Article 50 Regulations as regards air traffic controllersF6

the different categories, ratings and endorsements for the air traffic controller licences referred to in Article 49;

the privileges and responsibilities of the holders of air traffic controller licences, ratings and endorsements for the licences and medical certificates referred to in Article 49;

the rules and procedures for issuing, maintaining, amending, limiting, suspending or revoking licences, ratings and endorsements for the air traffic controller licences and medical certificates referred to in Article 49, including the rules and procedures for the conversion of national air traffic controller licences and national medical certificates into the air traffic controller licences and medical certificates referred to in Article 49;

the rules and procedures for air traffic controllers in regard to duty time limitations and rest requirements; such rules and procedures are to produce a high level of safety by protecting against the effects of tiredness while, at the same time, allowing for sufficient flexibility in scheduling.