The preamble para. 20 of Council Directive 96/67/EC stipulates that “an airport may not subsidize its ground-handling activities from the revenue it derives from its role as an airport authority.”Art. 178. 2. of Aviation Law Act states that when groundhandling services are performed by the airport manager, this airport manager is further obliged not to subsidize activities associated with the groundhandling from revenues obtained from the management of the airport.Recital 20 of the Preamble of Council Directive 96/67/EC of 15 October 1996 on access to the groundhandling market at Community airports establishes that an airport may not subsidize its ground-handling activities from the revenue it derives from its role as an airport authority.