What was found
HYD LEAK NOTICED DURING WALKROUND COMING FROM SAILBOAT AREA ON PYLON 1. INVESTIGATION REVEALED A CHAFED RETURN LINE AT A CLAMP. PIPE ASSY INSTALLED AND LEAK CHECK CARRIED OUT, NO LEAKS.
- Difficulty date
- May 25, 2013
- Submitted
- July 12, 2013
- Operation
- Air carrier
- Aircraft
- N179UA
- Make and model
- Boeing 747422
- Aircraft serial
- 25158
- Aircraft time
- 92,020 hours, 11,038 cycles
- Engine
- Pwa PW4056
- System (JASC)
- 2910 · Hydraulic System, Main
- Part
- Line
- Part number
- 272U1200459
- Condition
- Leaking
- Location
- Pylon 1
- Stage of operation
- IN
- How discovered
- V
- Nature of condition
- K
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.