Service difficulty report · Fan · Boeing 747422

Difficulty date
August 12, 2001
Submitted
September 5, 2001
Operation
Air carrier
Aircraft
N183UA
Make and model
Boeing 747422
Aircraft serial
25379
Aircraft time
44,570 hours, 5,370 cycles
Engine
Pwa PW4056
Part
Fan
Condition
Failed
Location
Cabin
Stage of operation
CR
How discovered
O
Nature of condition
B, J
Precautionary procedure
H

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

What was found

ELECTRIC BURN ODOR IN CABIN FOLLOWED BY STATUS MSG "RECIRCULATING FAN UPPER L". TURNED OFF UPPER RECIRCULATING FANS AND ODOR DISSIPATED. PRESENT LEC FAULT MSG "FAIL-L WIRING FAIL". THE LEFT OVERHEAD RECIRCULATION FAN EXPERIENCED A BEARING FAILURE. FAN WAS REPLACED.