After securing the FCS and Boost Pumps following three consecutive failed starts, how long must you wait before attempting a fourth start?

After securing the FCS and Boost Pumps following three consecutive failed starts, how long must you wait before attempting a fourth start?

• A. 60 seconds
• B. 30 seconds
• C. 45 seconds
• D. 90 seconds

Answer: (A)

After three consecutive failed starts, you need a cooldown period to let the fuel system settle and the engine components stabilize before trying again. Securing the FCS (Fuel Control System) and Boost Pumps isolates the fuel flow and prevents any unintended priming or pressure effects during the wait. The standard procedure calls for a 60-second pause before attempting a fourth start, giving time for residual fuel to purge and for temperatures and pressures to normalize. Starting too soon can lead to another failed start or potential damage, while the 60-second interval is the established duration to safely reset the cycle.

After three consecutive failed starts, you need a cooldown period to let the fuel system settle and the engine components stabilize before trying again. Securing the FCS (Fuel Control System) and Boost Pumps isolates the fuel flow and prevents any unintended priming or pressure effects during the wait. The standard procedure calls for a 60-second pause before attempting a fourth start, giving time for residual fuel to purge and for temperatures and pressures to normalize. Starting too soon can lead to another failed start or potential damage, while the 60-second interval is the established duration to safely reset the cycle.