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

• A. Use the EMER FLAP switch
• B. Place the GND LIFT DUMPING switch to MAN ARM
• C. Reset the hydraulic pump
• D. Push the ground spoilers switch twice

Answer: (B)

Ground spoilers normally deploy automatically on touchdown once weight-on-wheels is detected. If that automatic path doesn’t work, you can use the ground lift-dumping system in manual arm mode. Setting the GND LIFT DUMPING switch to MAN ARM enables manual control of the spoilers, allowing them to be deployed by the ground spoilers switch when you command them. This provides a manual fallback so braking and lift dumping can still occur even with a failure in the automatic deployment logic. The other options don’t provide that manual path: the emergency flap switch relates to flaps, not spoilers; resetting the hydraulic pump isn’t a direct fix for spoiler deployment; and pressing the ground spoilers switch twice isn’t part of a standard procedure to deploy them manually.