(1) If an authorised designer ceases to carry on design work on terminal instrument flight procedures of a particular type, the authorised designer must give written notice to CASA to that effect within 7 days after ceasing to carry on the design work concerned.
(2) Subregulation (1) does not apply if, having regard to the authorised designer's circumstances, it is not reasonably practicable for the designer to give CASA at least 7 days notice and the notice is given as soon as is reasonably practicable.