# SDR HYI2002F00004

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 19, 2002
- Submitted: March 27, 2002
- Operation: Air carrier
- Aircraft: [N770CA](https://openairdocs.org/aircraft/N770CA), registered now
- Make and model: Cessna 402C
- Registry model: [Cessna 402C](https://openairdocs.org/model/cessna-402c) (OpenAirDocs)
- Aircraft serial: 402C0432
- Engine: Cont TSIO520*
- System (JASC): [3110 · Instrument Panel](https://openairdocs.org/jasc/3110)
- Part: Master Switch
- Part number: CM358950
- Condition: Failed
- Location: Lt Swtch Panel
- Part time: 1,157 hours
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/HYI2002F00004

## Discrepancy

ON PREFLIGHT INSPECTION, AVIONICS SWITCH FAILED.  MAINTENANCE REPLACED THE SWITCH AND RETURNED AIRCRAFT TO SERVICE.

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