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.
CASA issued AD/DH 87/3, affecting De Havilland DH 87 model aircraft in 2005. This AD was based on UK AD G-2005-0025. The UK, the State of Design for this type, has now cancelled their AD. As a result, CASA has cancelled AD/DH 87/3. The cancellation will become effective on 10 April 2008. No replacement AD is required, as the UK CAA has determined that normal maintenance practices will ensure airworthiness.
No consultation with the Australian public has taken place on this AD cancellation, because the cancellation results in a reduction of the regulatory burden. 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, Airframes in the Airworthiness Engineering Branch, 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 legal framework for civil aviation in Australia, with the overarching aim of ensuring the safety of air navigation. The Act grants the Governor-General the authority to make regulations, which are critical in the interests of safety. One such regulation, 39.001 of the Civil Aviation Safety Regulations 1998, empowers the Civil Aviation Safety Authority (CASA) to issue airworthiness directives (ADs) for specific types of aircraft or aeronautical products. These ADs, considered legislative instruments, play a pivotal role in maintaining the continuing airworthiness of aircraft, as mandated by Annex 8 to the Convention on International Civil Aviation. The Civil Aviation Safety Regulations 1998 further clarify that ADs are disallowable instruments, ensuring they are subject to parliamentary scrutiny. CASA issued and subsequently cancelled AD/DH 87/3, which affected De Havilland DH 87 model aircraft, based on the UK's decision to cancel their corresponding AD. The cancellation, effective from 10 April 2008, reflects the UK's determination that normal maintenance practices would suffice to maintain airworthiness, thus reducing the regulatory burden without necessitating a replacement AD. This action was taken in accordance with the Act and did not require public consultation or a Regulatory Impact Statement.
Scope and Application
The Civil Aviation Act 1988, as supplemented by the Civil Aviation Safety Regulations 1998, provides a framework for ensuring the safety of air navigation in Australia, with a particular emphasis on the continuing airworthiness of aircraft. This legislation applies to entities such as aircraft manufacturers, aircraft operators, and the Civil Aviation Safety Authority (CASA), which acts as the national airworthiness authority. The regulations allow CASA to issue airworthiness directives (ADs) for specific types of aircraft or aeronautical products, ensuring that they meet safety standards. Geographically, this Act and its regulations apply nationally across Australia, aligning with the requirements set forth by the International Civil Aviation Organization (ICAO) and Annex 8 of the Convention on International Civil Aviation. ADs serve as critical tools for maintaining airworthiness, often being issued by the State of Design and adopted or adapted by the State of Registry, in this case, CASA. Subordinate instruments can extend or restrict the application of these regulations, and while ADs are legislative instruments, they do not require consultation with the Australian public or a Regulatory Impact Statement if they reduce regulatory burden.
Key Provisions
The main sections of the Civil Aviation Safety Regulations 1998, specifically regulation 39.001, allow the Civil Aviation Safety Authority (CASA) to issue airworthiness directives (ADs) for specific kinds of aircraft or aeronautical products. This authority is exercised under the overarching mandate provided by section 98 of the Civil Aviation Act 1988, which empowers the Governor-General to make regulations for air navigation safety. These ADs, detailed in subregulation 39.001(5), are classified as disallowable instruments under section 46A of the Acts Interpretation Act 1901, making them legislative instruments according to the Legislative Instruments Act 2003.
The obligations and requirements imposed by these regulations are multifaceted. The State of Design, which is responsible for the continuing airworthiness of an aircraft type, must provide necessary information to the State of Registry to ensure compliance with airworthiness standards. This is in accordance with Annex 8 to the Convention on International Civil Aviation. The State of Registry, in this case CASA as Australia's national airworthiness authority, must assess the information provided by the State of Design and, if deemed necessary, issue an Australian AD. The State of Registry is also tasked with developing or adopting requirements to ensure the continuing airworthiness of aircraft within its jurisdiction. This framework ensures that both States of Design and Registry collaborate to maintain the safety and airworthiness of aircraft.
Failure to comply with the ADs can result in serious consequences. The Civil Aviation Safety Regulations 1998 do not explicitly detail the penalties for non-compliance with ADs, but non-compliance generally falls under the broader enforcement powers of the Civil Aviation Act 1988. This can include administrative actions, fines, and, in severe cases, prosecution leading to imprisonment. The exact penalties depend on the nature and severity of the breach but are intended to enforce adherence to safety standards rigorously. Additionally, CASA has the authority to take enforcement actions, including grounding non-compliant aircraft, which can have significant operational and financial implications for aircraft operators.
In the specific case of AD/DH 87/3, which affected De Havilland DH 87 model aircraft, CASA issued this directive in 2005 based on a UK AD. However, the UK subsequently cancelled their AD, leading CASA to also cancel AD/DH 87/3, effective from 10 April 2008. The decision to cancel the AD was made following the UK's determination that normal maintenance practices would ensure continued airworthiness, hence no replacement AD was necessary. The cancellation of this AD was made by the Manager, Airframes in the Airworthiness Engineering Branch, on behalf of CASA, in compliance with subsection 84A(2) of the Civil Aviation Act 1988. This process underscores the regulatory framework's flexibility and responsiveness to evolving safety information and practices.