Court of Justice 19 October 2000, C-163/99 (Portuguese Republic v Commission of the European Communities.)

Opinion of the Advocate-General Opinion of the Advocate-General 1. The Portuguese Republic is seeking the annulment of a Commission decision based on Article 90(3) of the EC Treaty (now Article 86(3) EC) in which the Commission found that the system of landing charges operated by the public undertaking which administers Portuguese mainland airports constituted a measure incompatible with Article