# SDR 2002FA0001339

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 20, 2002
- Submitted: November 26, 2002
- Operation: General aviation
- Aircraft: [N20402](https://openairdocs.org/aircraft/N20402), registered now
- Make and model: Cessna 172M
- Registry model: [Cessna 172M](https://openairdocs.org/model/cessna-172m) (OpenAirDocs)
- Aircraft serial: 17261261
- Engine: Lyc O320*
- System (JASC): [3340 · Exterior Lighting](https://openairdocs.org/jasc/3340)
- Part: Switch
- Condition: Melted
- Location: Landing Light
- 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/2002FA0001339

## Discrepancy

INOPERATIVE LANDING LIGHT TRACED TO A MELTED SWITCH AND BURNED WIRES AT THE SWITCH.  PROBLEM TRACED TO FLIGHT SCHOOL USING LANDING LIGHT FULL TIME AS A RECOGNITION LIGHT.  SWITCH AND WIRING CANNOT STAND A CONTINUOUS 20 AMP LOAD OF THE 250 WATT LAMP.

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