Service difficulty report · Oil Filter · Boeing 747123F

Difficulty date
June 19, 2000
Submitted
June 22, 2000
Operation
Air carrier
Aircraft
N676UP
Make and model
Boeing 747123F
Aircraft serial
20101
Aircraft time
70,816 hours, 20,292 cycles
Engine
Pwa JT9D7AH
Part
Oil Filter
Part number
JT9D7AH
Part serial
P685950CN
Condition
Contaminated
Location
Nr 2 Engine
Stage of operation
CR
How discovered
O
Nature of condition
J
Precautionary procedure
E

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

What was found

INSPECTION TYPE:SP, NR 2 OIL FILTER BYPASS LIGHT ILLUMINATED IN FLIGHT. SHUTDOWN NR 2 ENGINE IAW CHECKLIST. OIL PRESSURE REMAINED ABOVE 5 PSI. ENTIRE TIME ENGINE WINDMILLED FOR 40 MINUTES AFTER SHUTDOWN. CHECKED CHIP DETECTORS, NO DEFECT. DRAINED OIL FROM GEARBOX, NO DEFECT DRAINED OIL FROM TANK, SOME CARBON. FOUND OIL FILTER FULL OF CARBON, REPLACED FILTER IAW 72-61-05. REPLACED OIL QTY TRANSMITTER IAW 79-31-01, REPLACED OIL FILTER DIFF PRESS WARNING SWITCH IAW 79-35 -01, REPLACED LOW PRESSURE WARNING SWITCH IAW 79-33-01.