What is the minimum PSI for checking fuel pressure?

The minimum PSI for checking fuel pressure being 20 PSI is based on the operational requirements of the Super Hornet's fuel system. The fuel pressure must be sufficient to ensure proper fuel flow to the engines, which is critical for their performance and reliability. At 20 PSI, the system can maintain the necessary pressure to ensure efficient atomization of the fuel, enabling optimal combustion and engine performance.

This pressure threshold is crucial as it falls within the acceptable range for the fuel delivery system designed for the aircraft's specific engines. Maintaining this minimum pressure helps to avoid issues such as fuel starvation or engine flameout, which can result from insufficient fuel delivery.

Pressure values above this point can be managed but can also lead to unnecessary stress on the system components. Thus, understanding that 20 PSI is the baseline for correct operation is vital for anyone responsible for monitoring or maintaining the aircraft's readiness.