Airworthiness Directives 2004 - Revocation and Remaking - Sikorsky S-76 Series Helicopters

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 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

 Sikorsky S-76 Series Helicopters

 AD Name AD Number

 Fuselage Tail Cone Inspections AD/S-76/1 Amdt 2

 Engine Oil Filler Service Door - Modification AD/S-76/2

 Engine Air Inlet Cowl and Aft Cowl Assemblies - Modification AD/S-76/3 Amdt 1

 Main Rotor Hub - Inspection - CANCELLED AD/S-76/4 Amdt 1

 Power Plant Forward Tripod Support - Inspection - CANCELLED AD/S-76/5

 Hydraulic Pumps - Replacement AD/S-76/6

 Main Transmission Support Structure Fitting Assemblies - Inspection -  AD/S-76/7 Amdt 1

 Retirement Lives AD/S-76/8 Amdt 11

 Cyclic Torque Tube - Inspection of Centre Support Bearing Housing AD/S-76/9

 MGB Tip Plate Assembly Retention Bolts - CANCELLED AD/S-76/10

 Main Rotor Spindle Assembly - Inspection and Modification - CANCELLED AD/S-76/11 Amdt 1

 Upper Deck Flight Controls Installation - Modification AD/S-76/12

 Tail Rotor Outboard Retaining Plate Bolts - Inspection AD/S-76/13

 Fuselage Bulkhead - Engine Support Fitting Area - Inspection and Modification AD/S-76/14

 Main Rotor Damper Piston Rod - Inspection - CANCELLED AD/S-76/15

 Main Rotor Blade Root End - Inspection for Fatigue Cracking AD/S-76/16 Amdt 2

 Main Rotor Blade Spindle - Inspection and Replacement - CANCELLED AD/S-76/17 Amdt 1

 Pilot and Co-Pilot Seats, Support Frames - Inspection AD/S-76/18

 Main Rotor Blade - Tip Plate Assembly Retention Bolts - Inspection and  AD/S-76/19

 Power Plant Mounting Supports - Inspection and Modification AD/S-76/20

 Main Gear Box Assembly - Shaft and Spur Pinion Inspection and Retirement AD/S-76/21 Amdt 1

 Main Rotor Control Servo Actuators - Inspection for Balance Tube Passage AD/S-76/22

 Main Rotor Servo Actuators Internal Leakage Checks - CANCELLED AD/S-76/23

 Rotor Brake Installation - Modification AD/S-76/24

 MLG Positioning Rod and Lower Drag Race Rod End Assemblies AD/S-76/25 Amdt 1

 Vertical Stabiliser Pylon Leading Edge Skin AD/S-76/26 Amdt 1

 Main Rotor Blade Spar Tip End - Inspection AD/S-76/27

 Utility Hoist - Inspection AD/S-76/28

 Vertical Pylon Forward Spar AD/S-76/29 Amdt 4


 Tail Rotor Blade Elliptical Centering Plug and Retaining Pad AD/S-76/30 Amdt 1

 Upper Fuselage Station 215 Bulkhead AD/S-76/31 Amdt 1

 Tail Rotor Gearbox - Pitch Change Shaft - CANCELLED AD/S-76/32

 Engine Containment Kit and Compartment Protection Shield - CANCELLED AD/S-76/33

 Electrical Power - Essential Bus Modification AD/S-76/34

 Tail Rotor Controls Centering Quadrant - Modification AD/S-76/35

 Fuselage - Engine Compartment Centre Firewall - Inspection of No. 1 Tail Drive AD/S-76/36

 Engine Fire Extinguisher Harness - Modification AD/S-76/37

 Main Rotor Gear Box No. 1 and No. 2 Input Bevel Pinion Housing Assemblies -  AD/S-76/38

 Main Rotor Blade Tip Block and Tip End Assemblies - Inspection and  AD/S-76/39 Amdt 1

 Power Train Tail Drive Shaft Bearing Support Assembly AD/S-76/40

 Emergency Flotation System AD/S-76/41

 Upper Fuselage, Station 300 AD/S-76/42

 Tail Rotor Servo Actuator Linkage AD/S-76/43

 Tail Rotor Blade Disbonding - CANCELLED AD/S-76/44

 Main Rotor Servo Actuator Assemblies - CANCELLED AD/S-76/45

 Electrical DC Power System AD/S-76/46

 Engine and Engine Compartment Drain Lines AD/S-76/47

 Main Gearbox Lower Housing Jet Port Liners AD/S-76/48

 Main Rotor Servo Actuators - CANCELLED AD/S-76/49

 Main Rotor Servo Actuators - CANCELLED AD/S-76/50

 Main Rotor Servo Actuator Assemblies - CANCELLED AD/S-76/51 Amdt 1

 Power Turbine Speed Trim Control Actuators AD/S-76/52

 Doors - Window Frame AD/S-76/53

 Main Gearbox Tail Takeoff Flange Locknut AD/S-76/54

 Retention Bolt for Stationary Swashplate Expandable Pin AD/S-76/55 Amdt 1

 Vertical Pylon Forward Spar Cap Angles - CANCELLED AD/S-76/56

 Not Issued AD/S-76/57

 Tail Gearbox Output Shaft AD/S-76/58

 Tail Rotor Control Rod - Rod Ends AD/S-76/59 Amdt 1

 Swashplate Assembly Uniball Bearing Retainer AD/S-76/60

 AC Generator Interlock System AD/S-76/61

 Tail Gearbox Forward Fairing to Pylon Attachment Angle AD/S-76/62

 Main Rotor Blade Root and Pocket Separation AD/S-76/63

 ro Aire Air Conditioning System AD/S-76/64

 Main Rotor Shaft AD/S-76/65 Amdt 4


 Main Landing Gear Positioning Rod Assembly AD/S-76/66

 Attitude and Heading Reference Warning AD/S-76/67

 Landing Gear Parts Life Limit AD/S-76/68

 Main Rotor Blade Lightning Strike Damage AD/S-76/69

 Main Rotor Spindle Attachment Bolt AD/S-76/70

 Rotor Brake Disc AD/S-76/71

 Main Landing Gear Brake Discs - Replacement AD/S-76/72

 Dual Inverter Wiring AD/S-76/73

 

 

Overview

The Airworthiness Directives 2004 is a legislative instrument made under the Civil Aviation Act 1988, specifically through the Civil Aviation Safety Regulations 1998. Enacted by David Alan Villiers, the delegate of the Civil Aviation Safety Authority, these directives address the need to ensure the airworthiness of aircraft, specifically the Sikorsky S-76 Series Helicopters, by providing detailed technical standards and requirements for maintenance, inspections, and modifications. The primary objective of this legislation is to maintain the highest safety standards in civil aviation by ensuring that all aircraft meet specific airworthiness criteria. This was achieved through the revocation of previous directives and the remaking of updated directives to reflect the latest safety requirements and technical advancements.

Scope and Application

The Airworthiness Directives 2004 legislative instrument, issued by David Alan Villiers as a delegate of the Civil Aviation Safety Authority, pertains specifically to airworthiness directives concerning Sikorsky S-76 series helicopters. This instrument revokes existing airworthiness directives and simultaneously re-makes them as separate instruments. The directives cover a wide range of technical and safety aspects related to the Sikorsky S-76 series helicopters, including inspections, modifications, and replacements of various components such as engine oil filler service doors, engine air inlet cowl assemblies, hydraulic pumps, and main rotor blades, among others. The legislation applies to all persons and entities involved in the operation, maintenance, and modification of Sikorsky S-76 series helicopters within the Commonwealth of Australia. The directives are designed to ensure that these helicopters meet the required safety standards, and compliance is mandatory for all affected parties. The geographic reach of this legislation is national, applying across all states and territories of Australia. There are no stated exclusions, exemptions, or thresholds in the Airworthiness Directives 2004 instrument itself, but specific directives may include conditions or limitations relevant to particular components or circumstances. The application and enforcement of these directives may be further detailed through subordinate instruments or regulatory guidance issued by the Civil Aviation Safety Authority.

Key Provisions

The Airworthiness Directives 2004, under section (a), involve the revocation of certain Airworthiness Directives related to Sikorsky S-76 Series Helicopters. These revoked directives are detailed in Schedule 1. Under section (b), these directives are then remade as separate instruments, maintaining the same form as the latest published edition of each directive. This remaking process ensures that the directives remain current and enforceable, maintaining safety standards for the Sikorsky S-76 Series Helicopters. The obligations imposed by these directives on the parties or entities they govern primarily involve compliance with the specific requirements outlined in each directive. For example, operators and owners of Sikorsky S-76 Series Helicopters must adhere to the inspection, modification, and replacement instructions specified in the directives to ensure the continued airworthiness of their aircraft. This includes conducting regular inspections, performing necessary modifications, and replacing parts as required to meet safety standards. Failure to comply with these directives can result in significant consequences. While the specific penalties are not detailed within the text, breaches of airworthiness directives can typically lead to enforcement actions by the Civil Aviation Safety Authority. These actions may include fines, grounding of the aircraft, or other regulatory sanctions. In severe cases, non-compliance could result in criminal charges, which could lead to imprisonment depending on the nature and severity of the violation. The exact penalties are usually outlined in the Civil Aviation Safety Regulations 1998 and related legislation.

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Sourced from the Federal Register of Legislation at 26 August 2026. For the latest information on Australian Government law please go to https://www.legislation.gov.au.