# SDR 2023FA0000414

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 12, 2023
- Submitted: August 14, 2023
- Operation: General aviation
- Aircraft: [N939FE](https://openairdocs.org/aircraft/N939FE), registered now
- Make and model: Cessna 208B
- Registry model: [Cessna 208B](https://openairdocs.org/model/cessna-208b) (OpenAirDocs)
- Aircraft serial: 208B0180
- Aircraft time: 18,878 hours, 15,730 cycles
- System (JASC): [3452 · ATC Transponder System](https://openairdocs.org/jasc/3452)
- Part: Transponder
- Part number: 0110045570
- Part serial: 84215034
- Condition: Defective
- Location: Control Panel
- Part time: 6,380 hours
- Stage of operation: CL
- How discovered: V
- Nature of condition: B
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2023FA0000414

## Discrepancy

PILOT OBSERVED SMOKE IN COCKPIT CAUSED BY FAULTY TRANSPONDER INSTALLED UNDER STC# SA01512WI-D 07/09/2010. FOUND BURNT CHIP ON CIRCUIT BOARD.

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