What was found
ON TAXI OUT, NR 1 ADP INOP, PRESSURE FLUCTUATION 0 TO 2500 PSI, RETURNED TO BLOCKS. CLEANED FILTERS, RESET OVERSPEED SWITCH AND LUBED REGULATOR SHUTOFF VALVE AND OPERATIONAL CHECK GOOD IAW MM 29-11-05.
- Difficulty date
- June 20, 1996
- Submitted
- March 26, 2000
- Operation
- Air carrier
- Aircraft
- N850FT
- Make and model
- Boeing 747122
- Aircraft serial
- 19755
- System (JASC)
- 2923 · Hydraulic Pump, Auxiliary
- Part
- Air Driven Pump
- Condition
- Press Flux
- Location
- Nr 1 Engine
- Stage of operation
- TX
- Nature of condition
- J
- Precautionary procedure
- D
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.