# SDR 2015FA0000602

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 5, 2015
- Submitted: November 20, 2015
- Operation: General aviation
- Aircraft: N21679
- Make and model: Cessna 172S
- Registry model: [Cessna 172S](https://openairdocs.org/model/cessna-172s) (OpenAirDocs)
- Aircraft serial: 172S9648
- Engine: Lyc IO360L2A
- System (JASC): [7414 · Magneto/Distributor](https://openairdocs.org/jasc/7414)
- Part: Magneto
- Part number: 4371
- Part serial: 15040644
- Condition: Out Of Adjust
- Location: Engine
- Part time: 94 hours
- Stage of operation: NR
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2015FA0000602

## Discrepancy

MAGNETOS WERE INSTALLED ON 8/27/2015.  INSTALL TACH 4455.9.  DURING FIRST 100 HR INSPECTION, BOTH MAGNETOS WERE FOUND TO BE 8 DEGREES ADVANCED.  BOTH WERE SET AT 33 DEGREES BTDC AND ARE SUPPOSED TO BE SET A 25 DEGREES.  REMOVAL DATE 11/5/2015, TACH AT REMOVEAL 4550.1.  TOTAL TIME ON PART WAS 94.2 HRS.

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