CASA ADCX 001/10 - Revocation of Airworthiness Directives

Overview

The Civil Aviation Regulations 1988 were enacted to provide comprehensive regulation of civil aviation in Australia, with a particular focus on ensuring the safety of air navigation. The Act empowers the Governor-General to make regulations under section 98 of the Civil Aviation Act 1988, and regulation 39.001 of the Civil Aviation Safety Regulations 1998 grants the Civil Aviation Safety Authority (CASA) the authority to issue airworthiness directives (ADs) for specific types of aircraft or aeronautical products. These ADs are considered legislative instruments, as outlined in the Legislative Instruments Act 2003. The policy objective of these regulations is to align with international standards, as stipulated in Annex 8 to the Convention on International Civil Aviation, which places responsibility on the State of Design for the continuing airworthiness of aircraft types and on the State of Registry for individual aircraft. The revocation of certain ADs aims to address outdated or no longer necessary safety directives, ensuring that regulatory requirements remain relevant and effective. CASA, as Australia's national airworthiness authority, is responsible for assessing and potentially issuing Australian ADs when State of Design ADs are published. The revocation of certain ADs, as detailed in the explanatory statement, pertains to modifications issued in 1959 for various Scottish Aviation models. These ADs have been cancelled due to the extended period since their publication and their perceived lack of current necessity. The process of revocation was conducted by the Manager, Continuing Airworthiness in the Airworthiness and Engineering Branch on behalf of CASA, in compliance with subsection 94(1) of the Civil Aviation Act 1988. No public consultation was undertaken for these specific AD cancellations, as the Office of Best Practice Regulation determined that ADs do not require a Regulatory Impact Statement.

Scope and Application

The Civil Aviation Regulations 1988, under the authority of the Civil Aviation Act 1988, empower the Governor-General to create regulations that promote the safety of air navigation, including the issuance of airworthiness directives (ADs) by the Civil Aviation Safety Authority (CASA). These ADs apply to specific types of aircraft or aeronautical products and are considered legislative instruments under the Acts Interpretation Act 1901 and the Legislative Instruments Act 2003. The State of Design has the primary responsibility for the continuing airworthiness of aircraft types, and ADs are a common means of conveying such information to States of Registry, including Australia. CASA, as the national airworthiness authority, must evaluate ADs issued by States of Design and, if appropriate, issue corresponding ADs for aircraft registered in Australia. This regulation specifically addresses the revocation of certain State of Design ADs issued prior to 1 October 2009, which CASA has determined are no longer necessary due to the passage of time and the incorporation of modifications during aircraft construction. The scope of these AD revocations pertains to particular aircraft models, such as Scottish Aviation Mod. C162, C285, C311, C319, C324, and C334, and the revocations are made under section 94 of the Civil Aviation Act 1988.

Key Provisions

The Civil Aviation Regulations 1988, particularly under section 98 of the Civil Aviation Act 1988, allow the Governor-General to make regulations for the safety of air navigation. Regulation 39.001 of the Civil Aviation Safety Regulations 1998 enables the Civil Aviation Safety Authority (CASA) to issue airworthiness directives (ADs) for specific kinds of aircraft or aeronautical products. An AD is a legislative instrument as defined by the Legislative Instruments Act 2003, and it falls under the category of disallowable instruments as per section 46A of the Acts Interpretation Act 1901. These regulations are designed to ensure that aircraft meet the necessary safety standards set by the State of Design and the State of Registry. The Civil Aviation Regulations 1988 impose several obligations on the parties and entities it governs. The State of Design is responsible for the continuing airworthiness of an aircraft type, including providing necessary information to appropriate States of Registry. CASA, as Australia’s national airworthiness authority, must assess the information provided by the State of Design and, if appropriate, issue an Australian AD to mandate the requirements. Additionally, the State of Registry must develop or adopt requirements to ensure the continuing airworthiness of aircraft within its jurisdiction. These obligations ensure that both the design and registry states collaborate to maintain the safety standards of aircraft in operation. Failure to comply with the provisions set out in the Civil Aviation Regulations 1988 can result in various civil and criminal consequences. While the text does not explicitly state the specific penalties, violations of airworthiness directives can lead to enforcement actions by CASA, which may include fines, suspension, or revocation of aircraft certificates of airworthiness. Non-compliance with ADs can also result in safety risks, potentially leading to accidents or incidents, which may further incur civil liabilities. Although the exact maximum penalties are not detailed in the provided text, they are likely to be significant given the critical nature of airworthiness regulations.