AD/B-2/27 - Tail Rotor Blades Strike Indicators - Installation - CANCELLED

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Legislation au F2009L01845 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-2/27 affecting Brantly B-2 helicopters.  CASA has assessed this AD and as a result has cancelled AD/B-2/27.  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, Airframe and Structures, 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 establish a regulatory framework that ensures the safety and efficiency of civil aviation in Australia. It provides the legal basis for the Civil Aviation Safety Authority (CASA) to issue regulations, including airworthiness directives (ADs), aimed at maintaining the safety of air navigation. Regulation 39.001 of the Civil Aviation Safety Regulations 1998 empowers CASA to issue these ADs, which are considered legislative instruments under the Acts Interpretation Act 1901 and the Legislative Instruments Act 2003. In accordance with international obligations under Annex 8 to the Convention on International Civil Aviation, Australia’s national airworthiness authority, CASA, must evaluate and, if necessary, issue ADs based on directives from the aircraft's State of Design. In the specific case of AD/B-2/27 concerning Brantly B-2 helicopters, CASA has determined that the unsafe condition no longer exists, leading to the cancellation of this directive effective 4 June 2009. No replacement AD is required, and the cancellation process did not involve public consultation as mandated by Australia's international obligations.

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 within 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 specific types of aircraft or aeronautical products. These directives are legislative instruments and, as such, fall under the purview of the Acts Interpretation Act 1901 and the Legislative Instruments Act 2003. The ADs are issued in compliance with Annex 8 of the Convention on International Civil Aviation, which delineates the responsibilities of the State of Design and the State of Registry concerning the continuing airworthiness of aircraft. CASA, as Australia’s national airworthiness authority, assesses the airworthiness information provided by the State of Design and issues Australian ADs as necessary. This regulatory framework ensures that CASA's actions are in line with international obligations and maintain the highest safety standards within the Australian aviation sector.

Key Provisions

The Civil Aviation Act 1988, as supplemented by the Civil Aviation Safety Regulations 1998, establishes the framework under which airworthiness directives (ADs) can be issued and managed. Section 98 of the Act empowers the Governor-General to make regulations aimed at ensuring the safety of air navigation, while regulation 39.001 of the Civil Aviation Safety Regulations 1998 specifically allows the Civil Aviation Safety Authority (CASA) to issue ADs for certain types of aircraft or aeronautical products. These directives are designed to maintain the airworthiness of aircraft, which is crucial for public safety and compliance with international standards. The obligations placed on parties by these provisions are significant. The State of Design, which is responsible for the overall continuing airworthiness of an aircraft type, must provide necessary information to ensure compliance with safety standards. The State of Registry, which is responsible for the airworthiness of individual aircraft, must develop or adopt requirements to ensure this. In the context of Australia, CASA must assess information from the State of Design and, if necessary, issue an Australian AD to enforce these requirements. This ensures that Australian aircraft meet both domestic and international safety standards. Failure to comply with ADs can lead to serious consequences. Under the Civil Aviation Act 1988 and the Civil Aviation Safety Regulations 1998, non-compliance with ADs can result in civil or criminal penalties. The specific penalties may vary depending on the severity of the breach, but they can include fines, imprisonment, or both. For instance, under section 138 of the Act, a person who contravenes an AD can be fined up to $222,200 for a corporation and up to $44,440 for an individual, along with potential imprisonment for up to five years. These stringent penalties underscore the importance of adhering to ADs to ensure the safety of air navigation. The legislative process for issuing and cancelling ADs is also detailed in the Civil Aviation Act 1988 and the Civil Aviation Safety Regulations 1998. Section 84A(2) of the Act specifies that ADs are made by authorised personnel within CASA, such as the Manager, Airframe and Structures, in the Airworthiness Engineering Group. This centralised approach ensures that ADs are issued based on thorough assessments and in accordance with international standards. The process of cancelling an AD, as seen in the case of AD/B-2/27 for Brantly B-2 helicopters, is similarly governed by these provisions, ensuring that such decisions are made transparently and in compliance with Australia’s international obligations.

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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.