AD/CESSNA 150/43 - Aircraft Repair - CANCELLED

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Legislation au F2007L04816 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.

CASA issued AD/CESSNA 150/43 affecting Cessna 150 series aircraft in 1991.  CASA has reviewed this AD and as a result has decided to cancel it.  The cancellation will become effective on 17 January 2008.  No replacement AD is required, as the original unsafe condition has long ceased to exist.

No consultation with the Australian public has taken place on this AD cancellation, because the cancellation results in a reduction of the regulatory burden.  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, Airframes in the Airworthiness Engineering Branch, 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 the regulation of civil aviation in Australia, ensuring safety and efficiency in the industry. One of the key provisions of the Act is section 98, which empowers the Governor-General to make regulations in the interest of the safety of air navigation. Under this authority, the Civil Aviation Safety Regulations 1998 were created, including regulation 39.001 that allows the Civil Aviation Safety Authority (CASA) to issue airworthiness directives (ADs) for specific types of aircraft or aeronautical products. This regulation is intended to maintain the safety standards of aircraft registered in Australia, aligning with international standards set by the Convention on International Civil Aviation. In line with this regulatory framework, CASA issued an airworthiness directive (AD/CESSNA 150/43) for Cessna 150 series aircraft in 1991. Following a review, CASA has decided to cancel this AD, effective from 17 January 2008, as the original unsafe condition addressed by the directive has long ceased to exist. This cancellation is intended to reduce the regulatory burden without necessitating a replacement AD. The decision to cancel the AD was made by the Manager, Airframes in the Airworthiness Engineering Branch, on behalf of CASA, under subsection 84A(2) of the Act.

Scope and Application

The Civil Aviation Act 1988, supplemented by the Civil Aviation Safety Regulations 1998, provides the framework within which the Civil Aviation Safety Authority (CASA) can issue airworthiness directives (ADs). These directives apply to specific kinds of aircraft or aeronautical products and are mandated by regulation 39.001 of the Civil Aviation Safety Regulations 1998. As per subregulation 39.001(5), ADs are considered disallowable instruments under the Acts Interpretation Act 1901 and are legislative instruments as per the Legislative Instruments Act 2003. The issuing of ADs is consistent with Annex 8 to the Convention on International Civil Aviation, which stipulates that the State of Design holds overall responsibility for the continuing airworthiness of an aircraft type, while the State of Registry is responsible for the airworthiness of individual aircraft. CASA, acting as Australia's national airworthiness authority, must evaluate any AD issued by a State of Design and, if necessary, issue an Australian AD to enforce the requirements. For instance, CASA issued an AD for Cessna 150 series aircraft in 1991, which has now been cancelled as of 17 January 2008 due to the resolution of the original safety concern. This cancellation does not require public consultation or a Regulatory Impact Statement, as it reduces the regulatory burden. The AD cancellation was authorised by the Manager, Airframes in the Airworthiness Engineering Branch, on behalf of CASA, in accordance with subsection 84A(2) of the Civil Aviation Act 1988.

Key Provisions

The Civil Aviation Act 1988, through section 98, empowers the Governor-General to create regulations that serve the Act's purposes and enhance air navigation safety. This legislative framework allows for the development of detailed safety protocols and standards within the aviation sector. Regulation 39.001 of the Civil Aviation Safety Regulations 1998 further specifies that the Civil Aviation Safety Authority (CASA) can issue airworthiness directives (ADs) for various types of aircraft and aeronautical products. These directives are crucial for maintaining and ensuring the continuing safety and airworthiness of aircraft. According to subregulation 39.001(5), ADs are considered disallowable instruments, as defined by section 46A of the Acts Interpretation Act 1901, and thus they are legislative instruments under the Legislative Instruments Act 2003. The obligations imposed by these provisions are significant. The State of Design, which is the country where the aircraft type is designed, bears the responsibility for the continuing airworthiness of that type, as stipulated in Annex 8 to the Convention on International Civil Aviation. This includes providing necessary information to ensure the safety of aircraft registered in other countries, such as Australia. The State of Registry, in this case, Australia, must develop or adopt requirements that ensure the airworthiness of individual aircraft. When an AD is issued by the State of Design, CASA must assess this information and, if necessary, issue an Australian AD to enforce the requirements set by the State of Design. This process ensures that Australian-registered aircraft comply with international safety standards. Non-compliance with ADs can result in severe consequences. Breaches of these regulations can lead to civil or criminal penalties, depending on the nature and severity of the violation. While the specific penalties are not detailed in the provided text, it is clear that the regulatory framework is designed to enforce strict adherence to airworthiness standards. CASA's authority to issue and enforce ADs underscores the importance of maintaining high safety standards within the aviation industry. Failure to comply with these directives can result in penalties that may include fines, suspension of airworthiness certificates, and other regulatory actions that could impact the operation of the aircraft.

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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.