# SDR 2024FA0000703

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 9, 2024
- Submitted: September 9, 2024
- Operation: General aviation
- Aircraft: [N2472U](https://openairdocs.org/aircraft/N2472U), registered now
- Make and model: Cessna 172S
- Registry model: [Cessna 172S](https://openairdocs.org/model/cessna-172s) (OpenAirDocs)
- Aircraft serial: 172S10074
- Aircraft time: 9,107 hours
- System (JASC): [2200 · Auto Flight System](https://openairdocs.org/jasc/2200)
- Part: Switch
- Part number: S28705
- Condition: Defective
- Location: Autopilot
- Stage of operation: CR
- How discovered: O
- Nature of condition: B
- Precautionary procedure: B
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2024FA0000703

## Discrepancy

IN FLIGHT PILOT NOTICED SMOKE TRAIL COMING FROM THE YOKE AND A ELECTRICAL BURNING SMELL. DISCONNECTED THE AUTO PILOT AND PERFORMED AN EMERGENCY LANDING AT KTTN.

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