SDR UALA2011090904866

Service difficulty report · Oil Tank · Boeing 777222

Difficulty date: September 6, 2011
Submitted: September 26, 2011
Operation: Air carrier
Aircraft: N781UA
Make and model: Boeing 777222
Aircraft serial: 26945
Aircraft time: 61,720 hours, 10,967 cycles
Engine: Pwa PW4077
Engine time: 55,543 hours, 10,056 cycles
System (JASC): 7261 · Turbine Engine Oil System
Part: Oil Tank
Part number: 71R01001
Condition: Leaking
Location: Nr 2 Engine
Stage of operation: IN
How discovered: O
Nature of condition: K
Precautionary procedure: O

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

What was found

NR 2 ENG S/N 777027, FOUND SIGN OF OIL LEAKAGE AT PRESSURE TUBE (LP36) MATING SURFACE WITH OIL TANK FLANGE. REPLACED STRAINER AY. RAN ENGINE, STILL LEAKING 2 DROPS PER MINUTE, WITHIN LIMITS. NEW OIL TANK EN ROUTE. PCN 223-7100, 1 EA, LUBE OIL TANK FROM SHOP D52. REMOVED AND REPLACED NR 2 ENGINE OIL TANK. LEAK CHECK GOOD.