# SDR 2007UALA04423

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 27, 2007
- Submitted: October 30, 2007
- Operation: Air carrier
- Aircraft: N180UA
- Make and model: Boeing 747422
- Aircraft serial: 25224
- Aircraft time: 70,196 hours, 8,599 cycles
- Engine: Pwa PW4056
- System (JASC): [2611 · Smoke Detection](https://openairdocs.org/jasc/2611)
- Part: Smoke Detector
- Part number: 2156756
- Condition: Faulty
- Location: Cabin
- Stage of operation: IN
- How discovered: O
- Nature of condition: W
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2007UALA04423

## Discrepancy

MSG SMOKE DR 5 REST CAME ON.  SUSPECT FAULTY SMOKE DETECTOR.  REPLACED SMOKE DETECTOR ZONE 1A. AC OK FOR SERVICE.

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