What is the primary command to indicate aircraft readiness for movement?

What is the primary command to indicate aircraft readiness for movement?

• A. Remove chocks
• B. Stop engines
• C. Want air supply unit
• D. Close external doors/retract airstair

Answer: (A)

The primary command to indicate aircraft readiness for movement is to remove chocks. Chocks are placed in front of an aircraft's wheels to prevent it from rolling while it is on the ground. Removing the chocks signifies that the aircraft is cleared for taxiing, as it indicates that the ground crew has ensured that the aircraft is not constrained for movement. The other options provided serve different functions during ground operations. Stopping engines is related to preparing the aircraft for a different phase rather than indicating readiness to move. Requesting an air supply unit pertains to cabin conditions and not directly to readiness for movement. Closing external doors and retracting an airstair is a part of the overall departure preparation process but does not specifically indicate that the aircraft is ready to move. In the context of aircraft operations, removing the chocks is the most clear and direct signal that the aircraft can begin taxiing.

The primary command to indicate aircraft readiness for movement is to remove chocks. Chocks are placed in front of an aircraft's wheels to prevent it from rolling while it is on the ground. Removing the chocks signifies that the aircraft is cleared for taxiing, as it indicates that the ground crew has ensured that the aircraft is not constrained for movement.

The other options provided serve different functions during ground operations. Stopping engines is related to preparing the aircraft for a different phase rather than indicating readiness to move. Requesting an air supply unit pertains to cabin conditions and not directly to readiness for movement. Closing external doors and retracting an airstair is a part of the overall departure preparation process but does not specifically indicate that the aircraft is ready to move. In the context of aircraft operations, removing the chocks is the most clear and direct signal that the aircraft can begin taxiing.