COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 106 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES AlliedSignal (Garrett/AiResearch) Turbine Engines - TFE731 Series AD/TFE731/8 Second Stage Turbine Disc Inspection 3/86 Applicability: TFE 731 series as listed in Garrett SB TFE 731-72-3252 Rev 1. Document: Garrett SB. TFE 731-72-3252 Rev. 1., or AD/AIR-T/46 Amdt 1. Compliance: At first access or next scheduled major periodic inspection, whichever occurs first. Background: This Directive is raised in issue to include additional requirements of Revision 1 of Garrett SB TFE 731-72-3252.