# SDR AU981432

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 24, 1998
- Submitted: March 26, 2000
- Operation: General aviation
- Make and model: Bell 206B-3
- Registry model: [Bell 206B-3](https://openairdocs.org/model/bell-helicopter-textron-206b-3) (OpenAirDocs)
- Engine: Allsn 250C20B
- System (JASC): [6230 · Main Rotor Mast/Swashplate](https://openairdocs.org/jasc/6230)
- Part: Bearing
- Part number: 206040036103
- Condition: Failed
- Location: M/R Mast
- 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/AU981432

## Discrepancy

(AUS) MAIN ROTOR MAST UPPER BEARING FAULTY.  INVESTIGATION FOUND ONE BALL TO HAVE SEVERE PITTING/BRINELLING WITH THE OUTER RACE SHOWING SIGNS OF FAILURE.    PART TC:  1,224.

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