#1788775
In ainneoin iarrachtaí leanúnacha an Aontais agus roinnt tríú tíortha agus an Aontais, áfach, ní dhearnadh prionsabail na hiomaíochta córa a shainiú fós le rialacha iltaobhacha sonracha, go háirithe, faoi chuimsiú chomhaontuithe an ICAO nó na hEagraíochta Domhanda Trádála (WTO), amhail an Comhaontú Ginearálta maidir le Trádáil Seirbhísí (GATS), agus an Iarscríbhinn maidir le Seirbhísí Aeriompair, comhaontuithe nach gcumhdaíonn a raon feidhme na seirbhísí aeriompair den chuid is mó.
However, in spite of continued efforts by the Union and some third countries, principles of fair competition have not yet been defined through specific multilateral rules, in particular, in the context of the ICAO or of World Trade Organization (WTO) agreements, such as the General Agreement on Trade in Services (GATS), and the Annex on Air Transport Services thereto, from the scope of which air transport services have been largely excluded.