# SDR 2009FA0000308

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 1, 2009
- Submitted: April 17, 2009
- Operation: General aviation
- Aircraft: [N788JN](https://openairdocs.org/aircraft/N788JN), registered now
- Make and model: Cirrus SR20
- Registry model: [Cirrus SR20](https://openairdocs.org/model/cirrus-design-sr20) (OpenAirDocs)
- Aircraft serial: 1427
- Engine: Cont IO360ES
- System (JASC): [7414 · Magneto/Distributor](https://openairdocs.org/jasc/7414)
- Part: Brushes
- Condition: Eroded
- Location: Magneto
- Part time: 444 hours
- Component: Magneto, Slick
- Component part number: 6314
- 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/2009FA0000308

## Discrepancy

DURING A MX RUN, A HIGH MAG DROP WAS NOTED.  UPON FURTHER INSP THE LT MAGNETO WAS DISCOVERED THAT THE CARBON BRUSH OF THE DISTRIBUTOR HAD COMPLETELY ERODED AWAY AND EVIDENCE OF ARCING AND MELTING OF THE BRUSH BLOCK ASSY.  (K)

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