# SDR AU000977

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 6, 2000
- Submitted: November 2, 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): [6310 · Engine/Transmission Coupling](https://openairdocs.org/jasc/6310)
- Part: Drive Shaft
- Part number: 206040015103
- Condition: Failed
- Location: Engine/Trans
- Part time: 5,509 cycles
- Component: Engine/Trans
- Stage of operation: NR
- How discovered: O
- Nature of condition: O
- Precautionary procedure: K, E
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AU000977

## Discrepancy

(AUS) ENGINE TO TRANSMISSION DRIVE SHAFT FAILED AND SEPARATED AT THE TRANSMISSION END.  SUSPECT ATTACHMENT NUTS PN MS21043-4 HAD NOT BEEN CORRECTLY RETORQUED (LEFT FINGER TIGHT) FOLLOWING SERVICING AND GREASING OF THE SHAFT APPROXIMATELY ONE HOUR PREVIOUSLY. TWO OF THE NUTS WERE FOUND ON THE TRANSMISSION DECK.   (X)

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