So we are not supposed to operate inside the shaded area??
So why do people fit winches?
Any hoisting op is going to be in the shaded area, as is any longline job. All it means is that if the engine quits, the aircraft is likely to be damaged, and possibly the people too. The risks of demostrating it (rather than regularly practising it) were balanced by the "Wow, i didn't know you could do that!" revelation.
In the RAAF in the 70s we carried out "engine failures in the hover" (because as explained above, you are not truly in autorotation) from heights of 60 and 100 feet. Remember that the Huey has a 275-ft hoist cable - you can be in a 250-ft hover over some of these big ghost gums.
The technique - and we were ready for it - was to dump the lever, hold attitude, and when you see the ground coming and you think "Oh, 5h1t!!" you take a sharp pull on the lever (makes a loud wok-wok sound) and then assess the cushioning pull in the normal manner. The first sharp pull also seemed to make the machine move forward at a fast walking pace - we didn't consciously lower the noes attitude.
One instructor advocated the "broomstick auto" - cut a circular hole through the floor under the collective, and poke a broomstick through it. Engine fails, put the lever to the floor and relax. When the chopper gets close to the ground, the broomstick pushes the collective up and the landing is smooth. or so he said...
