# SDR SWAA2016072554222

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 22, 2016
- Submitted: July 26, 2016
- Operation: Air carrier
- Aircraft: N638SW
- Make and model: Boeing 737-3H4
- Registry model: [Boeing 737-3H4](https://openairdocs.org/model/boeing-737-3h4) (OpenAirDocs)
- Aircraft serial: 27711
- Aircraft time: 62,484 hours, 49,410 cycles
- System (JASC): [2612 · Fire Detection](https://openairdocs.org/jasc/2612)
- Part: Element
- Part number: 33007507
- Part serial: 34716B1
- Condition: Faulty
- Location: Apu
- Stage of operation: CL
- 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/SWAA2016072554222

## Discrepancy

AIR TURNBACK, DECLARED EMERGENCY APU FIRE ALARM AND LIGHT CAME ON DURING CLIMB PERFORMED CHECKLIST FIRED BOTTLE DECLARED AN EMERGENCY AND RETURNED TO THE FIELD.  R & R APU FIRE DETECTOR ELEMENT IAW AMM.

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