# SDR BSYA2011020

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 19, 2011
- Submitted: May 2, 2011
- Operation: Air carrier
- Aircraft: [N3590D](https://openairdocs.org/aircraft/N3590D), registered now
- Make and model: Piper PA-31-350
- Registry model: [Piper PA-31-350](https://openairdocs.org/model/piper-pa-31-350) (OpenAirDocs)
- Aircraft serial: 8052144
- Aircraft time: 17,573 hours
- System (JASC): [3400 · Navigation System](https://openairdocs.org/jasc/3400)
- Part: Master Switch
- Part number: MTL206N
- Condition: Failed
- Location: Cockpit
- Stage of operation: CL
- How discovered: O
- Nature of condition: S
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/BSYA2011020

## Discrepancy

SHORTLY AFTER TAKEOFF OUT OF BKL AIRCRAFT LOST ALL AVIONICS, RETURNED TO BKL.  REMOVED AND REPLACED DEFECTIVE AVIONICS MASTER SWITCH, OPS CHECKED GOOD.

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