# SDR ASAA2022033037855

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 30, 2022
- Submitted: April 5, 2022
- Operation: Air carrier
- Aircraft: [N448AS](https://openairdocs.org/aircraft/N448AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 36356
- Aircraft time: 20,884 hours, 6,592 cycles
- System (JASC): [2611 · Smoke Detection](https://openairdocs.org/jasc/2611)
- Part: Fire Detector
- Part number: 902864
- Condition: Inoperative
- Location: #1 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/ASAA2022033037855

## Discrepancy

#1 ENGINE FIRE DETECTION LOOP A IS INOPERATIVE. ("A" LOOP DOESN'T TEST AND FAULT LIGHT ILLUMINATED). GROUNDED - YES. REF TSR711760, 2 DECTECTOR HARNESS & FAN LOOP ASSY REPLACED & OPS TEST NORMAL

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