AD/BEA 121/8 Amdt 4 - Rudder Control Torque Tubes

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Legislation au F2005L03581 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 UK CAA has issued AD G-2005-0030 affecting Beagle B121 model aircraft.  The UK is the State of Design for this type.  CASA has assessed this AD and has issued Australian AD/BEA 121/8 Amendment 4, which will become effective on 22 December 2005.  This AD cancels and replaces the previous issue.

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 by the Parliament of Australia, governs the regulation of civil aviation in Australia, with a primary focus on ensuring the safety of air navigation. As part of its regulatory framework, the Act empowers the Governor-General to make regulations under section 98, which includes the issuance of airworthiness directives (ADs) by the Civil Aviation Safety Authority (CASA) under regulation 39.001 of the Civil Aviation Safety Regulations 1998. This legislative approach addresses the need for standardised safety measures across the aviation industry, particularly in relation to the continuing airworthiness of aircraft types registered in Australia. These ADs are mandated by Australia's obligations under the Convention on International Civil Aviation, specifically Annex 8, which assigns the State of Design the responsibility for providing necessary information to ensure the continuing airworthiness of an aircraft type. In line with this international framework, CASA assesses and issues Australian ADs as required, ensuring compliance with both international standards and domestic safety regulations.

Scope and Application

The Civil Aviation Act 1988, supplemented by the Civil Aviation Safety Regulations 1998, establishes a 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 certain types of aircraft or aeronautical products. These directives are legislative instruments, subject to disallowance under section 46A of the Acts Interpretation Act 1901 and legislative oversight under the Legislative Instruments Act 2003. The issuance of ADs is integral to maintaining the continuing airworthiness of aircraft, a responsibility mandated by Annex 8 to the Convention on International Civil Aviation. The State of Design, in this case the United Kingdom, holds primary responsibility for ensuring the airworthiness of the Beagle B121 model aircraft, while CASA, as Australia’s national airworthiness authority, must assess and implement these directives to ensure compliance with Australian standards. This legislative framework applies to all aircraft registered in Australia, including those designed and manufactured abroad, and it extends to mandating compliance with international safety standards. The ADs do not require public consultation or a Regulatory Impact Statement, given their technical nature and alignment with international obligations.

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 types of aircraft or aeronautical products. These ADs are intended to ensure the continuing airworthiness of aircraft and are a legislative instrument under the Legislative Instruments Act 2003. The State of Design, which holds responsibility for the continuing airworthiness of an aircraft type, issues these directives, and the State of Registry must implement them. In the case of the Beagle B121 model aircraft, the United Kingdom, as the State of Design, issued AD G-2005-0030, which CASA assessed and then translated into Australian AD/BEA 121/8 Amendment 4. The obligations imposed by these regulations require CASA to act swiftly and effectively in response to any AD issued by the State of Design. CASA must review the AD, determine its relevance and applicability to aircraft registered in Australia, and, if necessary, issue a corresponding Australian AD to mandate the requirements. The State of Registry is then obligated to ensure that all relevant aircraft comply with the AD, which may involve inspections, maintenance, or modifications. This ensures that aircraft remain airworthy and safe for operation, aligning with international standards set out in Annex 8 to the Convention on International Civil Aviation. Breaching the requirements of an AD can have significant legal consequences. Non-compliance with an AD may be considered an offence under the Civil Aviation Act 1988, leading to potential civil or criminal penalties. For instance, failure to adhere to an AD can result in fines, imprisonment, or both, depending on the severity of the breach. The maximum penalties for such offences can be substantial, reflecting the importance of maintaining airworthiness and safety standards. CASA has the authority to enforce these regulations and may take action against operators or individuals who fail to comply with ADs, ensuring that all aircraft meet the necessary safety standards. The legislative framework surrounding ADs ensures that the process is rigorous and accountable. The ADs are issued following a thorough assessment by CASA, and the lack of public consultation is justified by Australia's international obligations and the nature of the directives. The Office of Regulatory Review has also determined that such ADs do not require a Regulatory Impact Statement, streamlining the process while maintaining high safety standards. The Manager, Airframes in the Manufacturing, Certification and New Technologies Office, on behalf of CASA, issues these ADs in accordance with subsection 84A(2) of the Act, ensuring that the directives are legally sound and properly authorised.

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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.