# SDR ASAA2021100536214

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 5, 2021
- Submitted: October 8, 2021
- Operation: Air carrier
- Aircraft: [N508AS](https://openairdocs.org/aircraft/N508AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35691
- Aircraft time: 48,050 hours, 14,167 cycles
- System (JASC): [2613 · Overheat Detection](https://openairdocs.org/jasc/2613)
- Part: Fire Detector
- Part number: 4735975
- Condition: No Test
- Location: Fwd Cargo Compt
- Stage of operation: IN
- 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/ASAA2021100536214

## Discrepancy

DURING CARGO FIRE TEST, THE FORWARD ARM LIGHT WOULD NOT ILLUMINATE AND THE DETECTOR FAULT LIGHT DID ILLUMINATE. GROUNDED - YES. REMOVED & REPLACED FWD CARGO A1 & A2 DETECTORS. OPS CK GOOD. REF B737-800 AMM 26-16-01.

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