# SDR UIEA2025071500954

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 14, 2025
- Submitted: July 17, 2025
- Operation: Air carrier
- Aircraft: [N412MC](https://openairdocs.org/aircraft/N412MC), registered now
- Make and model: Boeing 747-47UF
- Registry model: [Boeing 747-47UF](https://openairdocs.org/model/boeing-747-47uf) (OpenAirDocs)
- Aircraft serial: 30559
- Aircraft time: 101,312 hours, 16,344 cycles
- System (JASC): [2611 · Smoke Detection](https://openairdocs.org/jasc/2611)
- Part: Smoke Detector
- Part number: 2156756A
- Part serial: 11643B
- Condition: False Activation
- Location: Zone 200
- 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/UIEA2025071500954

## Discrepancy

EQUIPMENT SMOKE STATUS MESSAGE AFTER EQUIPMENT COOLING MESSAGE.  REMOVED AND REPLACED EQUIPMENT COOLING SMOKE DETECTOR IAW AMM 26-16-51. PERFORMED GROUND TEST .</P> / <P>TEST PASSED MESSAGE CLEARED.

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