Throttle Hold (For emergency autorotations)

I often get asked about the importance of setting up throttle hold and here's an attempt at explaining it:

Autorotation - A way of 'gliding' a helicopter safely back to the ground without engine power. Autorotation is in itself a very demanding maneuver and challenging to execute correctly. To achieve this you need to be able to set the main rotor blades to a negative pitch. This allows you to keep the head speed up while you a rapidly descending, as you get closer to your landing you’ll want to “Flare” and give it positive pitch to slow the helicopter for your landing.

So the importance of programming throttle hold is if anything goes wrong with you heli during flight, say like a belt break, or something goes wrong with the tail. This would cause the tail to spin with the torque of the main blades. If you added more throttle it would only get worse. So in this situation, throttle hold (depending on your radio and programming) would cut the power of the engine, reducing the torque of the main blades which would cause the tail spin to stop and allow you to land your heli as seen in this video.

Pitch and throttle curves are totally personal preference though. These are only possibilities. I myself fly all modes with the same pitch range (+/-10 degrees or +/-11 degrees or +/- 12 degrees) This way I'm totally used to how the collective responds through all flight modes and it never changes.

Many people actually prefer it this way, although it's the most sensitive on the collective. It requires very subtle movements to climb or descend in a hover rapidly.

Here's a video to show you throttle hold in action: