AD/FU24/37 - Elevator Horn Assembly - Inspection - CANCELLED

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Legislation au F2009L01481 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/FU24/37 affecting Fletcher FU24 model aircraft.  CASA has assessed this AD and as a result has cancelled Australian AD/FU24/37.  The cancellation will become effective on 7 May 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, enacted by the Commonwealth Parliament, was introduced to provide a comprehensive legal framework for the regulation of civil aviation in Australia, ensuring the safety, efficiency and orderly development of civil aviation. Section 98 of the Act empowers the Governor-General to make regulations that contribute to the safety of air navigation. In line with this, the Civil Aviation Safety Regulations 1998 allow the Civil Aviation Safety Authority (CASA) to issue airworthiness directives (ADs) for types of aircraft or aeronautical products. These directives are legislative instruments under the Legislative Instruments Act 2003 and are crucial for maintaining the continuing airworthiness of aircraft, as mandated by Annex 8 to the Convention on International Civil Aviation. This legislative framework ensures that the State of Design and the State of Registry both have responsibilities in ensuring the safety and airworthiness of aircraft. In accordance with these provisions, CASA has the authority to issue or cancel ADs based on assessments of safety risks, as exemplified by the cancellation of Australian AD/FU24/37 for the Fletcher FU24 model aircraft.

Scope and Application

The Civil Aviation Act 1988, as supplemented by the Civil Aviation Safety Regulations 1998, provides the framework under which the Civil Aviation Safety Authority (CASA) can issue airworthiness directives (ADs). Under this legislative umbrella, CASA can mandate safety standards for specific types of aircraft or aeronautical products to ensure the safety of air navigation. These ADs apply to the holders of aircraft certificates and operators within Australia, and are issued to maintain the continuing airworthiness of aircraft registered in Australia, in accordance with international obligations under the Convention on International Civil Aviation. The authority to issue these directives stems from the overarching responsibility of the State of Design to ensure that aircraft remain airworthy and the subsequent duty of the State of Registry to enforce these standards. ADs are a common and globally accepted means of communicating continuing airworthiness requirements, and CASA's role is to assess and, if necessary, implement these directives on the Australian Register. The process of issuing, amending, or cancelling ADs, including the AD/FU24/37 for Fletcher FU24 model aircraft, is conducted by CASA without the need for public consultation, given their status as legislative instruments and their alignment with international obligations.

Key Provisions

The Civil Aviation Act 1988 and the Civil Aviation Safety Regulations 1998 lay the groundwork for the issuance of airworthiness directives (ADs) in Australia. Under section 98 of the Civil Aviation Act 1988, the Governor-General is empowered to make regulations that serve the Act's purpose, specifically for the safety of air navigation. Regulation 39.001 of the Civil Aviation Safety Regulations 1998 further delineates that the Civil Aviation Safety Authority (CASA) may issue ADs for specific types of aircraft or aeronautical products. Importantly, subregulation 39.001(5) classifies ADs as disallowable instruments, as stipulated in section 46A of the Acts Interpretation Act 1901, thereby making them legislative instruments under section 6 of the Legislative Instruments Act 2003. Entities governed by these provisions, notably CASA, have distinct obligations to uphold the safety standards set forth in the Act and Regulations. CASA, as the national airworthiness authority, must ensure that any AD issued by the State of Design, which has overall responsibility for the continuing airworthiness of an aircraft type, is assessed for its applicability to aircraft on the Australian Register. If necessary, CASA is mandated to issue corresponding Australian ADs to enforce the safety requirements established by the State of Design. Furthermore, the State of Registry, which is responsible for the continuing airworthiness of individual aircraft, must develop or adopt the necessary requirements to maintain airworthiness in line with Annex 8 to the Convention on International Civil Aviation. Failure to comply with the provisions of the Act and Regulations can result in significant consequences. While specific offences and penalties are not detailed in this particular text, it is well-established within the broader framework of aviation law that breaches of airworthiness directives can lead to serious civil and criminal penalties. These may include fines, imprisonment, or both, depending on the severity of the breach and its impact on aviation safety. The specific penalties would be defined in the relevant sections of the Civil Aviation Act 1988 and other applicable laws. In summary, the key provisions of the Civil Aviation Act 1988 and the Civil Aviation Safety Regulations 1998 require CASA to issue airworthiness directives for specific types of aircraft, based on assessments of international directives. These directives are crucial for maintaining the safety standards of aircraft on the Australian Register, with obligations resting on both CASA and the State of Registry to implement and enforce these safety measures. Breaches of these provisions can lead to significant legal and financial consequences, underscoring the importance of strict adherence to the regulations.

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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.