Airworthiness Directives 2004 - Revocation and Remaking - Eurocopter AS 355 (Twin Ecureuil) 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

 Eurocopter AS 355 (Twin Ecureuil) Series Helicopters

 AD Name AD Number

 Retirement Life - Fatigue Critical Components AD/AS 355/1 Amdt 8

 Tail Upper Fin Support Fitting - CANCELLED AD/AS 355/2 Amdt 1

 Tail Rotor Blades, Bonding Separation of Stainless Steel Leading Edge  AD/AS 355/3

 Tail Rotor Drive Shaft Bearings - CANCELLED AD/AS 355/4

 Upper Fin Attachment Fitting - Inspection AD/AS 355/5

 Fire Proofing Of Power Plant Firewall - CANCELLED AD/AS 355/6

 Tail Rotor Blade Spar AD/AS 355/7 Amdt 5

 Main Gearbox Filter - Inspection AD/AS 355/8

 Main Gear Box Bevel Reduction Gear Module - Inspection of Bevel Ring  AD/AS 355/9

 Main Rotor Mast AD/AS 355/10 Amdt 4

 Main Rotor Transmission Epicyclic Planet Pinion Cage - Replacement -  AD/AS 355/11 Amdt 2

 Tail Rotor Blade Stainless Steel Leading Edge Protective Strips - CANCELLED AD/AS 355/12

 Horizontal Stabilizer - Inspection and Retirement AD/AS 355/13 Amdt 1

 Combiner Gearbox R.H. and L.H. AD/AS 355/14 Amdt 1

 Sliding Door Ball Joint - Inspection and Modification AD/AS 355/15 Amdt 1

 Main Gearbox Lubrication System - CANCELLED AD/AS 355/16

 Securaiglon (Ex Laiglon) Safety Belts - Modification AD/AS 355/17

 Main Rotor Sleeve Beams AD/AS 355/18

 Rear RH & LH Steps AD/AS 355/19 Amdt 1

 Engine Fire Extinguishing System AD/AS 355/20

 Starflex Arms and MGB Suspension Bars - CANCELLED AD/AS 355/21

 Main Rotor Head, Main Gearbox and Landing Gear AD/AS 355/22

 Hydraulic System AD/AS 355/23

 Consolidation of Early Airworthiness Directives AD/AS 355/24 Amdt 2

 MGB Suspension Bars AD/AS 355/25

 Tail Rotor Control Spider AD/AS 355/26 Amdt 1

 Winch Attachment Angle Brackets - CANCELLED AD/AS 355/27

 Installation of Automatic Relighting System AD/AS 355/28 Amdt 2

 Tail Rotor Front Drive Shaft - CANCELLED AD/AS 355/29


 Cargo Hook Emergency Manual Control AD/AS 355/30

 Tail Rotor Gearbox Casing AD/AS 355/31

 Servo Control Securing Screws AD/AS 355/32

 Tail Rotor Front Drive Shaft AD/AS 355/33 Amdt 1

 Rotating Swashplate Bearing AD/AS 355/34 Amdt 1

 AC Generation System AD/AS 355/35

 Aft Section Tail Rotor Drive Shaft Bearing AD/AS 355/36 Amdt 1

 Tail Rotor Pitch Control Lever Expansion Pin AD/AS 355/37

 Tail Rotor Drive Shaft Bearings AD/AS 355/38

 Electric Hoist Installation AD/AS 355/39

 Emergency Locator Transmitter Antenna AD/AS 355/40

 Main Rotor Pitch Change Horn Bushes AD/AS 355/41 Amdt 1

 Lucas Air Equipment Hoist - Explosive Squib AD/AS 355/42

 In Door Sliding Windows AD/AS 355/43 Amdt 1

 Engine Fire Detection AD/AS 355/44

 Cyclic Pitch Change Rod AD/AS 355/45

 Main Rotor Shaft Oil Jet AD/AS 355/46

 MGB Suspension Bi-Directional Cross Beam AD/AS 355/47 Amdt 1

 Tail Boom-to-Aircraft Structure Junction Attachment Screws AD/AS 355/48 Amdt 1

 Single-Pole Circuit Breakers AD/AS 355/49

 Tail Rotor Hub Pitch Change Bearings AD/AS 355/50 Amdt 4

 Starter Generators - CANCELLED AD/AS 355/51

 TR Head Pitch Change Plate Bearing Spacer AD/AS 355/52 Amdt 1

 Ferry Fuel Tanks AD/AS 355/53

 This AD yet to be issued AD/AS 355/54

 Electrical Power System Failure - CANCELLED AD/AS 355/55

 Starter Generators - CANCELLED AD/AS 355/56

 Tail Rotor Hub Pitch Change Bearings AD/AS 355/57 Amdt 1

 Rear Bench Cushions AD/AS 355/58 Amdt 1

 Main Rotor Starflex Star AD/AS 355/59 Amdt 3

 Tail Rotor Blade Trailing Edge AD/AS 355/60

 Starter Generators AD/AS 355/61

 BREEZE Electric Hoist AD/AS 355/62

 Tail Servo Control Rod Eye End Fitting AD/AS 355/63 Amdt 1

 Main Servocontrol Rods AD/AS 355/64 Amdt 1

 Horizontal Situation Indicator AD/AS 355/65 Amdt 1


 Sliding Door AD/AS 355/66 Amdt 1

 Main Gearbox Lubrication Pump AD/AS 355/67 Amdt 1

 'TRW-SAMM' Main Servocontrols AD/AS 355/68

 Main Rotor and Tail Rotor  Dynamic Components AD/AS 355/69 Amdt 1

 Electric Hoists AD/AS 355/70

 Electrical Power System AD/AS 355/71 Amdt 1

 Cyclic Control AD/AS 355/72 Amdt 1

 Flight Control Stop Screws AD/AS 355/73 Amdt 1

 Camera System Installation AD/AS 355/74

 MGB Free-Wheel AD/AS 355/75 Amdt 1

 Hoist Hooks AD/AS 355/76

 Rear Structure Junction Frame AD/AS 355/77

 Hoist Operator's Belt Snap Hook AD/AS 355/78

 Hydraulic System - Hydraulic Cut Off Function AD/AS 355/79

 Camera System Installation - 2 AD/AS 355/80

 Hydraulic Fluid in Cold Weather AD/AS 355/81

 BREEZE Hoist Hooks AD/AS 355/82

 Tail Rotor Blade Trailing Edge Tab AD/AS 355/83

 

Overview

The Airworthiness Directives 2004, enacted by David Villiers as a delegate of the Civil Aviation Safety Authority, is a legislative instrument aimed at improving aviation safety by ensuring compliance with specific airworthiness standards. This instrument revokes and remakes various airworthiness directives concerning the Eurocopter AS 355 (Twin Ecureuil) Series Helicopters, addressing issues such as fatigue critical components, fire proofing, and system inspections. The enactment was carried out under subregulation 39.001 (1) of the Civil Aviation Safety Regulations 1998, with the policy objective being to enhance the safety and reliability of aviation operations by issuing updated or consolidated directives. Each directive in the schedule is remade to reflect the latest published edition, ensuring that operators are adhering to the most current safety standards.

Scope and Application

The Airworthiness Directives 2004 legislative instrument applies to the aviation industry and specifically to the Eurocopter AS 355 (Twin Ecureuil) Series Helicopters, impacting manufacturers, operators, and maintenance providers within Australia. This legislative instrument is issued under the authority of the Civil Aviation Safety Authority (CASA) and is effective throughout the Commonwealth of Australia. It aims to ensure the safety and airworthiness of the specified helicopters by revoking outdated airworthiness directives and re-making them with updated information. The legislative instrument includes a schedule detailing the specific directives that are revoked and remade, reflecting the latest safety requirements and standards. The application of these directives is crucial for maintaining the operational safety of the aircraft, and failure to comply can result in serious safety risks. Subordinate instruments may be used to further refine or extend the application of these directives as needed.

Key Provisions

The legislative instrument Airworthiness Directives 2004, issued by David Alan Villiers as the delegate of the Civil Aviation Safety Authority, primarily revokes and remakes several Airworthiness Directives (ADs) concerning Eurocopter AS 355 (Twin Ecureuil) Series Helicopters (section 2(a) and (b)). These ADs are listed in Schedule 1, and they have been remade to reflect the latest published edition of the directives. The instrument ensures that the ADs are up to date and legally in force as separate instruments. The obligations and requirements imposed by the Airworthiness Directives 2004 include detailed specifications and instructions for various components and systems of the Eurocopter AS 355 helicopters. These directives mandate inspections, modifications, replacements, and retirements of critical components such as the tail rotor blades, gearboxes, hydraulic systems, and other structural parts. Operators and maintenance personnel must comply with these ADs to ensure the airworthiness and safety of the helicopters, following the prescribed timelines and procedures. Failure to comply with the Airworthiness Directives 2004 can result in significant civil and criminal consequences. The Civil Aviation Safety Regulations 1998 provide for penalties for non-compliance, which can include substantial fines and imprisonment. The exact penalties depend on the severity of the breach and are determined by the courts. Operators and maintenance personnel must ensure strict adherence to the ADs to avoid these legal repercussions and to maintain the airworthiness of the helicopters.

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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.