Which signals are not advisory and must be followed immediately?

Which signals are not advisory and must be followed immediately?

• A. "Wave off" and "Hold"
• B. "Proceed" and "Pause"
• C. "Ready" and "Standby"
• D. "Launch" and "Retract"

Answer: (A)

The signals designated as "Wave off" and "Hold" are critical commands that require immediate action and adherence. "Wave off" indicates that an aircraft must not proceed with landing or must abandon the landing approach and go around for safety reasons. It often signifies that conditions are not safe for landing, such as runway obstructions or unsafe conditions on deck. On the other hand, "Hold" is a command directed to halt any further action, typically when an aircraft is in the process of landing or maneuvering on the flight deck. This ensures safety while the situation is assessed or while waiting for clearance to continue operations. These signals are fundamentally different from advisory signals, as they are explicitly directive and necessitate prompt compliance. This is essential for maintaining safety and operational integrity on the flight deck.

The signals designated as "Wave off" and "Hold" are critical commands that require immediate action and adherence. "Wave off" indicates that an aircraft must not proceed with landing or must abandon the landing approach and go around for safety reasons. It often signifies that conditions are not safe for landing, such as runway obstructions or unsafe conditions on deck.

On the other hand, "Hold" is a command directed to halt any further action, typically when an aircraft is in the process of landing or maneuvering on the flight deck. This ensures safety while the situation is assessed or while waiting for clearance to continue operations.

These signals are fundamentally different from advisory signals, as they are explicitly directive and necessitate prompt compliance. This is essential for maintaining safety and operational integrity on the flight deck.