# SDR 2023FA0000056

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 24, 2023
- Submitted: January 30, 2023
- Operation: General aviation
- Aircraft: [N598A](https://openairdocs.org/aircraft/N598A), registered now
- Engine: Lyc O360A4M
- Engine time: 989 hours
- System (JASC): [7414 · Magneto/Distributor](https://openairdocs.org/jasc/7414)
- Part: Impulse Coupling
- Part number: M3163
- Condition: Defective
- Location: Magneto
- Part time: 989 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/2023FA0000056

## Discrepancy

ENGINE LEFT MAGNETO MODEL 4371 S.N. 21090440, FOUND IMPULSE COUPLING RIVETS LOOSE. REPLACED IMPULSE COUPLING

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