# SDR ASAA2017010519255

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 5, 2017
- Submitted: January 9, 2017
- Operation: Air carrier
- Aircraft: [N577AS](https://openairdocs.org/aircraft/N577AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35186
- Aircraft time: 37,499 hours, 11,136 cycles
- System (JASC): [2697 · Fire Protection System Wiring](https://openairdocs.org/jasc/2697)
- Part: Wire
- Condition: Broken
- Location: Fire Harness
- 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/ASAA2017010519255

## Discrepancy

NR 1 ENGINE FIRE LOOP TEST FAILED FOR LOOP A.  FAULT LIGHT AND NR 1 ENGINE FIRE LIGHT WOULD NOT ILLUMINATE DURING TEST.  ACFT GROUNDED.  DURING TROUBLESHOOTING FOUND A BROKEN WIRE OFF TERMINAL LUG AT M1760.   REPLACED THE TERMINAL LUG IAW SWPM. LEFT ENG FIRE DET SYS NOW OPS NORMAL. IAW AMM 26-11-00-410-801.

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