If an exemption from a requirement of an airworthiness directive granted, under regulation 42ZS of CAR, in relation to an aircraft was still in force immediately before 1 January 2000, then, subject to these Regulations, the exemption has effect as if it were an instrument issued under regulation 39.004, on that day, excluding the aircraft from the operation of the airworthiness directive.
Subpart 202.BA -- Transitional provisions for Part 42 (Continuing airworthiness requirements for aircraft and aeronautical products)