# SDR MASA200400475

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 26, 2004
- Submitted: October 6, 2004
- Operation: Air carrier
- Aircraft: [N850MJ](https://openairdocs.org/aircraft/N850MJ), registered now
- Make and model: Emb EMB-145LR
- Registry model: [EMB EMB-145LR](https://openairdocs.org/model/embraer-emb-145lr) (OpenAirDocs)
- Aircraft serial: 145568
- Aircraft time: 6,171 hours, 5,541 cycles
- System (JASC): [2611 · Smoke Detection](https://openairdocs.org/jasc/2611)
- Part: Smoke Detector
- Part number: FAU751A4
- Part serial: 41970
- Condition: Will Not Test
- Location: Lavatory
- Part time: 6,083 hours, 5,471 cycles
- Stage of operation: IN
- How discovered: 9
- Nature of condition: L
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/MASA200400475

## Discrepancy

THE LAV SMOKE DETECTOR WOULD NOT TEST.  MX REPLACED THE SMOKE DETECTOR AND THE SYSTEM TESTED NORMALLY.  THE A/C DEPARTED WITHOUT FURTHER INCIDENT.

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