# SDR CA190311024

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 6, 2019
- Submitted: August 14, 2020
- Operation: General aviation
- Make and model: Cessna 172N
- Registry model: [Cessna 172N](https://openairdocs.org/model/cessna-172n) (OpenAirDocs)
- Aircraft time: 7,548 hours
- Engine: Lyc O320D2J
- System (JASC): [3340 · Exterior Lighting](https://openairdocs.org/jasc/3340)
- Part: Switch
- Part number: C9065
- Condition: Melted
- Location: Landing Light
- Part time: 1,804 hours
- Stage of operation: CR
- How discovered: O
- Nature of condition: M, B
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CA190311024

## Discrepancy

(CAN) DURING THE FLIGHT THE PILOT REPORTED SMOKE FROM UNDER THE INSTRUMENT PANEL. UPON INSPECTION IT WAS DISCOVERED THE LANDING LIGHT SWITCH HAD OVERHEATED, PARTIALLY MELTING.  THESE SWITCHES HAVE A MANDATORY REPLACEMENT LIFE OF 48 MONTHS. THE FAILED SWITCH WAS DUE TO FOR REPLACEMENT AUGUST 16, 2020 (TC# 20190311024)

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