COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Gulfstream (Grumman American) GA-7 Series Aeroplanes AD/GA-7/2 Elevator Trim Control Master Chain - Inspection NK and Modification Applicability: All models GA-7 with S/Nos. GA7-0002 to GA7-0036, GA7-0038 to GA7-0043, GA7-0045 and GA7-0049. Document: 1. GAC SB ME-6; or 2. FAA AD 78-22-06. Compliance: 1. For those aircraft with current certificate of airworthiness, within 5 hours time in service after 18 December 1978. 2. For those aircraft not certified at 18 December 1978, before certification.