Airworthiness Directives 2004 - Revocation and Remaking - Propellers - Variable Pitch - Dowty Rotol

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Legislation au F2006B07988 In force Legislative Instrument

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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

 Propellers - Variable Pitch - Dowty Rotol

 AD Name AD Number

 Pitch Lock Cylinder - Modification AD/PR/1

 Propeller Blade - Rework AD/PR/2 Amdt 1

 Pitch Lock Support Sleeve - Modification AD/PR/3

 Application of Pre-Primer to Propeller Blades AD/PR/4

 Propeller Cylinder - Inspection - CANCELLED AD/PR/5 Amdt 2

 Retirement Lives of Components AD/PR/6 Amdt 12

 Operating Cylinder - Replacement AD/PR/7

 Hub Driving Centre - Modification AD/PR/8

 Hub Driving Centre - Inspection AD/PR/9

 Blade Retaining Bolts - Inspection - CANCELLED AD/PR/10

 Blade Operating Pin - Inspection for Cracking AD/PR/11 Amdt 1

 Blade Eyebolt and Operating Link Group - Inspection and/or Rework AD/PR/12

 Pitch Lock Assembly - Modification AD/PR/13

 Blade Retaining Bolt Locking Segment - Replacement AD/PR/14

 Blade Bearings - Overhaul Procedures AD/PR/15

 Inspection of Hub Driving Centres for Incorrect Machining During Modification AD/PR/16 Amdt 1

 Hub Driving Centre Flange - Inspection AD/PR/17

 Hub and Driving Centre Assembly - Inspection of Cadmium Plating AD/PR/18

 Propeller Blade Corrosion - Inspection and Repair AD/PR/19 Amdt 1

 Hub Front Face to Snout Radius - Inspection AD/PR/20

 Hub Assembly - Inspection of Blade Sockets AD/PR/21

 Pitch Lock Cylinder and Support Sleeves - Inspection AD/PR/22

 Feathering Springs - Operational Inspection AD/PR/23

 Beta Tube AD/PR/24 Amdt 6

 Hub Wall Cracking AD/PR/25 Amdt 9

 Front Wall/Snout Radius Cracking AD/PR/26 Amdt 1

 Beta Tube AD/PR/27 Amdt 1

 Hub Switches AD/PR/28 Amdt 1

 Operating Cylinder Retaining Bolts AD/PR/29 Amdt 5


 Hub Mounting Face Dowel Inspection Following Propeller Overtorque -  AD/PR/30

 Propeller Blade Bearings - CANCELLED AD/PR/31

 Blade Pitch Seizure AD/PR/32

 Hub Assembly AD/PR/33 Amdt 2

 Hub Through Bolts AD/PR/34 Amdt 1

 Propeller Hub Wall Cracking AD/PR/35 Amdt 2

 

Overview

The Airworthiness Directives 2004, issued under the authority of the Civil Aviation Safety Authority (CASA) through the Civil Aviation Safety Regulations 1998, were enacted to ensure the ongoing safety and airworthiness of aircraft propellers, particularly those produced by Dowty Rotol. The directives were designed to address specific safety concerns and technical issues related to the operation and maintenance of these propellers. CASA, as the regulatory body responsible for aviation safety in Australia, established these directives to provide clear and enforceable guidelines for maintaining the safety standards of aircraft components. The overarching policy objective was to ensure that aircraft and their components meet the required safety standards, thereby protecting the public and maintaining the integrity of the aviation industry. The legislative instrument, signed by David Alan Villiers as the delegate of CASA, involved the revocation and remaking of existing airworthiness directives to align them with the latest safety requirements and technical updates. Each directive was meticulously re-made to reflect the most current safety protocols and operational standards, ensuring that any previous directives that had become outdated or ineffective were replaced with more robust and relevant safety measures. This approach underscores CASA's commitment to continuous improvement in aviation safety and its dedication to providing clear, actionable guidance to aviation stakeholders.

Scope and Application

The Airworthiness Directives 2004, issued under the authority of the Civil Aviation Safety Authority (CASA) by David Alan Villiers, pertain to various airworthiness directives concerning propellers, specifically those of variable pitch types manufactured by Dowty Rotol. These directives apply to aircraft operators, maintenance personnel, and any other relevant parties who are responsible for ensuring the compliance of aircraft and their components with the specified airworthiness standards. The geographic scope of these directives is national, as they apply across Australia in accordance with the Civil Aviation Safety Regulations 1998. The directives cover a broad range of issues, including modifications, inspections, and operational checks on various propeller components, and are designed to enhance the safety and airworthiness of aircraft. The document revokes and re-makes specific directives listed in Schedule 1, ensuring that the latest safety requirements and procedures are in effect. The application of these directives is extended or restricted through subordinate instruments, which may provide further detail or specific conditions for compliance.

Key Provisions

The Airworthiness Directives 2004 (F2006B07988) primarily involve the revocation and remaking of specific Airworthiness Directives as outlined in Schedule 1. This legislative instrument serves to update and ensure the currency of airworthiness standards for aircraft components, particularly those related to propellers. The directives in question pertain to various modifications, inspections, and maintenance protocols for propellers and their associated components, such as pitch lock cylinders, blade retaining bolts, and hub assemblies. Each directive in Schedule 1 is re-made in the same form as it appears in the latest published edition, ensuring that the regulations remain up-to-date and relevant. The obligations imposed by these Airworthiness Directives are extensive and specific, focusing on the maintenance and inspection requirements for propeller components. Operators and maintenance personnel must comply with the detailed procedures and standards set out in each directive. For instance, AD/PR/1 requires the modification of the pitch lock cylinder, while AD/PR/3 mandates the replacement of the blade retaining bolt locking segment. These obligations ensure that aircraft components are maintained in a safe and airworthy condition, reducing the risk of in-flight failures and enhancing overall aviation safety. Failure to comply with these Airworthiness Directives can result in significant legal consequences. The Civil Aviation Safety Regulations 1998, under which this legislative instrument operates, provide for both civil and criminal penalties for non-compliance. Civil penalties can include substantial fines, while criminal penalties can result in imprisonment, reflecting the seriousness of ensuring compliance with airworthiness standards. The exact penalties depend on the nature and severity of the breach, with maximum penalties outlined in the relevant sections of the Civil Aviation Safety Regulations 1998. Compliance is mandatory to avoid these severe consequences and ensure the safety and reliability of aircraft operations.

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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.