What was found
DURING CRUISE, THE NR 4 HYDRAULIC SYSTEM INDICATED A LOSS OF FLUID AND PRESSURE. AIRCRAFT DIVERTED TO MSP AND LANDED WITHOUT INCIDENT. REPLACED THE NR 4 ENGINE DRIVEN PUMP, OPERATIONAL CHECK GOOD.
- Difficulty date
- September 2, 1997
- Submitted
- March 26, 2000
- Operation
- Air carrier
- Aircraft
- N625US
- Make and model
- Boeing 747251B
- Aircraft serial
- 21707
- System (JASC)
- 2913 · Hydraulic Pump (Electric/Engine), Main
- Part
- Pump
- Part number
- 3508806
- Condition
- Leaking
- Location
- Nr 4 Hyd Syst
- Part time
- 30,538 hours
- Stage of operation
- CR
- Nature of condition
- K, J
- Precautionary procedure
- A
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.