AD/TB10/1 Amdt 4 - Airworthiness Limitations - CANCELLED

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Legislation au F2009L02800 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, the Civil Aviation Safety Authority (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.

CASA or its predecessors issued AD/TB10/1 Amdt 4 affecting SOCATA TB9 and TB10 aircraft.  CASA has reviewed this AD and as a result has cancelled it.  The cancellation will become effective on 30 July 2009.  No replacement AD is required.

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 was enacted to regulate the safety and efficiency of civil aviation in Australia. The Act empowers the Governor-General to make regulations aimed at ensuring the safety of air navigation. Under this authority, the Civil Aviation Safety Regulations 1998 were established, allowing the Civil Aviation Safety Authority (CASA) to issue airworthiness directives (ADs) for specific types of aircraft or aeronautical products. These ADs serve as a means to ensure the continuing airworthiness of aircraft, aligning with international standards set forth in Annex 8 of the Convention on International Civil Aviation. The Act’s purpose is to uphold the highest safety standards in civil aviation, reflecting Australia’s commitment to international obligations and the overarching responsibility of the State of Registry for an aircraft’s continuing airworthiness. The cancellation of a specific AD affecting SOCATA TB9 and TB10 aircraft is a direct consequence of Australia’s adherence to these international obligations, demonstrating the regulatory framework’s responsiveness to global aviation safety requirements.

Scope and Application

The Civil Aviation Act 1988 and its associated Civil Aviation Safety Regulations 1998 provide the framework for the issuance of airworthiness directives (ADs) in Australia, ensuring the safety of air navigation as per section 98 of the Act. Regulation 39.001 of these regulations empowers the Civil Aviation Safety Authority (CASA) to issue ADs for specific kinds of aircraft or aeronautical products, with such directives being classified as disallowable instruments under section 46A of the Acts Interpretation Act 1901 and considered legislative instruments pursuant to the Legislative Instruments Act 2003. The scope of the ADs extends to maintaining the continuing airworthiness of aircraft, a responsibility primarily vested in the State of Registry under Annex 8 of the Convention on International Civil Aviation. As such, CASA, acting on behalf of the State of Registry, has the authority and obligation to issue or cancel ADs, such as the recent cancellation of AD/TB10/1 Amdt 4 for SOCATA TB9 and TB10 aircraft, effective from 30 July 2009. This cancellation aligns with Australia's international obligations and does not necessitate public consultation or a Regulatory Impact Statement. The authority to issue or cancel such directives is exercised by the Manager, Airframe and Structures in the Airworthiness Engineering Group at CASA, in accordance with the provisions of the Act.

Key Provisions

The Civil Aviation Act 1988, along with the Civil Aviation Safety Regulations 1998, provides the legislative framework for the issuance and management of airworthiness directives (ADs) in Australia. Under section 98 of the Civil Aviation Act 1988, the Governor-General has the authority to create regulations for the safety of air navigation, while regulation 39.001 of the Civil Aviation Safety Regulations 1998 specifically empowers the Civil Aviation Safety Authority (CASA) to issue ADs for particular types of aircraft or aeronautical products. Furthermore, subregulation 39.001(5) designates ADs as disallowable instruments under section 46A of the Acts Interpretation Act 1901, thus classifying them as legislative instruments in accordance with section 6 of the Legislative Instruments Act 2003. The obligations and requirements imposed by the Act and the Regulations on the parties involved include the responsibility of the State of Design to maintain the continuing airworthiness of an aircraft type, providing necessary information to the State of Registry. The State of Registry, in turn, must establish or adopt requirements to ensure the ongoing airworthiness of the aircraft under its jurisdiction. These provisions ensure a coordinated approach to aircraft safety, aligning with Annex 8 to the Convention on International Civil Aviation. In the specific instance of SOCATA TB9 and TB10 aircraft, CASA issued AD/TB10/1 Amdt 4, which has since been cancelled as of 30 July 2009, without the need for public consultation or a Regulatory Impact Statement due to Australia’s obligations under the Convention on International Civil Aviation. The Civil Aviation Safety Regulations 1998 and the Civil Aviation Act 1988 outline specific consequences for non-compliance with ADs. Failure to adhere to the directives issued by CASA can result in significant legal and financial repercussions. The Act does not explicitly state the maximum penalties for breach, but non-compliance can lead to civil or criminal penalties under other sections of the Act or related legislation. The seriousness of the consequences underscores the importance of adhering to ADs to ensure the safety of air navigation. CASA's authority to issue and enforce ADs is thus a critical component of Australia's aviation safety framework, reflecting the high standards expected under international aviation conventions.

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Area of Law
Administrative Law
Aviation Law
Regulatory Standards
Instrument
Regulation
Concepts
Definitions & Interpretation
Enforcement Powers
Regulatory Standards
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Airworthiness Directives

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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.