# SDR 2022FA0000685

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 7, 2022
- Submitted: November 14, 2022
- Operation: General aviation
- Aircraft: [N984AV](https://openairdocs.org/aircraft/N984AV), registered now
- Engine: Lyc IO360L2A
- Engine time: 2,307 hours
- System (JASC): [7414 · Magneto/Distributor](https://openairdocs.org/jasc/7414)
- Part: Impulse Coupling
- Part number: M3163
- Condition: Broken
- Location: Magneto
- Part time: 370 hours
- Component: Magneto, Champion
- Component part number: 4371
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2022FA0000685

## Discrepancy

LEFT MAGNETO P/N 4371 HAD AN IMPULSE COUPLING P/N M3163 PAW RIVET SHEAR, ENGINE CONTAMINATED WITH METAL AND REMOVED FROM SERVICE. THE MAGNETO IMPULSE COUPLING HAD APPROXIMATELY 370HRS IN SERVICE.

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