What action should be taken once the aircraft is securely jacked?

Once the aircraft is securely jacked, performing a stability check is essential to ensure that the aircraft is stable and properly supported before any further work or inspections can take place. This step is critical for safety, as a thorough stability check confirms that the jacking system is holding the aircraft securely and that there is no risk of it shifting or falling during maintenance activities.

Conducting a stability check typically involves assessing the jacking points and verifying that they are in the correct position. It also includes ensuring that the load is evenly distributed, which minimizes the risk of tipping or collapse. Neglecting this step could lead to serious safety hazards, making it an integral part of the jacking process.

While the other actions mentioned may also be part of the maintenance workflow, their execution is contingent upon first confirming that the aircraft is stable and secure. For example, removing safety equipment may prematurely expose workers to risk, and commencing engine operations would only be appropriate when everything else confirms readiness. Lowering the aircraft immediately would counteract the purpose of jacking it up in the first place.