U.S. FAA, NTSB and U.S. Army Studies have shown that 22% of all crashes are
due to tailrotor strikes and loss of tail rotor effectiveness. NOTAR® systems eliminate these problems. NOTAR helicopters are designed and tested to be 50% quieter than any other helicopters in the world. This results in detection distances that are far superior to other aircraft. Using the Coanda Effect to provide tail boom lift and anti-torque, the NOTAR system is more stable and easier to control. This effect reduces the sensitivity to wind direction on helicopter control, through providing an important tactical advantage during combat operations.
Since the NOTAR system uses low-pressure air, it is not sensitive to holes made in
the tailboom by fire from automatic weapons. Studies have shown the NOTAR® system is 60% less vulnerable to small arms fire than tail rotor systems on comparable helicopters.