Service difficulty report · O-Ring · Boeing 777222

Difficulty date
March 31, 2010
Submitted
April 7, 2010
Operation
Air carrier
Aircraft
N226UA
Make and model
Boeing 777222
Aircraft serial
30226
Aircraft time
33,730 hours, 4,138 cycles
Engine
Pwa PW40903
Engine time
23,533 hours, 29,286 cycles
Part
O-Ring
Condition
Damaged
Location
Oil System
Stage of operation
IN
How discovered
O
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

OIL LEAK ON NR 1 ENGINE LT SIDE AT AFT SIDE OF FUEL OIL COOLER. FOUND NR 2 BEARING LAST CHANCE FILTER HOUSING LEAKING AT PARTING SURFACE. REPLACED 'O' RING FOR FILTER. LEAK CHECK OF