What should not be done if the power control lever is moved to cutoff during ground operations?

If the power control lever is moved to cutoff during ground operations, attempting to relight the engine should not be done. This action signifies that the fuel supply to the engine is deliberately halted, which means that the engine has effectively entered a non-operational mode. In this situation, trying to relight the engine could lead to unsafe conditions, especially if done without following proper procedures or checks.

When the power control lever is in the cutoff position, the system is designed to prevent fuel from reaching the engine, and the relighting process could introduce complications, including potentially hazardous situations such as fuel leaks or improper engine conditions. The safety protocols typically advise against actions that could reintroduce fuel into the combustion system without ensuring all safety measures are in place, as this may lead to an uncontained engine failure or fire risk.

Other actions, such as shutting off the fuel supply or switching to alternate fuel, are generally routine and may be necessary depending on the operational context, while adjusting the throttles is often permissible during ground operations for various reasons, including engine monitoring or preparing for startup.