AD/PR/8 - Hub Driving Centre - Modification - CANCELLED

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Legislation au F2009L03931 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, the Civil Aviation Safety Authority (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 engine 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, including the continuing airworthiness of propellers installed in aircraft.

CASA or its predecessors issued AD/PR/8 affecting Dowty-Rotol propellers.  CASA has reviewed this AD and as a result has cancelled it.  The cancellation will become effective on 19 November 2009.  No replacement AD is required.

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, New Technology and Regulatory Trends, in the Standards Development and Future Technology Division, 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 provide a comprehensive framework for civil aviation, ensuring the safety and efficiency of air navigation. The Act allows the Governor-General to create regulations, such as the Civil Aviation Safety Regulations 1998, which empower the Civil Aviation Safety Authority (CASA) to issue airworthiness directives (ADs) for various aircraft and aeronautical products. These ADs, which are legislative instruments, play a crucial role in maintaining the continuing airworthiness of aircraft as per the Convention on International Civil Aviation and its Annex 8. The Civil Aviation Act 1988 thus addresses the need for a robust regulatory framework to oversee the safety and airworthiness of aircraft within Australia, aligning with international standards and obligations. The cancellation of AD/PR/8 concerning Dowty-Rotol propellers by CASA, as a result of Australia's obligations under the Convention on International Civil Aviation, signifies the continuous adaptation and refinement of regulatory measures to meet international safety standards. This cancellation, which took effect on 19 November 2009, does not require a replacement AD, reflecting the dynamic nature of aviation safety regulations. The decision to cancel the AD was made by CASA, adhering to the legislative framework established by the Civil Aviation Act 1988 and the Civil Aviation Safety Regulations 1998, ensuring that Australia's aviation safety practices remain aligned with global standards.

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) pertaining to specific kinds of aircraft or aeronautical products. These ADs are legislative instruments as defined under section 46A of the Acts Interpretation Act 1901 and are subject to disallowance. The ADs serve as a crucial mechanism for maintaining the continuing airworthiness of aircraft as mandated by Annex 8 to the Convention on International Civil Aviation. This international obligation places the responsibility of continuing airworthiness on the State of Registry, which in Australia, is CASA. The ADs are aligned with the international standards and are issued to ensure compliance with the safety regulations set forth by the International Civil Aviation Organization (ICAO). The specific AD/PR/8 affecting Dowty-Rotol propellers, issued by CASA, has been reviewed and subsequently cancelled, effective from 19 November 2009, due to Australia’s obligations under the Convention on International Civil Aviation, thus obviating the need for public consultation or a Regulatory Impact Statement. The cancellation was executed by the Manager, New Technology and Regulatory Trends, within CASA’s Standards Development and Future Technology Division, in accordance with the Civil Aviation Act 1988.

Key Provisions

The key operative sections of the Civil Aviation Act 1988 and the Civil Aviation Safety Regulations 1998, particularly section 98 of the former and regulation 39.001 of the latter, allow the Governor-General and the Civil Aviation Safety Authority (CASA) to issue airworthiness directives (ADs) to ensure the safety of air navigation. Section 39.001(5) of the Civil Aviation Safety Regulations 1998 further clarifies that an AD is a disallowable instrument under section 46A of the Acts Interpretation Act 1901, and therefore, a legislative instrument. The ADs serve as a form of continuing airworthiness information, necessary under Annex 8 to the Convention on International Civil Aviation. The State of Design is responsible for the continuing airworthiness of an engine type, while the State of Registry of an individual aircraft is responsible for ensuring the continuing airworthiness of the aircraft and its components, such as propellers. The obligations and requirements imposed by the Civil Aviation Act 1988 and the Civil Aviation Safety Regulations 1998 on the parties or entities they govern primarily centre around maintaining airworthiness. For instance, the State of Design must provide all necessary information to ensure the continuing airworthiness of a type to appropriate States of Registry, and the State of Registry must develop or adopt requirements to ensure the continuing airworthiness of aircraft. CASA, acting as the State of Registry in Australia, must issue ADs to comply with these obligations, ensuring that all aircraft and aeronautical products meet safety standards. CASA has the authority to review and cancel ADs, as demonstrated by the cancellation of AD/PR/8 affecting Dowty-Rotol propellers, which will become effective on 19 November 2009. Any breach of the obligations and requirements set out in the Civil Aviation Act 1988 and the Civil Aviation Safety Regulations 1998 can lead to various consequences. Under the Civil Aviation Act 1988, CASA may impose administrative penalties for non-compliance with ADs. The maximum penalty for a civil offence can vary, but it typically includes fines up to a certain amount as specified by the Act. For more serious breaches, criminal penalties may apply, including imprisonment, reflecting the critical nature of ensuring air safety. CASA's role in enforcing these regulations is crucial in maintaining the high safety standards expected in the aviation industry. The legislative framework provides a robust system to manage and mitigate risks related to airworthiness, ensuring the safety of passengers, crew, and the general public.

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Civil Aviation Law
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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.