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#2
December 19th 03, 05:11 AM
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Why do we pull the props back to feather prior to shutting down? I cannot see any reason for this. This seems a useless procedure on the shutdown checklist. This is going back a few years, like 30 +, to my Beech 99 ground school. The P&W engines have always been 'free turbine" compared to the Garrett TPE series that are direct connect or bigger stuff like the Allison T-56/501D22. It has something to do with engine oil scavange I think. Another part is that the engines can idle at lower rpm with feathered props. Also the newer P&W 100 series have prop brakes so the engines on the ATR and DASH eight can be running as APU's. Any more I just sell them not fly them. I am sure someone will prove me wrong. Walt 
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