AD/RAD/43 Amdt 6 - ATC Transponder Systems with Active Mode C

Overview

The Civil Aviation Act 1988 was enacted to provide a legislative framework for the regulation of civil aviation in Australia, with a focus on safety and efficiency. This Act empowers the Governor-General to make regulations for air navigation safety, and under regulation 39.001 of the Civil Aviation Safety Regulations 1998, the Civil Aviation Safety Authority (CASA) is authorised to issue airworthiness directives (ADs) for aircraft types and aeronautical products. These directives are legislative instruments under the Legislative Instruments Act 2003 and are intended to ensure the continuing airworthiness of aircraft, in line with the responsibilities outlined in Annex 8 of the Convention on International Civil Aviation. The Civil Aviation Safety Regulations 1998, specifically subregulation 39.001(5), mandate that ADs are subject to disallowance under the Acts Interpretation Act 1901. CASA, as Australia's national airworthiness authority, assesses information from the State of Design and issues Australian ADs when necessary, ensuring compliance with international standards and obligations. The issuance of AD/RAD/43 Amendment 6, aligning with United States Federal Aviation Administration regulations, exemplifies this process, aiming to provide relief from repetitive inspections for aircraft not operating under the instrument flight rules.

Scope and Application

The Civil Aviation Act 1988, supported by the Civil Aviation Safety Regulations 1998, mandates the issuance of airworthiness directives (ADs) by the Civil Aviation Safety Authority (CASA) to ensure the safety of air navigation. These directives apply to all aircraft and aeronautical products, establishing mandatory requirements to maintain their airworthiness. As legislative instruments, ADs are subject to disallowance under the Acts Interpretation Act 1901 and are overseen by the Legislative Instruments Act 2003. The application of these directives is rooted in Australia's commitments under the Convention on International Civil Aviation, particularly through Annex 8, which delineates the roles of States of Design and Registry in maintaining the continuing airworthiness of aircraft. CASA, acting as Australia's national airworthiness authority, must issue ADs that align with international standards, as exemplified by the amendment of AD/RAD/43 to conform with United States Federal Aviation Administration regulations. These amendments, such as AD/RAD/43 Amendment 6, become effective on specified dates and supersede previous directives. Given the international nature of these obligations and the technical nature of the amendments, CASA has determined that further public consultation is not necessary, and the Office of Regulatory Review has concluded that a Regulatory Impact Statement is not required. The ADs are issued by CASA in accordance with the Civil Aviation Act 1988, reflecting the authority's role in ensuring compliance with international aviation safety standards.

Key Provisions

The Civil Aviation Act 1988 and the Civil Aviation Safety Regulations 1998 are integral to maintaining the safety standards of aviation within Australia. Section 98 of the Civil Aviation Act 1988 empowers the Governor-General to create regulations aimed at ensuring the safety of air navigation, while regulation 39.001 of the Civil Aviation Safety Regulations 1998 allows the Civil Aviation Safety Authority (CASA) to issue airworthiness directives (ADs) for specific types of aircraft or aeronautical products. These ADs, as outlined in subregulation 39.001(5), are considered disallowable instruments under section 46A of the Acts Interpretation Act 1901 and are thus legislative instruments as per section 6 of the Legislative Instruments Act 2003. These airworthiness directives play a crucial role in ensuring that aircraft remain airworthy throughout their operational lives. The State of Design holds the primary responsibility for the continuing airworthiness of an aircraft type, as stipulated in Annex 8 to the Convention on International Civil Aviation. This responsibility includes providing necessary information to the States of Registry, which must then develop or adopt requirements to ensure the ongoing airworthiness of the aircraft registered within their jurisdiction. In practice, when a State of Design issues an AD for a type of aircraft registered in Australia, CASA, as the national airworthiness authority, is required to review this information and, if necessary, issue an Australian AD to enforce the State of Design’s requirements. The AD/RAD/43 Amendment 5, issued by CASA in 1996, originally affected all Air Traffic Control Transponders. In response to industry requests, CASA has amended this AD to align it with the United States Federal Aviation Administration (FAA) regulations. The updated AD, AD/RAD/43 Amendment 6, is set to become effective on 27 October 2005, replacing the previous version entirely. This amendment was issued in compliance with Australia’s obligations under the Convention on International Civil Aviation and to avoid repetitive inspections for aircraft not operating under the instrument flight rules, thus no further public consultation was deemed necessary. Additionally, the Office of Regulatory Review has concluded that ADs do not require a Regulatory Impact Statement. The AD was made by the Manager, New Technologies and Systems, in the Manufacturing, Certification and New Technologies Office, on behalf of CASA, in accordance with subsection 84A(2) of the Act. The ADs carry significant weight and, in the event of non-compliance, they can lead to severe consequences. Although the specific penalties for breaching ADs are not detailed in the provided text, it is understood that failure to adhere to these directives can result in severe civil or criminal penalties. The nature and extent of these penalties would typically be determined by the severity of the breach and the potential impact on aviation safety. CASA enforces these directives rigorously to uphold the high standards of safety required in the aviation industry.