# SDR UIEA2022051200457

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 12, 2022
- Submitted: May 13, 2022
- Operation: Air carrier
- Aircraft: [N451PA](https://openairdocs.org/aircraft/N451PA), registered now
- Make and model: Boeing 747-46NF
- Registry model: [Boeing 747-46NF](https://openairdocs.org/model/boeing-747-46nf) (OpenAirDocs)
- Aircraft serial: 30809
- Aircraft time: 15,093 cycles
- System (JASC): [2612 · Fire Detection](https://openairdocs.org/jasc/2612)
- Part: Fire Detector
- Condition: Warning Message
- Stage of operation: CR
- How discovered: O
- Nature of condition: J, N
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UIEA2022051200457

## Discrepancy

FIRE MAIN DECK AFT EICAS WARNING MESSAGE INTERROGATED CMC. FOUND MAIN DECK ZONE 12 FIRE DETECTOR LOOP A& B FAIL. PERFORMED FIRE TEST IAW AMM 26-14-00/501. TEST PASSED. MESSAGE CLEARED, NO FAULTS PRESENT.

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