnel, equipment, or aircraft enter the hazard area during the power-back.

A 'push-and-turn' pushback maneuver describes which sequence of aircraft movements?

Answer: Pushing straight back from the gate, then turning the aircraft to align with the taxiway

In a push-and-turn, the tug first pushes the aircraft straight back to provide clearance, then performs a controlled turn to position the aircraft on the correct heading for taxiway departure.

What is the minimum crew size required for a standard aircraft pushback operation?

Answer: Two persons (tug driver and a headset operator communicating with the cockpit)

A minimum of two crew members are required — one to operate the tug and one to maintain interphone communication with the cockpit — to safely execute a standard pushback.

Why is the nose gear shimmy damper particularly relevant to aircraft towing operations?

Answer: It dampens nose gear oscillations and vibrations that can develop during towing

The shimmy damper absorbs rapid oscillatory vibrations in the nose gear assembly, which is critical during towing because a failed or degraded damper can allow dangerous shimmy that damages the gear structure.