What was found
DURING CLIMB, THE NR 4 HYDRAULIC QUANTITY INDICATED ZERO. AIRCRAFT RETURNED TO MNL AND LANDED WITHOUT INCIDENT. REPLACED THE HYDRAULIC QUANTITY TRANSMITTER AND ENGINE DRIVEN HYDRAULIC PUMP. OPERATIONAL CHECK GOOD.
- Difficulty date
- May 26, 1999
- Submitted
- March 26, 2000
- Operation
- Air carrier
- Aircraft
- N629US
- Make and model
- Boeing 747251F
- Aircraft serial
- 22388
- System (JASC)
- 2913 · Hydraulic Pump (Electric/Engine), Main
- Part
- Pump
- Condition
- Malfunctioned
- Location
- Nr 4 Hyd Syst
- Stage of operation
- CL
- Nature of condition
- J
- Precautionary procedure
- A
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.