AD/DHC-2/3 - Rudder Pedal Assembly - Modification - CANCELLED

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Legislation au F2008L03636 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. 

The Civil Aviation Safety Authority or its predecessors issued AD/DHC-2/3 affecting De Havilland DHC-2 (Beaver) model aeroplanes.  CASA has assessed this AD and as a result has cancelled Australian AD/DHC-2/3.  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, 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 Australian Parliament, was introduced to ensure the safety of air navigation and establish a robust regulatory framework for civil aviation in Australia. Under this Act, the Governor-General has the authority to make regulations that serve the interests of aviation safety. One such regulation is found in the Civil Aviation Safety Regulations 1998, which allow the Civil Aviation Safety Authority (CASA) to issue airworthiness directives (ADs) for various kinds of aircraft or aeronautical products. These ADs are legislative instruments that are subject to disallowance, as outlined in the Acts Interpretation Act 1901. The ADs serve the purpose of maintaining the continuing airworthiness of aircraft in accordance with international standards set by the Convention on International Civil Aviation. Recently, CASA cancelled Australian AD/DHC-2/3 for De Havilland DHC-2 (Beaver) model aeroplanes, reflecting Australia’s commitment to international obligations and the cessation of the unsafe condition that the AD was addressing. This cancellation, made under the authority vested in CASA, will take effect on 23 October 2008, with no replacement AD being necessary.

Scope and Application

The Civil Aviation Act 1988, in conjunction with the Civil Aviation Safety Regulations 1998, governs the safety of air navigation and the issuance of airworthiness directives (ADs) by the Civil Aviation Safety Authority (CASA). This legislation applies to individuals, entities, and industries involved in the operation and maintenance of aircraft, as well as to the manufacture of aeronautical products, ensuring their airworthiness. Geographically, the Act and its regulations extend to the Commonwealth of Australia, with adherence to international standards as stipulated by the Convention on International Civil Aviation. The scope of the ADs is broad, encompassing all types of aircraft and aeronautical products to maintain safety standards, with CASA issuing such directives for specific aircraft types as required. The ADs are legislative instruments and are disallowable under the Acts Interpretation Act 1901. While the ADs are critical for ensuring the continuing airworthiness of aircraft, they are subject to cancellation when the unsafe conditions they were designed to address no longer exist, as demonstrated by the cancellation of AD/DHC-2/3 for De Havilland DHC-2 (Beaver) model aeroplanes. The ADs are made under the authority of the Act and are subject to review and cancellation by CASA in accordance with Australia’s obligations under international conventions.

Key Provisions

The main operative sections of the Civil Aviation Act 1988 and the Civil Aviation Safety Regulations 1998 focus on ensuring the safety of air navigation and the continuing airworthiness of aircraft. Under section 98 of the Act, the Governor-General is empowered to make regulations to enhance the safety of air navigation, and regulation 39.001 allows the Civil Aviation Safety Authority (CASA) to issue airworthiness directives (ADs) for specified types of aircraft or aeronautical products (Civil Aviation Act 1988, s 98; Civil Aviation Safety Regulations 1998, reg 39.001). These ADs are legislative instruments and are subject to disallowance under section 46A of the Acts Interpretation Act 1901 and section 6 of the Legislative Instruments Act 2003. The obligations imposed by the Act and the Regulations include the State of Design's responsibility, as outlined in Annex 8 to the Convention on International Civil Aviation, to provide necessary information to ensure the continuing airworthiness of an aircraft type. The State of Registry, which in this context is Australia, must develop or adopt requirements to ensure the continuing airworthiness of aircraft registered within its territory (Civil Aviation Safety Regulations 1998, reg 39.001(5)). This obligation was fulfilled by CASA issuing and subsequently cancelling AD/DHC-2/3 affecting De Havilland DHC-2 (Beaver) model aeroplanes, as the unsafe condition identified in the AD no longer exists. In terms of breaches and consequences, the Act and Regulations do not specify particular offences related to the issuance or compliance with ADs. However, failure to comply with an AD can lead to severe consequences, such as grounding of the aircraft or prosecution under other relevant civil aviation laws. The maximum penalties for breaches of civil aviation laws can include fines and imprisonment, although specific penalties depend on the nature and severity of the breach. Given that ADs are designed to ensure safety, non-compliance can potentially result in serious safety incidents, which could incur further criminal or civil liabilities. In conclusion, the Civil Aviation Act 1988 and the Civil Aviation Safety Regulations 1998 establish a robust framework for maintaining the safety and airworthiness of aircraft through the issuance of ADs. The State of Design and the State of Registry bear significant responsibilities under international and domestic regulations, and CASA plays a pivotal role in ensuring these responsibilities are met. Non-compliance with ADs can lead to significant consequences, including the grounding of aircraft and potential criminal or civil penalties.

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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.