AD/AT 800/8 - Hopper Rinse Tank Shelf Attachment

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Legislation au F2006L03613 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 US FAA has issued AD 2006-20-10 affecting Airtractor AT800 model aircraft.  The USA is the State of Design for this type.  CASA has assessed this AD and has issued Australian AD/AT 800/8, which will become effective on 23 November 2006. 

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 Regulatory Review has determined that ADs do not require a Regulatory Impact Statement.

The AD has been made by the Manager, Airframes in the Manufacturing, Certification and New Technologies Office, on behalf of CASA, in accordance with subsection 84A (2) of the Act.

Overview

The Civil Aviation Act 1988, enacted to establish a comprehensive regulatory framework for civil aviation in Australia, addresses the need for ensuring the safety of air navigation and the continuing airworthiness of aircraft. Under this Act, the Governor-General has the authority to create regulations aimed at maintaining the safety of air navigation. The Civil Aviation Safety Regulations 1998, which were made under the authority of the Act, empower the Civil Aviation Safety Authority (CASA) to issue airworthiness directives (ADs) for specific types of aircraft or aeronautical products. These ADs serve as legislative instruments that mandate compliance to ensure aircraft safety, reflecting Australia's commitment to international civil aviation standards as outlined in the Convention on International Civil Aviation. CASA, acting as Australia's national airworthiness authority, evaluates ADs issued by the States of Design and, where necessary, issues corresponding Australian ADs to enforce the required safety measures.

Scope and Application

The Civil Aviation Act 1988 and its associated regulations, particularly the Civil Aviation Safety Regulations 1998, provide the legislative framework for the issuance of airworthiness directives (ADs) in Australia. Under this Act, the Governor-General has the authority to make regulations to ensure the safety of air navigation, and the Civil Aviation Safety Authority (CASA) is empowered to issue ADs concerning specific types of aircraft or aeronautical products. These ADs are considered legislative instruments and are subject to disallowance under the Acts Interpretation Act 1901. Furthermore, in line with the Convention on International Civil Aviation, the State of Design holds responsibility for the continuing airworthiness of an aircraft type and must provide necessary information to States of Registry, which in Australia is CASA. CASA is thus mandated to assess the ADs issued by the State of Design and, when necessary, issue corresponding Australian ADs to enforce the required safety measures. These ADs, such as AD/AT 800/8 in response to FAA AD 2006-20-10 for the Airtractor AT800 model, are implemented without public consultation as they arise from international obligations and are not subject to a Regulatory Impact Statement. This legislative process ensures that the continuing airworthiness of aircraft registered in Australia is maintained in accordance with international standards and safety requirements.

Key Provisions

The Civil Aviation Act 1988, in conjunction with the Civil Aviation Safety Regulations 1998, empowers the Civil Aviation Safety Authority (CASA) to issue airworthiness directives (ADs) concerning specific types of aircraft or aeronautical products. Regulation 39.001 of the Civil Aviation Safety Regulations 1998 grants CASA this authority, ensuring the safety of air navigation as mandated by section 98 of the Act. These ADs are considered disallowable instruments under section 46A of the Acts Interpretation Act 1901 and are legislative instruments as per section 6 of the Legislative Instruments Act 2003. Entities governed by the Civil Aviation Act 1988, particularly those responsible for the airworthiness of aircraft, must adhere to the ADs issued by CASA. The State of Design has the primary responsibility for the continuing airworthiness of an aircraft type, providing necessary information to the States of Registry. The State of Registry, in turn, must develop or adopt requirements to ensure the continuing airworthiness of aircraft within their jurisdiction. When the State of Design issues an AD, such as the US FAA’s AD 2006-20-10 for Airtractor AT800 model aircraft, CASA assesses this information and may issue an Australian AD, like AD/AT 800/8, to enforce the requirements domestically. Failure to comply with ADs can result in significant consequences. Under the Civil Aviation Act 1988, non-compliance with ADs can lead to civil or criminal penalties. The Act provides for substantial fines, with the maximum penalties outlined in section 224 for contravening regulations, which may include significant financial penalties and, in severe cases, imprisonment. Additionally, operators found in breach of ADs may face operational restrictions or revocation of their airworthiness certificates, thereby impacting their ability to conduct flight operations. In summary, the Civil Aviation Act 1988 and Civil Aviation Safety Regulations 1998 establish a robust framework for issuing and enforcing ADs to ensure air safety. The ADs, as legislative instruments, mandate specific actions to maintain airworthiness, and non-compliance can result in severe civil and criminal penalties, reinforcing the importance of adherence to these directives for all stakeholders involved in civil 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.