The Messerschmitt-BOlkow-Blohm Bo 105 is a light, twin-engine, multi-purpose utility helicopter developed by BOlkow of Stuttgart, Germany. Production began under Messerschmitt-B�lkow-Blohm (MBB), which became a part of Eurocopter in 1991. Eurocopter continued to produce the Bo 105 until 2001, when it was replaced in the product line by the EC 135.