# SDR 2018FA0000381

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 21, 2018
- Submitted: September 21, 2018
- Operation: General aviation
- Aircraft: [N522ND](https://openairdocs.org/aircraft/N522ND), registered now
- Engine: Lyc IO360L2A
- Engine time: 8,330 hours
- System (JASC): [7414 · Magneto/Distributor](https://openairdocs.org/jasc/7414)
- Part: Stop Pin
- Condition: Loose
- Location: Magneto
- Part time: 830 hours
- Component: Magneto, Champion
- Component part number: 4371
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2018FA0000381

## Discrepancy

THE IMPULSE COUPLING STOP PIN HAS MIGRATED LOOSE AND IS RUBBING ON THE IMPULSE COUPLING. THIS IS THE 5TH ONE WE HAVE SEEN THIS YEAR AND COULD POTENTIALLY CAUSE A COMPLETE ENGINE FAILURE IF THE PIN COMES THE REST OF THE WAY OUT.

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