What is the duration required between subsequent dry motoring starts?

The required duration between subsequent dry motoring starts is 5 minutes. This interval is crucial because it allows the engine to cool down adequately and prevents excessive wear or damage to the components of the engine that could occur from rapid and repeated starts. Dry motoring, which is the process of turning the engine over without it firing, is typically performed to check for mechanical integrity or to clear fuel from the cylinders. Adhering to this 5-minute wait time not only ensures proper engine health but also aligns with standard operating procedures in aviation maintenance practices.