The pilot reported that, while hovering the helicopter to park between three stationary helicopters, he had been given the signal for a 180 degree "pedal turn" by the ground crew. As the helicopter was about to touchdown, he felt a shudder in the airframe, immediately rolled the throttle closed, and completed an emergency shutdown.

A post-accident examination revealed that the tail rotor blades struck the main blades of a stationary helicopter.

The helicopter sustained substantial damage to the tail rotor and main rotor systems.

The pilot reported that there were no preaccident mechanical failures or malfunctions with the helicopter that would have precluded normal operation.