# SDR ASAA2019012427936

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 24, 2019
- Submitted: January 29, 2019
- Operation: Air carrier
- Aircraft: [N563AS](https://openairdocs.org/aircraft/N563AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35180
- Aircraft time: 46,293 hours, 13,881 cycles
- System (JASC): [2611 · Smoke Detection](https://openairdocs.org/jasc/2611)
- Part: Smoke Detector
- Part number: 4735975
- Condition: Failed
- Location: Cargo Bay
- Stage of operation: TX
- How discovered: C
- Nature of condition: L
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2019012427936

## Discrepancy

AFT LOWER CARGO FIRE SWITCH LOOP A TEST INOP. GROUNDED - YES. REPLACED (3) SMOKE DETECTORS IN AFT CARGO PIT A SYS M2242, M2243, M2244 PER AMM 26-16-01-400-801. OPS CK PER AMM 26-16-00-730-801.

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