And this was from a friend of mine, who was flying a kit aircraft, it was an Exec helicopter, although i would never thought that someone would tech this, this is what happened.
He was flying along when suddently he was unable to turn left, but other than that, the cyclic was free, so he end up using pedals and right turns only to lign the heli to a field and landed.
His left cyclic movement was jamed with a screw that sets the stop points, this screw got loose and unthreaded and eventually disturbed any left movement at all...
I have never flown a heli like this, but this really happened. And for sure you wont practice this since its imposible to predict what would happened, and he only fly the machine and nothing else with whatever control he got left, and it wasn;t hard at all as he says, it was just nerve breaking not knowing what was causing it and if it could get worse, so he stoped fighting to get the left movement, and use right turns and pedals and that's it...
Just a thought.
, but it really happened to a friend of mine.