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/AC/27 affecting all Twin Aero Commander aircraft models. CASA has assessed this AD and as a result has cancelled Australian AD/AC/27. The cancellation will become effective on 31 July 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 Branch, on behalf of CASA, in accordance with subsection 84A (2) of the Act.
Overview
The Civil Aviation Act 1988 was enacted to establish a comprehensive regulatory framework for civil aviation in Australia, ensuring the safety and efficiency of air navigation and operations. One significant aspect of this legislation is the authority it grants to the Civil Aviation Safety Authority (CASA) to issue airworthiness directives (ADs) under regulation 39.001 of the Civil Aviation Safety Regulations 1998. These ADs are legislative instruments that mandate safety requirements for aircraft and aeronautical products. The Act empowers CASA to respond to international safety standards, such as those outlined in Annex 8 to the Convention on International Civil Aviation, by issuing or cancelling ADs as appropriate. In the specific case of Twin Aero Commander aircraft models, CASA has issued an AD/AC/27, which has subsequently been cancelled due to the resolution of the safety concerns that initially prompted its issuance. This cancellation aligns with Australia's obligations under the Convention on International Civil Aviation, and no public consultation was required as per the determination of the Office of Best Practice Regulation. The AD cancellation was made by the Manager, Systems and New Technologies, in the Airworthiness Engineering Branch, on behalf of CASA, in accordance with the provisions of the Act.
Scope and Application
The Civil Aviation Act 1988, in conjunction with the Civil Aviation Safety Regulations 1998, provides the legal framework for the issuance of airworthiness directives (ADs) by the Civil Aviation Safety Authority (CASA) to ensure the safety of air navigation. Regulation 39.001 of the Civil Aviation Safety Regulations 1998 allows CASA to issue ADs for kinds of aircraft or aeronautical products, which are legislative instruments subject to disallowance under the Acts Interpretation Act 1901 and legislative oversight under the Legislative Instruments Act 2003. The Act applies to aircraft and aeronautical products within Australia, governed by the State of Registry, which is responsible for the continuing airworthiness of each aircraft type registered in Australia. CASA, as the national airworthiness authority, is mandated to issue Australian ADs in response to international ADs issued by the State of Design, ensuring compliance with the Convention on International Civil Aviation. The geographic reach of this legislation is national, with international obligations under ICAO conventions guiding its application. This regulation does not include specific exclusions or thresholds but extends its application through subordinate instruments, ensuring that safety standards are uniformly enforced across all regulated entities and aircraft within Australia.
Key Provisions
The Civil Aviation Act 1988, in section 98, empowers the Governor-General to establish regulations that support the Act and enhance the safety of air navigation. One such regulation, found in section 39.001 of 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 are considered disallowable instruments under section 46A of the Acts Interpretation Act 1901 and are classified as legislative instruments according to section 6 of the Legislative Instruments Act 2003. Such directives serve as crucial tools for maintaining the airworthiness of aircraft and aeronautical products.
Under the obligations set forth by Annex 8 of the Convention on International Civil Aviation, the State of Design retains overarching responsibility for ensuring the ongoing airworthiness of an aircraft type. This entails providing any necessary information to the States of Registry to maintain airworthiness. In Australia, CASA, acting as the national airworthiness authority, has the duty to evaluate this information. If necessary, CASA must issue an Australian AD to enforce the requirements of the State of Design. The State of Registry, in this case, CASA, is responsible for the continuing airworthiness of individual aircraft. This includes developing or adopting requisite measures to ensure airworthiness.
Regulatory compliance with ADs is mandatory for all parties involved. Aircraft operators and owners must adhere to the directives issued by CASA. This involves implementing any required modifications, inspections, or maintenance actions specified in the ADs to ensure the aircraft remain airworthy. Failure to comply with these directives can lead to severe consequences, including potential grounding of the aircraft and legal penalties. CASA has the authority to enforce compliance through inspections, audits, and other regulatory measures. In the specific case of Twin Aero Commander aircraft models, the AD/AC/27 issued by CASA has been cancelled, effective from 31 July 2008, as the unsafe condition it addressed no longer exists.
In terms of legal ramifications, non-compliance with ADs can result in both civil and criminal penalties. Under section 30(1) of the Civil Aviation Act 1988, an offence is committed if a person fails to comply with an airworthiness directive. Such offences may lead to fines and, in serious cases, imprisonment. The maximum penalty for contravening an AD is a fine of up to 500 penalty units or imprisonment for up to five years, or both. These penalties underscore the importance of strict adherence to ADs to maintain the highest safety standards in civil aviation.