AD/PMC/52 - Propeller Blade Erosion

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

Legislation au F2008L02891 Not in force Legislative Instrument

Legislation content

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 2008-08-01 affecting McCauley Propeller Systems propellers fitted to BAE Systems Limited Jetstream Model 4100 and 4101 series aeroplanes.  The United States is the State of Design for these propellers.  CASA has assessed this AD and has issued Australian AD/PMC/52, which will become effective on 28 August 2008.

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 Airworthiness Engineering Branch, on behalf of CASA, in accordance with subsection 84A (2) of the Act.

Overview

The Civil Aviation Act 1988, enacted by the Commonwealth of Australia Parliament, provides the legal framework for the regulation of civil aviation within Australia. This Act, along with the Civil Aviation Safety Regulations 1998, facilitates the issuance of airworthiness directives (ADs) to ensure the ongoing safety and airworthiness of aircraft and aeronautical products in Australia. The Act empowers the Civil Aviation Safety Authority (CASA) to issue these directives in response to safety concerns identified by the State of Design or other international regulatory bodies. The overarching policy objective is to maintain the highest standards of air safety, in alignment with Australia's obligations under the Convention on International Civil Aviation. The Civil Aviation Safety Regulations 1998 further detail the process by which CASA issues ADs, which are legislative instruments subject to disallowance and review under the Acts Interpretation Act 1901 and the Legislative Instruments Act 2003. Given the international nature of aviation, ADs are typically issued in response to directives from the relevant State of Design, as seen in the case of the McCauley Propeller Systems propellers, without necessitating public consultation due to their alignment with international obligations.

Scope and Application

The Civil Aviation Safety Regulations 1998, under section 98 of the Civil Aviation Act 1988, empower the Civil Aviation Safety Authority (CASA) to issue airworthiness directives (ADs) to ensure the safety of air navigation. These ADs apply to specific kinds of aircraft or aeronautical products, and they represent a legislative instrument as per the Legislative Instruments Act 2003. The ADs serve to mandate the continuing airworthiness of aircraft types registered in Australia, aligning with international standards outlined in Annex 8 to the Convention on International Civil Aviation. The State of Design, which in this context is the United States for certain propellers, has the responsibility to provide necessary information to maintain airworthiness, and CASA, as Australia’s national airworthiness authority, is tasked with assessing and issuing corresponding Australian ADs. For instance, CASA issued Australian AD/PMC/52 in response to the United States FAA’s AD 2008-08-01 concerning McCauley Propeller Systems propellers on BAE Systems Limited Jetstream Model 4100 and 4101 aeroplanes. This AD, which becomes effective on 28 August 2008, does not require public consultation or a Regulatory Impact Statement as it is issued in adherence to international obligations and is directly related to an AD from the relevant State of Design.

Key Provisions

The Civil Aviation Safety Regulations 1998, under regulation 39.001, empower the Civil Aviation Safety Authority (CASA) to issue airworthiness directives (ADs) for specific kinds of aircraft or aeronautical products. This regulatory mechanism is essential for maintaining safety standards in air navigation, as outlined in section 98 of the Civil Aviation Act 1988. According to subregulation 39.001(5), an AD is classified as a disallowable instrument under section 46A of the Acts Interpretation Act 1901 and, therefore, as a legislative instrument in accordance with section 6 of the Legislative Instruments Act 2003. This legislative framework ensures that ADs serve as a critical tool for enforcing safety mandates internationally, as stipulated under Annex 8 to the Convention on International Civil Aviation. The obligations imposed by the Civil Aviation Safety Regulations 1998 on parties such as CASA and States of Registry are significant. CASA, as Australia's national airworthiness authority, is mandated to assess ADs issued by the State of Design and, if necessary, issue corresponding Australian ADs to ensure compliance with international safety standards. The State of Registry, on the other hand, must develop or adopt requirements to ensure the continuing airworthiness of aircraft registered within its jurisdiction. These requirements are designed to uphold the highest safety standards, aligning with the obligations outlined in Annex 8 of the Convention on International Civil Aviation. Failure to comply with airworthiness directives can result in serious consequences. While the Civil Aviation Act 1988 and the Civil Aviation Safety Regulations 1998 do not explicitly detail specific offences or penalties in the provided text, non-compliance generally can lead to enforcement actions, including fines or other administrative penalties. Given the critical nature of airworthiness directives, violations could also result in the grounding of aircraft, leading to significant operational disruptions and potential safety hazards. The gravity of these consequences underscores the importance of adhering to ADs and maintaining stringent safety standards. The process of issuing an AD, as exemplified by CASA's issuance of AD/PMC/52 in response to the United States FAA's AD 2008-08-01, is conducted with a focus on international cooperation and regulatory alignment. The AD/PMC/52, which became effective on 28 August 2008, mandates specific safety requirements for McCauley Propeller Systems propellers fitted to BAE Systems Limited Jetstream Model 4100 and 4101 series aeroplanes. Given the international context and the obligations under the Convention on International Civil Aviation, this AD was issued without public consultation and does not require a Regulatory Impact Statement. Instead, it was made by the Manager, New Technologies and Systems, in the Airworthiness Engineering Branch, on behalf of CASA, in accordance with subsection 84A(2) of the Act, ensuring that the regulatory process is both efficient and effective.

Legal classification tags

Area of Law
Aviation Law
Instrument
Regulation
Concepts
Definitions & Interpretation
Reporting & Disclosure Obligations
Regulatory Standards

Interactions

Authorises

All Versions

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.