3.2.2.2  Providers of Air Traffic Services
Providers of air traffic services at units where they are responsible for the provision of air traffic control services must have processes, procedures and competent personnel to ensure that controllers who have not exercised the privileges of a particular rating or rating endorsement for a period of more than four years do not commence unit training in that rating or rating endorsement:
a) unless they have undertaken and successfully completed an APC in that rating and rating endorsement (if any);
b) if more than 6 months have elapsed since the successful completion of the APC referred to in a) above.
3.3  Assessment for Previous Competence - CAA Requirement when Competence in Doubt
3.3.1  The CAA may require a controller to undertake an assessment for previous competence when his ability to provide a safe air traffic control service is in doubt. The level of competence, against which the controller is assessed, is that required for successful completion of an approved course of initial training.

3.4  Assessment for Previous Competence – the 6-month Rule
3.4.1  Requirement
A student or trainee air traffic controller who does not commence unit training within 6 months of having completed the initial course of training in the rating discipline in which they will be providing an air traffic control service under supervision, shall undertake an Assessment for Previous Competence.

3.4.2  Responsibilities
3.4.2.1  Air Traffic Controller Licence Holders
Student and trainee air traffic controllers who have not commenced unit training within 6 months of having completed the initial course of training in the rating discipline in which they will be providing an air traffic control service under supervision, shall not commence unit training in that rating:
a) unless they successfully complete an APC in that rating;
b) if more than 12 months have elapsed since they successfully completed the APC referred to in a) above.
NOTE:  Where b) above applies, controllers will be required to successfully complete a further APC before commencing unit training.

3.4.2.2  Providers of Air Traffic Services
Providers of air traffic services at units where they are responsible for the provision of air traffic control services must have processes, procedures and competent personnel to ensure that controllers who have not commenced unit training within 6 months of having completed the initial course of training in the rating discipline in which they will be providing an air traffic control service under supervision, do not commence unit training in that rating:
a) unless they have undertaken and successfully completed an APC in that rating;
b) if more than 12 months have elapsed since the successful completion of the APC referred to in a) above.
3.5  Arrangements for Assessments for Previous Competence
Assessments for previous competence may be conducted at a certified training provider or at a unit approved to conduct assessments for previous competence.
3.5.1  Assessment for Previous Competence at Certified Training Providers
3.5.1.1  Certified training providers offering approved courses of initial training and wishing to conduct APCs shall submit their proposals to ATSD for approval.
3.5.1.2  Where so approved, certified training providers may conduct APCs for:
a) air traffic controllers who have not exercised the privileges of a particular rating or rating endorsement for more than four years;
b) air traffic controllers who are specifically required by the CAA to undertake an assessment for previous competence;
c) student or trainee air traffic controllers who have not commenced unit training within six months of completing an approved course of initial training.
3.5.1.3  Proposals for assessing for previous competence should include: a) details of the assessments to be used; and b) nominations of the verifiers who will conduct the assessments.
　
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