CIVIL AVIATION ACT 1988
CIVIL AVIATION SAFETY REGULATIONS 1998
ISSUE OF AIRWORTHINESS DIRECTIVE
Under section 98 of the Civil Aviation Act 1988, the Governor-General may make regulations for the purposes of the Act and in the interests of the safety of air navigation. Under regulation 39.001 of the Civil Aviation Safety Regulations 1998, CASA may issue airworthiness directives (ADs) for kinds of aircraft or aeronautical products. Subregulation 39.001(5) of the Civil Aviation Safety Regulations 1998 provides that an AD is a disallowable instrument for the purposes of section 46A of the Acts Interpretation Act 1901. Therefore, in accordance with section 6 of the Legislative Instruments Act 2003, an AD is a legislative instrument.
Under Annex 8 to the Convention on International Civil Aviation, the State of Design has overall responsibility for continuing airworthiness of an aircraft type, and must provide any information necessary to ensure the continuing airworthiness of a type to appropriate States of Registry. ADs (and their equivalents) are the most common form of continuing airworthiness information, and are issued by most ICAO Contracting States.
The State of Registry of an individual aircraft is responsible for its continuing airworthiness. Under Annex 8, the State of Registry must develop or adopt requirements to ensure the continuing airworthiness of aircraft. When a State of Design issues an AD against a type of aircraft on the Australian Register, CASA, as Australia’s national airworthiness authority, must assess that information and, if appropriate, issue an Australian AD to mandate the requirements of the State of Design.
The Civil Aviation Safety Authority or its predecessors issued AD/AC/43 affecting Twin Aero Commander 500S and 500U aircraft models. CASA has assessed this AD and as a result has cancelled Australian AD/AC/43. The cancellation will become effective on 31 July 2008. No replacement AD is required, as the unsafe condition no longer exists.
As this AD has been cancelled because of Australia’s obligations under the Convention on International Civil Aviation, no consultation with the Australian public has taken place on this AD cancellation. The Office of Best Practice Regulation has determined that ADs do not require a Regulatory Impact Statement.
The AD has been made by the, Manager, Airframe and Structures, in the Airworthiness Engineering Branch, on behalf of CASA, in accordance with subsection 84A (2) of the Act.
Overview
The Civil Aviation Act 1988 was enacted to ensure the safety of air navigation in Australia, providing a legislative framework for civil aviation. The Act authorises the Governor-General to make regulations for the purposes of the Act, specifically under section 98, to ensure air safety. One such regulation, 39.001 of the Civil Aviation Safety Regulations 1998, empowers the Civil Aviation Safety Authority (CASA) to issue airworthiness directives (ADs) for particular kinds of aircraft or aeronautical products. These ADs, which serve as a critical component of continuing airworthiness information, are considered legislative instruments under the Legislative Instruments Act 2003. CASA, acting as Australia's national airworthiness authority, is responsible for assessing and issuing such directives when necessary, particularly when they are issued by the State of Design as per Annex 8 to the Convention on International Civil Aviation. The ADs ensure that Australian aircraft meet international safety standards and are a direct response to the need for a cohesive regulatory approach to airworthiness across different states and international borders.
Scope and Application
The Civil Aviation Act 1988, complemented by the Civil Aviation Safety Regulations 1998, governs the issuance of airworthiness directives (ADs) within Australia, as per section 98 and regulation 39.001. These ADs are legislative instruments that pertain to the continuing airworthiness of specific types of aircraft and aeronautical products, and they are issued by the Civil Aviation Safety Authority (CASA) to ensure compliance with safety standards. ADs are mandated by the State of Design under Annex 8 to the Convention on International Civil Aviation and are recognised as a standard practice among ICAO Contracting States. The ADs apply to entities such as aircraft manufacturers and operators who must adhere to the directives issued by CASA to maintain the airworthiness of their aircraft. The geographic reach of these regulations is national, as CASA acts as Australia’s national airworthiness authority, ensuring that all aircraft registered in Australia comply with the required safety standards. There are no stated exclusions or exemptions, and the application of these regulations is extensive, extending to any aircraft types registered in Australia that are subject to ADs. The regulations can also be extended or restricted through subordinate instruments as necessary.
Key Provisions
The Civil Aviation Act 1988 and the Civil Aviation Safety Regulations 1998 provide the legislative framework for the issuance of airworthiness directives (ADs) in Australia. Section 98 of the Civil Aviation Act 1988 empowers the Governor-General to make regulations for the safety of air navigation. Regulation 39.001 of the Civil Aviation Safety Regulations 1998 specifically allows the Civil Aviation Safety Authority (CASA) to issue ADs for certain types of aircraft or aeronautical products. These ADs are legislative instruments, as outlined in section 6 of the Legislative Instruments Act 2003 and section 46A of the Acts Interpretation Act 1901. Furthermore, under subregulation 39.001(5) of the Civil Aviation Safety Regulations 1998, ADs are considered disallowable instruments. The issuance of ADs is guided by Annex 8 to the Convention on International Civil Aviation, which mandates that the State of Design, which is responsible for the type design of the aircraft, must provide the necessary information to ensure the continuing airworthiness of that type. The State of Registry, which in Australia is CASA, must then develop or adopt requirements to ensure the continuing airworthiness of the aircraft registered within its jurisdiction. When an AD is issued by the State of Design, CASA must assess the information and, if necessary, issue an Australian AD to enforce the requirements.
Under the Civil Aviation Safety Regulations 1998, CASA has the obligation to monitor and respond to ADs issued by the States of Design for aircraft types registered in Australia. This includes assessing the information provided and determining whether an Australian AD is necessary to ensure the safety and airworthiness of the aircraft. In the case of the Twin Aero Commander 500S and 500U aircraft models, CASA issued AD/AC/43, which has now been cancelled. The cancellation of this AD was due to Australia’s obligations under the Convention on International Civil Aviation and the fact that the unsafe condition no longer exists. Consequently, no replacement AD is required. This cancellation was made by the Manager, Airframe and Structures, in the Airworthiness Engineering Branch, on behalf of CASA, in accordance with subsection 84A(2) of the Civil Aviation Act 1988.
Failure to comply with ADs can result in serious safety implications and legal consequences. Under the Civil Aviation Act 1988, operators of aircraft must comply with ADs and ensure that their aircraft meet the specified airworthiness standards. Failure to comply with an AD can result in enforcement actions by CASA, including the potential for grounding of the aircraft, suspension of the operator’s licence, or other regulatory penalties. In terms of civil liability, non-compliance with an AD can be grounds for a claim if an accident or incident occurs as a result of the non-compliance. Criminal penalties may also apply, particularly if the non-compliance leads to an accident that results in death or serious injury. The severity of the penalties can vary, but they may include substantial fines and imprisonment, depending on the circumstances and the specific provisions of the Act.