# SDR S7HR201412050001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 13, 2014
- Submitted: December 5, 2014
- Operation: General aviation
- Filed by: [Aircraft Electrical Components Inc, repair station S7HR883J](https://openairdocs.org/faa-repair-station/S7HR883J/aircraft-electrical-components-inc.md) (OpenAirDocs)
- System (JASC): [7414 · Magneto/Distributor](https://openairdocs.org/jasc/7414)
- Part: Magnet
- Condition: Failed
- Location: Magneto
- Component: Magneto, S6RSC25P
- Component part number: 10500556101
- Stage of operation: NR
- How discovered: V
- Nature of condition: R
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/S7HR201412050001

## Discrepancy

CAST PERMANENT MAGNET ASSEMBLY HAS ROTATED ON ROTOR SHAFT.  IMPULSE COUPLING APPEARS TO HAVE ENGAGED AT HIGHER RPM; STOP PINS SHEARED.  TORSION SHOCKING DUE TO UNDERWEIGHTED PROP.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.