Originally Posted by
glekichi
How about when cycling the prop duing ground run ups?
This is generally done at 50% power or less. The objective is simply to fully exercise the pitch change system, and it needn't be at high power.
If a multiengine, the feathering check certainly stalls the airfoil - but you don't stay there long. (In fact the inboard section of the blade airfoil will be at a negative AOA stall...)