After how many minutes of dry motoring is the engine required to cool off for a minimum period?

Following a dry motoring session, it is important to allow sufficient cooling time for the engine to prevent overheating and potential damage. The correct cooling-off period after dry motoring is 5 minutes. This duration is specified in the aircraft's operating procedures to ensure that the components of the engine can dissipate heat effectively and maintain integrity for future operations.

Setting a 5-minute cooling period reflects best practices in engine management, where components subjected to high temperatures require an adequate time to return to normal operating temperatures. This helps enhance the safety and longevity of the engine, ensuring that it is in optimal condition before resuming normal operation or performing additional dry motoring.

Understanding the rationale for this cooling-off period is crucial for flight crew members to maintain the operational health of the aircraft throughout its service life.