AD/CESSNA 170/21 - Control Systems - CANCELLED

Overview

The Civil Aviation Act 1988 was enacted to ensure the safety and efficiency of civil aviation in Australia, addressing the need for a robust legal framework governing air navigation, aircraft registration, and airworthiness standards. The Act grants the Governor-General the authority to make regulations necessary for the safety of air navigation, a power exercised through the Civil Aviation Safety Regulations 1998. Specifically, regulation 39.001 allows the Civil Aviation Safety Authority (CASA) to issue airworthiness directives (ADs) for aircraft and aeronautical products, which are legislative instruments subject to disallowance under the Acts Interpretation Act 1901. In accordance with international obligations under Annex 8 to the Convention on International Civil Aviation, 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. CASA, as Australia's national airworthiness authority, assesses and issues ADs based on directives from the State of Design. The Act facilitates the cancellation of ADs, such as AD/CESSNA 170/21 for Cessna 172 aircraft, when the unsafe condition no longer exists, as determined by CASA. This specific AD cancellation was executed by the Acting Manager of Systems and New Technologies in the Airworthiness Engineering Branch on behalf of CASA, in compliance with the Act.

Scope and Application

The Civil Aviation Act 1988, together with the Civil Aviation Safety Regulations 1998, governs the issuance of airworthiness directives (ADs) in Australia, as per section 98 and regulation 39.001, respectively. These directives apply to types of aircraft and aeronautical products, and are issued by the Civil Aviation Safety Authority (CASA) to ensure the continuing airworthiness of aircraft. The scope of these regulations extends to all aircraft registered in Australia, encompassing both the State of Design and the State of Registry, in line with the obligations under Annex 8 of the Convention on International Civil Aviation. The ADs serve as legislative instruments and are subject to disallowance as per section 46A of the Acts Interpretation Act 1901. Any ADs issued by CASA are subject to the Legislative Instruments Act 2003, and in the case of AD/CESSNA 170/21, its cancellation was a direct result of Australia's international obligations. It is worth noting that the cancellation of such ADs does not require public consultation or a Regulatory Impact Statement, as determined by the Office of Best Practice Regulation. The authority to issue or cancel these ADs is vested in CASA, acting under the delegated powers provided by the Act.

Key Provisions

The Civil Aviation Act 1988, and specifically section 98, empowers the Governor-General to enact regulations that align with the Act and serve the safety of air navigation. This section lays the groundwork for the creation of various regulations, including those pertaining to airworthiness directives (ADs) under regulation 39.001 of the Civil Aviation Safety Regulations 1998. An AD, as defined under subregulation 39.001(5), is a disallowable instrument under section 46A of the Acts Interpretation Act 1901, and as such, it is also classified as a legislative instrument according to section 6 of the Legislative Instruments Act 2003. These directives are critical tools in maintaining the airworthiness of aircraft and aeronautical products, and they are issued by the Civil Aviation Safety Authority (CASA), which acts as Australia's national airworthiness authority. The obligations under the Civil Aviation Act 1988 and the Civil Aviation Safety Regulations 1998 are extensive. The State of Design, which is typically the country where the aircraft was designed, bears the primary responsibility for the continuing airworthiness of an aircraft type. This entails providing necessary information to ensure the ongoing airworthiness of the aircraft to the States of Registry. In parallel, the State of Registry, which is the country where the aircraft is registered, must also develop or adopt requirements to ensure the continuing airworthiness of the aircraft. When a State of Design issues an AD, CASA, acting on behalf of the Australian Government, is mandated to assess the information and, if deemed appropriate, issue an Australian AD to enforce the requirements of the State of Design. This process ensures that all aircraft operating within Australian jurisdiction meet the necessary safety standards. In the case of the AD/CESSNA 170/21, which affected Cessna 172 aircraft, CASA issued an AD that has now been cancelled. This cancellation was due to the unsafe condition identified in the original AD no longer being present. As this AD cancellation is a result of Australia's obligations under the Convention on International Civil Aviation, no consultation with the Australian public was required, and a Regulatory Impact Statement was deemed unnecessary by the Office of Best Practice Regulation. The cancellation of the AD took effect on 14 February 2008, and no replacement AD is necessary as the unsafe condition has been resolved. The AD was made by the Acting Manager, Systems and New Technologies in the Airworthiness Engineering Branch, on behalf of CASA, in accordance with subsection 84A(2) of the Act. The implications of breaching the provisions of the Civil Aviation Act 1988 and the Civil Aviation Safety Regulations 1998 can be severe. Non-compliance with ADs can lead to serious safety issues, potentially resulting in aircraft being grounded or banned from flying. The maximum penalties for such breaches can include substantial fines and, in some cases, imprisonment. Additionally, any individual or organisation found in violation of these regulations may face civil liabilities, including compensation for any damages or losses incurred due to non-compliance. The stringent nature of these regulations underscores the importance of adhering to airworthiness directives to maintain the highest safety standards in civil aviation.