# SDR ASAA2021101236318

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 12, 2021
- Submitted: October 18, 2021
- Operation: Air carrier
- Aircraft: [N471AS](https://openairdocs.org/aircraft/N471AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 41703
- Aircraft time: 26,318 hours, 8,367 cycles
- System (JASC): [2612 · Fire Detection](https://openairdocs.org/jasc/2612)
- Part: Fire Detector
- Part number: 4735975
- Condition: Inoperative
- Location: Fwd Cargo
- Stage of operation: NR
- How discovered: 9
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2021101236318

## Discrepancy

DURING CARGO FIRE TEST DETECTOR FAULT LIGHT ILLUMINATED AND FWD CARGO, FIRE LIGHT DOES NOT LIGHT UP. GROUNDED - YES. REPLACED THE FWD CARGO SMOKE DETECTOR B1, OPS NORMAL. REF B737-900 AMM TASK 26-16-01-400-801.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.