(ATLANTA, USA) HAI Heli Expo 8/03/2023.Dr.Mark Pierotti. Abu Dhabi Aviation and Leonardo have signed a contract for the purchase of six AW139 twin-engine intermediate helicopters. The aircraft are expected to be delivered in the 2024-2026 time frame and will be used to perform offshore transport duties to expand the ADA AW139 fleet primarily in support of the energy industry. These modern aircraft will also allow the ADA to achieve compliance with the latest OGP guidelines.