# SDR UIEA2020123002633

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 30, 2020
- Submitted: December 31, 2020
- Operation: Air carrier
- Aircraft: [N492MC](https://openairdocs.org/aircraft/N492MC), registered now
- Make and model: Boeing 747-47UF
- Registry model: [Boeing 747-47UF](https://openairdocs.org/model/boeing-747-47uf) (OpenAirDocs)
- Aircraft serial: 29253
- Aircraft time: 93,046 hours, 16,085 cycles
- System (JASC): [2610 · Detection System](https://openairdocs.org/jasc/2610)
- Part: Smoke Warning
- Condition: False Activation
- Location: Lavatory
- Stage of operation: CL
- How discovered: 9
- Nature of condition: N
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UIEA2020123002633

## Discrepancy

LAV SMOKE SIREN STARTED AT 7000 FEET.  RESET AND PERFORMED OPERATIONAL CHECK, IAW AMM 26-13-00.  OPERATIONS NORMAL.

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