AD/CON/45 Amdt 3 - Camshaft Oil Transfer Holes - CANCELLED

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Legislation au F2009L02353 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/CON/45 Amendment 3 affecting Teledyne Continental Motors IO-520 series engines.  CASA has assessed this AD and as a result has cancelled Australian AD/CON/45 Amendment 3.  The cancellation will become effective on 2 July 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 Australian Parliament, was established to provide a comprehensive framework for civil aviation regulation in Australia, ensuring safety and efficiency in the national airspace. This Act empowers the Governor-General to issue regulations that promote the safety of air navigation, delegating authority to the Civil Aviation Safety Authority (CASA) to implement these regulations through instruments such as airworthiness directives (ADs). The ADs, as outlined in regulation 39.001 of the Civil Aviation Safety Regulations 1998, serve as legislative instruments for enforcing airworthiness standards and are aligned with the Convention on International Civil Aviation's mandate on continuing airworthiness. The policy objective of this legislative framework is to maintain high safety standards in Australian civil aviation, harmonising with international obligations and ensuring that the State of Registry for individual aircraft fulfills its responsibility for ongoing airworthiness.

Scope and Application

The Civil Aviation Act 1988, in conjunction with the Civil Aviation Safety Regulations 1998, facilitates the issuance of airworthiness directives (ADs) to ensure the safety of air navigation. Specifically, section 98 of the Civil Aviation Act 1988 allows the Governor-General to make regulations for the safety of air navigation, while regulation 39.001 of the Civil Aviation Safety Regulations 1998 empowers the Civil Aviation Safety Authority (CASA) to issue ADs for kinds of aircraft or aeronautical products. These directives, including their equivalents, are the standard form of continuing airworthiness information, as outlined in Annex 8 to the Convention on International Civil Aviation. The State of Design is responsible for the continuing airworthiness of an aircraft type, while the State of Registry must ensure the continuing airworthiness of individual aircraft. CASA, as Australia’s national airworthiness authority, must assess and, if appropriate, issue Australian ADs to enforce the requirements of the State of Design. In accordance with the Legislative Instruments Act 2003, ADs are considered legislative instruments and are subject to disallowance under section 46A of the Acts Interpretation Act 1901. The issuance and cancellation of ADs, such as AD/CON/45 Amendment 3 affecting Teledyne Continental Motors IO-520 series engines, are carried out by CASA without public consultation or a Regulatory Impact Statement, as determined by the Office of Best Practice Regulation.

Key Provisions

The Civil Aviation Act 1988 and the Civil Aviation Safety Regulations 1998 collectively establish the framework for ensuring the safety of air navigation in Australia. Under section 98 of the Civil Aviation Act 1988, the Governor-General is empowered to issue regulations that are necessary for the safety of air navigation. Specifically, regulation 39.001 of the Civil Aviation Safety Regulations 1998 allows the Civil Aviation Safety Authority (CASA) to issue airworthiness directives (ADs) for certain types of aircraft or aeronautical products. These ADs are legislative instruments, as per section 46A of the Acts Interpretation Act 1901 and section 6 of the Legislative Instruments Act 2003. Airworthiness directives are essential tools for ensuring that aircraft and aeronautical products maintain their airworthiness standards. The obligations and requirements imposed by the Act and the Regulations are stringent and are aimed at maintaining the highest safety standards in civil aviation. The State of Design, which is responsible for the design of an aircraft, must ensure the continuing airworthiness of the aircraft type and provide necessary information to the States of Registry, as per Annex 8 to the Convention on International Civil Aviation. The States of Registry, on the other hand, are responsible for ensuring the continuing airworthiness of individual aircraft within their jurisdiction. In the context of Australia, CASA, as the national airworthiness authority, must assess any ADs issued by the State of Design and, if necessary, issue an Australian AD to enforce the required safety measures. The recent cancellation of AD/CON/45 Amendment 3 for Teledyne Continental Motors IO-520 series engines is an example of this process, demonstrating CASA’s commitment to maintaining airworthiness standards. In terms of legal consequences, the Civil Aviation Safety Regulations 1998 do not require public consultation or a Regulatory Impact Statement for ADs, as determined by the Office of Best Practice Regulation. However, the non-compliance with an AD can have serious ramifications. Although the specific penalties for breaching an AD are not outlined in the provided text, non-compliance with airworthiness requirements can lead to civil and criminal penalties under the Civil Aviation Act 1988. Civil penalties can include fines and other sanctions, while criminal penalties can include imprisonment, depending on the severity and impact of the non-compliance. These measures underscore the importance of adhering to airworthiness directives to ensure the safety of air navigation.

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Aviation Law
Instrument
Regulation
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Definitions & Interpretation
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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.