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 336/4 affecting Cessna 336 aircraft. CASA has assessed this AD and as a result has cancelled Australian AD/CESSNA 336/4. 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 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 regulate civil aviation in Australia and ensure the safety of air navigation. Under section 98 of the Act, the Governor-General has the authority to make regulations in the interests of safety, with the Civil Aviation Safety Regulations 1998 providing specific mechanisms such as the issuance of airworthiness directives (ADs) under regulation 39.001. These ADs are legislative instruments that align with international standards, particularly those outlined in Annex 8 to the Convention on International Civil Aviation, which places the responsibility for continuing airworthiness on the State of Design. In Australia, CASA, as the national airworthiness authority, assesses information from the State of Design and issues corresponding ADs to ensure compliance with safety standards. Recently, CASA cancelled Australian AD/CESSNA 336/4 due to the resolution of the unsafe condition identified in the original directive, which was made in accordance with the Act and without public consultation as it was deemed unnecessary under the Office of Best Practice Regulation’s guidelines.
Scope and Application
The Civil Aviation Act 1988, through the Civil Aviation Safety Regulations 1998, empowers the Civil Aviation Safety Authority (CASA) to issue airworthiness directives (ADs) for specific kinds of aircraft or aeronautical products, thereby ensuring the continuing airworthiness of aircraft in Australia. The authority to issue these ADs stems from section 98 of the Act, with regulation 39.001 specifically detailing the process. An AD, as outlined in subregulation 39.001(5), is considered a disallowable instrument under section 46A of the Acts Interpretation Act 1901, and therefore constitutes a legislative instrument. This legislative framework is designed to comply with Annex 8 of the Convention on International Civil Aviation, which assigns the State of Design with the primary responsibility for the continuing airworthiness of an aircraft type, while the State of Registry is tasked with ensuring the airworthiness of individual aircraft. CASA, as Australia's national airworthiness authority, assesses and, if necessary, issues Australian ADs in response to directives from the State of Design to mandate required safety measures. The specific example of AD/CESSNA 336/4, affecting Cessna 336 aircraft, was assessed by CASA and subsequently cancelled due to the resolution of the unsafe condition it addressed, effective from 8 May 2008. Given that this cancellation aligns with Australia's international obligations, no public consultation was required, and the Office of Best Practice Regulation determined that no Regulatory Impact Statement was necessary.
Key Provisions
The Civil Aviation Act 1988 and the Civil Aviation Safety Regulations 1998 lay out the framework for the issuance and enforcement of airworthiness directives (ADs). 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 specifically allows the Civil Aviation Safety Authority (CASA) to issue ADs for particular types of aircraft or aeronautical products. Under subregulation 39.001(5), ADs are considered disallowable instruments, and thus legislative instruments in accordance with section 6 of the Legislative Instruments Act 2003. These ADs serve as a means to communicate necessary information to ensure the continuing airworthiness of aircraft, a responsibility that falls under Annex 8 of the Convention on International Civil Aviation, which assigns the State of Design the overall responsibility for maintaining the airworthiness of an aircraft type.
The obligations imposed by the Civil Aviation Safety Regulations 1998 on the parties involved, particularly CASA, are significant. CASA, as Australia’s national airworthiness authority, must evaluate any ADs issued by the State of Design and decide whether to issue a corresponding Australian AD. This ensures that the safety standards are maintained according to international standards. The State of Registry, which is responsible for the individual aircraft’s continuing airworthiness, must also develop or adopt appropriate requirements to comply with Annex 8. This dual responsibility ensures that both the design and registry states work collaboratively to maintain air safety.
Failure to comply with the requirements set forth in the ADs can lead to severe consequences. Although the specific offences and penalties are not detailed within the text, the overarching theme is that non-compliance with ADs can result in significant civil or criminal liabilities. Such non-compliance could potentially lead to the grounding of aircraft, hefty fines, or other punitive measures designed to enforce adherence to safety regulations. The seriousness of these potential consequences underscores the importance of strict compliance with ADs to ensure the safety and integrity of air navigation.