What was found
NR 4 HYDRAULIC QUANTITY WENT TO ZERO IN CLIMB. FOUND HYDRAULIC LEAK ON NR 4 ENG EDP. REMOVED EDP AND INSTALLED HYDRAULIC PUMP FROM THE NR 3 ADP POSITION. OPS AND LEAK CHECK OK. NR 3 ADP DEACTIVATED PER MEL 29-2A.
- Difficulty date
- December 28, 2004
- Submitted
- December 29, 2004
- Operation
- Air carrier
- Aircraft
- N858FT
- Make and model
- Boeing 747123
- Aircraft serial
- 20109
- Aircraft time
- 78,486 hours, 18,683 cycles
- System (JASC)
- 2913 · Hydraulic Pump (Electric/Engine), Main
- Part
- Pump
- Part serial
- MX5192
- Condition
- Leaking
- Location
- Nr 4 Engine
- Stage of operation
- CL
- How discovered
- O
- Nature of condition
- K
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.