# SDR 2020FA0000497

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 12, 2020
- Submitted: November 12, 2020
- Operation: General aviation
- Aircraft: [N1687C](https://openairdocs.org/aircraft/N1687C), registered now
- Make and model: Cessna 172S
- Registry model: [Cessna 172S](https://openairdocs.org/model/cessna-172s) (OpenAirDocs)
- Aircraft serial: 172S11731
- Aircraft time: 2,115 hours
- Engine: Lyc IO360L2A
- Engine time: 2,115 hours
- Propeller: Mcauly 1A170E
- System (JASC): [7414 · Magneto/Distributor](https://openairdocs.org/jasc/7414)
- Part: Impulse Coupling
- Part number: M3163
- Condition: Loose
- Location: Magneto
- 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/2020FA0000497

## Discrepancy

FOUND LOOSE RIVET WITHIN MAGNETO IMPULSE COUPLING (P/N: M3163) DURING 500 HOUR MAGNETO INSPECTION.

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