When jacking an aircraft, what is the first action that should be taken?

When preparing to jack an aircraft, performing a pre-jack inspection is the essential first action. This step is crucial because it ensures that the aircraft is in a safe condition to be jacked and that all systems are functioning properly. The pre-jack inspection includes checking the area around the aircraft for obstacles, ensuring that the jacking points are clean, and reviewing any specific procedures associated with jacking that may be relevant to the aircraft type.

This phase is critical for safety, as it helps identify any potential hazards, such as leaks or equipment malfunctions, before applying any jacking loads. Completing this inspection thoroughly reduces the risk of accidents or damage during the jacking process, making it a foundational step. Other actions, like placing wheel chocks, raising the aircraft, or connecting the hydraulic system, are important as well, but they should follow the comprehensive check indicated by the pre-jack inspection.