# SDR ASAA2021080835678

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 8, 2021
- Submitted: September 8, 2021
- Operation: Air carrier
- Aircraft: [N560AS](https://openairdocs.org/aircraft/N560AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35179
- Aircraft time: 55,042 hours, 16,456 cycles
- System (JASC): [2612 · Fire Detection](https://openairdocs.org/jasc/2612)
- Part: Wire Harness
- Part number: 3250273030
- Condition: No Test
- Location: Nr 1 Fire Loop
- 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/ASAA2021080835678

## Discrepancy

ENGINE #1 LOOP A ENG OVERHEAT WILL NOT TEST. GROUNDED - YES. FOLLOWED B737-800 FIM 26-10 TASK 805 FOR ENGINE- WIRING HARNESS/FIRE DETECTOR. FOUND INCONSISTENT READING BETWEEN CONNECTOR DP1501 AND DP1552. REMOVED AND REPLACED FAN FIRE DETECTION HARNESS REF B737-800 AMM 26-11-02-000/400-801. ACCOMPLISHED ENGINE FIRE DETECTION OPERATIONAL TEST REF AMM 26-11-00-710-801. NO FAULTS FOUND. ALL TESTS PASSED. ALL GROUND VERIFICATION TESTS SUCCESSFUL.

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