The pilot reported that he had completed all pre-takeoff hydraulic checks and that after liftoff, he commanded a slight left turn. However, the helicopter kept turning and entered a spin. The pilot added that the pedals were jammed or locked, in the neutral position. Video from a security camera mounted on the hospital helipad revealed that the helicopter began to yaw in a counterclockwise direction as it lifted off the helipad. The helicopter completed several rotations before it impacted the roof top, and came to rest adjacent the helipad. A small post-crash fire started, but was extinguished shortly after the helipad's fire suppression system activated.
chopjock, I am not familiar with this model of aircraft. How does a throttle position problem translate into the above?
From the link in Dan Foulds' post.