# SDR 2003FA0000086

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 15, 2003
- Submitted: January 31, 2003
- Operation: General aviation
- Aircraft: N135Z
- Make and model: Beech 58P
- Registry model: [Beech 58P](https://openairdocs.org/model/beech-58p) (OpenAirDocs)
- Aircraft serial: TJ247
- Engine: Cont TSIO520*
- System (JASC): [7414 · Magneto/Distributor](https://openairdocs.org/jasc/7414)
- Part: Bearing
- Part number: 103915686
- Condition: Loose
- Location: Distributor Blk
- Part time: 189 hours
- Component: Distributor Blk
- Component part number: 103915686
- 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/2003FA0000086

## Discrepancy

DURING CRUISE POWER SETTING IN FLIGHT.  RT ENGINE RPM FLUX 100-200 RPM AND MANIFOLD PRESSURE FLUX 1 INCH TO 2 INCH.  DURING GROUND RUN TO TROUBLESHOOT SYSTEM ENGINE RPM WOULD SUDDENLY DROP 200-400 RPM.  AT CRUISE SETTING.  PERFORMED MAGNETO CHECK.  LT MAG FAILED.  BEARING IN DISTRIBUTOR BLOCK SPINNING, POSSIBLE DATE CODE ON BLOCK 01/09.

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