# SDR HYIA20170614001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 12, 2017
- Submitted: June 14, 2017
- Operation: Air carrier
- Aircraft: [N57PB](https://openairdocs.org/aircraft/N57PB), registered now
- Make and model: Cessna 402C
- Registry model: [Cessna 402C](https://openairdocs.org/model/cessna-402c) (OpenAirDocs)
- Aircraft serial: 402C0300
- Aircraft time: 25,031 hours, 48,533 cycles
- System (JASC): [2450 · AC Power Distribution System](https://openairdocs.org/jasc/2450)
- Part: Circuit Breaker
- Part number: CM358950
- Part serial: 12062016A
- Condition: Failed
- Location: Avionics Buss
- Part time: 434 hours
- Stage of operation: CR
- How discovered: O
- Nature of condition: H
- Precautionary procedure: H
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/HYIA20170614001

## Discrepancy

PILOT REPORTED THE AVIONICS SWITCH BREAKER TRIPPED IN FLIGHT.  MAINTENANCE REMOVED A REPLACED THE AVIONICS BUSS CIRCUIT BREAKER AND OPERATIONALLY CHECKED OK WITH NO FURTHER ISSUES.

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