• If a certificate holder becomes aware of a decrease in their medical fitness due to injury or illness, which may render them unable to exercise the privileges of their licence, or becomes aware that they are pregnant, they must inform their Aeromedical Examiner (AME).  
     
    The European Class 3 medical requirements for Air Traffic Controllers can be found in Part ATCO MED Medical Requirements for Air Traffic Controllers.  
        
    The UK CAA Medical Department recognises that additional guidance material is sometimes required and it can be difficult for applicants and their doctors to interpret the requirements in a particular condition.  This site contains explanatory notes for a set of common medical conditions which might affect pilots and air traffic controllers and protocols or algorithms with guidance on the type of tests and reports that may be required in particular circumstances.