# SDR ASAA2015053011904

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 30, 2015
- Submitted: June 2, 2015
- Operation: Air carrier
- Aircraft: [N440AS](https://openairdocs.org/aircraft/N440AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 41705
- Aircraft time: 6,197 hours, 2,025 cycles
- System (JASC): [2697 · Fire Protection System Wiring](https://openairdocs.org/jasc/2697)
- Part: Wire Harness
- Part number: 3250276060
- Condition: Broken
- Location: Nr 1 Engine
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2015053011904

## Discrepancy

NR 1 OVERHEAT TEST SYSTEM, FAULT IN B LOOP.  ACFT GROUNDED.  DUPLICATED DEFECT. FOUND NR 1 ENGINE LT CORE UPPER TERMINAL END BROKEN.  REPLACED NR 1 ENGINE LT CORE MW0326 B LOOP FIRE DETECTOR HARNESS, REF MM:26-11-02, OPS CK NORMAL.

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