# SDR UIEA2026080600684

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 7, 2026
- Submitted: August 7, 2026
- Operation: Air carrier
- Aircraft: [N496MC](https://openairdocs.org/aircraft/N496MC), registered now
- Make and model: Boeing 747-47UF
- Registry model: [Boeing 747-47UF](https://openairdocs.org/model/boeing-747-47uf) (OpenAirDocs)
- Aircraft serial: 29257
- Aircraft time: 105,571 hours, 17,762 cycles
- System (JASC): [2611 · Smoke Detection](https://openairdocs.org/jasc/2611)
- Part: Smoke Detector
- Part number: PU90461
- Part serial: 16670
- Condition: Activated
- Location: Crew Rest
- Stage of operation: LD
- How discovered: O
- Nature of condition: B
- Precautionary procedure: B
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UIEA2026080600684

## Discrepancy

SMOKE IN CREW REST EICAS AT 1955Z FOR ABOUT 5 MINS. SMOKE DISSIPATED AND EICAS DID NOT RETURN. REPLACED ALL PACK WATER SEPERATOR COALESCER BAGS IAW AMM 05-51-56 AND FIM 21-00 TASK 810. REPLACED CREW REST AREA SMOKE DETECTOR IAW AMM 26-14-51 AND 21-51-05. NO SMOKE, FUMES, OR ELECTRICAL FAULT IN THE CABIN NOTED.</P>)

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