Rudder boost must be operable and:

Rudder boost must be operable and:

• A. Armed for takeoff
• B. Armed for all operations
• C. Only armed in flight testing
• D. Deactivated in flight

Answer: (B)

The system being tested here is the rudder boost, which provides hydraulic or electric assistance to the rudder to reduce pilot effort and maintain good yaw control across flight regimes. For safe operation, this boost must be both operable and armed during all phases of flight. If it’s not armed, the boost assist won’t be available when you need it most—during high-speed flight, engine-out conditions, or strong crosswinds—leaving you to contend with heavier rudder pedal forces and reduced control authority. Therefore, the correct approach is to have the rudder boost ready and engaged for every operation, not just for takeoff or during testing. Deactivating it in flight or limiting it to specific phases would compromise controllability when it’s most critical.

The system being tested here is the rudder boost, which provides hydraulic or electric assistance to the rudder to reduce pilot effort and maintain good yaw control across flight regimes. For safe operation, this boost must be both operable and armed during all phases of flight. If it’s not armed, the boost assist won’t be available when you need it most—during high-speed flight, engine-out conditions, or strong crosswinds—leaving you to contend with heavier rudder pedal forces and reduced control authority. Therefore, the correct approach is to have the rudder boost ready and engaged for every operation, not just for takeoff or during testing. Deactivating it in flight or limiting it to specific phases would compromise controllability when it’s most critical.