AD/AS 355/86 - Tail Rotor Controls

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

Legislation au F2005L01067 Not in force Legislative Instrument

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CIVIL AVIATION ACT 1988

CIVIL AVIATION 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.  An AD is a disallowable instrument under section 46A of the Acts Interpretation Act 1901.

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 French DGAC has issued AD F-2005-043 affecting AS 350 rotorcraft.  France is the State of Design for this type.  CASA has assessed this AD and has issued Australian AD/AS 355/86, which will become effective on 9 June 2005.

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 Section Head - Systems, Airworthiness Standards Branch, Standards Division, on behalf of CASA, in accordance with subsection 84A (2) of the Act. 

Overview

The Civil Aviation Act 1988 is a foundational piece of legislation in Australia, designed to regulate civil aviation and ensure the safety of air navigation within the country. Enacted by the Australian Parliament, this Act provides the legislative framework for the Civil Aviation Safety Authority (CASA) to develop and enforce aviation safety standards, including the issuance of airworthiness directives (ADs) to ensure the continuing safety of aircraft. The ADs are a crucial tool under the Act, mandated by international obligations under the Convention on International Civil Aviation, which requires States of Design to provide necessary information for the continuing airworthiness of aircraft types, a responsibility adopted and enforced by the respective States of Registry. CASA, as Australia’s national airworthiness authority, is tasked with assessing such international directives and issuing corresponding Australian ADs as necessary. This ensures compliance with both international standards and Australian safety regulations, thereby maintaining the safety of air navigation within the country.

Scope and Application

The Civil Aviation Regulations 1998, under the Civil Aviation Act 1988, allow the Civil Aviation Safety Authority (CASA) to issue airworthiness directives (ADs) concerning certain types of aircraft or aeronautical products. This applies to all aircraft registered in Australia, regardless of the State of Design, ensuring compliance with international standards and maintaining safety in air navigation. Airworthiness directives are enforceable under the Act, and their issuance is a critical function of CASA in upholding the continuing airworthiness of aircraft within Australia. Although ADs do not require public consultation or a Regulatory Impact Statement, they are essential for ensuring that Australian-registered aircraft meet international safety standards, particularly when responding to directives issued by the State of Design. This ensures that Australian civil aviation practices align with global aviation safety norms and obligations under the Convention on International Civil Aviation.

Key Provisions

The Civil Aviation Act 1988, through section 98, empowers the Governor-General to establish regulations that serve the Act's purpose, with a primary focus on the safety of air navigation. 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 kinds of aircraft or aeronautical products. These ADs are considered disallowable instruments under section 46A of the Acts Interpretation Act 1901, meaning they can be annulled by either House of the Parliament. Under these provisions, CASA, as Australia's national airworthiness authority, must ensure that an Australian AD is issued in response to an AD from the State of Design when it affects aircraft registered in Australia. This process is aligned with Annex 8 to the Convention on International Civil Aviation, which mandates that the State of Design has the overarching responsibility for the continuing airworthiness of an aircraft type, while the State of Registry is responsible for the airworthiness of individual aircraft. Consequently, when a State of Design, such as France in the case of the AD F-2005-043 for AS 350 rotorcraft, issues an AD, CASA must assess this information and issue a corresponding Australian AD if necessary. This ensures compliance with international standards and maintains the safety and airworthiness of aircraft within Australia. The obligations imposed by these provisions require CASA to closely monitor and respond to ADs issued by the States of Design. CASA must thoroughly assess the ADs to determine their applicability to aircraft registered in Australia and issue corresponding Australian ADs as needed. Additionally, the State of Registry, represented by CASA in this case, must ensure that all aircraft registered under its purview comply with the ADs, which may include conducting inspections, maintenance, or modifications as specified in the directives. Failure to comply with an AD can result in serious legal consequences. Under the Civil Aviation Act 1988, any person who contravenes an AD can be subject to penalties, including fines and potential imprisonment. The specific penalties for breach can vary, but they are designed to enforce compliance and maintain the high safety standards required by aviation regulations. In severe cases, non-compliance may also result in the grounding of affected aircraft, which can have significant operational and financial repercussions for the operators involved.

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Administrative Law
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.