How long do both center tank pumps run after each engine reaches idle if there is fuel in the tank and the fuel MODE SEL switch is in AUTO?

How long do both center tank pumps run after each engine reaches idle if there is fuel in the tank and the fuel MODE SEL switch is in AUTO?

• A. 1 minute
• B. 2 minutes
• C. 5 minutes
• D. 10 minutes

Answer: (B)

When the fuel MODE SEL switch is set to AUTO and both center tank pumps are operating with fuel available in the tank, the system is designed to maintain fuel availability and balance within the aircraft. After each engine reaches idle, both center tank pumps will continue to run for a duration of 2 minutes. This ensures that any residual fuel is effectively utilized and that there's a controlled transfer of fuel from the center tank to the engines, supporting optimal performance and safety. This operational protocol helps to prevent fuel starvation while allowing for efficient management of the aircraft's fuel resources during flight operations.

When the fuel MODE SEL switch is set to AUTO and both center tank pumps are operating with fuel available in the tank, the system is designed to maintain fuel availability and balance within the aircraft. After each engine reaches idle, both center tank pumps will continue to run for a duration of 2 minutes. This ensures that any residual fuel is effectively utilized and that there's a controlled transfer of fuel from the center tank to the engines, supporting optimal performance and safety. This operational protocol helps to prevent fuel starvation while allowing for efficient management of the aircraft's fuel resources during flight operations.