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/CESSNA 310/31 affecting Cessna T310 aircraft. CASA has assessed this AD and as a result has cancelled Australian AD/CESSNA 310/31. The cancellation will become effective on 8 May 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 Acting 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, enacted by the Commonwealth Parliament, serves to regulate and ensure the safety of air navigation within Australia. In accordance with section 98 of the Act, the Governor-General is empowered to make regulations, including the issuing of airworthiness directives (ADs) under regulation 39.001 of the Civil Aviation Safety Regulations 1998, which are aimed at maintaining the safety standards of aircraft and aeronautical products. This legislative framework is designed to fulfil Australia’s obligations under international conventions such as Annex 8 to the Convention on International Civil Aviation, where the State of Design holds responsibility for the continuing airworthiness of aircraft types, and the State of Registry is tasked with ensuring the airworthiness of individual aircraft registered within its territory. The Civil Aviation Safety Authority (CASA) acts as Australia’s national airworthiness authority, assessing and issuing ADs as necessary to align with international standards and mitigate safety risks.
Scope and Application
The Civil Aviation Act 1988 applies broadly to various entities and persons involved in civil aviation, including aircraft operators, pilots, and maintenance personnel, as well as to the entities responsible for the manufacture, maintenance, and certification of aircraft. The Act covers the safety and airworthiness of aircraft operating within Australian airspace, thereby extending its jurisdictional reach to all aircraft registered in Australia, regardless of the location of their operation. Under the Civil Aviation Safety Regulations 1998, the Civil Aviation Safety Authority (CASA) is empowered to issue airworthiness directives (ADs) to ensure compliance with safety standards. These directives apply to specific kinds of aircraft or aeronautical products and are legally binding on the entities and individuals subject to them. Subregulation 39.001(5) of the Civil Aviation Safety Regulations 1998 designates ADs as disallowable instruments, meaning they are subject to parliamentary scrutiny and approval. Additionally, ADs issued by CASA are legislative instruments under the Legislative Instruments Act 2003. The ADs are issued in line with international obligations under Annex 8 to the Convention on International Civil Aviation, which places the responsibility for continuing airworthiness on the State of Design and the State of Registry. In this context, CASA acts as Australia’s national airworthiness authority, assessing international ADs and issuing corresponding Australian ADs as necessary to ensure compliance and safety.
Key Provisions
The Civil Aviation Act 1988, under section 98, empowers the Governor-General to make regulations aimed at ensuring the safety of air navigation. Regulation 39.001 of the Civil Aviation Safety Regulations 1998 grants the Civil Aviation Safety Authority (CASA) the authority to issue airworthiness directives (ADs) for specific types of aircraft or aeronautical products. An AD, as outlined in subregulation 39.001(5), is considered a disallowable instrument under section 46A of the Acts Interpretation Act 1901 and is classified as a legislative instrument according to section 6 of the Legislative Instruments Act 2003. These directives play a crucial role in maintaining the continuing airworthiness of aircraft, as mandated by Annex 8 of the Convention on International Civil Aviation. The State of Design, responsible for the aircraft type, must provide necessary information to ensure airworthiness, while the State of Registry is tasked with developing or adopting requirements to maintain the continuing airworthiness of individual aircraft.
The obligations imposed by these regulations primarily rest on CASA, as Australia’s national airworthiness authority. When a State of Design issues an AD for a type of aircraft registered in Australia, CASA is required to assess the information and, if necessary, issue a corresponding Australian AD. This ensures that the requirements set by the State of Design are implemented within Australia. This process was exemplified when CASA assessed and subsequently cancelled Australian AD/CESSNA 310/31 for Cessna T310 aircraft, effective from 8 May 2008, due to the unsafe condition no longer existing. This cancellation aligns with Australia’s obligations under the Convention on International Civil Aviation, and as such, no consultation with the Australian public was required. Additionally, the Office of Best Practice Regulation has determined that ADs do not necessitate a Regulatory Impact Statement.
The Civil Aviation Act 1988 and the Civil Aviation Safety Regulations 1998 impose clear obligations on CASA and other entities involved in the issuance and enforcement of ADs. These obligations ensure that all stakeholders, including aircraft manufacturers, operators, and regulatory authorities, adhere to the highest safety standards. CASA’s role includes assessing ADs issued by the State of Design, issuing Australian ADs where necessary, and ensuring compliance with these directives. Failure to comply with an AD can lead to serious consequences, including the potential grounding of aircraft, which can significantly impact air travel safety and operational efficiency. Furthermore, the cancellation of an AD, as seen in the case of AD/CESSNA 310/31, highlights the importance of ongoing assessment and the responsiveness of regulatory frameworks to emerging safety issues. The regulatory process ensures that the public is protected from unsafe conditions while maintaining the integrity of the aviation system.