This robust helicopter was initially intoduced during the mid-fifties and may even function as the understood rotor-blade aircraft world-wide. Reliability is its best feature. It had been created for the U.S. Army through the Vietnam war. Numerous of UH-ls are in service as transport, ambulance and assault aircraft. Licensed manufacturing in Italy, Germany and Japan make it area of the armed and authorities forces of more than fifty countries. Presently twin-engine variations (Italeri kit no. 847) are being produced. This helicopter may serve for the next twenty years or higher.