# SDR 2002FA0000112

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 27, 2001
- Submitted: December 27, 2001
- Operation: General aviation
- Make and model: Cessna 172S
- Registry model: [Cessna 172S](https://openairdocs.org/model/cessna-172s) (OpenAirDocs)
- Aircraft serial: 172S8135
- Aircraft time: 1,429 hours
- System (JASC): [3340 · Exterior Lighting](https://openairdocs.org/jasc/3340)
- Part: Switch
- Part number: W31X100010
- Condition: Failed
- Location: Instrument Panel
- Part time: 1,429 hours
- Stage of operation: IN
- How discovered: C
- Nature of condition: L
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2002FA0000112

## Discrepancy

PRE-RUN FOR MAINTENANCE FOUND TAXI LIGHT ON WITH SWITCH IN THE OFF POSITION.  MAINTENANCE FOUND TAXI LIGHT SWITCH FAILED IN THE ON POSITION.  REPLACED SWITCH AND FUNCTIONAL CHECKED SAT.

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