# SDR MV1R336K11024

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 24, 2011
- Submitted: January 26, 2011
- Operation: General aviation
- Aircraft: N39
- Make and model: Cvac 440
- Aircraft serial: 480
- Aircraft time: 21,841 hours, 15,023 cycles
- Engine: Allsn 501D13D
- System (JASC): [2997 · Hydraulic Power System Wiring](https://openairdocs.org/jasc/2997)
- Part: Circuit Breaker
- Part number: D6760135
- Condition: Failed
- Location: Hyd System
- Part time: 1,876 hours, 1,394 cycles
- Stage of operation: TX
- How discovered: O
- Nature of condition: B
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/MV1R336K11024

## Discrepancy

ON START UP, THE FLIGHT CREW APPLIED AC POWER TO ACFT AND TURNED AC HYD PUMP SWITCH ON.  A SMALL FLASH, THEN SMOKE EMITTED AT THE CIRCUIT BREAKER.  THE FORWARD FACE DISINTEGRATED INTO FRAGMENTS.

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