SDR UALA2010102904007

Service difficulty report · O-Ring · Boeing 767322

Difficulty date: October 28, 2010
Submitted: November 17, 2010
Operation: Air carrier
Aircraft: N668UA
Make and model: Boeing 767322
Aircraft serial: 30024
Aircraft time: 41,261 hours, 11,145 cycles
Engine: Pwa PW4056
System (JASC): 7310 · Engine Fuel Distribution
Part: O-Ring
Condition: Leaking
Location: Nr 1 Fuel Line
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

NR 1 ENG STRUT DRAIN HAS FUEL LEAKING AT ENG SHUTDOWN. FOUND MAIN FUEL LINE COUPLING ABOVE NR 1 ENG FIREWALL IS LEAKING FUEL. DISASSEMBLED NR 1 ENG. FWD MOST FUEL LINE COUPLING INSIDE PYLON IMMEDIATELY ABOVE FIREWALL, FOUND WEAR DAMAGE ON LINE UNDER UPPER HALF OF COUPLING ON INBOARD SIDE. REMOVED FUEL LINE. REMOVED AND REINSTALLED FUEL LINE. REPLACED O-RINGS ON FUEL LINE COUPLING ABOVE NR 1 FIREWALL. OP AND LEAK CHECKS GOOD.