What was found
ELECTRICAL BURNING ODOR WITH ASSOCIATED STATUS MESSAGE RECIRC FAN UPPER L DISPLAYED. THE UPPER RIGHT RECIRCULATION FAM MOTOR BEARINGS FAILED.THE RECIRCULATION FAN WAS REPLACED.
- Difficulty date
- November 28, 2003
- Submitted
- December 9, 2003
- Operation
- Air carrier
- Aircraft
- N181UA
- Make and model
- Boeing 747422
- Aircraft serial
- 25278
- Aircraft time
- 52,998 hours, 6,684 cycles
- Engine
- Pwa PW4056
- System (JASC)
- 2121 · Air Distribution Fan
- Part
- Fan
- Condition
- Odor
- Location
- Cabin
- Stage of operation
- NR
- How discovered
- 9
- Nature of condition
- B
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.