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-6/57 affecting De Havilland DHC-6 (Twin Otter) model aeroplanes. CASA has assessed this AD and as a result has cancelled Australian AD/DHC-6/57. 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, 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 provide a legal framework for the regulation of civil aviation in Australia, with a focus on ensuring safety and efficiency. The Act grants the Governor-General the authority to make regulations, such as the Civil Aviation Safety Regulations 1998, which empower the Civil Aviation Safety Authority (CASA) to issue airworthiness directives (ADs) for specific types of aircraft or aeronautical products. This regulatory framework is designed to uphold Australia's obligations under the Convention on International Civil Aviation, particularly concerning the continuing airworthiness of aircraft. The ADs serve as a mechanism for communicating necessary safety information, and CASA, as the national airworthiness authority, is tasked with assessing and implementing these directives. The Civil Aviation Act 1988 thus addresses the need for a structured approach to managing the safety and airworthiness of aircraft within Australian airspace.
Scope and Application
The Civil Aviation Safety Regulations 1998, which are made under the authority of the Civil Aviation Act 1988, provide the framework within which the Civil Aviation Safety Authority (CASA) can issue airworthiness directives (ADs). These regulations apply to all aircraft registered in Australia and are intended to ensure the continuing airworthiness of these aircraft in accordance with both national and international standards. The scope of these regulations is broad, covering various types of aircraft and aeronautical products, and they extend to mandating the specific requirements set forth by ADs issued by the State of Design, which in the case of Australia, is CASA. The ADs are legislative instruments, which means they have the force of law and must be complied with by the relevant entities, including aircraft operators and owners.
The ADs apply to the aircraft operators and owners who hold an Australian aircraft registration, as well as to the manufacturers and other entities involved in the maintenance and operation of the aircraft. The ADs are issued to address specific safety concerns identified by CASA or by the aircraft’s State of Design, and they can cover a range of issues from design flaws to maintenance requirements. The geographic reach of these regulations is national, as they govern all aircraft registered in Australia. The application of these regulations is not subject to any exclusions or exemptions, and they apply uniformly across all states and territories. Any additional specifics or extensions to the application of these regulations can be provided through subordinate instruments, which CASA may issue to further clarify or implement the requirements of the ADs.
Key Provisions
The Civil Aviation Act 1988 and the Civil Aviation Safety Regulations 1998 provide the legal framework for the issuance of airworthiness directives (ADs) in Australia, with the Civil Aviation Safety Authority (CASA) having the authority to issue these directives under regulation 39.001. These ADs are legislative instruments and serve to ensure the continuing airworthiness of aircraft and aeronautical products, aligning with international standards as set out in Annex 8 to the Convention on International Civil Aviation. The State of Design is responsible for the ongoing airworthiness of an aircraft type, while the State of Registry is responsible for the airworthiness of individual aircraft. When a State of Design issues an AD, CASA must assess this information and, if necessary, issue an Australian AD to mandate the required actions.
Under this legislative framework, CASA and its predecessors have issued AD/DHC-6/57 for De Havilland DHC-6 (Twin Otter) model aeroplanes. This AD was subsequently assessed and cancelled by CASA, effective from 20 November 2008. The cancellation was made due to Australia's obligations under the Convention on International Civil Aviation, and it was determined that no replacement AD was required as the previously identified unsafe condition no longer existed. Given these circumstances, there was no need for public consultation or a Regulatory Impact Statement, as determined by the Office of Best Practice Regulation. The Manager, Systems and New Technologies, in the Airworthiness Engineering Group, made this AD cancellation on behalf of CASA, in accordance with subsection 84A(2) of the Civil Aviation Act 1988.
Failure to comply with an airworthiness directive can lead to significant legal consequences. Operators of aircraft and aeronautical products must adhere to the requirements outlined in ADs to ensure safety. Non-compliance can result in enforcement actions by CASA, which may include fines, suspension or revocation of airworthiness certificates, and other administrative or legal penalties. The maximum penalties for breaches of airworthiness regulations can vary, but they are intended to be stringent to enforce compliance and ensure the safety of air navigation. Civil penalties can include fines up to a specified maximum amount, while criminal penalties can include imprisonment, depending on the severity of the breach and the discretion of the court.