The AW139 is a medium-sized twin-engine helicopter developed by the helicopter division of the Italian aerospace conglomerate Leonardo. Initially launched as a joint development by helicopter leaders Bell and Agusta carrying Agusta-Bell AB139 designation. In 2005 following Agusta merger with British Helicopter manufacturer Westland. The new AgustaWestland company purchased back the 25% Bell stack on the program. Taking full ownership of one of the most successful commercial helicopters ever made. The AW139 is assembled in three plants: the two Leonardo plants in Philadelphia, USA and Vergiate, Italy, and under license in Tomilino, Moscow district, Russia.

The first AW139 prototype completed its first flight on February 3, 2001, prior to entering service in December 2004 where it proved a large success especially in the offshore oil & gas transportation market.

The AW139 is powered by two FADEC-controlled Pratt & Whitney Canada PT6C turboshaft engines, driving a five-bladed fully articulated main rotor, and features an unmatched 60 min dry-run transmission. The flight deck features an advanced avionics suite from Honeywell with large displays enabling a large selection of enhanced safety features such as a 3D Smart View System (SVS) integrated with Enhanced Ground Proximity Warning System (EGPWS).