What is the wait time before the third start attempt after a failure?

The correct answer is based on established procedures for managing start attempts in aircraft operations. The wait time before the third start attempt after a failure is set to allow for appropriate cooling and to prevent potential damage to the engine systems due to excessive heat build-up or continued unsuccessful attempts.

In this context, a wait time of 5 minutes is typically recommended as it provides sufficient time for any residual fuel to dissipate and permits the systems to reset. This adherence to a specific interval is critical for ensuring safety and maintaining the integrity of the engine and associated components during the starting process. Following this protocol helps ensure that subsequent attempts have the best chance of success without compounding issues that may arise from hasty retries.