Boeing MH-139 Grey Wolf

The Boeing MH-139 Grey Wolf is a twin-engine helicopter operated by the United States Air Force for security and support missions. Built under licence by Boeing, it is a variant of the Italian-built Leonardo AW139 multi-role helicopter. On 24 September 2018 the Air Force awarded Boeing a 2.4 billion dollar contract to replace the ageing UH-1N fleet, aiming to patrol nuclear missile fields and carry senior officials, and the first 13 MH-139A aircraft were ordered for 285 million dollars. The helicopter is used for security patrols, search and rescue and personnel and cargo transport. It is propelled by two Pratt & Whitney Canada PT6 turboshaft engines with a reduced infrared signature. The planned fleet shrank from 84 helicopters to 80, then 74, and the programme has faced delays including FAA type certification.