AD/A109/55 - Hydraulic Pipe Interference

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

Legislation au F2007L00701 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 EASA has issued AD 2007-0038 affecting Agusta A109E helicopters. The EASA is the State of Design for these helicopters.  CASA has assessed this AD and has issued Australian AD/A109E/55 which will become effective on 12 April 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 a comprehensive framework for regulating civil aviation activities within Australia, aiming to ensure the safety and efficiency of air navigation. Under this Act, the Governor-General has the authority to issue regulations necessary for the safety of air navigation, including the issuance of airworthiness directives (ADs) through regulation 39.001 of the Civil Aviation Safety Regulations 1998. This allows the Civil Aviation Safety Authority (CASA) to mandate specific requirements for aircraft and aeronautical products to maintain their airworthiness. The objective of these regulations is to align with international standards and conventions, particularly Annex 8 of the Convention on International Civil Aviation, which designates the State of Design as responsible for the continuing airworthiness of an aircraft type and the State of Registry as responsible for the airworthiness of individual aircraft. Consequently, CASA is tasked with assessing and, where necessary, issuing Australian ADs in response to directives from the relevant State of Design, ensuring compliance with international obligations and domestic safety standards.

Scope and Application

The Civil Aviation Act 1988, supported by the Civil Aviation Safety Regulations 1998, outlines the legislative framework within which airworthiness directives (ADs) are issued in Australia. Under section 98 of the Civil Aviation Act 1988, the Governor-General has the authority to make regulations for the safety of air navigation, while regulation 39.001 of the Civil Aviation Safety Regulations 1998 specifically empowers the Civil Aviation Safety Authority (CASA) to issue ADs for certain types of aircraft or aeronautical products. The ADs, as legislative instruments, are subject to disallowance under section 46A of the Acts Interpretation Act 1901 and are integral to maintaining the continuing airworthiness of aircraft types, as mandated by Annex 8 to the Convention on International Civil Aviation. The State of Design, such as the European Aviation Safety Agency (EASA) for the Agusta A109E helicopters, has the primary responsibility for issuing ADs, which CASA then assesses and, if necessary, translates into Australian ADs to enforce on aircraft registered in Australia. The process ensures compliance with international standards and maintains safety in Australian airspace.

Key Provisions

The Civil Aviation Act 1988 (section 98) empowers the Governor-General to enact regulations for air navigation safety, while regulation 39.001 of the Civil Aviation Safety Regulations 1998 allows the Civil Aviation Safety Authority (CASA) to issue airworthiness directives (ADs) for certain aircraft types and aeronautical products. These ADs are considered legislative instruments, as per section 46A of the Acts Interpretation Act 1901 and section 6 of the Legislative Instruments Act 2003. ADs are essential for maintaining the continuing airworthiness of aircraft types and are typically issued by the State of Design in accordance with Annex 8 of the Convention on International Civil Aviation. The State of Registry, which in Australia is CASA, must ensure the continuing airworthiness of individual aircraft, often by issuing national ADs in response to international directives. The obligations imposed by these regulations on the parties and entities they govern include the requirement for the State of Design to provide necessary information to ensure the continuing airworthiness of an aircraft type. The State of Registry, specifically CASA in Australia, must assess this information and, if necessary, issue a national AD to implement the State of Design’s requirements. For instance, when the European Union Aviation Safety Agency (EASA) issued AD 2007-0038 for Agusta A109E helicopters, CASA assessed this directive and issued Australian AD/A109E/55, which became effective on 12 April 2007. This process ensures that Australian registered aircraft meet international safety standards. There are no provisions in the Civil Aviation Act 1988 or the Civil Aviation Safety Regulations 1998 that specify offences, penalties, or civil/criminal consequences for non-compliance with airworthiness directives. However, the failure to comply with an AD can result in severe consequences for operators, including the grounding of affected aircraft, which can lead to substantial operational disruptions and financial losses. CASA has the authority to enforce compliance through various regulatory measures, including audits and inspections, and may take action against operators who fail to adhere to ADs. While specific penalties are not detailed in the text, non-compliance can ultimately result in significant safety risks and potential legal repercussions for the operators involved.

Legal classification tags

Area of Law
Aviation Law
Instrument
Regulation
Concepts
Definitions & Interpretation
Regulatory Standards
Enforcement Powers

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.