# SDR 95ZZZX5929

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 25, 1995
- Submitted: March 26, 2000
- Operation: General aviation
- Aircraft: [N421BP](https://openairdocs.org/aircraft/N421BP), registered now
- Make and model: Cessna 421B
- Registry model: [Cessna 421B](https://openairdocs.org/model/cessna-421b) (OpenAirDocs)
- Aircraft serial: 421B0388
- Engine: Cont GTSIO520H
- System (JASC): [7414 · Magneto/Distributor](https://openairdocs.org/jasc/7414)
- Part: Contact Assy
- Part number: 10382584
- Condition: Broken
- Location: Lt Eng Rt Mag
- Part time: 242 hours
- Component: S6LN1255
- Stage of operation: IN
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/95ZZZX5929

## Discrepancy

DURING PRE-FLIGHT ENGINE CHECK, PILOT NOTED THE RIGHT MAGNETO ON THE LEFT ENGINE DEAD.  MECHANIC REMOVED MAGNETO AND DISCOVERED THE CONTACT ASSY CAM FOLLOWER ARM BROKE JUST FORWARD OF THE SECURING SCREW.  CAUSE OF BREAK UNKNOWN.

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