What is the minimum required APU pressure for brake riding?

The minimum required Auxiliary Power Unit (APU) pressure for brake riding is 2900 PSI. This specification is crucial as it ensures the hydraulic system has sufficient pressure to operate the braking systems effectively. Operating at this minimum pressure provides the necessary force to control the aircraft on the ground, especially during taxiing and when performing maintenance checks that involve the brakes.

Maintaining the correct APU pressure is vital for safety and operational readiness. If the pressure is below the required level, the braking system may not function correctly, which could lead to unsafe conditions while the aircraft is maneuvering on the ground. Therefore, ensuring that the APU pressure meets or exceeds this minimum standard of 2900 PSI is essential for the safety and efficiency of ground operations.