# SDR 96ZZZX2026

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 5, 1996
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: [N738T](https://openairdocs.org/aircraft/N738T), registered now
- Make and model: Beech 58
- Registry model: [Beech 58](https://openairdocs.org/model/beech-58) (OpenAirDocs)
- Aircraft serial: TH706
- Engine: Cont IO520C
- System (JASC): [7414 · Magneto/Distributor](https://openairdocs.org/jasc/7414)
- Part: Magneto
- Part number: 103493504
- Condition: Failed
- Location: Rotor
- Component: Bendix
- Stage of operation: IN
- Nature of condition: R
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/96ZZZX2026

## Discrepancy

ROUGH MAGNETO ENCOUNTERED ON RUN-UP MAGNETO CHECK.  INSPECTION FOUND FAILED ROTOR AT TRAILING FINGER TOWER WHICH CAUSED ROTOR TO LOCK UP IN TOWER, SHEARING DRIVE GEARS ON PLASTIC GEAR BENDING DRIVE COUPLING TIN, AND DESTROYING DRIVE CUSHIONS AND DEFORMING END OF GEAR DRIVE SHAFT.  SUSPECT CAUSE IS AGE OF PLASTIC GEAR.

---
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.