# SDR SWAA092309

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 13, 2009
- Submitted: April 13, 2009
- Operation: Air carrier
- Aircraft: N664WN
- Make and model: Boeing 737-3Y0
- Registry model: [Boeing 737-3Y0](https://openairdocs.org/model/boeing-737-3y0) (OpenAirDocs)
- Aircraft serial: 23495
- Aircraft time: 72,347 hours, 55,469 cycles
- System (JASC): [2612 · Fire Detection](https://openairdocs.org/jasc/2612)
- Part: Control Unit
- Part number: 342004091
- Part serial: 03948E1
- Condition: Faulty
- Location: Aft 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/SWAA092309

## Discrepancy

DIVERSION, DISCHARGED AFT CARGO FIRE BOTTLE DUE TO FALSE FIRE WARNING INDICATION.  FOUND SCU FAILED.  REMOVED AND REPLACED SCU PER MM.

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