Regardless of what helicopter you are flying, whether it’s the Robinson R22, Bell JetRanger, or any helicopter for that matter, you need to be comfortable with autorotations. At our flight school we have broken the auto in to three flights. If you’re a CFI reading this, try it. If you’re the student or certificated pilot looking to get proficient, ask for it.
Start with talking on the ground, sitting in the helicopter, and going through the physical motions. Move the controls the way you would actually respond. If you are the CFI, play the whole thing down (mentally) and don’t let the student get beaten before they even lift off. If you are the client/student try to put past bad experiences with autos behind you.
First Flight: Auto-rotative decent. Climb to at least 3,000 feet. I like even higher. The only thing you want at first is RPM control. There is plenty of time to adjust airspeed. RPM is the constant in most cases. Climb back up and then try adjusting the airspeed all the way through the decent from 30-70 knots, noting what cyclic control movements do to the RPMs. Get comfortable with controlling RPM with mostly cyclic movement. The ONLY thing you want to achieve by the end of this lesson is comfort with RPM and airspeed control in the decent.
Second Flight: I like to start with quick stops from 50 feet and 60 knots, which is very similar to the flare in an autorotation. End this lesson with auto-rotative descents, followed by a flare (quick stop). Join the needles (rotor and engine RPM) very early so it seems just like the two maneuvers put together. By doing this you’ve learned to join the needles at 300 feet AGL, and not in the flare where most over-speeds occur. End this lesson being comfortable with descents and the flare.
Third Flight: Go over all three maneuvers and then combine them all together. Join the needles a little further down the line each time. Don’t be crazy about that; the auto looks the same regardless of where you join the needles.
If you want to accomplish full down autorotations, add a fourth lesson of hovering autos and run-on landings, which will be the same as a touch down from zero ground speed or from 15-20 knots if you are unable to zero out the ground speed.
This should build your confidence and make it fun, regardless of what helicopter you are flying.