# SDR 2017FA0000471

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 30, 2017
- Submitted: August 30, 2017
- Operation: General aviation
- Aircraft: [N3647D](https://openairdocs.org/aircraft/N3647D), registered now
- Make and model: Cessna 310
- Registry model: [Cessna 310](https://openairdocs.org/model/cessna-310) (OpenAirDocs)
- Aircraft serial: 35347
- Aircraft time: 3,848 hours
- Engine: Cont O470*
- System (JASC): [8097 · Engine Starting System Wiring](https://openairdocs.org/jasc/8097)
- Part: Relay
- Part number: 08504691
- Condition: Shorted
- Location: Starter
- Stage of operation: CR
- How discovered: O
- Nature of condition: H
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2017FA0000471

## Discrepancy

AIRCRAFT LOST ALL AVIONICS POWER WHILE IN LEVEL FLIGHT,  PILOT DECLARED EMERGENCY LANDING AND LANDED AIRCRAFT WITHOUT INCIDENT.  MECHANICS DETERMINED THAT THE STARTER RELAY SHORTED INTERNALLY CAUSING A SHORT THAT TOOK OUT THE AVIONICS BUSS CAUSING THE POWER LOSS. RELAY WAS REPLACED AND AIRCRAFT RETURNED TO AIRWORTHY CONDITION.

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