AD/AS 355/84 - Stabilisers - Upper and Lower Vertical Fin Spars

Overview

The Civil Aviation Act 1988, enacted by the Australian Parliament, serves as the foundational legislation for regulating civil aviation within Australia. It establishes the framework for ensuring the safety and efficiency of air navigation. One significant aspect of this Act is the issuance of airworthiness directives (ADs), which are regulatory instruments mandated by regulation 39.001 of the Civil Aviation Safety Regulations 1998. The Civil Aviation Safety Authority (CASA) is empowered to issue these ADs for specific types of aircraft or aeronautical products to ensure compliance with safety standards. The Act allows the Governor-General to make regulations for the safety of air navigation, thus enabling CASA to mandate specific requirements to maintain the continuing airworthiness of aircraft registered in Australia. This legislative approach aligns with Australia’s obligations under the Convention on International Civil Aviation, particularly Annex 8, which designates the State of Design as having overarching responsibility for the continuing airworthiness of aircraft types. CASA’s role as Australia's national airworthiness authority involves assessing information from the State of Design and, if necessary, issuing corresponding Australian ADs to enforce the safety measures mandated by the State of Design.

Scope and Application

The Civil Aviation Act 1988 and the associated Civil Aviation Regulations 1998 provide the legislative framework for airworthiness directives, which are essential for ensuring the safety of air navigation and the continuing airworthiness of aircraft. Under section 98 of the Act, the Governor-General has the authority to make regulations in the interests of air navigation safety, and regulation 39.001 of the Civil Aviation Safety Regulations 1998 specifically empowers the Civil Aviation Safety Authority (CASA) to issue airworthiness directives for certain types of aircraft or aeronautical products. These directives are formal regulatory instruments, subject to disallowance under section 46A of the Acts Interpretation Act 1901. The issuing of these directives is mandated by Australia's commitments under Annex 8 of the Convention on International Civil Aviation, which assigns responsibility for continuing airworthiness to the State of Design, who must provide necessary information to States of Registry. In Australia, CASA, as the national airworthiness authority, must assess information from the State of Design and, if appropriate, issue corresponding Australian airworthiness directives. These directives apply to aircraft registered in Australia and are intended to align with international standards and obligations. Notably, these directives are issued without public consultation, as they respond to international commitments and directives from the relevant State of Design. Furthermore, the Office of Regulatory Review has concluded that such directives do not require a Regulatory Impact Statement.

Key Provisions

The Civil Aviation Act 1988 and Civil Aviation Regulations 1998 contain provisions that govern the issuance of airworthiness directives (ADs). Section 98 of the Act authorises the Governor-General to make regulations for the safety of air navigation, while regulation 39.001 of the Civil Aviation Safety Regulations 1998 specifically allows the Civil Aviation Safety Authority (CASA) to issue ADs for types of aircraft or aeronautical products. This regulatory framework is aligned with Annex 8 to the Convention on International Civil Aviation, which mandates that the State of Design is responsible for the continuing airworthiness of an aircraft type, and must share necessary information to ensure the continuing airworthiness of a type with appropriate States of Registry. Consequently, the State of Registry of an individual aircraft must also develop or adopt requirements to ensure the continuing airworthiness of aircraft within its jurisdiction. The obligations imposed by this legislation require CASA, as Australia’s national airworthiness authority, to assess information provided by the State of Design and, if necessary, issue an Australian AD to mandate the requirements of the State of Design. For instance, when the French DGAC issued AD UF-2005-006 affecting certain Eurocopter models, CASA assessed this directive and subsequently issued Australian AD/AS 355/84, which became effective on 12 January 2005. Given that this AD was issued in response to an international directive and is in line with Australia’s obligations under the Convention on International Civil Aviation, no consultation with the Australian public was required. Additionally, the Office of Regulatory Review has determined that ADs do not necessitate a Regulatory Impact Statement. The legislation also includes provisions for potential breaches and consequences. Although specific penalties are not detailed in the provided text, breaches of ADs generally carry significant consequences under the Civil Aviation Act 1988. Non-compliance with an AD can result in severe civil or criminal penalties, including fines and imprisonment, as well as potential grounding of the aircraft. The exact penalties would depend on the nature and severity of the breach, as outlined in other sections of the Act and relevant regulations. The issuing authority, CASA, has the power to enforce compliance through various means, including inspections, audits, and legal action against individuals or entities that fail to adhere to the mandated airworthiness requirements.