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 raised AD/R44/18 to correct an unsafe situation on Robinson R44 helicopters in February 2003. The AD was raised as a result of an accident, which was caused by disbonding in the Main Rotor Blades (MRB). The State of Design for this type, the USA, has not yet taken action to correct this unsafe condition. Subsequent investigation of the accident and the disbonding has now shown that the problem is not as critical as first thought, so the AD has been amended to reduce the impact on operators. The amended AD, AD/R44/18 Amendment 1, will become effective on 11 May 2006. This AD cancels and replaces the previous issue.
CASA has not consulted with the Australian industry and public, because this amendment significantly reduces the burden on industry.
The Office of Regulatory Review has determined that ADs do not require a Regulatory Impact Statement.
The AD has been made by the Manager, Airframes in the Manufacturing, Certification and New Technologies Office, on behalf of CASA, in accordance with subsection 84A (2) of the Act.
Overview
The Civil Aviation Act 1988 was enacted to provide a legislative framework for ensuring the safety of air navigation and the continuing airworthiness of aircraft, among other objectives. The Act empowers the Governor-General to make regulations that serve the interests of aviation safety, including the issuance of airworthiness directives. The Civil Aviation Safety Regulations 1998 further operationalise these provisions, stipulating that the Civil Aviation Safety Authority (CASA) can issue airworthiness directives for specific types of aircraft or aeronautical products. These directives are legislative instruments subject to disallowance under the Acts Interpretation Act 1901 and the Legislative Instruments Act 2003. The objective of these directives is to address and mitigate unsafe conditions identified in aircraft types registered in Australia, aligning with the responsibilities outlined in Annex 8 to the Convention on International Civil Aviation, which places the onus on the State of Design to ensure the continuing airworthiness of aircraft types. In the case of the Robinson R44 helicopter, CASA issued and subsequently amended an airworthiness directive to address a previously identified unsafe condition, demonstrating the regulatory body's proactive role in maintaining aviation safety standards.
Scope and Application
The Civil Aviation Act 1988 and the Civil Aviation Safety Regulations 1998 establish the framework for issuing airworthiness directives (ADs) in Australia, focusing on ensuring the safety of air navigation. Specifically, regulation 39.001 empowers the Civil Aviation Safety Authority (CASA) to issue ADs for certain kinds of aircraft or aeronautical products. These ADs serve as legislative instruments, subject to disallowance under section 46A of the Acts Interpretation Act 1901. The application of these regulations extends to all aircraft registered in Australia, ensuring that the State of Registry, which in this case is CASA, maintains the continuing airworthiness of such aircraft. This legislative framework is consistent with international standards under Annex 8 to the Convention on International Civil Aviation, where the State of Design holds primary responsibility for an aircraft type's airworthiness, while the State of Registry ensures compliance with airworthiness directives. Although CASA issued the AD/R44/18 Amendment 1 in response to identified safety concerns, it did not seek public consultation due to the reduced regulatory burden resulting from the amendment.
Key Provisions
The Civil Aviation Act 1988 and the Civil Aviation Safety Regulations 1998 (CASR) form the foundational framework governing airworthiness directives (ADs) in Australia. Section 98 of the Act empowers the Governor-General to make regulations for the safety of air navigation, while regulation 39.001 of the CASR enables the Civil Aviation Safety Authority (CASA) to issue ADs for specific kinds of aircraft or aeronautical products. Section 39.001(5) further classifies ADs as disallowable instruments, making them subject to scrutiny under the Legislative Instruments Act 2003.
Entities governed by these regulations, particularly CASA, bear significant obligations. For instance, CASA must evaluate ADs issued by the State of Design (the country where the aircraft type was designed) and determine if an Australian AD is necessary to mandate the safety requirements. This ensures that the continuing airworthiness of aircraft types registered in Australia meets international safety standards. The State of Registry, which is responsible for the ongoing airworthiness of individual aircraft, must also comply with these ADs to ensure the safety of aircraft operating within its jurisdiction.
Failure to comply with ADs can lead to severe consequences. While the Civil Aviation Act 1988 does not explicitly state penalties for non-compliance with ADs, such breaches could potentially lead to enforcement actions under other provisions of the Act, such as section 91, which allows CASA to take action against unsafe aircraft. Non-compliance could result in enforcement measures, including grounding of the aircraft, fines, or other regulatory sanctions. It is crucial for operators and entities governed by these regulations to adhere to the ADs to maintain the safety standards required by Australian and international aviation laws.
In summary, the Civil Aviation Act 1988 and CASR provide a structured approach for the issuance and enforcement of ADs, ensuring that aircraft and aeronautical products meet necessary safety standards. The roles and responsibilities of CASA and the State of Registry are pivotal in this process, with non-compliance potentially leading to significant regulatory and safety repercussions.