COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Gulfstream (Rockwell) 114 Series Aeroplanes AD/ROCK-114/3 Cabin Air Vent - Modification 5/78 Applicability: All models with S/Nos. listed in requirement document. Document: Rockwell SB No. SB-114-6. Compliance: Unless already accomplished, within 100 hours time in service after 30 June 1978. Note: When this Directive has been complied with the operator may apply to a Regional Airworthiness Office of the Department for the withdrawal of the flight manual "P" amendment to para. 3.4.