AD/BELL 206/40 - Tail Rotor Control Tube Tunnel - Modification - CANCELLED

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Legislation au F2008L03656 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/BELL 206/40 affecting Bell 206 model aircraft.  CASA has assessed this AD and as a result has cancelled it.  The cancellation will become effective on 23 October 2008.  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 Technology 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 comprehensive legal framework for civil aviation in Australia, focusing on the safety of air navigation. Under this Act, the Governor-General has the authority to make regulations that ensure the safety of air navigation, as exemplified by the Civil Aviation Safety Regulations 1998. The latter regulations empower the Civil Aviation Safety Authority (CASA) to issue airworthiness directives (ADs) for specific kinds of aircraft or aeronautical products. These ADs, considered legislative instruments, are crucial for maintaining the continuing airworthiness of aircraft types, in alignment with the responsibilities of the State of Design and State of Registry as outlined in Annex 8 to the Convention on International Civil Aviation. The ADs issued by CASA reflect Australia's commitment to international safety standards, ensuring that any unsafe conditions identified are addressed appropriately. In this context, CASA has cancelled an AD pertaining to Bell 206 model aircraft, effective from 23 October 2008, due to the resolution of the previously identified unsafe condition, thereby fulfilling Australia's international obligations.

Scope and Application

The Civil Aviation Act 1988, supported by the Civil Aviation Safety Regulations 1998, provides the framework for the issuance of airworthiness directives (ADs) by the Civil Aviation Safety Authority (CASA) to ensure the safety of air navigation. These regulations allow CASA to issue ADs for specific types of aircraft or aeronautical products, establishing standards that must be met for these aircraft to remain airworthy. Such directives are considered legislative instruments, subject to disallowance under the Acts Interpretation Act 1901 and regulation under the Legislative Instruments Act 2003. These ADs are integral to the continuing airworthiness of aircraft, with the State of Design bearing the primary responsibility for providing necessary information to States of Registry, as outlined in Annex 8 to the Convention on International Civil Aviation. CASA, as Australia's national airworthiness authority, must evaluate these directives and, if necessary, issue corresponding Australian ADs to enforce the requirements set forth by the State of Design. In this instance, AD/BELL 206/40 concerning Bell 206 model aircraft has been cancelled by CASA due to the resolution of the unsafe condition, with no replacement directive necessary as of 23 October 2008.

Key Provisions

The Civil Aviation Act 1988, through section 98, empowers the Governor-General to establish regulations aimed at ensuring the safety of air navigation. Regulation 39.001 of the Civil Aviation Safety Regulations 1998 further allows the Civil Aviation Safety Authority (CASA) to issue airworthiness directives (ADs) for specific types of aircraft or aeronautical products. These directives are formal instruments that, as per subregulation 39.001(5), are considered disallowable instruments under section 46A of the Acts Interpretation Act 1901 and thus, legislative instruments according to section 6 of the Legislative Instruments Act 2003. ADs serve as a primary means of conveying continuing airworthiness information as outlined in Annex 8 of the Convention on International Civil Aviation. They are issued by most ICAO Contracting States and are essential for maintaining the safety and airworthiness of aircraft types. The obligations imposed by these regulations require CASA to assess information from the State of Design when an AD is issued for a type of aircraft registered in Australia. If deemed necessary, CASA must then issue an Australian AD to ensure the continuing airworthiness of the aircraft in accordance with Australian standards. The State of Design bears the responsibility for the continuing airworthiness of an aircraft type and must provide all necessary information to the States of Registry, which includes Australia. The State of Registry, in this case CASA, must ensure that the aircraft remain airworthy by adopting or developing the appropriate requirements. This includes the implementation of any ADs issued by the State of Design or CASA itself. In terms of legal consequences, breaches of the Civil Aviation Act 1988 and the Civil Aviation Safety Regulations 1998 can result in significant penalties. Although specific penalties are not detailed in the provided text, general provisions under the Act suggest that penalties for non-compliance can be severe, including fines and imprisonment. The Civil Aviation Safety Regulations 1998 also outline the maximum penalties for various offences, which can include substantial financial penalties and potential imprisonment terms. The failure to comply with an AD can result in serious safety hazards, and CASA has the authority to take enforcement actions against non-compliant aircraft and operators.

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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.