SDR 2007UALA01873

Service difficulty report · Fuel · Boeing 767322

Difficulty date: June 6, 2007
Submitted: June 14, 2007
Operation: Air carrier
Aircraft: N642UA
Make and model: Boeing 767322
Aircraft serial: 25092
Aircraft time: 69,598 hours, 11,303 cycles
Engine: Pwa PW4060
System (JASC): 2820 · Aircraft Fuel Distribution System
Part: Fuel
Condition: Leaking
Location: Rt Engine
Stage of operation: IN
How discovered: V
Nature of condition: O
Precautionary procedure: K

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

NOTICED DURING WALKAROUND INSPECTION RUNNING FUEL LEAK OUT OF UPPER PYLON AREA ON RIGHT ENGINE. [07-31-07] FOUND O-RING ON COUPLING "AS" REF IPC 28-22-07 PAGE17 SPLIT IN TWO PIECES. PACKING WAS WRO INSTALLED REF IPC.FOUND O-RING BETWEEN COUPLING NUT AND ONE RETAINING RING INSTALLED INSTEAD OF IN BETWEEN BOTH RETAINING RINGS. REPLACED PN:MS29513-330 AT FRONT SPAR MAIN FEED LINE COUPLING. LEAK CHECK SATIS. SUSPECT HEAT/COLD CYCLE, VIBRATION & SUBSEQUENT TIGHTENING CAUSED O-RING TO SPLIT.