# SDR SWAA115440

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 25, 2011
- Submitted: July 27, 2011
- Operation: Air carrier
- Aircraft: [N335SW](https://openairdocs.org/aircraft/N335SW), registered now
- Make and model: Boeing 737-3H4
- Registry model: [Boeing 737-3H4](https://openairdocs.org/model/boeing-737-3h4) (OpenAirDocs)
- Aircraft serial: 23939
- Aircraft time: 75,069 hours, 66,648 cycles
- System (JASC): [2611 · Smoke Detection](https://openairdocs.org/jasc/2611)
- Part: Smoke Detector
- Part number: 100064901
- Condition: Faulty
- Location: Cargo Bay
- Stage of operation: UK
- 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/SWAA115440

## Discrepancy

DIVERSION -  AT 37,000 FEET AFT CARGO FIRE LIGHT ILLUMINATED.  AFTER CLEARING MASTER FIRE WARNING, LIGHT WENT OUT, SYSTEM TEST OK.  UPON DISCHARGING FIRE FIRE BOTTLES, AFT CARGO FIRE LIGHT RE-ILLUMINATED, THEN WHEN OUT.  INSPECTED FWD AND AFT CARGO COMPARTMENTS, NO SIGNS OF FIRE.  REMOVED AND REPLACED AFT CARGO SMOKE DETECTORS PER MM.

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