AD/BEA 121/10 - Rudder Drain Hole - CANCELLED

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Legislation au F2009L02183 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/BEA 121/10 affecting Beagle B121 (Pup) series aeroplanes.  CASA has assessed this AD and as a result has cancelled Australian AD/BEA 121/10.  The cancellation will become effective on 2 July 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 is the primary piece of legislation governing civil aviation in Australia. It was enacted to ensure the safety and efficiency of civil aviation within Australia and its territories, and to implement Australia’s obligations under the Convention on International Civil Aviation. This Act empowers the Governor-General to create regulations for the safety of air navigation. One significant aspect of these regulations is the issuance of airworthiness directives (ADs) by the Civil Aviation Safety Authority (CASA), as stipulated in the Civil Aviation Safety Regulations 1998. ADs are legislative instruments designed to maintain the continuing airworthiness of aircraft, a responsibility that falls on both the State of Design and the State of Registry under international conventions. The objective of these directives is to address safety concerns and ensure compliance with airworthiness standards. The 2009 AD/BEA 121/10 concerning Beagle B121 (Pup) series aeroplanes, issued and subsequently cancelled by CASA, exemplifies the application of these regulations in response to specific safety assessments.

Scope and Application

The Civil Aviation Safety Regulations 1998, under section 39.001, empower the Civil Aviation Safety Authority (CASA) to issue airworthiness directives (ADs) for specific types of aircraft or aeronautical products, as stipulated under section 98 of the Civil Aviation Act 1988. These ADs, which serve as legislative instruments in accordance with the Legislative Instruments Act 2003, are integral to ensuring the continuing airworthiness of aircraft types registered in Australia. The authority to issue these directives extends to mandating safety requirements as determined by the State of Design and the State of Registry of an aircraft, aligning with international obligations under Annex 8 to the Convention on International Civil Aviation. This legislative framework applies to all entities involved in the design, manufacture, and operation of aircraft within Australia, ensuring compliance with both national and international safety standards. The jurisdictional reach of these regulations is national, with CASA acting as the central authority responsible for the enforcement and assessment of ADs to maintain air safety standards.

Key Provisions

The Civil Aviation Act 1988 and the Civil Aviation Safety Regulations 1998 provide the legal framework for the issuance of airworthiness directives (ADs). Section 98 of the Civil Aviation Act 1988 empowers the Governor-General to make regulations for the purposes of the Act, particularly focusing on safety in air navigation. Regulation 39.001 of the Civil Aviation Safety Regulations 1998 allows the Civil Aviation Safety Authority (CASA) to issue ADs for specific types of aircraft or aeronautical products. According to subregulation 39.001(5), these ADs are considered disallowable instruments under section 46A of the Acts Interpretation Act 1901 and thus, legislative instruments under section 6 of the Legislative Instruments Act 2003. The issuance of ADs is a critical component of maintaining the continuing airworthiness of aircraft, as mandated by Annex 8 to the Convention on International Civil Aviation. The State of Design, which is the country where the aircraft type was designed, holds overall responsibility for ensuring the continuing airworthiness of the aircraft type. This responsibility includes providing necessary information to the States of Registry, which are the countries where individual aircraft are registered. CASA, as Australia’s national airworthiness authority, is tasked with assessing the ADs issued by States of Design and, if necessary, issuing corresponding Australian ADs to ensure compliance with the safety requirements. This ensures that all aircraft registered in Australia meet the safety standards set forth by international and national regulations. The obligations placed on the parties governed by these regulations are significant. The State of Design must issue ADs when necessary to address safety concerns for the aircraft type. The State of Registry, in this case, Australia, must develop or adopt requirements to ensure the continuing airworthiness of aircraft registered within its jurisdiction. CASA is responsible for assessing foreign ADs and issuing Australian ADs as required, ensuring that all aircraft meet the necessary safety standards. This involves rigorous assessment and, if necessary, cancellation of existing ADs when the conditions that necessitated them no longer exist. Failure to comply with the requirements set out in the ADs can lead to serious consequences. The regulations do not explicitly outline the specific offences, penalties, or civil/criminal consequences for breaches. However, non-compliance with ADs can potentially lead to severe safety issues, including accidents and incidents that may result in significant legal and financial repercussions for the involved parties. The primary focus of the legislation is on ensuring that all aircraft maintain the highest standards of airworthiness, thus protecting the safety of air navigation. The legislative framework ensures that any breaches of these safety standards are rigorously monitored and addressed by the appropriate authorities.

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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.