Originally Posted by
GearDownThreeGreen
Can't say anything for the ATR, however, most engines are still producing some power in these cases, so reducing the PL will most likely give you finer pitch, but still positive thrust.
OK, I'm not really clear on what sort of event the OP is referring to, but if the engine is still producing some power, then I suppose at some point reducing the power lever will create some drag.
It you're right at takeoff and the engine is producing some power we train to not take action until established in a climb. Of course we have he luxury of a flight engineer who can tell us whether the engine is making useful power while we're busy flying the airplane.