AD/JETSTREAM/106 - Main Landing Gear Radius Rod

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Legislation au F2009L02294 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 European Aviation Safety Authority (EASA) has issued AD 2009-0121-E affecting British Aerospace Jetstream 3100 and 3200 model aircraft.  EASA acts on behalf of The United Kingdom, the State of Design for this type.  CASA has assessed this AD and has issued Australian AD/JETSTREAM/106, which will become effective on 11 June 2009. 

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 Best Practice Regulation has determined that ADs do not require a Regulatory Impact Statement.

The AD has been made by the Manager, Airframes & 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, enacted by the Australian Parliament, aims to ensure the safety and efficiency of civil aviation in Australia. It provides the framework for the regulation of aviation safety, including the issuance of airworthiness directives (ADs) under regulation 39.001 of the Civil Aviation Safety Regulations 1998. These directives are legislative instruments that mandate safety standards and are essential for maintaining the continuing airworthiness of aircraft types registered in Australia. The Civil Aviation (Safety) Regulations 1998 empower the Civil Aviation Safety Authority (CASA) to issue ADs based on assessments and international obligations, such as those under Annex 8 to the Convention on International Civil Aviation. This regulatory approach ensures that Australian aircraft meet international safety standards and allows CASA to act on behalf of the State of Registry, upholding Australia's commitment to global aviation safety protocols.

Scope and Application

The Civil Aviation Act 1988 and the Civil Aviation Safety Regulations 1998 provide a framework for the issuance of airworthiness directives (ADs) to ensure the safety of air navigation in Australia. Under these regulations, the Civil Aviation Safety Authority (CASA) has the authority to issue ADs for particular kinds of aircraft or aeronautical products, as outlined in regulation 39.001. These ADs are legislative instruments and are subject to disallowance under the Acts Interpretation Act 1901. The ADs are intended to address the continuing airworthiness of aircraft and aeronautical products and are mandated by Australia's obligations under the Convention on International Civil Aviation, specifically Annex 8. The State of Registry, in this case CASA, must ensure the continuing airworthiness of aircraft registered in Australia by adopting the requirements outlined in any relevant ADs issued by the State of Design or CASA itself. This process ensures that the safety standards set forth by the Convention are met and that all aircraft operating within Australia adhere to these safety standards.

Key Provisions

The key operative sections of the Civil Aviation Act 1988 and the Civil Aviation Safety Regulations 1998 establish the framework for the issuance of airworthiness directives (ADs) by the Civil Aviation Safety Authority (CASA). Section 98 of the Act allows the Governor-General to make regulations for the safety of air navigation, and regulation 39.001 specifically empowers CASA to issue ADs for types of aircraft or aeronautical products. The ADs are considered legislative instruments under the Acts Interpretation Act 1901 and the Legislative Instruments Act 2003. This legislative framework ensures that CASA can mandate necessary safety measures to maintain the continuing airworthiness of aircraft registered in Australia. The obligations imposed by the Act and the Regulations on parties such as CASA, States of Design, and States of Registry are significant. The State of Design has the primary responsibility for ensuring the continuing airworthiness of aircraft types, as outlined in Annex 8 to the Convention on International Civil Aviation. This responsibility includes providing necessary information to States of Registry. The State of Registry, in turn, must develop or adopt requirements to ensure the airworthiness of individual aircraft. CASA, as Australia’s national airworthiness authority, must assess information from the State of Design and issue corresponding ADs when necessary. This creates a coordinated international approach to ensuring aircraft safety standards are uniformly applied. There are specific consequences for breaches of the Civil Aviation Safety Regulations 1998. While the Act and Regulations do not explicitly detail offences or penalties related to ADs in the provided text, non-compliance with ADs can lead to significant legal ramifications. Failure to adhere to an AD can result in the grounding of an aircraft, which can have severe operational and financial implications for airlines and aircraft owners. Additionally, CASA can impose administrative penalties, which may include fines, as well as more severe civil or criminal actions for serious breaches that result in safety incidents. The exact penalties are not detailed in the provided text, but they are likely to be significant given the importance of airworthiness directives in maintaining aviation safety. The issuance of ADs is an integral part of the international regulatory framework for aviation safety, as evidenced by the collaboration between CASA and the European Aviation Safety Authority (EASA). For example, EASA issued AD 2009-0121-E concerning British Aerospace Jetstream 3100 and 3200 aircraft, which CASA subsequently adopted as Australian AD/JETSTREAM/106. This process underscores the necessity of adhering to international standards and the role of ADs in ensuring that aircraft meet these standards. Given the international nature of aviation, these directives help maintain consistency and safety across different jurisdictions.

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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.