Approval of modifications not previously the subject of investigation

With reference to Article 14 of the Order – (1) The modifications of an aircraft for which approval in writing is required to be obtained are all those modifications which have not been previously so approved and which, in the opinion of the Board, affect the safety of the aircraft, provided that if a modification has already been approved in relation to one aircraft of any type it shall not be necessary to obtain approval for the same modification when incorporated in another aircraft of the same type subject, however, to compliance with the requirements of regulation 50 of these (2) Application for the approval of modifications under paragraph (1) of this regulation should be made in writing to the Board.