Abu Dhabi Aviation is the largest commercial helicopter operator in the Middle East, operating 54 helicopters (16 Augusta Westland AW139s, 15 Bell 412s, 19 Bell 212s and 4 Bell 206s), 3 fixed-wing aircraft (DHC-8). The company employs over 800 personnel, including 150 pilots and 150 aircraft maintenance engineers. The bulk of the company’s business activity is in support of Abu Dhabi Offshore Oil and engineering and construction companies. Other business activities include medical evacuation, survey, photography and charter. Additionally, all aerial spraying of crops in the UAE and the majority of aerial spraying in Oman is carried out by ADA.