40 AW139s had been delivered by Leonardo Helicopters to the country while the largest civil helicopter operator in China, CITIC Offshore Helicopter, operates eight AW139s alone. On 24 September 2018, the United States Air Force (USAF) announced that the MH-139, an AW139 variant, was the winner of a competition to replace the Vietnam-era Bell UH-1Ns, accordingly, the service is set to buy up to 84 MH-139s. On 19 December 2019, the USAF received the first MH-139A Grey Wolf at Eglin Air Force Base. Flight testing by the service commenced during 2020. Variants AB139 Original Italian-built production aircraft, 54 built. AW139 Designation change from 55th aircraft onwards, built in Italy. AW139 (long nose configuration) Long nose variant with increased room for avionics built in Italy and the United States. AW139M Militarised variant, capable of carrying various weapons payloads. HH-139A Italian Air Force designation for ten search-and rescue configured AW139Ms. VH-139A Italian Air Force designation for two VIP configured AW139s. HH-139B Italian Air Force designation for newer AW139. UH-139C Italian State Police designation. UH-139D Italian Carabinieri designation. PH-139D Italian Guardia di Finanza designation. US139 Military variant, was the AgustaWestland proposed entry for the US Army Light Utility Helicopter programme in partnership with L-3 Communications. MH-139 Grey Wolf Military variant from Boeing in partnership with Leonardo. It was selected by the United States Air Force to replace its UH-1N fleet. The USAF accepted its first MH-139 on 19 December 2019 and named it "Grey Wolf". AW139W A variant offered to the Polish Armed Forces. Operators The AW139 is used by military and other operators. Military Algerian Air Force Algerian Navy National Air Force of Angola Australian Army Royal Australian Air Force (contracted with CHC Helicopter) Bangladesh Air Force Colombian Air Force (VVIP Presidential helicopter) Cyprus Air Force Egyptian Air Force Ivory Coast Air Force Irish Air Corps Italian Air Force Guardia Costiera Kenya Air Force Lebanese Air Force Libyan Air Force Maltese Air Wing Royal Malaysian Navy (3 on order) Royal Malaysian Air Force Nepalese Army Air Service Nigerian Air Force Nigerian Navy Pakistan Air Force Pakistan Army National Air of Panama Qatar Emiri Air Force Senegalese Air Force Royal Thai Army Trinidad & Tobago Air Guard Turkmen Air Force UAE Air Force United States Air Force 96th Test Wing 413th Flight Test Squadron, Eglin Air Force Base 582nd Helicopter Group 37th Helicopter Squadron, Francis E. Warren Air Force Base (planned) 40th Helicopter