# SDR VNAA2018010411101

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 4, 2018
- Submitted: January 7, 2018
- Operation: Air carrier
- Aircraft: [N573NN](https://openairdocs.org/aircraft/N573NN), registered now
- Make and model: Cndair CL6002D24
- Aircraft serial: 15362
- Aircraft time: 6,760 hours, 6,179 cycles
- System (JASC): [4997 · APU System Wiring](https://openairdocs.org/jasc/4997)
- Part: Wire
- Condition: Burned
- Location: Apu Area
- Stage of operation: TX
- How discovered: O
- Nature of condition: B, J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/VNAA2018010411101

## Discrepancy

AFTER DEFERRING THE APU DOOR OPEN, DURING THE APU START, BLUE SMOKE WAS REPORTED IN THE COCKPIT ALONG WITH AN APU FIRE 'W' MESSAGE. ON INSPECTION, BURNED & MELTED WIRING WAS FOUND AROUND THE APU,  BUT WAS CONTAINED TO JUST THE APU AREA.  MX R & R THE APU AND APU FIRE BOTTLE. NO OTHER DEFECTS NOTED.

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