How many attempts can be made during a dry motoring sequence before a cool-down is required?

In the context of a dry motoring sequence, the recommended guideline indicates that up to five attempts can be made before a cool-down is required. This sequence is essential for checking the engine before starting, allowing for the verification of system functionality and conditions without involving fuel or ignition. Each motoring attempt generates heat, and operating within the defined limits—here five attempts—prevents overheating and helps maintain the integrity of the engine components.

This procedure ensures safety and operational efficiency, as excessive attempts without a cool-down period can lead to engine damage or failure. Understanding these operational limits is crucial for effective engine management in aviation, helping pilots and ground crews make informed decisions during pre-flight checks.