What was found
DURING CRUISE (AMS), THE NR 4 HYDRAULIC SYSTEM LOST FLUID. AIRCRAFT CONTINUED TO DTW AND LANDED WITHOUT INCIDENT. REPLACED THE O-RING ON THE PLUG FOR THE HYDRAULIC RESERVOIR PRESSURE FILTER MODULE, OPERATIONAL CHECK GOOD.
- Difficulty date
- May 11, 1999
- Submitted
- March 26, 2000
- Operation
- Air carrier
- Aircraft
- N664US
- Make and model
- Boeing 747451
- Aircraft serial
- 23819
- System (JASC)
- 2910 · Hydraulic System, Main
- Part
- O Ring
- Condition
- Leaking
- Location
- Nr 4 Hyd Syst
- Stage of operation
- CR
- Nature of condition
- K
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.