AD/A330/84 - Flight Control Primary Computer Dispatch Limitations

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Legislation au F2008L00132 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 European Aviation Safety Authority (EASA) has issued AD 2008-0010-E affecting Airbus A330 series aircraft.  The EASA acts on behalf of France, the State of Design for these types.  CASA has assessed this AD and has issued Australian AD/A330/84, which will become effective on 18 January 2008. 

As this AD is issued because of Australia’s obligations under Convention on International Civil Aviation, and because it is issued in response to an AD raised by the relevant State of Design, no consultation of the Australian public has taken place on this AD.  The Office of Best Practice Regulation has determined that ADs do not require a Regulatory Impact Statement.

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

Overview

The Civil Aviation Act 1988 was enacted to establish a framework for the regulation of civil aviation in Australia, with an overarching aim to ensure the safety of air navigation. The Act empowers the Governor-General to make regulations in the interests of aviation safety, delegating authority to the Civil Aviation Safety Authority (CASA) to issue airworthiness directives (ADs) for specific types of aircraft or aeronautical products under regulation 39.001 of the Civil Aviation Safety Regulations 1998. These directives are critical tools for maintaining the continuing airworthiness of aircraft as mandated by international conventions, such as Annex 8 to the Convention on International Civil Aviation. The ADs issued by CASA are legislative instruments and must be assessed and potentially adopted from directives issued by the State of Design or other contracting states to ensure compliance with international safety standards. The legislative process for these ADs, particularly when responding to international directives, often bypasses public consultation and does not require a Regulatory Impact Statement, reflecting the urgent and internationally coordinated nature of aviation safety measures.

Scope and Application

The Civil Aviation Act 1988, supplemented by the Civil Aviation Safety Regulations 1998, governs the issuance of airworthiness directives (ADs) to ensure the safety of air navigation. These regulations empower the Civil Aviation Safety Authority (CASA) to issue ADs for specific types of aircraft or aeronautical products, as mandated by section 39.001 of the Civil Aviation Safety Regulations 1998. An AD is a legislative instrument, disallowable under section 46A of the Acts Interpretation Act 1901, and subject to the Legislative Instruments Act 2003. The Act applies to entities such as CASA, which acts as Australia’s national airworthiness authority, and to aircraft registered within Australia. The ADs are issued in accordance with international obligations under the Convention on International Civil Aviation, particularly Annex 8, which outlines the responsibilities of the State of Design and the State of Registry for the continuing airworthiness of aircraft. CASA must assess ADs issued by the State of Design and, if necessary, issue corresponding Australian ADs to enforce the required safety measures. This legislative framework ensures that ADs are issued efficiently in response to international safety directives without the need for public consultation or a Regulatory Impact Statement.

Key Provisions

The Civil Aviation Act 1988, particularly section 98, empowers the Governor-General to establish regulations for air navigation safety. Regulation 39.001 of the Civil Aviation Safety Regulations 1998 further allows the Civil Aviation Safety Authority (CASA) to issue airworthiness directives (ADs) concerning specific types of aircraft or aeronautical products. Importantly, subregulation 39.001(5) classifies ADs as disallowable instruments under the Acts Interpretation Act 1901, making them legislative instruments as per section 6 of the Legislative Instruments Act 2003. These directives are integral to maintaining the continuing airworthiness of aircraft as stipulated under Annex 8 to the Convention on International Civil Aviation, which designates the State of Design as responsible for the overall airworthiness of an aircraft type, and the State of Registry as responsible for the individual aircraft's continuing airworthiness. Obligation-wise, the State of Design is tasked with providing necessary information to ensure the continuing airworthiness of aircraft types, which is then assessed by CASA. If deemed appropriate, CASA issues Australian ADs that mandate the requirements set by the State of Design. For example, following the issuance of AD 2008-0010-E by the European Aviation Safety Authority (EASA) for Airbus A330 series aircraft, CASA issued Australian AD/A330/84. This process ensures that all aircraft registered in Australia comply with international safety standards. In this context, CASA's assessment and subsequent issuance of ADs are critical in upholding the safety and airworthiness of aircraft within Australia. Breaches of airworthiness directives can lead to significant civil and criminal consequences. The Civil Aviation Act 1988 and associated regulations impose strict requirements on aircraft operators, manufacturers, and maintenance providers to comply with ADs. Failure to comply can result in severe penalties, including fines and imprisonment. For instance, under section 45A of the Civil Aviation Act 1988, a person who contravenes an airworthiness directive may be liable for a fine of up to $210,000 for individuals and $1,050,000 for corporations. Additionally, CASA has the authority to issue enforcement notices and may also pursue legal action against non-compliant entities. These stringent measures underscore the importance of adhering to airworthiness directives to maintain the highest safety standards in aviation.

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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.