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Aircraft Maintenance TroubleShoot > Propeller Governor

Failure to feather. won't feather

1. Aircraft batteries low.
2. Faulty aircraft electrical system.
3. Failure to push button to remain engaged.
4. Failure to remain feathered with push button failing to disengage.
5. Shearing coupling in feathering pump.
6. Restricted oil supply to feathering pump.
7. Defective feathering pump.
8. Damaged high-pressure oil supply line to governor.
9. High-pressure transfer valve stuck in closed position.
10. Incorrect operating procedure

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Disclaimer: sacskyranch.com contains abundant information relating to aircraft maintenance. The information provided is not intended to supercede or supplement the F.A.A. approved maintenance and/or operator’s manuals. Those F.A.A. approved manuals must be utilized when performing maintenance and/or operating aircraft.