Domanda 312, Air Law - ATPL - Airline Transport Pilot license

At the discretion of the Authority of the Member State concerned for a period not exceeding the period validity of basic licence
At the discretion of the Authority of that Member State concerned for a period not exceeding one year
At the discretion of the Authority of that Member State concerned for a period not exceeding one year, provided that the basic licence remains valid
At the discretion of the Authority of that Member State concerned for a period not exceeding two years, provided that the basic licence remains valid