Despite the amendments made by regulation 3 and Schedules 4 and 5, until the end of 31 August 2001 a requirement under either the Civil Aviation Regulations 1998 or the Civil Aviation Regulations 1988 for an authorised release certificate for an aircraft component is satisfied by an airworthiness tag/release note (within the meaning of the Civil Aviation Regulations 1998 as in force immediately before the commencement of this regulation) for the component.