What was found
"DET FIRE-OHT 3" EICAS ADVISORY MESSAGE DISPLAYED. NR 3 ENGINE LOOP "A" AND "B" FAILURES FOR FIRE OR OVERHEAT. REPLACED WIRE HARNESS AT FWD LOWER SECTION FOR THE LOOP. FIRE AND OVERHEAT TEST FUNCTIONALLY DONE IAW AMM.
- Difficulty date
- August 16, 2013
- Submitted
- August 21, 2013
- Operation
- Air carrier
- Aircraft
- N117UA
- Make and model
- Boeing 747422
- Aircraft serial
- 28810
- Aircraft time
- 59,047 hours, 7,032 cycles
- Engine
- Pwa PW4056
- System (JASC)
- 2697 · Fire Protection System Wiring
- Part
- Wire Harness
- Condition
- Failed
- Location
- Fire Detection
- Stage of operation
- NR
- How discovered
- 9
- Nature of condition
- N
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.