SonAir
SonAir Airline Services, S.A. (Portuguese: SonAir Serviço Aéreo, S.A.), commonly known as SonAir was established as DAR (Direcção de Aeronaútica) on 10 October 1979, is a venture of the Angolan national petroleum company Sonangol Group. == Operations == It provides helicopter services to Angolan oil facilities, both onshore and offshore, as well as scheduled and charter services within Africa and to the United States.