The PC6 has an increible ability to descend with the engine in
BETA 6000 feet per minute without the airspeed over 90 knots.
I seem to recall talking to one of the PPRune Mods about this a couple of years back - he used to para drop in them. Could have been Rob?
Re the herc above...would it not be doing as the jets do and land concurrent with the application of full power in the case of a missed hook?