AD/PHZL/88 - CSE Aviation

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Legislation au F2007L01363 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 United States FAA has issued AD 2006-24-07 affecting Hartzell propellers.  The United States is the State of Design for these helicopters.  CASA has assessed this AD and has issued Australian AD/PHZL/88 which will become effective on 7 June 2007.

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 for the safety of civil aviation in Australia and to implement Australia’s obligations under the Convention on International Civil Aviation. The Act empowers the Governor-General to make regulations that contribute to the safety of air navigation. Under the authority of this Act, the Civil Aviation Safety Regulations 1998 were established to govern various aspects of aviation safety, including the issuance of airworthiness directives (ADs) by the Civil Aviation Safety Authority (CASA). ADs are legislative instruments that mandate safety requirements for specific types of aircraft or aeronautical products. The policy objective of these regulations is to ensure the continuing airworthiness of aircraft in accordance with international standards and to maintain high safety standards within Australia’s aviation sector.

Scope and Application

The Civil Aviation Act 1988, as augmented by the Civil Aviation Safety Regulations 1998, provides the legislative framework for the regulation of civil aviation safety in Australia. Under section 98 of the Act, the Governor-General can enact regulations deemed necessary for the safety of air navigation, and regulation 39.001 allows the Civil Aviation Safety Authority (CASA) to issue airworthiness directives (ADs) concerning types of aircraft or aeronautical products. These ADs are legislative instruments, subject to disallowance and scrutiny under the Legislative Instruments Act 2003. The ADs are primarily issued in response to international obligations under the Convention on International Civil Aviation, specifically Annex 8, which assigns the State of Design the responsibility for the continuing airworthiness of aircraft types. The State of Registry, in this case, CASA for Australia, must then ensure that these directives are appropriately adopted and enforced within its jurisdiction to maintain safety standards. Exemptions or thresholds for these regulations are not explicitly mentioned in the provided text, but it is implied that such measures are tailored to specific aircraft types or aeronautical products as determined by CASA. The issuance of an AD, such as the Australian AD/PHZL/88 in response to the U.S. FAA’s AD 2006-24-07, is a direct application of these regulatory powers without the need for public consultation or a Regulatory Impact Statement.

Key Provisions

The Civil Aviation Act 1988, as amended, empowers the Governor-General to establish regulations that ensure the safety of air navigation, as noted in section 98. One such regulation, 39.001 of the Civil Aviation Safety Regulations 1998, allows the Civil Aviation Safety Authority (CASA) to issue airworthiness directives (ADs) concerning specific types of aircraft or aeronautical products. Under subregulation 39.001(5), these ADs are classified as disallowable instruments under section 46A of the Acts Interpretation Act 1901, thereby rendering them legislative instruments according to section 6 of the Legislative Instruments Act 2003. This regulatory framework aligns with the provisions of Annex 8 to the Convention on International Civil Aviation, which designates the State of Design as the entity responsible for the ongoing airworthiness of an aircraft type and mandates the sharing of necessary information with States of Registry to maintain airworthiness. The obligations imposed by the Civil Aviation Act 1988 and the Civil Aviation Safety Regulations 1998 require the State of Design to ensure the ongoing airworthiness of aircraft types and to provide relevant information to States of Registry. For Australia, CASA, as the national airworthiness authority, must evaluate any ADs issued by the State of Design and, if necessary, issue corresponding Australian ADs to enforce the design state’s requirements. This process ensures that Australian-registered aircraft comply with international safety standards. Failure to comply with the mandates outlined in airworthiness directives can lead to significant legal consequences. The Civil Aviation Act 1988 outlines specific offences and penalties for breaches of airworthiness regulations. While the Civil Aviation Safety Regulations 1998 do not explicitly state the penalties for non-compliance with ADs, general provisions within the Act could result in fines or imprisonment. The severity of the penalty often depends on the nature of the breach and its impact on aviation safety. CASA’s enforcement of ADs is critical in maintaining high safety standards, and non-compliance can result in severe civil or criminal repercussions, including potential aircraft grounding or prosecution of individuals or companies responsible for the oversight.

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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.