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/DHC-6/4 affecting De Havilland DHC-6 (Twin Otter) model aeroplanes. CASA has assessed this AD and as a result has cancelled Australian AD/DHC-6/4. The cancellation will become effective on 20 November 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, Airframe and Structures, 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 provide a comprehensive framework for the regulation of civil aviation in Australia, addressing the need for effective and safe management of airspace and aircraft within the country. This Act empowers the Governor-General to make regulations aimed at ensuring the safety of air navigation. One such regulation, set out in the Civil Aviation Safety Regulations 1998, allows the Civil Aviation Safety Authority (CASA) to issue airworthiness directives (ADs) for specific types of aircraft or aeronautical products. These ADs serve as legislative instruments under the Acts Interpretation Act 1901 and are designed to maintain the continuing airworthiness of aircraft in accordance with international standards set by the Convention on International Civil Aviation. The cancellation of an Australian AD for the De Havilland DHC-6 (Twin Otter) model aeroplanes reflects CASA's commitment to fulfilling Australia's obligations under the Convention while ensuring the safety and airworthiness of aircraft registered in Australia.
Scope and Application
The Civil Aviation Act 1988, along with the Civil Aviation Safety Regulations 1998, establishes the framework under which airworthiness directives (ADs) are issued and managed in Australia. These regulations empower the Civil Aviation Safety Authority (CASA) to issue ADs for specific types of aircraft or aeronautical products, ensuring that safety standards are met and maintained. The issuance of such directives is essential for the continuing airworthiness of aircraft, aligning with Australia's obligations under the Convention on International Civil Aviation. Geographically, these regulations apply nationally, as CASA acts as the central authority responsible for the continuing airworthiness of aircraft registered in Australia. The application of ADs is not limited to domestic concerns but extends to international cooperation, as the State of Design has overall responsibility for the airworthiness of an aircraft type and must provide necessary information to States of Registry. While ADs are legislative instruments and subject to disallowance, they do not require consultation with the Australian public or a Regulatory Impact Statement, as determined by the Office of Best Practice Regulation. The scope of these regulations ensures that CASA can effectively mandate safety requirements when necessary, reflecting Australia's commitment to international aviation safety standards.
Key Provisions
The Civil Aviation Act 1988, specifically under section 98, empowers the Governor-General to establish regulations aimed at ensuring the safety of air navigation. The Civil Aviation Safety Regulations 1998 further elaborate on this by allowing the Civil Aviation Safety Authority (CASA) to issue airworthiness directives (ADs) for specific types of aircraft or aeronautical products. Section 39.001 of the Civil Aviation Safety Regulations 1998 provides the framework for these ADs, which are legislative instruments as per section 6 of the Legislative Instruments Act 2003. This means that ADs are legally binding documents that carry significant weight in ensuring the safety and airworthiness of aircraft.
Under the regulations, CASA, as Australia's national airworthiness authority, is mandated to assess any AD issued by the State of Design of an aircraft type and, if deemed necessary, issue corresponding Australian ADs. This process ensures that the continuing airworthiness of aircraft on the Australian Register is maintained in accordance with international standards set by the Convention on International Civil Aviation, particularly Annex 8. The State of Registry is also responsible for ensuring the continuing airworthiness of individual aircraft, developing or adopting the necessary requirements to fulfil this responsibility.
Compliance with these directives is crucial for all parties involved. Aircraft operators, maintenance organisations, and other stakeholders must adhere to the requirements set out in the ADs. Failure to comply with an AD can result in significant safety risks, and consequently, legal repercussions. The obligations imposed by these regulations are clear: all relevant parties must act promptly to implement the requirements of any ADs that apply to their aircraft or aeronautical products.
Breach of the obligations outlined in the ADs can lead to severe consequences. While the specific penalties are not detailed in the provided text, it is common under such regulations for breaches to result in civil or criminal penalties, including fines and imprisonment. The exact penalties would depend on the severity of the breach and the specific regulations being contravened. The authority to issue these ADs and the legal framework supporting them underscore the importance of maintaining high safety standards in the aviation industry.