AD/PREMIER/4 - Stall Warning System Angle-of-Attack Transmitters

Overview

The Civil Aviation Act 1988, enacted by the Australian Parliament, aims to ensure the safety of air navigation and the continuing airworthiness of aircraft. Under this Act, the Governor-General is empowered to make regulations to achieve these objectives. The Civil Aviation Safety Regulations 1998 further delegate authority to the Civil Aviation Safety Authority (CASA) to issue airworthiness directives (ADs) for specific types of aircraft or aeronautical products. These directives are critical for maintaining the safety standards of aircraft and are considered legislative instruments. The policy objective of these regulations is to align with international standards, particularly those set by the International Civil Aviation Organization (ICAO), ensuring that Australian aviation safety practices are consistent with global best practices. In the case of Hawker Beechcraft Corporation 390 model aircraft, CASA issued an Australian AD following an assessment of a corresponding AD from the United States Federal Aviation Administration, reflecting Australia's commitment to international aviation safety protocols.

Scope and Application

The Civil Aviation Act 1988, in conjunction with the Civil Aviation Safety Regulations 1998, provides the legal framework for the regulation of civil aviation safety in Australia. Under section 98 of the Act, the Governor-General can make regulations for the purposes of the Act, ensuring the safety of air navigation, and regulation 39.001 specifically empowers the Civil Aviation Safety Authority (CASA) to issue airworthiness directives for particular kinds of aircraft or aeronautical products. This regulatory mechanism ensures that aircraft and aeronautical products remain airworthy, aligning with international standards and obligations under the Convention on International Civil Aviation. An airworthiness directive issued under these regulations is a disallowable instrument, classified as a legislative instrument under the Legislative Instruments Act 2003. This legislative approach facilitates the continuous airworthiness of aircraft types, with the State of Design bearing the primary responsibility for ensuring such airworthiness, and the State of Registry enforcing these requirements within its jurisdiction. When the United States, as the State of Design, issues an airworthiness directive for a specific aircraft type registered in Australia, CASA must evaluate and, if necessary, issue a corresponding Australian airworthiness directive to enforce the same safety standards domestically. This directive is issued without public consultation, as it aligns with Australia’s international obligations and is a direct response to an airworthiness directive from the relevant State of Design.

Key Provisions

The Civil Aviation Act 1988, particularly section 98, empowers the Governor-General to issue regulations that pertain to the Act, with a primary focus on ensuring the safety of air navigation. One significant regulation, 39.001 of the Civil Aviation Safety Regulations 1998, grants the Civil Aviation Safety Authority (CASA) the authority to issue airworthiness directives (ADs) for specific types of aircraft or aeronautical products. An AD, as outlined in subregulation 39.001(5), is a disallowable instrument under the Acts Interpretation Act 1901, making it a legislative instrument as per section 6 of the Legislative Instruments Act 2003. This means that ADs are formal, legally binding documents issued to ensure that aircraft and aeronautical products maintain their airworthiness. The obligations imposed by the Civil Aviation Safety Regulations 1998 require CASA to act on ADs issued by the State of Design, which is the country responsible for the design of the aircraft. For example, the United States Federal Aviation Administration (FAA) has issued AD 2008-16-02 affecting Hawker Beechcraft Corporation 390 model aircraft. As the State of Design, the United States has issued this AD, and CASA, as the national airworthiness authority for Australia, is obligated to assess this information. If appropriate, CASA must then issue an Australian AD to mandate the requirements specified by the United States. Additionally, the State of Registry, in this case Australia, is responsible for the continuing airworthiness of the aircraft registered within its jurisdiction. Failure to comply with the requirements set out in an AD can lead to significant consequences. Non-compliance with an AD can result in the aircraft being deemed unairworthy, which could lead to enforcement actions by CASA. This might include grounding the aircraft, fines, or other administrative actions. In severe cases, non-compliance could also result in criminal charges under the Civil Aviation Act 1988, with penalties including substantial fines and imprisonment. These measures underscore the importance of adhering to ADs to maintain the safety and airworthiness of aircraft. The process of issuing an AD under the Civil Aviation Safety Regulations 1998 does not typically involve public consultation due to the international obligations stemming from the Convention on International Civil Aviation. The Office of Best Practice Regulation has determined that ADs do not require a Regulatory Impact Statement, streamlining the process to ensure timely responses to safety concerns. The AD is made by the Manager, Systems and New Technologies in the Airworthiness Engineering Group, on behalf of CASA, in accordance with subsection 84A(2) of the Act, ensuring that the directive is issued with the appropriate authority and expertise.