AD/ECUREUIL/54 - Main Rotor Shaft Oil Jet - CANCELLED

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Legislation au F2009L02757 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, the Civil Aviation Safety Authority (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.

CASA or its predecessors issued AD/ECUREUIL/54 affecting Eurocopter AS350 helicopters.  CASA has reviewed this AD and as a result has cancelled it.  The cancellation will become effective on 30 July 2009.  No replacement AD is required.

As this AD has been cancelled because of Australia’s obligations under the Convention on International Civil Aviation, no consultation with the Australian public has taken place on this AD cancellation.  The Office of Best Practice Regulation has determined that ADs do not require a Regulatory Impact Statement.

 

The AD has been made by the Manager, Systems and New Technologies in the Airworthiness Engineering Group, 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 regulation of civil aviation in Australia, with a primary focus on ensuring the safety of air navigation. The Act empowers the Governor-General to make regulations that contribute to this objective, as seen in the Civil Aviation Safety Regulations 1998. Specifically, regulation 39.001 allows the Civil Aviation Safety Authority (CASA) to issue airworthiness directives (ADs) for types of aircraft or aeronautical products, thereby ensuring adherence to safety standards. These directives are considered legislative instruments under the Legislative Instruments Act 2003. The enactment of the Civil Aviation Act 1988 and the subsequent regulations aimed to fill a critical gap in ensuring the continuing airworthiness of aircraft in Australia, aligning national practices with international standards as outlined in Annex 8 to the Convention on International Civil Aviation. The cancellation of a particular airworthiness directive (AD/ECUREUIL/54) concerning Eurocopter AS350 helicopters by CASA, effective from 30 July 2009, was a result of Australia's obligations under the Convention on International Civil Aviation, indicating the need to harmonise domestic regulations with international commitments. This cancellation did not require public consultation or a Regulatory Impact Statement, as determined by the Office of Best Practice Regulation. The AD was issued by CASA in accordance with the Civil Aviation Act 1988, reflecting the legislative framework's role in maintaining and updating safety regulations in the civil aviation sector.

Scope and Application

The Civil Aviation Safety Regulations 1998, under section 39.001, authorise the Civil Aviation Safety Authority (CASA) to issue airworthiness directives (ADs) for specific types of aircraft or aeronautical products. This legislative framework is intended to ensure the safety of air navigation, aligning with the overarching principles set forth in the Civil Aviation Act 1988. An airworthiness directive, as defined by subregulation 39.001(5), is classified as a disallowable instrument and is considered a legislative instrument under the Acts Interpretation Act 1901 and the Legislative Instruments Act 2003. These directives play a crucial role in maintaining the continuing airworthiness of aircraft, a responsibility that falls on the State of Registry as per Annex 8 to the Convention on International Civil Aviation. The State of Design is also mandated to provide necessary information to the States of Registry to uphold airworthiness standards. CASA has the authority to issue such directives and, in this instance, has cancelled an existing AD for Eurocopter AS350 helicopters, effective from 30 July 2009, without the need for a replacement directive. This action aligns with international obligations and does not require public consultation or a Regulatory Impact Statement, as determined by the Office of Best Practice Regulation.

Key Provisions

The Civil Aviation Act 1988, as supplemented by the Civil Aviation Safety Regulations 1998, provides the legal framework for the issuance of airworthiness directives (ADs) in Australia. Under section 98 of the Act, the Governor-General has the authority to make regulations that are in the interests of air navigation safety. Regulation 39.001 of the Civil Aviation Safety Regulations 1998 grants the Civil Aviation Safety Authority (CASA) the power to issue ADs for specific types of aircraft or aeronautical products. These directives are considered disallowable instruments under section 46A of the Acts Interpretation Act 1901 and are therefore legislative instruments in accordance with section 6 of the Legislative Instruments Act 2003. The obligations imposed by the ADs are primarily on CASA, as the authority responsible for ensuring the continuing airworthiness of aircraft within Australia. CASA must adhere to its obligations under the Convention on International Civil Aviation, particularly those outlined in Annex 8, which assign the State of Design overall responsibility for the continuing airworthiness of an aircraft type. CASA must also ensure that the State of Registry of individual aircraft meets its responsibilities under the Convention, developing or adopting requirements to ensure the continuing airworthiness of aircraft within its jurisdiction. In the case of the cancelled AD/ECUREUIL/54, CASA's actions are consistent with its obligations under international aviation agreements. The State of Registry, in this case Australia, must ensure that ADs issued comply with international standards and that they are based on the most current and reliable information. The cancellation of AD/ECUREUIL/54 was necessary to align with Australia’s obligations under the Convention on International Civil Aviation, and no public consultation was required as determined by the Office of Best Practice Regulation, which has also concluded that ADs do not necessitate a Regulatory Impact Statement. Failure to comply with ADs can result in severe civil and criminal consequences. For instance, operating an aircraft that does not meet the requirements of an applicable AD can result in penalties under the Civil Aviation Act 1988. The maximum penalties for such offences can include substantial fines and imprisonment, reflecting the serious implications of non-compliance for aviation safety. CASA's issuance and enforcement of ADs are critical to maintaining the high standards of safety required in the aviation industry.

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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.