What was found
CMC EQUIPMENT COOLING DETECTOR TEST FAILED. MSG 21501. E&E COOLING SMOKE DETECTOR FAIL. REMOVED AND REPLACED E&E SMOKE DETECTOR PER MM. CMC GROUND TEST OP CHECKS NORMAL.
- Difficulty date
- July 17, 2011
- Submitted
- August 12, 2011
- Operation
- Air carrier
- Aircraft
- N179UA
- Make and model
- Boeing 747422
- Aircraft serial
- 25158
- Aircraft time
- 84,596 hours, 10,289 cycles
- Engine
- Pwa PW4056
- System (JASC)
- 2612 · Fire Detection
- Part
- Smoke Detector
- Part number
- 2156756A
- Condition
- Failed
- Location
- E&E Bay
- Stage of operation
- IN
- How discovered
- C
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.