National Air services (NAS) is a Riyadh based holding company that provides, through its subsidiaries and its divisions, Private and commercial air transportation services. NAS` subsidiaries include NAS Air, Which is Saudi Arabia`s first smart concept carrier and follows the smart Airline principal that offers scheduled passenger transportation services. Other subsidiaries are NetJets Middle East program and operation special projects management ( OSPM ), these divisions of NAS provide charter private jet air transportation using fractional aircraft ownership, leasing programs and management contracts. The newest subsidiary, NAS TECH which aims to be a reputable leading technical organization in the Middle East that provides technical - services to ( VIP & Airlines) Aircraft.