What was found
LOSS OF OIL QUANTITY NR 4 ENGINE ON TAXI OUT. FOUND DRAIN CAP SEAL LEAKING ON KIT INSTALLED FOR ENGINE DRIVEN HYDRAULIC PUMP DEACTIVATION PER MEL 29-01 PER MAINTENANCE MANUAL 29-11-05. REPLACED CAP LEAK CHECK OK.
- Difficulty date
- December 23, 1996
- Submitted
- March 26, 2000
- Operation
- Air carrier
- Aircraft
- N853FT
- Make and model
- Boeing 747122
- Aircraft serial
- 19753
- Engine
- Pwa JT9D7A
- System (JASC)
- 7261 · Turbine Engine Oil System
- Part
- Drain Cap
- Condition
- Bad Seal
- Location
- Nr 4 Engine
- Stage of operation
- TX
- Nature of condition
- K, J
- Precautionary procedure
- D
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.