AD/HU 269/33 - Main Rotor Mast - Inspection for Internal Corrosion - CANCELLED

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Legislation au F2009L01390 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 Civil Aviation Safety Authority or its predecessors issued AD/HU 269/33 affecting Schweizer (Hughes) 269 series Helicopters.  CASA has assessed this AD and as a result has cancelled Australian AD/HU 269/33.  The cancellation will become effective on 7 May 2009.  No replacement AD is required, as the unsafe condition no longer exists.

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 establish a comprehensive framework for the regulation of civil aviation in Australia, ensuring the safety and efficiency of air navigation. Under the authority of the Act, the Governor-General is empowered to make regulations that serve the interests of air navigation safety, with a key instrument being the Civil Aviation Safety Regulations 1998. These regulations, particularly regulation 39.001, allow the Civil Aviation Safety Authority (CASA) to issue airworthiness directives (ADs) to maintain the continuing airworthiness of aircraft and aeronautical products. This legislative structure is designed to meet Australia’s obligations under international agreements such as Annex 8 to the Convention on International Civil Aviation, ensuring that the State of Design and State of Registry both have defined roles in maintaining aircraft safety standards. The ADs serve as critical tools for disseminating necessary safety information across ICAO Contracting States, including Australia.

Scope and Application

The Civil Aviation Act 1988 and the Civil Aviation Safety Regulations 1998 provide the legal framework for the issuance of airworthiness directives (ADs) by the Civil Aviation Safety Authority (CASA). Under these legislative instruments, CASA is empowered to issue ADs for specific types of aircraft or aeronautical products to ensure the safety of air navigation. These ADs are considered legislative instruments and are subject to disallowance in accordance with the Acts Interpretation Act 1901 and the Legislative Instruments Act 2003. The issuing of ADs is also guided by Annex 8 of the Convention on International Civil Aviation, which places responsibility on the State of Design to provide necessary information to States of Registry to ensure the continuing airworthiness of aircraft types. The State of Registry, such as CASA in Australia, must then develop or adopt requirements to enforce these ADs within their jurisdiction. This regulatory process ensures that any safety issues identified with specific aircraft types are addressed and rectified in a manner consistent with international standards and obligations.

Key Provisions

The Civil Aviation Act 1988 and the Civil Aviation Safety Regulations 1998 together provide the framework for the issuance of airworthiness directives (ADs) in Australia. Section 98 of the Civil Aviation Act 1988 allows the Governor-General to make regulations necessary for the safety of air navigation. Under regulation 39.001 of the Civil Aviation Safety Regulations 1998, the Civil Aviation Safety Authority (CASA) can issue ADs for specific types of aircraft or aeronautical products. An AD, as outlined in subregulation 39.001(5), is classified as a disallowable instrument under the Acts Interpretation Act 1901 and is considered a legislative instrument under the Legislative Instruments Act 2003. Under the Convention on International Civil Aviation, the State of Design holds the primary responsibility for the continuing airworthiness of an aircraft type and must furnish necessary information to the States of Registry. In Australia, CASA, as the national airworthiness authority, is responsible for assessing information from the State of Design and issuing Australian ADs to ensure compliance with the State of Design's requirements. The State of Registry is tasked with ensuring the continuing airworthiness of individual aircraft. When a State of Design issues an AD, CASA must evaluate this information and, if necessary, issue an Australian AD. In the specific case of AD/HU 269/33, which affected Schweizer (Hughes) 269 series helicopters, CASA assessed the AD and decided to cancel Australian AD/HU 269/33. This decision was made because the unsafe condition addressed by the AD no longer exists. The cancellation is effective as of 7 May 2009, and no replacement AD is necessary. This action was taken in accordance with Australia's obligations under the Convention on International Civil Aviation, and thus, there was no consultation with the Australian public. Additionally, the Office of Best Practice Regulation has determined that ADs do not require a Regulatory Impact Statement. The AD was issued by the Manager Systems and New Technologies in the Airworthiness Engineering Group on behalf of CASA, in compliance with subsection 84A(2) of the Act. Breaching the requirements set forth in the ADs can lead to significant legal consequences. Failure to comply with an AD can result in penalties for the aircraft operator, potentially including fines and imprisonment. The specific penalties are not detailed in the provided text, but generally, such breaches can attract substantial fines under the Civil Aviation Act 1988 and may also result in criminal charges. Non-compliance can also lead to the grounding of aircraft, which can have severe operational and financial implications for the operator.

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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.