# SDR ASAA2021092336072

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 23, 2021
- Submitted: September 27, 2021
- Operation: Air carrier
- Aircraft: [N560AS](https://openairdocs.org/aircraft/N560AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35179
- Aircraft time: 55,440 hours, 16,596 cycles
- System (JASC): [2697 · Fire Protection System Wiring](https://openairdocs.org/jasc/2697)
- Part: Terminal
- Condition: Damaged
- Location: Nr 1 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/ASAA2021092336072

## Discrepancy

#1 ENG OVERHEAT TEST FAILED. GROUNDED - YES. REF B737-800 FIM 26-10 TASK 801 FOUND ENG 1 UPPER FAN DETECTOR FAULT. REF FIM 26-10 TASK 805 FOUND TERMINAL AT M1760 ENGINE CORE RIGHT FIRE DETECTOR ASSEMBLY. REPLACED WIRE HARNESS MW0325 REF B737-800 WDM ASA D280A120 REV 95. FAULT CLEARED PERFORMED OVERHEAT TEST AND A CHAN FUNCTION RESTORED.

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