# SDR Z5FA20111005001A

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 5, 2011
- Submitted: October 10, 2011
- Operation: Air carrier
- Aircraft: [N420CS](https://openairdocs.org/aircraft/N420CS), registered now
- Make and model: Cessna 525B
- Registry model: [Cessna 525B](https://openairdocs.org/model/cessna-525b) (OpenAirDocs)
- Aircraft serial: 525B0115
- Aircraft time: 4,508 hours, 3,312 cycles
- System (JASC): [2611 · Smoke Detection](https://openairdocs.org/jasc/2611)
- Part: Smoke Detector
- Part number: 47359717
- Part serial: 0253
- Condition: Defective
- Location: Cargo Bay
- Part time: 203 hours, 151 cycles
- Stage of operation: DE
- How discovered: O
- Nature of condition: N
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/Z5FA20111005001A

## Discrepancy

DURING DESCENT THE BAGGAGE SMOKE ANNUNCIATOR ILLUMINATED.  EMERGENCY CHECKLIST WAS FOLLOWED, AN EMERGENCY WAS DECLARED AND THE ACFT DIVERTED, LANDING WAS UNEVENTFUL.  MX TROUBLESHOT THE DISCREPANCY TO A FAULTY FORWARD SMOKE DETECTOR.  THE DETECTOR WAS REPLACED, OPS CHECKED OK. ACFT WAS RETURNED TO SERVICE.

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