Jetcareers - View Single Post - Turbo props running in feather before shutdown

spilot · September 20th, 2008, 11:55

Remembering from Caravan training, the word is to feather, to allow the oil otherwise used in the prop hub, to flow back into the oil reservoir and keep the scavenge pumps and stuff lubricated (having more oil there for startup).

Also, brushes used to transfer electricity to the prop heat elements, are prone to damage if the prop is spinning the opposite direction of normal, thus, when feathering, the wind will likely not be turning the prop while parked without securing the prop.

I haven't heard about feathering and then leave it running for 30 seconds. I'd imagine it may cause warm exhaust gases to heat up the exterior fuselage and melt stuff. Very bad. The oil cooler and the engine also enjoys airflow from the prop. So I feather, and shut down within a few seconds.

September 20th, 2008, 11:55	#10
spilot Junior Member Join Date: Jan 2008 Location: city Posts: 94	Re: Turbo props running in feather before shutdown Remembering from Caravan training, the word is to feather, to allow the oil otherwise used in the prop hub, to flow back into the oil reservoir and keep the scavenge pumps and stuff lubricated (having more oil there for startup). Also, brushes used to transfer electricity to the prop heat elements, are prone to damage if the prop is spinning the opposite direction of normal, thus, when feathering, the wind will likely not be turning the prop while parked without securing the prop. I haven't heard about feathering and then leave it running for 30 seconds. I'd imagine it may cause warm exhaust gases to heat up the exterior fuselage and melt stuff. Very bad. The oil cooler and the engine also enjoys airflow from the prop. So I feather, and shut down within a few seconds.