AD/PR/36 - Blade Counterweight Capscrew Holes

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Legislation au F2006L03532 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 EASA has issued AD 2006-0326-E affecting Dowty Propellers.  The EASA is the State of Design for these propellers.  CASA has assessed this AD and has issued Australian AD/PR/36, which will become effective on 27 October 2006.

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 Regulatory Review has determined that ADs do not require a Regulatory Impact Statement.

The AD has been made by the Manager, New Technologies and Systems, in the Manufacturing, Certification and New Technologies Office, on behalf of CASA, in accordance with subsection 84A (2) of the Act.

Overview

The Civil Aviation Act 1988 was enacted to provide a legislative framework for civil aviation in Australia, ensuring safety and efficiency in air navigation. The Act empowers the Governor-General to make regulations that are in the interest of air navigation safety. Under this authority, the Civil Aviation Safety Regulations 1998 were established, which among other things, allow the Civil Aviation Safety Authority (CASA) to issue airworthiness directives (ADs) for aircraft or aeronautical products. These ADs are designed to ensure the continuing airworthiness of aircraft and are integral to meeting Australia’s obligations under international conventions, such as the Convention on International Civil Aviation. CASA, acting as Australia’s national airworthiness authority, assesses ADs issued by the State of Design and may issue corresponding Australian ADs to mandate necessary safety requirements. The ADs are legislative instruments, subject to disallowance and review processes as outlined in the Acts Interpretation Act 1901 and the Legislative Instruments Act 2003. The issuance of ADs such as AD/PR/36, in response to an AD by the European Aviation Safety Agency (EASA) for Dowty Propellers, underscores the collaborative international approach to maintaining aviation safety standards.

Scope and Application

The Civil Aviation Safety Regulations 1998, under the authority of the Civil Aviation Act 1988, empower the Civil Aviation Safety Authority (CASA) to issue airworthiness directives (ADs) for specified types of aircraft or aeronautical products. This regulatory framework is designed to uphold the safety of air navigation, aligning with Australia's obligations under the Convention on International Civil Aviation. The ADs serve as legislative instruments, subject to disallowance under the Acts Interpretation Act 1901, and are created in accordance with the Legislative Instruments Act 2003. In the context of an AD issued by the European Aviation Safety Agency (EASA) affecting Dowty Propellers, CASA, as Australia’s national airworthiness authority, evaluates the information and, if necessary, issues a corresponding Australian AD to enforce the State of Design's requirements. This process ensures that the continuing airworthiness of aircraft registered in Australia is maintained in line with international standards, without necessitating public consultation or a Regulatory Impact Statement.

Key Provisions

The Civil Aviation Act 1988 (section 98) empowers the Governor-General to establish regulations in the interest of air navigation safety, while regulation 39.001 of the Civil Aviation Safety Regulations 1998 (CASR) allows the Civil Aviation Safety Authority (CASA) to issue airworthiness directives (ADs) for specific aircraft types or aeronautical products. These ADs, as specified in subregulation 39.001(5) of the CASR, 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. ADs serve as a critical mechanism for ensuring the continuing airworthiness of aircraft, aligning with Annex 8 of the Convention on International Civil Aviation, which mandates that the State of Design has overarching responsibility for an aircraft type's airworthiness and must provide necessary information to States of Registry. The State of Registry, in this case CASA as Australia’s national airworthiness authority, is obligated to evaluate the information provided by the State of Design and, if necessary, issue a corresponding Australian AD to enforce the State of Design’s requirements. This process is exemplified by the European Aviation Safety Agency's (EASA) issuance of AD 2006-0326-E concerning Dowty Propellers, for which EASA is the State of Design. CASA assessed this AD and issued Australian AD/PR/36, effective from 27 October 2006. Given that this AD stems from Australia's commitments under the Convention on International Civil Aviation and in response to an AD from the relevant State of Design, there has been no public consultation in Australia regarding this directive. Additionally, the Office of Regulatory Review has determined that such ADs do not necessitate a Regulatory Impact Statement. Under the Civil Aviation Safety Regulations 1998, entities governed by these regulations are required to comply with the issued ADs to ensure the safety and airworthiness of aircraft. Non-compliance with these directives can lead to serious safety risks and legal consequences. The Civil Aviation Act 1988 and associated regulations impose obligations on aircraft operators and maintenance providers to adhere to ADs, ensuring that any identified safety issues are addressed promptly. Failure to comply with an AD can result in enforcement actions by CASA, including the suspension or revocation of an aircraft’s certificate of airworthiness. Such actions can lead to significant operational disruptions and financial penalties for the non-compliant party. The severity of penalties can vary, but may include substantial fines and imprisonment, depending on the nature and impact of the non-compliance.

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Civil Aviation Law
Instrument
Regulation
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Definitions & Interpretation
Reporting & Disclosure Obligations
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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.