When the EU issues a blanket ban on all airlines registered in a particular state it is because that countries aviation regulators/regulations are not up to ICAO standards. In excess of 90% of the airlines in Annex A to the regulation are in this category. Any airline can dispute the EUs ban in respect of their operations. A number have, such as TAAG, Garuda and Iranair, and can operate some or all of their aircraft to/from the EU.