Pilots who are changing category from aeroplane to helicopter or vice versa, need to only pass the new category specific exams within one ‘window’. This requirement was previously limited to only those who actually held their Australian CPL or ATPL licence. CASA’s now extend this to those who hold either the Australian CPL or ATPL licence OR the respective CPL or ATPL Theory Examination Credit. See pages CPL Change of category or ATPL Change of category for more details.