Originally Posted by
sgs233a
Depending on it's and the prop's state, could contribute a fair bit of drag rather than thrust, even if still technically running...possibly more than with it shut down and feathered, cowl flaps closed, etc.
It would be interesting to know whether the cockpit gopro showed the BMEP gauges and what the indications were. (I think convairs had BMEP gauges, not 100percent sure.