AD/PMC/18 Amdt 1 - Propeller Hub - Modification or Replacement - CANCELLED

Administered by Department of Infrastructure, Transport, Regional Development, Communications, Sport and the Arts

Legislation au F2009L00930 Not in force Legislative Instrument

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CIVIL AVIATION ACT 1988

CIVIL AVIATION SAFETY REGULATIONS 1998

ISSUE OF AIRWORTHINESS DIRECTIVE

Under section 98 of the Civil Aviation Act 1988, the Governor-General may make regulations for the purposes of the Act and in the interests of the safety of air navigation.  Under regulation 39.001 of the Civil Aviation Safety Regulations 1998, CASA may issue airworthiness directives (ADs) for kinds of aircraft or aeronautical products.  Subregulation 39.001(5) of the Civil Aviation Safety Regulations 1998 provides that an AD is a disallowable instrument for the purposes of section 46A of the Acts Interpretation Act 1901. Therefore, in accordance with section 6 of the Legislative Instruments Act 2003, an AD is a legislative instrument.

Under Annex 8 to the Convention on International Civil Aviation, the State of Design has overall responsibility for continuing airworthiness of an aircraft type, and must provide any information necessary to ensure the continuing airworthiness of a type to appropriate States of Registry.  ADs (and their equivalents) are the most common form of continuing airworthiness information, and are issued by most ICAO Contracting States.

The State of Registry of an individual aircraft is responsible for its continuing airworthiness.  Under Annex 8, the State of Registry must develop or adopt requirements to ensure the continuing airworthiness of aircraft.  When a State of Design issues an AD against a type of aircraft on the Australian Register, CASA, as Australia’s national airworthiness authority, must assess that information and, if appropriate, issue an Australian AD to mandate the requirements of the State of Design.

The Civil Aviation Safety Authority or its predecessors issued AD/PMC/18 Amendment 1 affecting McCauley propeller models 2D34C8 and 2D34C8-A, -J and
-K; 2D34C53 and 2D34C53-A, B2D34C53-J and -K; 2D34CT69 and B2D34CT69-J and -K.  CASA has assessed this AD and as a result has cancelled Australian AD/PMC/18 Amendment 1.  The cancellation will become effective on 9 April 2009.  No replacement AD is required, as the unsafe condition no longer exists.

As this AD has been cancelled because of Australia’s obligations under the Convention on International Civil Aviation, no consultation with the Australian public has taken place on this AD cancellation.  The Office of Best Practice Regulation has determined that ADs do not require a Regulatory Impact Statement.

 

The AD has been made by the Manager, Systems and New Technologies, in the Airworthiness Engineering Group, on behalf of CASA, in accordance with subsection 84A (2) of the Act.

Overview

The Civil Aviation Act 1988, enacted by the Commonwealth Parliament, was introduced to provide a comprehensive legislative framework governing civil aviation in Australia, aiming to ensure the safety and efficiency of air navigation. In line with this, the Civil Aviation Safety Regulations 1998 were established to further regulate various aspects of aviation safety, including the issuance of airworthiness directives (ADs). Section 98 of the Civil Aviation Act 1988 empowers the Governor-General to make regulations for the safety of air navigation, with regulation 39.001 of the Civil Aviation Safety Regulations 1998 authorising the Civil Aviation Safety Authority (CASA) to issue ADs for certain types of aircraft or aeronautical products. The objective of these regulations is to maintain the highest standards of safety and airworthiness in accordance with international obligations, particularly under Annex 8 to the Convention on International Civil Aviation. The ADs serve as a crucial tool for ensuring the continuing airworthiness of aircraft, with the State of Design having primary responsibility for providing necessary information, while the State of Registry implements these requirements domestically.

Scope and Application

The Civil Aviation Act 1988, as amended by the Civil Aviation Safety Regulations 1998, applies to various entities and persons involved in the aviation industry, primarily focusing on ensuring the safety of air navigation. Under this legislative framework, the Civil Aviation Safety Authority (CASA) is empowered to issue airworthiness directives (ADs) that are binding on types of aircraft and aeronautical products registered in Australia. These directives are legislative instruments that fall under the purview of the Acts Interpretation Act 1901 and the Legislative Instruments Act 2003. The Act and associated regulations apply nationally, extending to all aircraft registered in Australia and those manufactured or designed within the country, aligning with international standards set by the International Civil Aviation Organization (ICAO). The scope of the Act includes mandates for the State of Design and the State of Registry to ensure continuing airworthiness of aircraft, with CASA acting as the national authority to enforce these standards. The application of these regulations is further extended through subordinate instruments, ensuring comprehensive oversight and compliance in the aviation sector.

Key Provisions

The main operative sections of this legislation outline the issuance and cancellation of airworthiness directives (ADs) as stipulated under section 98 of the Civil Aviation Act 1988 and regulation 39.001 of the Civil Aviation Safety Regulations 1998. Under these provisions, the Civil Aviation Safety Authority (CASA) is empowered to issue ADs for specific types of aircraft or aeronautical products to ensure their continuing airworthiness. This process is governed by the international obligations under Annex 8 to the Convention on International Civil Aviation, which mandates that the State of Design must provide necessary information to ensure the continuing airworthiness of an aircraft type. Consequently, the State of Registry must develop or adopt requirements to ensure the continuing airworthiness of aircraft within its jurisdiction. In the case of Australia, CASA, as the national airworthiness authority, assesses information from the State of Design and may issue an Australian AD if appropriate. The obligations imposed by the Civil Aviation Safety Regulations 1998 on the parties governed by this legislation are primarily focused on ensuring the continuing airworthiness of aircraft. CASA, as the regulatory authority, must review and assess any AD issued by the State of Design and determine whether an Australian AD is necessary. If an AD is deemed necessary, CASA must issue it to mandate the requirements specified by the State of Design. This ensures that Australian aircraft meet the necessary safety standards and comply with international aviation safety regulations. Furthermore, the State of Registry, in this case, Australia, must ensure that all aircraft registered within its jurisdiction adhere to these ADs to maintain their airworthiness. The Act also outlines the consequences for non-compliance with the ADs. While the specific civil or criminal penalties for breaching ADs are not detailed in the text, it is implied that non-compliance with airworthiness directives can lead to significant consequences. Failure to adhere to ADs can result in severe safety risks, potentially leading to aircraft accidents or incidents. CASA, as the enforcement body, may take regulatory action against operators who fail to comply with ADs, which could include fines, suspension of airworthiness certificates, or other enforcement measures. Although the text does not specify maximum penalties, it is clear that non-compliance with airworthiness directives carries substantial implications for the safety of air navigation and the aviation industry as a whole.

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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.