# SDR 2015FA0000389

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 8, 2015
- Submitted: August 20, 2015
- Operation: General aviation
- Aircraft: [N8119H](https://openairdocs.org/aircraft/N8119H), registered now
- Make and model: Piper PA-28-161
- Registry model: [Piper PA-28-161](https://openairdocs.org/model/piper-pa-28-161) (OpenAirDocs)
- Aircraft serial: 288016027
- Engine: Lyc O320*
- System (JASC): [7414 · Magneto/Distributor](https://openairdocs.org/jasc/7414)
- Part: Shaft
- Part number: M3548
- Condition: Sheared
- Location: Magneto Rotor
- Component: Magneto, Champion
- Component part number: 4370
- Stage of operation: CR
- How discovered: O
- Nature of condition: R
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2015FA0000389

## Discrepancy

THE ROTOR SHAFT THAT HOLDS THE GEAR ON ROTOR, PN: M3548 SHEARED OFF AT THE BASE OF THE ROTOR SHAFT.  THIS RESULTED IN THE GEAR JAMMING UP INSIDE THE MAGNETO, WHICH ULTIMATELY LED TO THE FAILURE OF THE MAGNETO.

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