AD/R22/18 - Actuator Drive Screw A506-1 - Replacement - CANCELLED

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

Legislation au F2009L01512 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/R22/18 affecting Robinson R22 helicopters.  CASA has reviewed this AD and as a result has cancelled it.  The cancellation will become effective on 7 May 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, 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 was enacted to provide a legal framework for ensuring the safety and efficiency of civil aviation in Australia. It empowers the Governor-General to make regulations, such as the Civil Aviation Safety Regulations 1998, which delegate authority to the Civil Aviation Safety Authority (CASA) to issue airworthiness directives (ADs) concerning aircraft types or aeronautical products. These ADs, as legislative instruments, aim to maintain and enhance aviation safety in alignment with international standards, particularly under Annex 8 of the Convention on International Civil Aviation. The Act was introduced to address the need for a comprehensive regulatory structure governing the safety and airworthiness of aircraft within Australia, reflecting both national and international obligations. The Civil Aviation Safety Regulations 1998 further operationalise the Act by enabling CASA to issue directives that mandate specific maintenance, repair, or replacement actions to ensure the continuing airworthiness of aircraft, thereby safeguarding public safety and fulfilling Australia's commitments under international aviation agreements.

Scope and Application

The Civil Aviation Act 1988, supplemented by the Civil Aviation Safety Regulations 1998, provides the legislative framework for ensuring the safety of air navigation in Australia. Specifically, regulation 39.001 of the Civil Aviation Safety Regulations 1998 empowers the Civil Aviation Safety Authority (CASA) to issue airworthiness directives (ADs) for specified kinds of aircraft or aeronautical products. These ADs serve as legislative instruments, disallowable under section 46A of the Acts Interpretation Act 1901 and regulated under the Legislative Instruments Act 2003. The ADs are integral to the continuing airworthiness of aircraft types as stipulated in Annex 8 to the Convention on International Civil Aviation, where the State of Design has the primary responsibility for providing necessary information to ensure airworthiness, while the State of Registry is tasked with implementing and enforcing airworthiness requirements. CASA, acting within its jurisdiction, issued an airworthiness directive affecting Robinson R22 helicopters, which has since been cancelled in compliance with Australia's international obligations under the Convention on International Civil Aviation. This cancellation, effective from 7 May 2009, does not require consultation with the public or a Regulatory Impact Statement as determined by the Office of Best Practice Regulation.

Key Provisions

The Civil Aviation Safety Regulations 1998, under regulation 39.001, empower the Civil Aviation Safety Authority (CASA) to issue airworthiness directives (ADs) for specific kinds of aircraft or aeronautical products. These directives are legislative instruments and can be disallowed under section 46A of the Acts Interpretation Act 1901. According to subregulation 39.001(5), ADs fall under the purview of the Legislative Instruments Act 2003. This regulatory framework is designed to ensure the continuing airworthiness of aircraft, as mandated by Annex 8 to the Convention on International Civil Aviation, which assigns the State of Design the responsibility for the overall airworthiness of an aircraft type and requires them to provide necessary information to the States of Registry. Under the Civil Aviation Safety Regulations, the State of Registry of an individual aircraft bears the responsibility for its ongoing airworthiness. This entails developing or adopting requirements to ensure that aircraft remain airworthy throughout their operational life. CASA, acting on behalf of Australia, issued AD/R22/18 concerning Robinson R22 helicopters. Following a review, CASA has decided to cancel this directive, effective 7 May 2009. This cancellation aligns with Australia's obligations under the Convention on International Civil Aviation and does not necessitate consultation with the Australian public. The Office of Best Practice Regulation has also determined that ADs do not require a Regulatory Impact Statement. The cancellation of AD/R22/18 was authorised by the Manager, Systems and New Technologies in the Airworthiness Engineering Group, on behalf of CASA, in accordance with subsection 84A(2) of the Civil Aviation Act 1988. This process ensures that the directive aligns with Australia's international obligations and domestic safety standards. The cancellation signifies that no replacement AD is necessary, reflecting a comprehensive review of the safety requirements for Robinson R22 helicopters. Failure to comply with airworthiness directives can lead to serious safety implications, including potential civil and criminal consequences. While the specific penalties for non-compliance are not detailed in this legislation, it is widely understood that such violations could result in significant fines or other regulatory actions. The overarching goal is to ensure that all aircraft remain airworthy, thereby safeguarding public safety and maintaining the integrity of the aviation system. CASA's role in issuing and managing these directives is critical in upholding these standards.

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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.