Airworthiness Directives 2004 - Revocation and Remaking - Hiller UH-12 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

 Hiller UH-12 Series Helicopters

 AD Name AD Number

 Main Rotor Blade - Inspection AD/HILLER 12/1

 Main Rotor Blade Spar - Inspection AD/HILLER 12/2

 Tail Rotor Blade Assembly - Provision of Vent Hole AD/HILLER 12/3

 Main Transmission - Inspection - CANCELLED AD/HILLER 12/4

 Main Rotor Transmission Lube System - Modification - CANCELLED AD/HILLER 12/5 Amdt 2

 Superseded by AD/HILLER 12/11 AD/HILLER 12/6

 Wobble Plate Screws - Replacement - CANCELLED AD/HILLER 12/7 Amdt 1

 Main Rotor Blade Fork AD/HILLER 12/8 Amdt 3

 Horizontal Stabiliser Spar - Inspection AD/HILLER 12/9 Amdt 1

 Main Rotor Blades - Inspection and Modification AD/HILLER 12/10

 Tail Rotor Blades - Replacement - CANCELLED AD/HILLER 12/11

 Main Rotor Blades - Inspection AD/HILLER 12/12 Amdt 2

 Transmission Gear - Inspection AD/HILLER 12/13 Amdt 2

 Main Rotor Blade Attach Pin Nut - Modification - CANCELLED AD/HILLER 12/14

 Mercury Clutch Sideplates - Inspection - CANCELLED AD/HILLER 12/15

 Cyclic Pitch Control Bracket Attach Bolts and Inserts - Inspection and  AD/HILLER 12/16

 Control Rotor Blade Assemblies AD/HILLER 12/17 Amdt 4

 Retirement Life - Critical Components AD/HILLER 12/18 Amdt 6

 Main Rotor Blades - Inspection AD/HILLER 12/19

 Mercury Clutch - Operational Limitations - CANCELLED AD/HILLER 12/20

 Main Rotor Drag Strut - Inspection - CANCELLED AD/HILLER 12/21

 Main Rotor Hub AD/HILLER 12/22 Amdt 3

 Main Rotor Blade, Anti Node Weight Retention - Inspection AD/HILLER 12/23 Amdt 1

 Main Rotor Blade Doubler & Honeycomb Areas AD/HILLER 12/24 Amdt 4

 Control Rod End Bearings - Inspection - CANCELLED AD/HILLER 12/25

 Rotor Tachometer Generator - Replacement AD/HILLER 12/26

 Outer Gimbal Forward Attach Fitting - Inspection AD/HILLER 12/27 Amdt 2

 Main Rotor Blade Anti-Node Bar - Inspection AD/HILLER 12/28

 Main Drive Torsion Coupling - Inspection and Replacement AD/HILLER 12/29 Amdt 4


 Main Rotor Assembly AD/HILLER 12/30 Amdt 2

 Inspection of Lower Gearcase Oil Jets - Soloy Gas Turbine Conversion -  AD/HILLER 12/31

 Tail Rotor Control Balance Cable - Inspection - CANCELLED AD/HILLER 12/32

 Tail Rotor Blade P/N 55073 - Inspection AD/HILLER 12/33

 Main Transmission Oil Filter AD/HILLER 12/34 Amdt 1

 Mercury Clutch Attach Bolts and Washers - Replacement - CANCELLED AD/HILLER 12/35 Amdt 1

 Main Drive Torsion Coupling P/N 21047-15 - Inspection of Lower Plate AD/HILLER 12/36 Amdt 1

 Soloy Conversion:  Power Turbine Governor Control System - Modification AD/HILLER 12/37

 Engine Mount Clevises AD/HILLER 12/38

 Consolidation of Early Airworthiness Directives AD/HILLER 12/39

 Main Rotor Assembly Drag Strut and T-T Bar Pin AD/HILLER 12/40 Amdt 2

 Tail Rotor Blades AD/HILLER 12/41

 Main Rotor Mast AD/HILLER 12/42

 Control System Linkage AD/HILLER 12/43

 

Overview

The Airworthiness Directives 2004 is a legislative instrument made by David Alan Villiers, the delegate of the Civil Aviation Safety Authority, under subregulation 39.001 (1) of the Civil Aviation Safety Regulations 1998. This instrument serves to revoke previously issued Airworthiness Directives pertaining to specific aircraft models and to re-issue them as separate instruments. The objective is to ensure that the directives are current and accurately reflect the latest safety standards and requirements. By remaking the directives, the Civil Aviation Safety Authority aims to maintain stringent oversight and compliance with aviation safety regulations, thus safeguarding public safety in the aviation sector. The Civil Aviation Safety Authority, through this instrument, addresses the need for updated and precise airworthiness directives for specified aircraft models, ensuring that all safety concerns and technical specifications are clearly defined and enforceable. The policy objective is to enhance aviation safety by providing clear, up-to-date directives that mandate specific actions and inspections to be carried out on aircraft, thereby preventing potential safety hazards and ensuring the continued airworthiness of the aircraft in question.

Scope and Application

The Airworthiness Directives 2004 applies to aircraft, specifically the Hiller UH-12 Series Helicopters, and regulates the airworthiness standards that must be met by these aircraft in Australia. As a legislative instrument under the Civil Aviation Safety Regulations 1998, it is enacted by the delegate of the Civil Aviation Safety Authority, David Alan Villiers. This instrument revokes existing airworthiness directives and re-makes them as separate instruments, ensuring that the directives are up to date and comply with the latest safety standards. The directives cover various aspects of the helicopters' maintenance and inspection, including the main rotor blades, transmission, and other critical components. The legislation has a national reach, applying across Australia, and does not specify any exclusions or exemptions. The application of this legislation can be extended or restricted through subordinate instruments, although no such extensions or restrictions are noted in this particular legislative instrument.

Key Provisions

The Airworthiness Directives 2004, made by the delegate of the Civil Aviation Safety Authority (CASA) under subregulation 39.001(1) of the Civil Aviation Safety Regulations 1998, primarily focus on the revocation and remaking of specific Airworthiness Directives related to the Hiller UH-12 Series Helicopters. The directive revokes the listed Airworthiness Directives in Schedule 1 (sections 2(a) and (b)), and re-makes each directive as separate instruments, ensuring they appear in the latest published edition of the directive. These Airworthiness Directives impose various obligations and requirements on the operators and maintainers of the Hiller UH-12 Series Helicopters. They mandate detailed inspections, modifications, replacements, and operational limitations for specific components of the helicopters, such as the main rotor blades, tail rotor blade assembly, transmission systems, and other critical parts. For example, AD/HILLER 12/1 requires the inspection of the main rotor blade, while AD/HILLER 12/3 mandates the provision of a vent hole in the tail rotor blade assembly. Failure to comply with the provisions of these Airworthiness Directives can result in significant consequences. While the legislation does not explicitly state penalties, non-compliance with CASA directives generally can lead to enforcement actions. Such actions may include fines, enforcement notices, or even grounding of the aircraft until the required actions are completed. The severity of the penalties can depend on the nature and extent of the non-compliance, as well as any resultant safety risks. Operators are expected to adhere to these directives to ensure the continued airworthiness and safety of the aircraft under their management.

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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.