AD/CESSNA 150/27 - Seat Frame - CANCELLED

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Legislation au F2008L00195 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 150/27, affecting Cessna 150 model aircraft in 1978.  CASA has reviewed this AD and as a result has decided to cancel it.  The cancellation will become effective on 14 February 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 legal framework for the regulation of civil aviation in Australia, addressing the need for comprehensive and coordinated oversight of the aviation industry to ensure safety and efficiency. The Act empowers the Governor-General to create regulations that serve the interests of air navigation safety, as articulated in section 98. One such regulation is detailed in the Civil Aviation Safety Regulations 1998, specifically regulation 39.001, which allows the Civil Aviation Safety Authority (CASA) to issue airworthiness directives (ADs) for specific types of aircraft or aeronautical products. The ADs are legislative instruments that require assessment and potential implementation by CASA to ensure compliance with international standards, such as those set out in Annex 8 to the Convention on International Civil Aviation. The Civil Aviation Safety Regulations also clarify that ADs are disallowable instruments under section 46A of the Acts Interpretation Act 1901 and are subject to the Legislative Instruments Act 2003. CASA, as Australia's national airworthiness authority, has the responsibility to review and, when necessary, cancel existing ADs that no longer address current safety concerns. An example of this is AD/CESSNA 150/27, which CASA has decided to cancel due to the resolution of the initial unsafe condition it was intended to address. This cancellation reflects a reduction in regulatory burden, and according to the Office of Best Practice Regulation, does not require a Regulatory Impact Statement. The cancellation process was executed by the Manager, Airframes in the Airworthiness Engineering Branch, on behalf of CASA, as per subsection 84A(2) of the Civil Aviation Act 1988.

Scope and Application

The Civil Aviation Act 1988 and the Civil Aviation Safety Regulations 1998 govern the issuance of airworthiness directives (ADs) in Australia, with the Civil Aviation Safety Authority (CASA) being the national airworthiness authority responsible for these directives. Under these legislative frameworks, CASA has the authority to issue ADs for specific types of aircraft or aeronautical products, as stipulated in regulation 39.001 of the Civil Aviation Safety Regulations 1998. These ADs serve as legislative instruments, subject to disallowance under the Acts Interpretation Act 1901 and the Legislative Instruments Act 2003. The ADs are integral to ensuring the continuing airworthiness of aircraft, as per Annex 8 of the Convention on International Civil Aviation, with the State of Design bearing the primary responsibility for providing necessary information and the State of Registry implementing these directives. In the case of AD/CESSNA 150/27, which affected Cessna 150 model aircraft manufactured in 1978, CASA has decided to cancel this directive, effective from 14 February 2008, due to the resolution of the original unsafe condition without the need for a replacement directive. This decision was made without public consultation as it reduces the regulatory burden, and the Office of Best Practice Regulation has deemed it unnecessary to prepare a Regulatory Impact Statement.

Key Provisions

The Civil Aviation Act 1988, through section 98, empowers the Governor-General to establish regulations for air navigation safety. In accordance with regulation 39.001 of the Civil Aviation Safety Regulations 1998, the Civil Aviation Safety Authority (CASA) has the authority to issue airworthiness directives (ADs) for specific types of aircraft or aeronautical products. These ADs are designated as disallowable instruments under section 46A of the Acts Interpretation Act 1901, meaning they must be tabled in Parliament within a certain period. Additionally, as per section 6 of the Legislative Instruments Act 2003, ADs are considered legislative instruments. Under the obligations set by the Civil Aviation Safety Regulations 1998, the State of Design, which is the country where the aircraft type was designed, holds the primary responsibility for the aircraft's ongoing airworthiness. This includes providing necessary information to the States of Registry to ensure continued airworthiness. Conversely, the State of Registry, which is the country where the aircraft is registered, is responsible for ensuring the aircraft's ongoing airworthiness by developing or adopting appropriate requirements. In the case of Australia, CASA, as the national airworthiness authority, is required to assess ADs issued by the State of Design and, if necessary, issue Australian ADs to enforce these requirements. In relation to AD/CESSNA 150/27, which pertains to Cessna 150 model aircraft from 1978, CASA has decided to cancel this AD. The cancellation is effective from 14 February 2008. This decision was made because the original unsafe condition addressed by the AD has long since ceased to exist, rendering a replacement AD unnecessary. Furthermore, no public consultation was conducted as the cancellation results in a reduction of regulatory burden, and the Office of Best Practice Regulation has determined that such ADs do not require a Regulatory Impact Statement. The AD was issued by the Manager, Airframes in the Airworthiness Engineering Branch, on behalf of CASA, in accordance with subsection 84A(2) of the Act. In terms of penalties and consequences, the Civil Aviation Safety Regulations 1998 and the Civil Aviation Act 1988 impose various obligations and requirements on the parties governed by these regulations. Failure to comply with an AD can result in severe civil and criminal penalties. For instance, section 38 of the Civil Aviation Act 1988 provides for fines and imprisonment for breaches of airworthiness requirements. Specifically, individuals or entities found in violation of an AD could face fines of up to $210,000 for individuals and $1,050,000 for corporations, as well as potential imprisonment. These stringent measures underscore the importance of adhering to airworthiness directives to ensure the safety of air navigation.

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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.