What is the cooldown after 2 consecutive unsuccessful APU start attempts?

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Multiple Choice

What is the cooldown after 2 consecutive unsuccessful APU start attempts?

Explanation:
After two consecutive unsuccessful APU start attempts, you must wait for one hour before trying again. This cooldown protects the APU and its start system from thermal and mechanical stress and gives time for any transient faults to clear. It also ensures you have a moment to recheck fuel supply, power availability, and related systems before another start attempt. The one-hour interval is the standard procedure, so that’s why this answer is chosen.

After two consecutive unsuccessful APU start attempts, you must wait for one hour before trying again. This cooldown protects the APU and its start system from thermal and mechanical stress and gives time for any transient faults to clear. It also ensures you have a moment to recheck fuel supply, power availability, and related systems before another start attempt. The one-hour interval is the standard procedure, so that’s why this answer is chosen.

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