# SDR UIEA2012033000111

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 29, 2012
- Submitted: March 30, 2012
- Operation: Air carrier
- Aircraft: [N415MC](https://openairdocs.org/aircraft/N415MC), registered now
- Make and model: Boeing 747-47UF
- Registry model: [Boeing 747-47UF](https://openairdocs.org/model/boeing-747-47uf) (OpenAirDocs)
- Aircraft serial: 32837
- Aircraft time: 42,593 hours, 6,828 cycles
- System (JASC): [2611 · Smoke Detection](https://openairdocs.org/jasc/2611)
- Part: Smoke Detector
- Part number: 2156556
- Part serial: 166
- Condition: Faulted
- Location: Main Deck Cargo
- Stage of operation: CR
- How discovered: O
- Nature of condition: N
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UIEA2012033000111

## Discrepancy

FIRE MAIN DECK AFT AT 1:20 FROM AMS, VERIFIED PHYSICALLY THERE WAS NO FIRE.  EICAS FOLLOWED STATUS MESSAGES MAIN DECK CARGO 12 LP A, INDICATING A FALSE WARNING.  FOUND MAIN DECK CARGO SMOKE DETECTOR 12A AT FAULT, R & R RT SMOKE DETECTOR 12A IAW AMM 26-14-02, TESTED SATISFACTORY.

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