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/ENST 28/11 affecting Enstrom F-28 series helicopters. CASA has assessed this AD and as a result has cancelled Australian AD/ENST 28/11. The cancellation will become effective on 27 August 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, Future Technology and Regulatory Trends, in the Standards Development and Future Technology Division, on behalf of CASA, in accordance with subsection 84A (2) of the Act.
Overview
The Civil Aviation Act 1988 was enacted to provide for the regulation of civil aviation in Australia, with a focus on ensuring the safety of air navigation. The Act empowers the Governor-General to make regulations, such as the Civil Aviation Safety Regulations 1998, which in turn allow the Civil Aviation Safety Authority (CASA) to issue airworthiness directives (ADs) for various kinds of aircraft and aeronautical products. These directives are integral to maintaining the continuing airworthiness of aircraft as stipulated under Annex 8 to the Convention on International Civil Aviation, which designates the State of Design as the entity responsible for the overall airworthiness of an aircraft type. CASA, as Australia’s national airworthiness authority, must assess and, if necessary, issue Australian ADs to ensure compliance with the requirements set by the State of Design. The Civil Aviation Safety Regulations 1998 also outline that ADs are legislative instruments, subject to disallowance under the Acts Interpretation Act 1901, and must be assessed by the Office of Best Practice Regulation to determine if a Regulatory Impact Statement is required.
Scope and Application
The Civil Aviation Act 1988 and the associated Civil Aviation Safety Regulations 1998 provide a framework for ensuring the safety of air navigation in Australia. Under this framework, the Civil Aviation Safety Authority (CASA) has the authority to issue airworthiness directives (ADs) for specific types of aircraft or aeronautical products, as outlined in regulation 39.001 of the Civil Aviation Safety Regulations 1998. These ADs, which are legislative instruments under section 46A of the Acts Interpretation Act 1901 and subject to disallowance, serve as the primary means for maintaining the continuing airworthiness of aircraft as mandated by Annex 8 to the Convention on International Civil Aviation. The State of Design of an aircraft bears the primary responsibility for the type's continuing airworthiness, while the State of Registry, in this case CASA as Australia’s national airworthiness authority, must ensure that the aircraft on the Australian Register meet these standards. The ADs issued by CASA must align with the directives of the State of Design, and when an AD issued by a foreign State of Design pertains to an aircraft registered in Australia, CASA must assess and, if necessary, issue a corresponding Australian AD. The process and authority for issuing and cancelling such directives are integral to Australia's commitment to international civil aviation standards and the safety of its airspace.
Key Provisions
The Civil Aviation Act 1988 (sections 98) and the Civil Aviation Safety Regulations 1998 (section 39.001) empower the Civil Aviation Safety Authority (CASA) to issue airworthiness directives (ADs) that apply to specific types of aircraft or aeronautical products. These ADs serve to maintain the continuing airworthiness of aircraft, aligning with Annex 8 to the Convention on International Civil Aviation, which mandates that the State of Design must provide necessary information to ensure an aircraft type's airworthiness. The State of Registry, in this case, CASA, must then assess this information and, if necessary, issue an Australian AD to enforce the requirements set by the State of Design.
Under these regulations, CASA has the authority to issue, modify, or cancel ADs based on the safety and airworthiness of the aircraft. For instance, CASA has cancelled AD/ENST 28/11 for the Enstrom F-28 series helicopters. This cancellation is effective from 27 August 2009, and no replacement AD is required as the previously identified unsafe condition no longer exists. This action underscores CASA's role in ensuring that Australian aircraft meet international safety standards and comply with the obligations under the Convention on International Civil Aviation.
The process of issuing or cancelling ADs does not require consultation with the Australian public, as determined by the Office of Best Practice Regulation, which has also concluded that ADs do not necessitate a Regulatory Impact Statement. The ADs are legislative instruments under the Legislative Instruments Act 2003 (section 6). The AD/ENST 28/11 cancellation was made by the Manager, Future Technology and Regulatory Trends, within CASA’s Standards Development and Future Technology Division, in accordance with section 84A(2) of the Civil Aviation Act 1988.
Failure to comply with an AD may lead to severe consequences, including potential grounding of aircraft, enforcement actions, and penalties. While specific penalties are not detailed in the provided text, non-compliance with airworthiness directives can result in significant civil or criminal sanctions, reflecting the critical nature of maintaining aircraft safety and airworthiness. CASA’s role in issuing and enforcing these directives is pivotal in ensuring the safety of air navigation and compliance with international aviation standards.