AD/CESSNA 150/10 Amdt 3 - Plastic Control Wheel

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Legislation au F2009L02814 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 raised AD/CESSNA 150/10 Amendment 2 to detect cracks in plastic control wheels in Cessna 150 and 152 model aircraft in 1969.  As a result of a review of this AD, CASA has amended the directive to remove reference to an outdated Cessna Service Letter.  AD/CESSNA 150/10 Amendment 3 will become effective on
30 July 2009.  This AD cancels and replaces the previous issue.

CASA has not consulted with the Australian industry and public because the amendment reduces the regulatory burden on Australian industry.

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 and Structures 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 safety and operational standards. In line with this Act, the Civil Aviation Safety Regulations 1998 were established to implement and enforce the provisions of the Act, ensuring the safety of air navigation. One of the key mechanisms under these Regulations is the issuance of airworthiness directives (ADs), as outlined in regulation 39.001, which allows the Civil Aviation Safety Authority (CASA) to mandate specific safety measures for aircraft types or aeronautical products. The Civil Aviation Act 1988 empowers the Governor-General to create such regulations, with the overarching goal of maintaining and enhancing the safety of air navigation. The issuing of ADs is integral to fulfilling international obligations, particularly under Annex 8 to the Convention on International Civil Aviation, where the State of Design holds responsibility for the continuing airworthiness of an aircraft type, necessitating the dissemination of necessary information to States of Registry, including Australia.

Scope and Application

The Civil Aviation Safety Regulations 1998, under section 39.001, empower the Civil Aviation Safety Authority (CASA) to issue airworthiness directives (ADs) for specific kinds of aircraft or aeronautical products. This regulatory mechanism is integral to ensuring the continuing airworthiness of aircraft as per international standards set by Annex 8 to the Convention on International Civil Aviation. The ADs serve as critical tools for maintaining safety standards and are mandated to be issued by most ICAO Contracting States, including Australia. These directives are legally binding, falling under the category of disallowable instruments as stipulated in section 46A of the Acts Interpretation Act 1901, and are recognised as legislative instruments under the Legislative Instruments Act 2003. The ADs are issued by CASA, Australia's national airworthiness authority, following assessments of information provided by the State of Design and in alignment with the responsibilities of the State of Registry under Annex 8. This regulatory framework ensures that specific types of aircraft, such as the Cessna 150 and 152 models, adhere to necessary safety modifications, as demonstrated by the recent amendment to AD/CESSNA 150/10 Amendment 3, effective from 30 July 2009.

Key Provisions

The Civil Aviation Act 1988, in particular section 98, empowers the Governor-General to create regulations aimed at ensuring the safety of air navigation. 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 specific types of aircraft or aeronautical products. An AD, as described in subregulation 39.001(5), is a disallowable instrument under section 46A of the Acts Interpretation Act 1901, and thus qualifies as a legislative instrument according to section 6 of the Legislative Instruments Act 2003. These directives play a crucial role in maintaining the continuing airworthiness of aircraft, a responsibility that is ultimately overseen by the State of Design under Annex 8 to the Convention on International Civil Aviation. The obligations imposed by these regulations are multifaceted. The State of Design, which is responsible for the continuing airworthiness of an aircraft type, must provide necessary information to ensure the safety and compliance of aircraft within the jurisdiction. The State of Registry, which is responsible for the individual aircraft, must either develop or adopt requirements to ensure the continuing airworthiness of the aircraft registered within its territory. When a State of Design issues an AD, CASA, as Australia's national airworthiness authority, is required to evaluate this information and, if necessary, issue a corresponding Australian AD to enforce the requirements set forth by the State of Design. This ensures that all aircraft operating within Australia comply with international safety standards. Failure to comply with the directives issued by CASA can lead to significant consequences. While specific penalties for non-compliance are not detailed within this text, the overarching legislation does provide for potential civil and criminal penalties. The severity of these penalties can vary depending on the nature and extent of the breach, but they serve as a deterrent to non-compliance. The text notes that CASA has not consulted with the Australian industry and public regarding a specific amendment to AD/CESSNA 150/10 because it reduces the regulatory burden on the industry. Additionally, the Office of Best Practice Regulation has determined that ADs do not require a Regulatory Impact Statement, streamlining the process for issuing these important safety directives. In summary, the AD/CESSNA 150/10 Amendment 3, which becomes effective on 30 July 2009, is an example of the regulatory measures CASA employs to ensure the safety and airworthiness of aircraft in Australia. By issuing and enforcing ADs, CASA maintains compliance with international standards and protects public safety in the aviation sector. The streamlined process for issuing these directives, while reducing some regulatory burdens, ensures that the primary focus remains on maintaining the highest safety standards.

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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.