Why is the propeller programmed to feather with somewhere near 50% power available?
Originally Posted by
porterhouse
Most likely 50% was misquoted, the number looks a bit high indeed, in fact a typical range for auto-feather to kick in is around the bottom 10%-15% of the available torque green arc range.
ATPCS (auto-feather and uptrim) is triggered when the torque on one of the engines goes below 18%.