# SDR ASAA2019071730111

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 17, 2019
- Submitted: July 30, 2019
- Operation: Air carrier
- Aircraft: [N495AS](https://openairdocs.org/aircraft/N495AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 41728
- Aircraft time: 13,639 hours, 4,412 cycles
- System (JASC): [2697 · Fire Protection System Wiring](https://openairdocs.org/jasc/2697)
- Part: Wire Harness
- Part number: CA24402
- Condition: Failed
- Location: Nr 2 Engine
- Stage of operation: TX
- 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/ASAA2019071730111

## Discrepancy

NR 2 ENGINE FIRE SWITCH DOES NOT ILLUMINATE WHEN OVERHEAT/FIRE POSITION IS SELECTED WITH THE TEST SWITCH. GROUNDED - YES. REMOVED & REPLACED FIRE DETECTION HARNESS, MW0326, REF AMM 26-11-02-400-802. ACCOMPLISHED ENGINE FIRE DETECTION OPERATIONAL TEST REF AMM 26-11-00-710-801. OPS CK GOOD. GROUND VERIFICATION SUCCESSFUL.

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