xmlns:atom="http://www.w3.org/2005/Atom"
1.Licences shall contain one or more of the following ratings in order to indicate the type of service which the licence holder is authorised to provide:
(a)the Aerodrome Control Visual (ADV) rating, which shall indicate that the holder of the licence is competent to provide an air traffic control service to aerodrome traffic at an aerodrome that has no published instrument approach or departure procedures;
(b)the Aerodrome Control Instrument (ADI) rating, which shall indicate that the holder of the licence is competent to provide an air traffic control service to aerodrome traffic at an aerodrome that has published instrument approach or departure procedures and shall be accompanied by at least one of the rating endorsements described in Article 11(1);
(c)the Approach Control Procedural (APP) rating, which shall indicate that the holder of the licence is competent to provide an air traffic control service to arriving, departing or transiting aircraft without the use of surveillance equipment;
(d)the Approach Control Surveillance (APS) rating, which shall indicate that the holder of the licence is competent to provide an air traffic control service to arriving, departing or transiting aircraft with the use of surveillance equipment and shall be accompanied by at least one of the rating endorsements described in Article 11(2);
(e)the Area Control Procedural (ACP) rating, which shall indicate that the holder of the licence is competent to provide an air traffic control service to aircraft without the use of surveillance equipment;
(f)the Area Control Surveillance (ACS) rating, which shall indicate that the holder of the licence is competent to provide an air traffic control service to aircraft with the use of surveillance equipment and shall be accompanied by at least one of the rating endorsements described in Article 11(3).
2.The holder of a rating who has not exercised the privileges associated with that rating for any period of four consecutive years may only commence unit training in that rating after appropriate assessment as to whether the person concerned continues to satisfy the conditions of that rating, and after satisfying any training requirements that result from this assessment.