N7530DRobinson Helicopter R22 BETA · 2004

The flight instructor reported that during an instructional flight, he and his student were approaching a ridge line to conduct a practice pinnacle landing. The student pilot stated that as they were over the ridge line, the helicopter was struck by a wind gust, and it yawed to the right. He added left anti-torque pedal to correct the yaw, then the low RPM horn sounded, and the instructor took the flight controls. He lowered the collective and added forward cyclic to move away from terrain, however the helicopter landed hard in the snow and rolled onto its right side. The tail boom was substantially damaged. The instructor reported that there were no preaccident mechanical malfunctions or failures that would have precluded normal operation.