GAS German Aviation Service GmbH with place of business at Cologne Bonn Airport is the mother company of the biggest FBO & handling network in Germany. The company is present at 10 major airports throughout Germany: - Berlin Schoenefeld (BAS Berlin Aviation Service)- Cologne Bonn (CAS Cologne Aviation Service)- Dusseldorf (DAS Dusseldorf Aviation Service)- Frankfurt am Main & Egelsbach (FAS Frankfurt Aviation Service)- Hamburg (HAS Hamburg Aviation Service)- Leipzig (LAS Leipzig Aviation Service)- Munich (MAS Munich Aviation Service)- Stuttgart (SAS Stuttgart Aviation Service) - Oberpfaffenhofen (OAS Oberpfaffenhofen Aviation Service)GAS also offers JET A1 fuel through its subsidiary German Fuel Service and operates two own fuel trucks at Frankfurt Main International Airport. GFS also organizes fuel arrangements at all 10 airports with GAS stations. Customers benefit from a quick fuel uplift (prearranged on request) and possible payment with credit card, prepaid, cash or other. In addition to that, GAS German Aviation Service provides a wide scope of services for international aviation customers. The portfolio includes e.g. obtaining of landing permits for Germany, arrangement of mineral oil tax exemptions and refunds or handling of German air travel taxes and air security fees.