If the ground spoilers fail to deploy, how else can they be deployed?

• A. Place the GND LIFT DUMPING switch to MAN ARM
• B. Power cycle the avionics
• C. Pull the circuit breaker
• D. Manually rotate the spoilers handle

Answer: (A)

When you’re dealing with ground spoiler deployment, redundancy matters: there’s an automatic path that engages on landing, but a manual backup exists if the automatic logic or hydraulics don’t cooperate. The switch that controls ground lift/dump is used to select how the system operates. Setting that switch to MAN ARM puts the ground lift-dump system in a manual/armed mode, which provides a backup way to deploy the spoilers so they can still deploy when needed, even if the automatic path has failed.

Other options don’t give you a reliable deployment path. Power cycling the avionics or pulling a circuit breaker won’t guarantee the spoilers will deploy and could introduce other system faults. Manually rotating a spoilers handle isn’t the standard method for this aircraft’s ground-spoiler deployment; the manual-armed setting is the designed alternative.