# SDR 135375

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 15, 2007
- Submitted: October 21, 2007
- Operation: Air carrier
- Aircraft: [N375R](https://openairdocs.org/aircraft/N375R), registered now
- Make and model: Cessna 402C
- Registry model: [Cessna 402C](https://openairdocs.org/model/cessna-402c) (OpenAirDocs)
- Aircraft serial: 402C0468
- Aircraft time: 18,500 hours
- Engine: Cont TSIO520*
- System (JASC): [2460 · DC Power Distribution System](https://openairdocs.org/jasc/2460)
- Part: Master Switch
- Part number: CM358950
- Part serial: 0633N375R
- Condition: Inoperative
- Location: Cockpit
- Part time: 312 hours
- Stage of operation: CR
- How discovered: O
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/135375

## Discrepancy

AVIONICS MASTER SWITCH FAILED IN FLIGHT.  AIRCRAFT LANDED WITH NO FURTHER DIFFICULTIES.  MAINTENANCE REMOVED AND REPLACED THE AVIONICS MASTER SWITCH IAW AIRCRAFT MM.

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