AD/B-2/7 - Main Rotor Blade Dampers - Installation - CANCELLED

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Legislation au F2009L01913 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/B-2/7 affecting Brantly B-2 helicopters.  CASA has assessed this AD and as a result has cancelled AD/B-2/7.  The cancellation will become effective on 4 June 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 Commonwealth Parliament, serves as the primary legislative framework governing civil aviation in Australia, with a key focus on ensuring the safety of air navigation. The Act empowers the Governor-General to establish regulations that safeguard the interests of air navigation safety. The Civil Aviation Safety Regulations 1998, made under this Act, further elaborate on these safety measures, particularly in relation to the issuance of airworthiness directives (ADs) that mandate compliance with safety standards for aircraft and aeronautical products. These ADs, as specified in regulation 39.001 of the Civil Aviation Safety Regulations 1998, are legislative instruments subject to disallowance under the Acts Interpretation Act 1901. The Civil Aviation Safety Authority (CASA) plays a crucial role in ensuring the continuing airworthiness of aircraft registered in Australia, in accordance with international obligations under the Convention on International Civil Aviation. In line with these international standards, CASA has the authority to issue and cancel ADs to address safety concerns, as demonstrated by the recent cancellation of AD/B-2/7 for Brantly B-2 helicopters, effective 4 June 2009, due to the resolution of the previously identified unsafe condition.

Scope and Application

The Civil Aviation Safety Regulations 1998, under section 39.001, empower the Civil Aviation Safety Authority (CASA) to issue airworthiness directives (ADs) for specified kinds of aircraft or aeronautical products. These directives are legislative instruments, as per section 6 of the Legislative Instruments Act 2003, and are subject to disallowance under section 46A of the Acts Interpretation Act 1901. The ADs are pivotal for ensuring the continuing airworthiness of aircraft types, with the State of Design bearing primary responsibility for providing necessary information, in alignment with Annex 8 to the Convention on International Civil Aviation. For aircraft registered in Australia, CASA assumes the role of the State of Registry, tasked with assessing and potentially issuing Australian ADs in response to directives from States of Design. This mechanism is exemplified by the cancellation of AD/B-2/7 concerning Brantly B-2 helicopters, reflecting CASA's commitment to aviation safety and compliance with international obligations. Given the regulatory nature of ADs, they do not require a Regulatory Impact Statement, and no public consultation was undertaken for the cancellation of AD/B-2/7, as determined by the Office of Best Practice Regulation. The issuance of such directives is executed by authorised personnel within CASA, adhering to the statutory requirements outlined in the Civil Aviation Act 1988.

Key Provisions

The Civil Aviation Act 1988, as supplemented by the Civil Aviation Safety Regulations 1998, allows the Governor-General to establish regulations that ensure the safety of air navigation. Section 98 of the Act grants the authority to make such regulations, which are intended to uphold the safety standards in the aviation sector. Regulation 39.001 of the Civil Aviation Safety Regulations 1998 specifically empowers the Civil Aviation Safety Authority (CASA) to issue airworthiness directives (ADs) for specified types of aircraft or aeronautical products. Subregulation 39.001(5) further clarifies that an AD is a disallowable instrument under section 46A of the Acts Interpretation Act 1901, and thus a legislative instrument as per section 6 of the Legislative Instruments Act 2003. The obligations imposed by these regulations on the parties involved, particularly CASA, are significant. CASA is tasked with assessing information provided by the State of Design regarding any ADs issued for aircraft types registered in Australia. If CASA determines that the information is applicable and necessary, it must issue an Australian AD to mandate the requirements set forth by the State of Design. This ensures that the continuing airworthiness of aircraft registered in Australia is maintained according to international standards. Moreover, Annex 8 to the Convention on International Civil Aviation mandates that the State of Design has overall responsibility for the continuing airworthiness of an aircraft type and must provide necessary information to the States of Registry, which includes Australia. Failure to comply with the obligations set out by these regulations can lead to various consequences. While the specific offences and penalties are not detailed within the provided text, it is known that ADs are legally binding, and non-compliance can result in significant civil or criminal penalties. Although the exact nature and maximum penalties are not outlined, it is clear that adherence to ADs is crucial for maintaining the safety and airworthiness of aircraft. CASA’s role in issuing and enforcing these directives is critical, and any failure to act in accordance with the regulations could have serious ramifications for aviation safety in Australia.

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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.