[Rote Dreizehn]

If your Engine destroyed by misconfiguration... (tested with Spitfire)

After the Propellor stops, you can dive with your Plane and the propellor begin to rotate again (ok thats normal).

But you will hear the Motorsound and the exhaust of the Motor begins to fire, like as a normal working Engine.

BTW:
It is possible to have a propellor to be feathered?
(I am not sure as Spitfire an BF109 can do that with pitch)

Thanks