When teaching TR malfunctions just keep it simple. There are 2 types. Loss of drive. Loss of control (stuck pedal, broken cable, jam before or after mixing unit). Easy to diagnose which is which. Loss of drive gets your attention immediately. Loss of control you might not notice at all initially. Loss of drive = lower collective, autorotation, shut down engine/s before the landing flare. Loss of TR control, the technique is the same whatever is causing the problem. Fly at 60-70 kts adjust collective until the ball is balanced and note the power (this will be very close to the power at touchdown). If ball centered with high power, lucky, expect slow speed run-on or hover landing. If low power, bad luck, expect a faster run-on landing. With nose left of centre and aircraft aligned with runway reduce speed to 45 kts just before touchdown but don't land. Fly level 5-10', slight flare to slow down, as the aircraft slows down it will descend, but don't let it land. Slowly increase power whilst flying level and continuing to slow down (the nose will come right as you increase power). When straight, keep that attitude and power setting and the helicopter will continue to slow down and land itself. Do not let the nose go right of centre (for anti-clockwise main rotor, eg Bell). Keep it straight during any ground-run with throttle and some opposite cyclic. That's it, easy. This technique will work for most helicopters.
As long as the TRGB or components haven't departed the scene and put you out of CofG limits, and you have a suitable landing site, you should be able to land without a scratch. I've practiced this many hundreds of times. The key to stuffing it up is letting the nose go right of centre when you're close to the ground. When this happens students tend to react by increasing power, and when you do that it very quickly becomes unrecoverable and you'll turn it into a mangled mess.
Last edited by gulliBell; 20th Sep 2017 at 15:55.