SDR UALA2011112906551

Service difficulty report · O-Ring · Boeing 777222

Difficulty date: November 28, 2011
Submitted: November 30, 2011
Operation: Air carrier
Aircraft: N206UA
Make and model: Boeing 777222
Aircraft serial: 30212
Aircraft time: 55,859 hours, 8,038 cycles
Engine: Pwa PW40903
System (JASC): 2820 · Aircraft Fuel Distribution System
Part: O-Ring
Condition: Damaged
Location: Fuel System
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.

What was found

EVIDENCE OF FUEL LEAK AT COUPLING IN PYLON JUST ABOVE J BOX, VIEWED THRU 432BR. REMOVED BONDING WIRE AND OLD COUPLING. NEW O-RINGS INSTALLED. NEED TO RE-ASSEMBLE COUPLING ASSY. RE-ASSEMBLE COUPLING ASSY AND REINSTALL BONDING WIRE PER MM. NR 1 ENGINE STRUT DRAIN LEAKING FUEL-STEADY STREAM. LEAK FOUND AT COUPLING IN PYLON JUST ABOVE J-BOX. REPLACED O-RING AND RE-INSTALLED COUPLING PER MM. LEAK CHECK AND ENGINE RUN, NO MORE LEAK FOUND.