What was found
DURING GROUND OPERATION, THE APU FIRE WARNING ACTIVATED. FLIGHT CREW FOLLOWED COCKPIT OPERATING MANUAL PROCEDURES AND DISCHARGED THE FIRE BOTTLE. REPLACED PACKING ON THE AIR INLET ANTI-ICE DUCT, OPERATIONAL CHECK GOOD.
- Difficulty date
- June 11, 1997
- Submitted
- March 26, 2000
- Operation
- Air carrier
- Aircraft
- N639US
- Make and model
- Boeing 747251F
- Aircraft serial
- 23887
- System (JASC)
- 4950 · APU Bleed Air System
- Part
- Packing
- Condition
- Leaking
- Location
- Apu Duct
- Stage of operation
- TX
- Nature of condition
- J
- Precautionary procedure
- F
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.