# SDR ASAA2021073135587

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 31, 2021
- Submitted: August 10, 2021
- Operation: Air carrier
- Aircraft: [N560AS](https://openairdocs.org/aircraft/N560AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35179
- Aircraft time: 54,975 hours, 16,426 cycles
- System (JASC): [2611 · Smoke Detection](https://openairdocs.org/jasc/2611)
- Part: Fire Loop
- Part number: 90201801
- Condition: Faulted
- Location: Nr 1 Engine
- Stage of operation: NR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2021073135587

## Discrepancy

#1 ENGINE OVHT/DET "A" LOOP "FAULT" LIGHT ILLUMINATES. GROUNDED - YES. DUE TO HISTORY AND PREVIOUS PART REPLACEMENTS, REMOVED AND REPLACED ALL 4 #1 ENGINE FIRE DETECTION ASSEMBLIES REF B737-800 AMM 26-11-01. OP CHECK GOOD REF AMM 26-11-00. ETOPS GROUND VERIFICATION SUCCESSFUL.

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