Service difficulty report · Bypass Valve · Boeing 767322

Difficulty date
July 11, 2012
Submitted
August 24, 2012
Operation
Air carrier
Aircraft
N672UA
Make and model
Boeing 767322
Aircraft serial
30027
Aircraft time
45,852 hours, 11,859 cycles
Engine
Pwa PW4056
Part
Bypass Valve
Condition
Leaking
Location
Fuel/Oil Cooler
Component
Fuel/Oil Cooler
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

FOUND FUEL-OIL DRIPPING FROM STRUT DRAIN NR 1 ENG. RAN NR 1 ENG FOUND FUEL OIL COOLER BYPASS VALVE LEAKING OUT OF LIMITS. REPLACED FUEL OIL COOLER AND FUEL OIL COOLER BYPASS VALVE.