COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Gates Learjet 24 & 25 Series Aeroplanes AD/LEARJET/7 Emergency Exit Window, Seat-Back Operating Instruction Placard - Installation 3/75 Applicability: All models. Requirement: Install a placard above the cabin emergency exit window, immediately below the existing window operating instruction placard, as follows: "PUSH SEAT-BACK FORWARD TO CLEAR EXIT". Note: Lettering shall be a minimum of 3/16" high in red on a white background. Compliance: Before 30 June 1975.