# SDR 2005FA0000676

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 10, 2004
- Submitted: May 10, 2005
- Operation: General aviation
- Aircraft: N620ZE
- Make and model: Cessna 421C
- Registry model: [Cessna 421C](https://openairdocs.org/model/cessna-421c) (OpenAirDocs)
- Aircraft serial: 421C0301
- Propeller: Mcauly 3FF32C501
- System (JASC): [6114 · Propeller Hub Section](https://openairdocs.org/jasc/6114)
- Part: Dowel Pin
- Condition: Sheared
- Location: Propeller Hub
- Part time: 3,670 hours
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2005FA0000676

## Discrepancy

PROPELLER OVERHAULED AND REINSTALLED.  TEST FLIGHT REVEALED VIBRATION.  DETERMINED TO BE SHEARED DOWEL PINS CAUSING LOOSE PROPELLER TO CRANK PROP DRIVE SHAFT.  (K)

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