The UH-60 Black Hawk helicopter is the U.S. Army’s primary medium lift utility transport and air assault aircraft. The UH-60 Black Hawk is a twin-engined medium lift utility helicopter. It is equipped with a single 4-bladed rotor and a single 4-bladed tail rotor. The basic crew compliment for the UH-60A is three; pilot, co-pilot, and crewchief. The titanium cored rotor blades are resistant to AAA (anti-aircraft artillery) fire up to 23mm and are equipped with pressurized sensors capable of detecting loss of rotor pressurization (damage).