# SDR ASAA2021121836966

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 18, 2021
- Submitted: December 23, 2021
- Operation: Air carrier
- Aircraft: [N569AS](https://openairdocs.org/aircraft/N569AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35184
- Aircraft time: 53,824 hours, 16,181 cycles
- System (JASC): [2697 · Fire Protection System Wiring](https://openairdocs.org/jasc/2697)
- Part: Wire Harness
- Part number: 3250276060
- Condition: Failed
- Location: Nr 2 Fire Detect
- 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/ASAA2021121836966

## Discrepancy

#2 ENGINE FIRE LIGHT DOES NOT ILLUMINATE ON TEST. GROUNDED - YES.  REPLACED ENGINE CORE DETECTION HARNESS MW0326 WITH SERVICABLE UNIT. ENG FIRE DETECTION OPS CHECKS OK. REF B737-800 AMM 26-11-02, 26-11-00, AND ASA MAINTENANCE PROGRAM 05-07-01, TABLE 3, ITEM 7.

---
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.