Service difficulty report · Pressure Switch · Boeing 747230B

Difficulty date
November 3, 2009
Submitted
November 5, 2009
Operation
Air carrier
Aircraft
N489EV
Make and model
Boeing 747230B
Aircraft serial
23393
Aircraft time
91,385 hours, 16,506 cycles
Engine
Ge CF650E2
Part
Pressure Switch
Condition
Malfunctioned
Location
Oil System
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

DURING CRUISE APPROX 7 HOURS INTO FLIGHT NR 2 ENGINE OIL FILTER BYPASS LIGHT ILLUMINATED FLASHING. RETARDED NR 2 THRUST LEVER, LIGHT CONTINUED TO FLASH. ACCOMPLISHED INFLIGHT ENGINE FAILURE AND SHUTDOWN PROCEDURE. FILTER BYPASS LIGHT REMAINED ON STEADY AFTER ENGINE SHUTDOWN. REMOVED AND REPLACED NR 2 ENGINE OIL FILTER BYPASS PRESSURE SWITCH IAW MM 73-35-01. OPS AND LEAK CHECK NORMAL.