# SDR HYI2001F00012

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 19, 2001
- Submitted: December 13, 2001
- Operation: Air carrier
- Aircraft: [N548GA](https://openairdocs.org/aircraft/N548GA), registered now
- Make and model: Cessna 402C
- Registry model: [Cessna 402C](https://openairdocs.org/model/cessna-402c) (OpenAirDocs)
- Aircraft serial: 402C0653
- Engine: Cont TSIO520*
- System (JASC): [2460 · DC Power Distribution System](https://openairdocs.org/jasc/2460)
- Part: Master Switch
- Part number: CM358950
- Condition: Failed
- Location: Inst Panel
- Part time: 1,000 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/HYI2001F00012

## Discrepancy

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

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