AD/AC/45 - Nose Wheel Tyre - Inspection and Replacement - CANCELLED

Overview

The Civil Aviation Act 1988 was enacted to provide a comprehensive legal framework for civil aviation in Australia, addressing various aspects of safety, regulation, and the operation of aircraft within Australian airspace. One of its key provisions allows the Governor-General to make regulations for the safety of air navigation, including the issuance of airworthiness directives (ADs). The Civil Aviation Safety Regulations 1998 further elaborate on the procedures for issuing ADs, which are legislative instruments under the Acts Interpretation Act 1901 and the Legislative Instruments Act 2003. These directives are critical for ensuring the continuing airworthiness of aircraft, as mandated by international standards set forth in Annex 8 to the Convention on International Civil Aviation. The Civil Aviation Safety Authority (CASA) is responsible for issuing ADs in Australia, in line with the requirements set by the State of Design and the State of Registry. In the case of Aero Commander model aircraft, CASA issued an airworthiness directive in 1971, which has now been cancelled as the original unsafe condition no longer exists, thereby reducing the regulatory burden.

Scope and Application

The Civil Aviation Safety Regulations 1998, under the Civil Aviation Act 1988, empower the Civil Aviation Safety Authority (CASA) to issue airworthiness directives (ADs) concerning specific types of aircraft or aeronautical products, with the primary aim of ensuring the safety of air navigation. These directives are legal instruments, subject to disallowance under the Acts Interpretation Act 1901, and are aligned with international standards set by the International Civil Aviation Organization (ICAO). The State of Design is responsible for the continuing airworthiness of an aircraft type, while the State of Registry must ensure the airworthiness of individual aircraft. Consequently, CASA, as Australia's national airworthiness authority, assesses information from the State of Design and issues Australian ADs as necessary. The Civil Aviation Safety Regulations 1998 also provide that ADs do not require a Regulatory Impact Statement and no public consultation is mandated when an AD is cancelled, as is the case with AD/AC/45, which pertains to Aero Commander model aircraft and will be cancelled effective 13 March 2008. This cancellation is due to the original unsafe condition no longer existing, and no replacement AD is required.

Key Provisions

The Civil Aviation Act 1988 and the Civil Aviation Safety Regulations 1998 provide the legislative framework within which the Civil Aviation Safety Authority (CASA) can issue airworthiness directives (ADs) as part of its mandate to ensure the safety of air navigation. Under section 98 of the Civil Aviation Act 1988, the Governor-General has the authority to make regulations for the purposes of the Act, and regulation 39.001 of the Civil Aviation Safety Regulations 1998 empowers CASA to issue ADs for kinds of aircraft or aeronautical products. These directives are significant legislative instruments, as indicated by subregulation 39.001(5) of the Civil Aviation Safety Regulations 1998, which aligns with section 46A of the Acts Interpretation Act 1901, making them disallowable instruments. Furthermore, under section 6 of the Legislative Instruments Act 2003, ADs are recognised as legislative instruments. The obligations imposed by the Civil Aviation Act 1988 and the Civil Aviation Safety Regulations 1998 on the State of Design and the State of Registry are pivotal to maintaining the continuing airworthiness of aircraft. The State of Design, as outlined in Annex 8 to the Convention on International Civil Aviation, has the overarching responsibility for the continuing airworthiness of an aircraft type and must provide necessary information to ensure the continuing airworthiness of a type to the appropriate States of Registry. Conversely, the State of Registry is tasked with developing or adopting requirements to ensure the continuing airworthiness of aircraft. When CASA, acting as Australia’s national airworthiness authority, receives an AD from a State of Design concerning an aircraft on the Australian Register, it is required to assess the information and, if deemed appropriate, issue an Australian AD to mandate the requirements of the State of Design. The Civil Aviation Act 1988 and the Civil Aviation Safety Regulations 1998 also delineate the consequences of failing to comply with airworthiness directives. Non-compliance with ADs can lead to significant safety risks, and while the Civil Aviation Act 1988 and the Civil Aviation Safety Regulations 1998 do not explicitly detail specific penalties for non-compliance with ADs, the overarching legislative framework implies that such non-compliance could result in civil or criminal consequences. These may include fines, imprisonment, or other regulatory actions as prescribed under the broader legislative provisions governing civil aviation safety. The specific penalties are generally determined by other relevant legislation and regulatory guidelines, which might encompass the Aeronautics Act 1986 and other subsidiary regulations. The Civil Aviation Safety Regulations 1998 also provide the process for issuing and cancelling ADs. For instance, CASA issued AD/AC/45 in 1971, affecting Aero Commander model aircraft. However, after reviewing this directive, CASA decided to cancel it, effective from 13 March 2008. This cancellation was based on the determination that the original unsafe condition no longer existed, thus no replacement AD was required. Importantly, no consultation with the Australian public was necessary because the cancellation resulted in a reduction of the regulatory burden, and the Office of Best Practice Regulation has determined that ADs do not require a Regulatory Impact Statement. The AD was made by the Manager, Airframes in the Airworthiness Engineering Branch, on behalf of CASA, in accordance with subsection 84A(2) of the Act.