# SDR CA041001001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 22, 2003
- Submitted: November 2, 2004
- Operation: General aviation
- Make and model: Bell 206B
- Registry model: [Bell 206B](https://openairdocs.org/model/bell-206b) (OpenAirDocs)
- Aircraft time: 10,738 hours
- Engine: Allsn 250C20B
- System (JASC): [2913 · Hydraulic Pump (Electric/Engine), Main](https://openairdocs.org/jasc/2913)
- Part: Drive Gear
- Part number: 8505141
- Condition: Cracked
- Location: Tach Drive
- Component: Hydraulic Pump, Parkerhanfin
- Component part number: 206076022101
- 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/CA041001001

## Discrepancy

(CAN) DURING A NORMAL O/H OF THE PUMP ASSY MPI INSP OF THE DRIVEN GEAR FOUND A CRACK ON THE TACH DRIVE END OF THE SHAFT.  THE CRACK WAS IN THE CORNER OF THE SQUARE DRIVE.  PUMP GEARS REPLACED.

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