# SDR ASAA2018031023869

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 10, 2018
- Submitted: March 14, 2018
- Operation: Air carrier
- Aircraft: [N479AS](https://openairdocs.org/aircraft/N479AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 60576
- Aircraft time: 10,753 hours, 3,581 cycles
- System (JASC): [4997 · APU System Wiring](https://openairdocs.org/jasc/4997)
- Part: Wire Harness
- Part number: 38884492
- Condition: Burned
- Location: Apu
- 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/ASAA2018031023869

## Discrepancy

ON THE APU, FOUND WIRES AT NR 1 EGT THERMOCOUPLE WERE BURNED. ACFT GROUNDED.   REMOVED AND REPLACED APU HARNESS IAW AMM 49-11-01-400-802. PERFORMED APU OPERATIONAL TEST IAW AMM 49-11-00-710-801. OPS CHECKED GOOD. PERFORMED APU BITE PROCEEDURE IAW AMM 49-61-00-700-801. NO FAULTS.

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