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/MU-2/38 affecting Mitsubishi MU-2 aircraft. CASA has assessed this AD and as a result has cancelled AD/MU-2/38. The cancellation will become effective on 2 July 2009. 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 Group, 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 to ensure the safety of air navigation. This Act empowers the Governor-General to make regulations for the purposes of the Act, with a primary focus on maintaining the safety of air navigation. Under this legislative framework, the Civil Aviation Safety Regulations 1998 were established, which, among other things, allow the Civil Aviation Safety Authority (CASA) to issue airworthiness directives (ADs) for particular kinds of aircraft or aeronautical products. These directives are legislative instruments, as stipulated by the Legislative Instruments Act 2003. CASA issues these directives to mandate the continuing airworthiness of aircraft registered in Australia, in accordance with international standards set by the Convention on International Civil Aviation. In a specific instance, CASA issued and subsequently cancelled AD/MU-2/38 concerning Mitsubishi MU-2 aircraft, effective from 2 July 2009, as the unsafe condition it targeted no longer existed. This cancellation was executed in line with Australia's obligations under the Convention and without public consultation, as deemed appropriate by the Office of Best Practice Regulation.
Scope and Application
The Civil Aviation Act 1988, supplemented by the Civil Aviation Safety Regulations 1998, provides the legal framework for ensuring the safety of air navigation in Australia. Under this Act, the Civil Aviation Safety Authority (CASA) is authorised to issue airworthiness directives (ADs) for specific types of aircraft or aeronautical products to ensure these meet safety standards. These directives are legislative instruments and are integral to maintaining the continuing airworthiness of aircraft as mandated by international conventions, particularly Annex 8 to the Convention on International Civil Aviation. The State of Registry, which in this case is Australia, is responsible for ensuring the airworthiness of aircraft registered within its jurisdiction, and CASA acts on behalf of this state by assessing and implementing ADs issued by the State of Design. The AD/MU-2/38, initially issued for Mitsubishi MU-2 aircraft, was subsequently cancelled by CASA due to the resolution of the unsafe condition it was addressing, reflecting Australia’s commitment to international safety standards. This cancellation, being a technical update based on international obligations, did not require public consultation or a Regulatory Impact Statement.
Key Provisions
The Civil Aviation Act 1988, supplemented by the Civil Aviation Safety Regulations 1998, provides the framework for ensuring the safety of air navigation and the airworthiness of aircraft. Under section 98 of the Civil Aviation Act 1988, the Governor-General has the authority to make regulations to achieve these objectives. Regulation 39.001 specifically empowers the Civil Aviation Safety Authority (CASA) to issue airworthiness directives (ADs) for particular kinds of aircraft or aeronautical products. This regulatory mechanism is critical in maintaining safety standards and ensuring that all aircraft meet the necessary airworthiness criteria.
The obligations imposed by these regulations on parties and entities are substantial. The State of Design, which is responsible for the continuing airworthiness of an aircraft type, must provide necessary information to States of Registry to ensure that aircraft remain airworthy. The State of Registry, in turn, is tasked with developing or adopting requirements to maintain the airworthiness of individual aircraft registered within its jurisdiction. For example, when CASA, as Australia's national airworthiness authority, receives an AD from the State of Design, it must assess this information and, if appropriate, issue an Australian AD to enforce the necessary safety measures. This collaborative approach ensures that safety directives are effectively implemented across different jurisdictions.
The legislation also outlines consequences for non-compliance. While the specific offences and penalties are not detailed in the provided text, it is understood that breaches of airworthiness regulations can lead to significant civil or criminal consequences. In the case of the Mitsubishi MU-2 aircraft, AD/MU-2/38 was issued and subsequently cancelled by CASA. This cancellation was due to Australia's obligations under the Convention on International Civil Aviation and the resolution of the unsafe condition. The process of issuing and cancelling ADs is conducted without public consultation and does not require a Regulatory Impact Statement, as determined by the Office of Best Practice Regulation. This streamlined process ensures that airworthiness directives can be issued and modified efficiently to respond to emerging safety issues.
Overall, the provisions of the Civil Aviation Act 1988 and the Civil Aviation Safety Regulations 1998 establish a robust framework for ensuring the safety of air navigation and the continuing airworthiness of aircraft. The authority granted to CASA to issue and manage ADs is a key tool in maintaining high safety standards and ensuring compliance with international aviation safety protocols.