# SDR SIMA201017204

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 18, 2010
- Submitted: June 21, 2010
- Operation: Air carrier
- Aircraft: [N515AE](https://openairdocs.org/aircraft/N515AE), registered now
- Make and model: Cndair CL6002C10
- Aircraft serial: 10121
- Aircraft time: 17,009 hours, 12,651 cycles
- System (JASC): [4960 · APU Controls](https://openairdocs.org/jasc/4960)
- Part: Switch
- Part number: W9003R
- Condition: Failed
- Location: Apu
- Stage of operation: TX
- How discovered: O
- Nature of condition: W, B
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SIMA201017204

## Discrepancy

FOR FLIGHT 3716 AFTER PUSHBACK THE AUXILLIARY POWER UNIT SHUTDOWN BY ITSELF AND SMOKE WAS REPORTED BY 2 PASSENGERS SITTING IN SEATS 18A AND 18B. THE AIRCRAFT WAS REMOVED FROM SERVICE. REMOVED AND REPLACED THE AFT AUXILLIARY POWER UNIT REMOTE SWITCH IAW AMM 4-43-03. THE OPERATIONAL TEST FOUND THE AUXILLIARY POWER UNIT OIL WAS OVERSERVICED. SERVICED THE AUXILLIARY POWER UNIT OIL IAW AMM 12-13-49. RAN THE AUXILLIARY POWER UNIT FOR 1 HOUR WITH NO SMOKE PRESENT. THE AIRCRAFT WAS RETURNED TO SERVICE.

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