# SDR 97ZZZX3333

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 11, 1995
- Submitted: March 26, 2000
- Operation: General aviation
- Aircraft: N733SW
- Make and model: Cessna 172N
- Registry model: [Cessna 172N](https://openairdocs.org/model/cessna-172n) (OpenAirDocs)
- Aircraft serial: 17268521
- Engine: Lyc O320H2AD
- System (JASC): [7414 · Magneto/Distributor](https://openairdocs.org/jasc/7414)
- Part: Magneto
- Part number: D4RN2021
- Condition: Teeth Sheared
- Location: Distributor Gear
- Component: Bendix
- 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/97ZZZX3333

## Discrepancy

TEETH ON DISTRIBUTOR GEAR WERE SHEARED CAUSING A SEVERE MAG DROP ON LEFT MAGNETO SIDE.  CAUSE UNKNOWN.  A MAGNETO LOCKING TOOL WAS NOT USED DURING INSTALLATIONS AFTER AD COMPLIANCES.  THIS IS A SINGLE POINT DUAL MAGNETO.

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