# SDR ASAA2022050638243

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 6, 2022
- Submitted: May 10, 2022
- Operation: Air carrier
- Aircraft: [N408AS](https://openairdocs.org/aircraft/N408AS), registered now
- Make and model: Boeing 737-900ER
- Registry model: [Boeing 737-900ER](https://openairdocs.org/model/boeing-737-900er) (OpenAirDocs)
- Aircraft serial: 41732
- Aircraft time: 34,424 hours, 10,926 cycles
- System (JASC): [2610 · Detection System](https://openairdocs.org/jasc/2610)
- Part: Loop
- Condition: Inoperative
- Stage of operation: IN
- How discovered: O
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2022050638243

## Discrepancy

#1 ENG FIRE DETECTION LOOP B INOP. GROUNDED - YES. ACCOMPLISHED B737-900 FIM 26-10 TASK 805, FOUND FAN FIRE DETECTION HARNESS MW0316 BAD, REMOVED AND REPLACED MW0316, FAN FIRE DETECTION HARNESS REF AMM 26-11-02/401. #1 ENGINE FIRE DETECTION OPERATIONAL TEST NORMAL. ETOPS GROUND VERIFICATION TEST SUCCESSFUL.

---
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.