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 German LBA has issued AD 82-99 affecting Messerschmitt-Bolkow Blohm BO‑105 model helicopters. Germany is the State of Design for this type. CASA has assessed this AD and has issued Australian AD/BO 105/20, which will become effective on 27 September 2007.
As this AD is issued because of Australia’s obligations under Convention on International Civil Aviation, and because it is issued in response to an AD raised by the relevant State of Design, no consultation of the Australian public has taken place on this AD. 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 for the regulation of civil aviation in Australia, with a particular focus on ensuring the safety of air navigation. Under section 98 of the Act, the Governor-General is empowered to make regulations that are in the interests of air navigation safety. The Civil Aviation Safety Regulations 1998, which were made under this authority, include provisions for the issuance of airworthiness directives (ADs) by the Civil Aviation Safety Authority (CASA). These ADs serve as legislative instruments, subject to disallowance under section 46A of the Acts Interpretation Act 1901 and as legislative instruments under the Legislative Instruments Act 2003. The issuance of these directives is integral to fulfilling Australia's obligations under the Convention on International Civil Aviation, particularly the responsibilities of the State of Design and the State of Registry for the continuing airworthiness of aircraft. In this context, CASA has issued an Australian AD in response to a German AD affecting Messerschmitt-Bolkow Blohm BO-105 model helicopters, reflecting the collaborative international effort to maintain aviation safety standards.
Scope and Application
The Civil Aviation Safety Regulations 1998, as amended, under section 98 of the Civil Aviation Act 1988, empower the Civil Aviation Safety Authority (CASA) to issue airworthiness directives (ADs) concerning specific types of aircraft or aeronautical products to ensure air safety. These directives are legislative instruments that are issued in response to international obligations under the Convention on International Civil Aviation and are a common form of continuing airworthiness information shared among International Civil Aviation Organization (ICAO) Contracting States. In accordance with Annex 8 of the Convention, the State of Design is responsible for the continuing airworthiness of an aircraft type, while the State of Registry, in this case CASA, must ensure the continuing airworthiness of aircraft within Australia by developing or adopting requirements, which may include issuing Australian ADs based on directives from the State of Design. The ADs do not require consultation with the Australian public or a Regulatory Impact Statement, as determined by the Office of Best Practice Regulation. The ADs are issued by CASA in accordance with the relevant provisions of the Civil Aviation Act 1988 and the Civil Aviation Safety Regulations 1998.
Key Provisions
The main operative sections of the Civil Aviation Safety Regulations 1998, particularly regulation 39.001, empower the Civil Aviation Safety Authority (CASA) to issue airworthiness directives (ADs). These ADs apply to specific types of aircraft or aeronautical products and are intended to ensure the ongoing safety and airworthiness of aircraft (s. 39.001). Regulation 39.001(5) further clarifies that ADs are considered legislative instruments, subject to disallowance under section 46A of the Acts Interpretation Act 1901 and the Legislative Instruments Act 2003 (s. 6). These regulations are rooted in Australia's commitment to international standards, particularly those outlined in Annex 8 to the Convention on International Civil Aviation, which mandates that the State of Design has the overarching responsibility for the continuing airworthiness of an aircraft type.
Under the Civil Aviation Safety Regulations 1998, CASA, as Australia's national airworthiness authority, has a crucial role in ensuring the continuing airworthiness of aircraft registered in Australia. When an AD is issued by the State of Design, such as the German LBA for the Messerschmitt-Bolkow Blohm BO-105 model helicopters, CASA must evaluate this directive and, if deemed necessary, issue an Australian AD. This process ensures that the requirements of the State of Design are appropriately adapted and enforced within Australia (s. 39.001). Furthermore, under Annex 8, the State of Registry, which in this context is Australia, must adopt or develop its own requirements to ensure the airworthiness of the aircraft registered within its territory.
The obligations imposed by these regulations are significant. CASA must thoroughly assess any ADs issued by the State of Design, ensuring that they align with international safety standards and are suitable for the specific types of aircraft registered in Australia. CASA's assessment and subsequent issuance of an Australian AD are critical steps in maintaining the safety and airworthiness of aircraft operating within Australia. This process ensures that the necessary safety measures are implemented without delay, thereby safeguarding both the aviation industry and the public.
There are also specific legal consequences for non-compliance with the ADs. The Civil Aviation Safety Regulations 1998 do not explicitly detail the penalties for breaching an AD, but general aviation laws and regulations provide for substantial fines and potential imprisonment for serious non-compliance. Under the Civil Aviation Act 1988, offences related to the operation of non-compliant aircraft can result in penalties up to several thousand dollars, and in severe cases, imprisonment for up to two years (s. 23). Additionally, failure to comply with an AD can lead to aircraft being grounded, further emphasising the importance of adherence to these directives.