# SDR CA121113008

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 9, 2012
- Submitted: September 14, 2015
- Operation: General aviation
- Make and model: Cessna 172S
- Registry model: [Cessna 172S](https://openairdocs.org/model/cessna-172s) (OpenAirDocs)
- Engine: Lyc IO360L2A
- System (JASC): [7414 · Magneto/Distributor](https://openairdocs.org/jasc/7414)
- Part: Magneto
- Condition: Out Of Tolerance
- Location: Left
- Part time: 149 hours
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CA121113008

## Discrepancy

(CAN) DURING GROUND RUN FOLLOWING 50 HR INSPECTION OF THE ACFT LT MAGNETO INTERNAL TIMING FOUND TO BE OUT OF LIMITS.  RT MAGNETO, SN: 12050388, TSN: 149 HRS WAS ALSO FOUND TO BE OUT OF LIMITS.  BOTH MAGNETOS REPLACED.

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