AD/CESSNA 170/2 - Right Wing Rear Spar - CANCELLED

Overview

The Civil Aviation Act 1988, enacted by the Australian Parliament, provides the legislative framework for civil aviation safety in Australia. It empowers the Governor-General to create regulations that serve the interests of air navigation safety. Complementing this act, the Civil Aviation Safety Regulations 1998 were established to provide further details on the implementation of these safety measures. Specifically, regulation 39.001 allows the Civil Aviation Safety Authority (CASA) to issue airworthiness directives for different kinds of aircraft or aeronautical products. The Civil Aviation Act 1988 aims to ensure that all civil aviation activities in Australia meet the highest safety standards, aligning with international conventions such as the Convention on International Civil Aviation. In line with its mandate, CASA issued an airworthiness directive (AD) affecting Cessna 170 and 172 model aircraft. However, due to Australia’s obligations under the Convention on International Civil Aviation, CASA reviewed and subsequently cancelled this AD, which will take effect on 31 July 2008. This cancellation was carried out without public consultation and did not require a Regulatory Impact Statement, as determined by the Office of Best Practice Regulation. The decision to cancel the AD was made by the Manager, Airframes in the Airworthiness Engineering Branch, on behalf of CASA, in accordance with the Civil Aviation Act 1988.

Scope and Application

The Civil Aviation Act 1988, coupled with the Civil Aviation Safety Regulations 1998, establishes a comprehensive framework for ensuring the safety of air navigation in Australia. Under this legislative umbrella, the Civil Aviation Safety Authority (CASA) is empowered to issue airworthiness directives (ADs) concerning specific types of aircraft or aeronautical products, as detailed in regulation 39.001 of the Civil Aviation Safety Regulations 1998. These ADs, which are legislative instruments under the Legislative Instruments Act 2003, are critical tools for maintaining the continuing airworthiness of aircraft, a responsibility that rests with the State of Registry under international conventions such as the Convention on International Civil Aviation. In alignment with these obligations, CASA has the authority to issue, review, and cancel ADs as necessary, reflecting both national safety standards and international commitments. For instance, CASA issued an AD for Cessna 170 and 172 models, which has since been cancelled effective 31 July 2008, demonstrating the dynamic nature of aviation safety regulations and the importance of continuous oversight.

Key Provisions

The key provisions of the Civil Aviation Act 1988, as applied through regulation 39.001 of the Civil Aviation Safety Regulations 1998, empower the Civil Aviation Safety Authority (CASA) to issue airworthiness directives (ADs) concerning specific types of aircraft or aeronautical products (39.001(5)). An AD is legally considered a disallowable instrument under section 46A of the Acts Interpretation Act 1901, and it falls within the definition of a legislative instrument as per section 6 of the Legislative Instruments Act 2003. The issuance of ADs is crucial for maintaining the continuing airworthiness of aircraft, a responsibility primarily held by the State of Design under Annex 8 to the Convention on International Civil Aviation. The State of Registry, which in Australia is CASA, also plays a significant role in ensuring the continuing airworthiness of individual aircraft. The obligations imposed by these regulations include the requirement for the State of Design to provide necessary information to States of Registry to support the airworthiness of aircraft types. This is a key aspect of international cooperation in aviation safety. CASA, as the State of Registry in Australia, must either develop or adopt appropriate requirements to ensure that the aircraft within its jurisdiction maintain their airworthiness. CASA has previously issued an airworthiness directive, AD/CESSNA 170/2, affecting Cessna 170 and 172 model aircraft, which has now been cancelled due to Australia’s obligations under the Convention on International Civil Aviation. This cancellation, effective from 31 July 2008, does not require a replacement directive. The cancellation of the AD did not involve consultation with the Australian public or the preparation of a Regulatory Impact Statement, as determined by the Office of Best Practice Regulation. This decision aligns with the understanding that ADs do not necessitate such extensive regulatory processes. The Manager, Airframes in the Airworthiness Engineering Branch, has made this AD on behalf of CASA, in accordance with subsection 84A(2) of the Act. The regulatory framework allows for the imposition of civil or criminal penalties for breaches of these obligations, although specific penalties are not detailed within the text provided. However, the overarching goal remains the maintenance of the highest standards of aviation safety through effective airworthiness management.