# SDR 20010529CW007

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 23, 2001
- Submitted: May 29, 2001
- Operation: General aviation
- Aircraft: [N729AS](https://openairdocs.org/aircraft/N729AS), registered now
- Make and model: Cessna 337H
- Registry model: [Cessna 337H](https://openairdocs.org/model/cessna-337h) (OpenAirDocs)
- Aircraft serial: 33701938
- System (JASC): [3710 · Vacuum Distribution System](https://openairdocs.org/jasc/3710)
- Part: Gear
- Part number: 632617D
- Condition: Worn
- Location: Vacuum Pump
- Part time: 725 hours
- Component: Starter Adapter, Cont
- Component part number: 64622
- 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/20010529CW007

## Discrepancy

A DETAINLED INVESTIGATION OF THE STARTER DRIVE REVEALED THAT ALL OF THE GEAR TEETH WERE WORN EXCESSIVELY ON ONE OF THE BEVEL GEARS WHICH DRIVES THE VACUUM PUMP.

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