# SDR 20010613CW021

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 20, 2001
- Submitted: June 13, 2001
- Operation: Air carrier
- Aircraft: [N6BU](https://openairdocs.org/aircraft/N6BU), registered now
- Make and model: Bell 206B
- Registry model: [Bell 206B](https://openairdocs.org/model/bell-206b) (OpenAirDocs)
- Aircraft serial: 4034
- Engine: Allsn 250C20
- System (JASC): [7321 · Fuel Control/Turbine Engines](https://openairdocs.org/jasc/7321)
- Part: Bearing
- Part number: 320580
- Part serial: 23065104
- Condition: Failed
- Location: Fuel Control
- Stage of operation: CR
- How discovered: O
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/20010613CW021

## Discrepancy

AIRCRAFT IN CRUISE FLIGHT.  PILOT NOTICED THAT THE MAIN ROTOR NR 2 STARTED TO OVER-SPEED.  PILOT LANDED AIRCRAFT SAFELY UNDER ITS OWN POWER.  AFTER INVESTIGATING CAUSE, IT WAS FOUND THAT THE ENGINE FUEL CONTROL SHAFT BEARING HAD FAILED CAUSING FUEL CONTROL TO GO ERRATIC.

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