Airworthiness Directives 2004 I, DAVID ALAN VILLIERS, delegate of the Civil Aviation Safety Authority, acting under subregulation 39.001 (1) of the Civil Aviation Safety Regulations 1998: (a) revoke the Airworthiness Directives mentioned in Schedule 1; and (b) make, as separate instruments, each Airworthiness Directive mentioned in Schedule 1 and attached. David Villiers Delegate of the Civil Aviation Safety Authority 20 December 2004 Note: Each attached Airworthiness Directive is being re-made in exactly the same form as appears in the latest published edition of the Directive. Schedule 1 Revocation and Remaking of Airworthiness Directives AlliedSignal (Lycoming) Turbine Engines - T53 Series AD Name AD Number Rotating Components - Service Life Limit - CANCELLED AD/T53/1 Amdt 2 First Stage Power Turbine Rotor Blade Retaining Pins Retirement Life AD/T53/2 Rotating Component - Service Life Limits - CANCELLED AD/T53/3 Amdt 1 Engine Oil Pump Drive Gear Spline - Inspection AD/T53/4 Accessory Drive Gearbox - Rework AD/T53/5 Overspeed Pickup Gear and Shaft - Inspection and Modification AD/T53/6 Improved Gas Producer Turbine Rotor Blades - Introduction AD/T53/7 Second Stage Power Turbine Rotor Disc - Rework AD/T53/8 Second Stage Gas Producer Cylinder Bolts - Replacement AD/T53/9 Inlet Guide Vane Feedback Tube Assembly - Inspection AD/T53/10 Replacement Of Compressor Rotor Discs and Impeller Assembly AD/T53/11 Fuel Regulator Main Pressure Regulator Valve Diaphragm Replacement AD/T53/12 Improved Centrifugal Compressor Impeller - Introduction AD/T53/13 Torque Meter Boost Pump - Replacement AD/T53/14 Fuel Regulator - P1 Multiplier Connector Assembly Damping AD/T53/15 Power Turbine Clamping Plate - Inspection AD/T53/16 Centrifugal Compressor Impellers AD/T53/17 Gas Producer and Power Turbine Discs and Spacers AD/T53/18 N2 Accessory Drive AD/T53/19 Accessory Drive Carrier AD/T53/20 Tachometer Drive Spur Gear AD/T53/21