AD/M20/22 Amdt 1 - Empennage Attach Brackets - CANCELLED

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

Legislation au F2009L01326 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/M20/22 Amendment 1 affecting Mooney M20 model aeroplanes.  CASA has assessed this AD and as a result has cancelled Australian AD/M20/22 Amendment 1.  The cancellation will become effective on 7 May 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, Airframe and Structures, 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, provides the framework for ensuring the safety and efficiency of civil aviation in Australia. One of its key provisions is the ability for the Governor-General to make regulations that promote the safety of air navigation. This legislative power was exercised in the creation of the Civil Aviation Safety Regulations 1998, which include the authority for the Civil Aviation Safety Authority (CASA) to issue airworthiness directives (ADs) for specific types of aircraft or aeronautical products. The ADs serve as a mechanism to address continuing airworthiness issues and ensure compliance with safety standards, aligning with Australia's international obligations under the Convention on International Civil Aviation. The AD/M20/22 Amendment 1, issued by CASA for the Mooney M20 model aeroplanes, was subsequently cancelled due to the resolution of the unsafe condition it targeted, reflecting the dynamic nature of airworthiness management under the Act.

Scope and Application

The Civil Aviation Act 1988, as supplemented by the Civil Aviation Safety Regulations 1998, provides the framework for the regulation of airworthiness directives (ADs) within Australia. Under this legislation, the Civil Aviation Safety Authority (CASA) is authorised to issue ADs for specific types of aircraft or aeronautical products, in accordance with regulation 39.001 of the Civil Aviation Safety Regulations 1998. These ADs serve as legislative instruments under the Acts Interpretation Act 1901 and are essential for maintaining the continuing airworthiness of aircraft as mandated by Annex 8 to the Convention on International Civil Aviation. The State of Design, typically the manufacturer, has the overarching responsibility for ensuring the airworthiness of an aircraft type, while the State of Registry, in this case Australia, must adopt or develop requirements to ensure the continuing airworthiness of aircraft registered within its territory. Consequently, when a State of Design issues an AD, CASA, as Australia’s national airworthiness authority, is required to assess the directive and, if necessary, issue a corresponding Australian AD to enforce the specified requirements. The application of these directives is jurisdictional, applying to all aircraft and aeronautical products within Australia, and they are subject to the obligations and standards set by international conventions.

Key Provisions

The Civil Aviation Act 1988, along with the Civil Aviation Safety Regulations 1998, outlines the regulatory framework for ensuring the safety of air navigation in Australia. Under section 98 of the Act, the Governor-General has the authority to make regulations, while regulation 39.001 of the Safety Regulations empowers the Civil Aviation Safety Authority (CASA) to issue airworthiness directives (ADs) for specific types of aircraft or aeronautical products. These ADs are formal legislative instruments that serve as a crucial means for maintaining the continuing airworthiness of aircraft, as stipulated in Annex 8 to the Convention on International Civil Aviation. The State of Design, responsible for the aircraft type, must provide necessary information to ensure the continuing airworthiness, and CASA, as Australia's national airworthiness authority, must review and, if appropriate, issue corresponding Australian ADs. The obligations under this Act and its regulations are multifaceted. The State of Design holds the primary responsibility for the ongoing airworthiness of an aircraft type, which includes providing essential information to States of Registry. Conversely, the State of Registry, which in Australia is represented by CASA, must develop or adopt requirements to ensure the continuing airworthiness of individual aircraft registered within its jurisdiction. This includes the duty to assess and act on ADs issued by the State of Design, ensuring they meet Australian safety standards. The cancellation of AD/M20/22 Amendment 1, for example, highlights the importance of CASA’s role in maintaining air safety by ensuring that aircraft on the Australian Register comply with necessary safety standards. Breaches of the requirements set out in the Civil Aviation Act 1988 and the Civil Aviation Safety Regulations 1998 can result in significant civil and criminal consequences. For instance, failure to comply with an airworthiness directive can lead to penalties under the Act, including fines and imprisonment. The specific penalties can vary depending on the severity of the breach and the intent behind it. Additionally, CASA has the authority to take enforcement actions, which can include grounding aircraft that do not meet safety standards, thereby preventing unsafe aircraft from operating in Australian airspace. In conclusion, the provisions of the Civil Aviation Act 1988 and the Civil Aviation Safety Regulations 1998 are designed to uphold the highest safety standards in civil aviation. They mandate clear responsibilities for both the State of Design and the State of Registry, and empower CASA to enforce these standards through the issuance and enforcement of airworthiness directives. The legal framework ensures that aircraft registered in Australia meet stringent safety requirements, thereby protecting the public and maintaining the integrity of the nation's airspace.

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Aviation Law
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Regulation
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Regulatory Standards
Enforcement Powers
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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.