AD/AC-100/18 - Nose Landing Gear Steering Rod - Modification - CANCELLED

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Legislation au F2008L02791 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/AC-100/18 affecting all models of S.L. Industries Commander 100 and Volair 10 series aircraft.  CASA has assessed this AD and as a result has cancelled Australian AD/AC-100/18.  The cancellation will become effective on 28 August 2008.  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 Branch, on behalf of CASA, in accordance with subsection 84A (2) of the Act.

 

 

Overview

The Civil Aviation Act 1988, enacted by the Commonwealth Parliament, was introduced to establish a comprehensive regulatory framework for the safe and efficient operation of civil aviation in Australia. This legislation provides the foundation for ensuring that aviation activities are conducted in a manner that protects the public and maintains high safety standards. The Act authorises the creation of regulations necessary for the safety of air navigation, including the issuance of airworthiness directives by the Civil Aviation Safety Authority (CASA) to ensure aircraft continue to meet safety standards. The Civil Aviation Safety Regulations 1998, made under the authority of the Act, further elaborate on these requirements, allowing CASA to issue specific directives to address identified safety issues. The objective of these regulations is to ensure the continuing airworthiness of aircraft, aligning with international standards set by the Convention on International Civil Aviation.

Scope and Application

The Civil Aviation Act 1988, in conjunction with the Civil Aviation Safety Regulations 1998, provides the framework for the issuance of airworthiness directives (ADs) by the Civil Aviation Safety Authority (CASA) to ensure the safety of air navigation. Under section 98 of the Civil Aviation Act 1988, the Governor-General has the authority to make regulations in the interest of safety, and regulation 39.001 of the Civil Aviation Safety Regulations 1998 specifically empowers CASA to issue ADs for certain kinds of aircraft or aeronautical products. These ADs are legislative instruments that must comply with the Acts Interpretation Act 1901 and the Legislative Instruments Act 2003. The ADs are a means by which Australia fulfills its obligations under Annex 8 to the Convention on International Civil Aviation, whereby the State of Design is responsible for the continuing airworthiness of an aircraft type, and the State of Registry must ensure the continuing airworthiness of individual aircraft. Consequently, when a State of Design issues an AD, CASA must assess the information and, if appropriate, issue a corresponding Australian AD. In this particular case, CASA has cancelled the Australian AD/AC-100/18 for all models of S.L. Industries Commander 100 and Volair 10 series aircraft, effective from 28 August 2008, as the unsafe condition addressed by the AD no longer exists. The cancellation is a direct result of Australia's international obligations and does not require public consultation or a Regulatory Impact Statement.

Key Provisions

The Civil Aviation Act 1988, along with the Civil Aviation Safety Regulations 1998, outlines the framework for ensuring the safety of air navigation in Australia. Specifically, section 98 of the Act empowers the Governor-General to create regulations that serve the Act's purpose and the safety of air navigation, while regulation 39.001 of the Regulations allows the Civil Aviation Safety Authority (CASA) to issue airworthiness directives (ADs) for certain types of aircraft or aeronautical products. These ADs are considered legislative instruments under section 46A of the Acts Interpretation Act 1901 and section 6 of the Legislative Instruments Act 2003. The State of Design holds the overarching responsibility for the continuing airworthiness of an aircraft type under Annex 8 of the Convention on International Civil Aviation, and must provide necessary information to the States of Registry to ensure the aircraft's continued airworthiness. In practice, the State of Registry must develop or adopt requirements to ensure the continuing airworthiness of aircraft registered within its jurisdiction. When a State of Design issues an AD for a type of aircraft registered in Australia, CASA, as Australia's national airworthiness authority, must assess this information and, if necessary, issue an Australian AD to mandate the requirements of the State of Design. For example, CASA had previously issued AD/AC-100/18 affecting all models of S.L. Industries Commander 100 and Volair 10 series aircraft. After assessment, CASA cancelled Australian AD/AC-100/18, effective 28 August 2008, due to the unsafe condition no longer existing, and no replacement AD was required. There are specific obligations and requirements under this Act and its associated Regulations. The State of Design must provide all necessary information to ensure the continuing airworthiness of an aircraft type. The State of Registry must then develop or adopt requirements to ensure the continuing airworthiness of aircraft registered within its jurisdiction. CASA, as the national airworthiness authority, must assess the information provided by the State of Design and issue an Australian AD if appropriate. This ensures that all aircraft registered in Australia meet the necessary safety standards. Failure to comply with the requirements set out in the ADs can lead to civil or criminal consequences. The Civil Aviation Act 1988 and the Civil Aviation Safety Regulations 1998 impose obligations on aircraft owners, operators, and maintenance personnel to ensure that their aircraft meet the continuing airworthiness requirements. Non-compliance with an AD can result in penalties, including fines, suspension or revocation of an aircraft's certificate of airworthiness, or both. In severe cases, criminal charges may be brought against individuals responsible for the non-compliance. The specific penalties depend on the nature and severity of the breach, but they can be significant, reflecting the importance of maintaining the highest safety standards in aviation.

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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.