Which action helps maintain stability of the aircraft when extending or retracting landing gear for inspection?

• A. Wheel chocks
• B. Lockout/tagout procedures
• C. Support aircraft with jacks
• D. De-energize hydraulics

Answer: (C)

Stability during gear extension or retraction comes from providing solid, controlled support to the aircraft so the airframe doesn’t shift as the gear moves. Using jacks to support the aircraft at approved jack points distributes the load and keeps the fuselage level while the landing gear struts are actuated. This minimizes the risk of tipping, bending, or unintended contact with the ground or gear components as the gear retracts or extends for inspection.

Wheel chocks are useful for preventing horizontal rolling on the ramp, but they don’t supply the vertical support needed when the gear is being moved. Safety procedures like lockout/tagout or de-energizing hydraulics are important to prevent inadvertent actuation, but they don’t directly stabilize the aircraft physically during gear operation. The key action that maintains stability is supporting the aircraft with jacks.