The BK-117 is a twin-engined medium utility-transport helicopter jointly developed between Messerschmitt-Bölkow-Blohm (MBB) of Germany and Kawasaki of Japan. It is a twin engine helicopter whose rugged but sleek design and large cabin interior provides mission versatility without sacrificing comfort. It is one of the world's leading Medevac and Search & Rescue helicopters. Besides its low vibration level in flight, the BK117 provides easy loading and unloading of stretcher patients using 2 large rear clamshell doors. This addon represents the B2 variant with four configurations: