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/5 affecting all Twin Aero Commander aircraft models. CASA has assessed this AD and as a result has cancelled Australian AD/AC/5. 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, enacted by the Australian Parliament, addresses the overarching legal framework for civil aviation in Australia, including the establishment of the Civil Aviation Safety Authority (CASA) and its responsibilities. One of the critical gaps it addresses is the need for a regulatory mechanism to ensure the continuing airworthiness of aircraft and aeronautical products, thereby safeguarding public safety and ensuring compliance with international aviation standards. The Act empowers CASA to issue airworthiness directives (ADs) in accordance with regulation 39.001 of the Civil Aviation Safety Regulations 1998, which mandate specific safety measures for types of aircraft or aeronautical products. These directives are legislative instruments, subject to disallowance under section 46A of the Acts Interpretation Act 1901, and are implemented in line with the responsibilities outlined in Annex 8 to the Convention on International Civil Aviation. The ADs are issued to address unsafe conditions identified by the State of Design and adopted by the State of Registry, with CASA acting as the national airworthiness authority in Australia. The cancellation of an Australian AD, such as AD/AC/5 affecting Twin Aero Commander aircraft models, is executed in compliance with Australia's international obligations and does not require public consultation or a Regulatory Impact Statement.
Scope and Application
The Civil Aviation Act 1988, as amended by the Civil Aviation Safety Regulations 1998, provides the legislative framework for the issuance of airworthiness directives (ADs) by the Civil Aviation Safety Authority (CASA). These regulations empower CASA to issue ADs for specific kinds of aircraft or aeronautical products, thereby ensuring adherence to safety standards that are critical for the ongoing airworthiness of aircraft. Such ADs serve as legislative instruments, subject to disallowance and scrutiny under the Legislative Instruments Act 2003. The geographic reach of these regulations applies nationally, with CASA acting as the authoritative body within Australia, ensuring compliance with both national and international standards set forth by the Convention on International Civil Aviation. The application of these directives extends to aircraft registered within Australia, irrespective of the state or territory, thus unifying safety regulations across the Commonwealth. Although the ADs are comprehensive, certain exclusions or exemptions may apply based on specific circumstances or types of aircraft, which are typically detailed within the ADs themselves or in subsidiary legislation. The issuance and enforcement of these directives are pivotal in maintaining the safety of air navigation, reflecting Australia’s commitment to international aviation safety standards.
Key Provisions
The Civil Aviation Act 1988 (section 98) empowers the Governor-General to make regulations necessary for the safety of air navigation. Regulation 39.001 of the Civil Aviation Safety Regulations 1998 authorises the Civil Aviation Safety Authority (CASA) to issue airworthiness directives (ADs) for certain types of aircraft or aeronautical products. Section 39.001(5) of these Regulations categorises ADs as disallowable instruments, meaning they can be annulled by a house of Parliament, and they are also recognised as legislative instruments under section 6 of the Legislative Instruments Act 2003. These directives are a common means of ensuring the continuing airworthiness of aircraft types and are issued by most ICAO Contracting States, including Australia.
Under Annex 8 to the Convention on International Civil Aviation, the State of Design holds primary responsibility for the continuing airworthiness of an aircraft type and must furnish necessary information to the States of Registry to maintain airworthiness. For aircraft registered in Australia, CASA, as the national airworthiness authority, is mandated to evaluate information provided by the State of Design and, if necessary, issue an Australian AD to enforce the required safety measures. This ensures that the continuing airworthiness of aircraft is maintained in accordance with international standards and practices.
The obligations imposed by these provisions on CASA and other entities include the assessment and, if required, the issuance of ADs to ensure the continuing airworthiness of aircraft on the Australian Register. CASA must also monitor international ADs issued by States of Design and determine if they necessitate the issuance of corresponding Australian ADs. The State of Registry, in this case, Australia, must develop or adopt requirements to ensure the continuing airworthiness of aircraft and comply with the ADs issued by CASA.
Failure to comply with the requirements of an AD can result in serious consequences. Civil penalties, including fines, may be imposed for non-compliance with airworthiness directives. Under the Civil Aviation Act 1988, penalties can include fines of up to $275,000 for individuals and $1.375 million for corporations. Additionally, CASA has the authority to take enforcement actions such as grounding aircraft or refusing to issue or renew airworthiness certificates, which can have significant operational impacts on airlines and aircraft operators. Such stringent measures are in place to ensure that airworthiness standards are upheld and public safety is prioritised.