# SDR 99ZZZX4252

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 10, 1999
- Submitted: March 26, 2000
- Operation: General aviation
- Aircraft: [N26514](https://openairdocs.org/aircraft/N26514), registered now
- Make and model: Cessna 402C
- Registry model: [Cessna 402C](https://openairdocs.org/model/cessna-402c) (OpenAirDocs)
- Aircraft serial: 402C0344
- System (JASC): [2450 · AC Power Distribution System](https://openairdocs.org/jasc/2450)
- Part: Circuit Breaker
- Part number: CM358950
- Condition: Failed
- Location: Cockpit
- Stage of operation: NR
- Nature of condition: B, J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/99ZZZX4252

## Discrepancy

CREW DECLARED EMERGENCY EN ROUTE ACK/BOS WHEN SMOKE CAME FROM AFT SIDE PANEL AFTER RE-SETTING AVIONICS MASTER SWITCH, FOR AVIONICS FAILURE.  USING EMERGENCY AVIONIC SWITCH, RESUMED COMMUNICATIONS WITH BOS.  APPROACH, LANDED WITHOUT INCIDENT.  MAINTENANCE REPLACED AVIONICS MASTER SWITCH.  SYSTEM CHECKED OK.

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