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/46 affecting Twin Aero Commander 500B, 500U and 500S aircraft models. CASA has assessed this AD and as a result has cancelled Australian AD/AC/46. 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, Systems and New Technologies, 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 address the need for comprehensive regulations governing civil aviation safety in Australia. The Act empowers the Governor-General to establish regulations that prioritise the safety of air navigation, with a particular focus on ensuring the continuing airworthiness of aircraft. Under the Civil Aviation Safety Regulations 1998, the Civil Aviation Safety Authority (CASA) has the authority to issue airworthiness directives (ADs) for specific types of aircraft or aeronautical products. These directives are considered legislative instruments, subject to disallowance under the Acts Interpretation Act 1901. The policy objective of the Act is to align Australian civil aviation safety standards with international conventions, particularly Annex 8 to the Convention on International Civil Aviation, which mandates the State of Design to maintain the airworthiness of aircraft types and provide necessary information to States of Registry, such as Australia.
The Civil Aviation Safety Regulations 1998 further delineate the responsibilities of the State of Registry, requiring it to develop or adopt measures ensuring the continuing airworthiness of aircraft. When a State of Design issues an AD, CASA must evaluate the information and, if appropriate, issue an Australian AD to enforce the State of Design's requirements. In the case of Twin Aero Commander 500B, 500U, and 500S aircraft models, CASA assessed and subsequently cancelled Australian AD/AC/46 due to the elimination of the unsafe condition, making a replacement AD unnecessary. This cancellation aligns with Australia’s obligations under the Convention on International Civil Aviation and has been carried out by CASA without public consultation, as deemed appropriate by the Office of Best Practice Regulation.
Scope and Application
The Civil Aviation Act 1988 and the associated Civil Aviation Safety Regulations 1998 together provide the legislative framework for the regulation of civil aviation safety in Australia. Specifically, regulation 39.001 of the Civil Aviation Safety Regulations 1998 empowers the Civil Aviation Safety Authority (CASA) to issue airworthiness directives (ADs) for certain types of aircraft and aeronautical products. These ADs are legislative instruments and are issued to ensure compliance with safety standards. The authority for issuing these directives is derived from section 98 of the Civil Aviation Act 1988, which allows the Governor-General to make regulations in the interest of air navigation safety. ADs are a standard practice among ICAO Contracting States and are critical for maintaining the continuing airworthiness of aircraft types. The State of Registry, in this case, CASA, is responsible for ensuring these directives are appropriately implemented in Australia. The scope of this legislation applies to all aircraft registered in Australia, and its jurisdictional reach extends nationally, adhering to international obligations under the Convention on International Civil Aviation.
Key Provisions
The Civil Aviation Act 1988 and the Civil Aviation Safety Regulations 1998 establish the framework for the issuance of airworthiness directives (ADs) in Australia. According to section 98 of the Act, the Governor-General can make regulations to ensure the safety of air navigation. Regulation 39.001 of the Civil Aviation Safety Regulations 1998 empowers the Civil Aviation Safety Authority (CASA) to issue ADs for specific types of aircraft or aeronautical products. These ADs are legislative instruments and can be disallowed under section 46A of the Acts Interpretation Act 1901. The State of Design has the primary responsibility for ensuring the continuing airworthiness of an aircraft type and must provide necessary information to the State of Registry, which in Australia is CASA. CASA must then assess this information and, if appropriate, issue an Australian AD to enforce the requirements of the State of Design.
The obligations under this legislation require CASA to closely monitor the safety directives issued by the State of Design and to assess their applicability to aircraft registered in Australia. CASA must ensure that these ADs meet the safety standards outlined in Annex 8 to the Convention on International Civil Aviation. When CASA issues an Australian AD, it must clearly specify the requirements that need to be met by the aircraft operators and owners. Failure to comply with these directives can result in the aircraft being deemed unairworthy, which could lead to grounding and potential legal consequences for the operators.
Breaches of the provisions outlined in the Civil Aviation Act 1988 and the Civil Aviation Safety Regulations 1998 can lead to various civil and criminal consequences. Non-compliance with ADs can result in fines and penalties, as stipulated by the regulations. Additionally, operating an aircraft that does not comply with an AD can be considered a breach of airworthiness regulations, potentially leading to more severe penalties including imprisonment. The specific penalties can vary depending on the nature and severity of the breach, but they are intended to enforce strict adherence to safety standards to ensure the safety of air navigation.