AD/PHZL/82 - Hub Certified Service Life

Administered by Department of Infrastructure, Transport, Regional Development, Communications, Sport and the Arts

Legislation au F2005L03924 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 United States FAA has issued AD 2003-04-01 affecting Hartzell propeller hubs.  The United States is the State of Design for this equipment.  CASA has assessed this AD and has issued Australian AD/PHZL/82, which will become effective on 19 January 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 comprehensive legal framework for the regulation of civil aviation in Australia, ensuring safety and efficiency in the industry. This Act authorises the Governor-General to create regulations in the interest of air navigation safety, delegating specific powers to the Civil Aviation Safety Authority (CASA). One significant aspect of the Act is the ability to issue airworthiness directives (ADs) under regulation 39.001 of the Civil Aviation Safety Regulations 1998, which are legislative instruments subject to disallowance under the Acts Interpretation Act 1901. These directives are critical for maintaining the continuing airworthiness of aircraft, aligning with international obligations under the Convention on International Civil Aviation. The responsibility for issuing ADs falls to CASA, which acts on assessments of directives issued by the aircraft's State of Design, ensuring compliance with international standards and fostering a safe aviation environment.

Scope and Application

The Civil Aviation Act 1988, as supplemented by the Civil Aviation Safety Regulations 1998, grants the Civil Aviation Safety Authority (CASA) the authority to issue airworthiness directives (ADs) which are legislative instruments for ensuring the safety of aircraft and aeronautical products. These ADs apply to aircraft registered in Australia, imposing safety requirements and mandating compliance with standards set by the State of Design, which in many cases is the United States. The ADs are issued under the oversight of Australia's obligations under the Convention on International Civil Aviation, specifically Annex 8, which mandates that the State of Registry, in this case CASA, ensures the continuing airworthiness of aircraft. Exemptions or exclusions from these regulations are not specified in the provided text, and the legislative process does not require public consultation or a Regulatory Impact Statement for these specific ADs. The ADs extend their jurisdictional reach nationally, enforcing international safety standards within Australia.

Key Provisions

The Civil Aviation Act 1988 (section 98) empowers the Governor-General to create regulations aimed at ensuring the safety of air navigation. In particular, regulation 39.001 of the Civil Aviation Safety Regulations 1998 grants the Civil Aviation Safety Authority (CASA) the authority to issue airworthiness directives (ADs) for specific types of aircraft or aeronautical products. These ADs are issued to ensure that aircraft maintain a standard of airworthiness, and are considered disallowable instruments under section 46A of the Acts Interpretation Act 1901. This classification means that they are legislative instruments as per section 6 of the Legislative Instruments Act 2003. Under Annex 8 of the Convention on International Civil Aviation, the State of Design is primarily responsible for the continuing airworthiness of an aircraft type, and must provide necessary information to the States of Registry to ensure this. The State of Registry, in turn, must develop or adopt requirements to ensure the continuing airworthiness of aircraft registered within its territory. When the State of Design issues an AD, such as the one issued by the United States Federal Aviation Administration (FAA) concerning Hartzell propeller hubs, CASA must evaluate the information and, if necessary, issue a corresponding Australian AD. In this case, CASA issued Australian AD/PHZL/82 in response to FAA AD 2003-04-01, effective from 19 January 2006. The process of issuing an AD, particularly one in response to an international AD, does not involve public consultation or the need for a Regulatory Impact Statement, as determined by the Office of Regulatory Review. This AD was made by the Manager, New Technologies and Systems, within CASA’s Manufacturing, Certification and New Technologies Office, in accordance with subsection 84A(2) of the Act. This systematic approach ensures that the requirements of international agreements are met without unnecessary procedural delays. Violating the terms of an AD can lead to severe consequences, including both civil and criminal penalties. While specific penalties are not detailed in the text provided, general regulations under the Civil Aviation Act 1988 and Civil Aviation Safety Regulations 1998 typically include fines and potential imprisonment for serious breaches. These penalties underscore the importance of compliance with ADs to maintain the high safety standards required in aviation.

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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.