# SDR EPUA20150515001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 15, 2015
- Submitted: May 20, 2015
- Operation: Air carrier
- Aircraft: [N3516A](https://openairdocs.org/aircraft/N3516A), registered now
- Make and model: Piper PA-31-350
- Registry model: [Piper PA-31-350](https://openairdocs.org/model/piper-pa-31-350) (OpenAirDocs)
- Aircraft serial: 317952106
- Aircraft time: 22,316 hours
- System (JASC): [2140 · Heating System](https://openairdocs.org/jasc/2140)
- Part: Switch
- Part number: 4766408
- Condition: Burned
- Location: Heater System
- Stage of operation: NR
- How discovered: O
- Nature of condition: B
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/EPUA20150515001

## Discrepancy

UPON LANDING PILOT NOTICED SOME SMOKE IN THE CABIN.  INSPECTED THE ACFT & DETERMINED THAT THE CIRCULATION BLOWER SWITCH FOR THE HEATER SYS HAD A BURNT TERMINAL.  REPLACED THE DEFECTIVE SWITCH & RING TERMINAL.

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