- Aircraft configuration prior to reset:
On ground.
Circuit breakers to reset:
Steps to clear warning:To clear, run engines or pressurize hydraulics
reservoirs with APU air. If no help, check the reservoir gauge. If still low, service it manually with N2 to 45 PSI. If no help, cycle circuit breakers.
Reset duration:10 seconds.
Results of power up test or reset:Pass: Fault clears.
Fail: Fault remains.
Notes:This fault normally occurs after working on hydraulic system.All 3 systems pressure switches are set at 40psi. The blue system has an additional press switch set at 45PSI displayed on ground only. Remember some A/C have a APU boost setting.
Sign off:AMM29-14-00-720-001.
Applicable deferrals:MEL29-30-04A RSVR LO AIR PRESSURE.
320 Resets