# SDR ASAA2019063029905

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 30, 2019
- Submitted: July 5, 2019
- Operation: Air carrier
- Aircraft: [N453AS](https://openairdocs.org/aircraft/N453AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 36354
- Aircraft time: 21,552 hours, 6,991 cycles
- System (JASC): [2697 · Fire Protection System Wiring](https://openairdocs.org/jasc/2697)
- Part: Wire Harness
- Part number: CA24402
- Condition: Broken
- Location: Nr 2 Engine
- Stage of operation: TX
- How discovered: O
- Nature of condition: N
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2019063029905

## Discrepancy

FIRE DETECTION FAULT NOTED ON PREFLIGHT. GROUNDED - YES. FOUND #2 ENGINE OVERHEAT LIGHT AND HANDLE LIGHT NOT ILLUMINATING DURING TEST.  CYCLE A/C POWER REF AMM 20-60-99. A LOOP TEST NORMAL. B LOOP INOP. ENGINE APU FIRE BITE SHOWS #2 ENGINE LOOP B RIGHT CORE FAULT. FOUND BROKEN FIRE HARNESS AT HERMETICAL LUG FOR B SIDE. REMOVED AND REPLACED RIGHT CORE HARNESS IAW AMM 26-11-01. OPS CHECKS GOOD IAW AMM 26-11-00. ETOPS GROUND VERIFICATION GOOD.

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