AD/MU-2/26 - Control Cable Turnbuckles - Inspection and Replacement - CANCELLED

Overview

The Civil Aviation Act 1988 was enacted to regulate civil aviation and ensure the safety of air navigation within Australia. The Act provides a legislative framework that allows for the issuance of regulations to maintain and enhance the safety standards of aircraft and aeronautical products. Section 98 of the Act empowers the Governor-General to create regulations for the Act's purposes, with a focus on ensuring the safety of air navigation. The Civil Aviation Safety Regulations 1998, made under the authority of the Act, further elaborate on these safety standards by enabling the Civil Aviation Safety Authority (CASA) to issue airworthiness directives (ADs) for specific types of aircraft or aeronautical products. This mechanism is integral to maintaining the continuing airworthiness of aircraft, ensuring compliance with international standards as set forth by the Convention on International Civil Aviation. CASA, acting as Australia’s national airworthiness authority, assesses ADs issued by States of Design and may issue corresponding Australian ADs to mandate necessary safety requirements.

Scope and Application

The Civil Aviation Act 1988, as amended and supported by the Civil Aviation Safety Regulations 1998, provides a framework for the regulation of civil aviation in Australia, including the issuance of airworthiness directives (ADs) that mandate safety standards for aircraft and aeronautical products. Specifically, regulation 39.001 empowers the Civil Aviation Safety Authority (CASA) to issue ADs for certain kinds of aircraft or aeronautical products, with these directives being legislative instruments subject to disallowance under the Acts Interpretation Act 1901. This regulatory mechanism is integral to ensuring the continuing airworthiness of aircraft registered in Australia, aligning with international obligations under Annex 8 to the Convention on International Civil Aviation, which places responsibility for airworthiness on the State of Design and State of Registry. CASA's role is to assess and, if necessary, issue ADs to enforce the safety standards determined by the State of Design. In the case of Mitsubishi MU-2 aircraft, CASA has cancelled an existing AD (AD/MU-2/26) due to the resolution of the unsafe condition, effective from 2 July 2009, without the need for a replacement AD. This decision aligns with Australia's international obligations and has been made without public consultation or the need for a Regulatory Impact Statement as determined by the Office of Best Practice Regulation.

Key Provisions

The Civil Aviation Act 1988, under section 98, empowers the Governor-General to create regulations aimed at ensuring the safety of air navigation. Complementing this, regulation 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. According to subregulation 39.001(5), an AD is classified as a disallowable instrument under section 46A of the Acts Interpretation Act 1901, and consequently, an AD is considered a legislative instrument as per section 6 of the Legislative Instruments Act 2003. In the context of international standards, Annex 8 to the Convention on International Civil Aviation stipulates that the State of Design bears the responsibility for the continuing airworthiness of an aircraft type, requiring it to furnish necessary information to ensure the ongoing airworthiness of the type to appropriate States of Registry. The State of Registry, in turn, is responsible for the continuing airworthiness of individual aircraft and must develop or adopt requirements to uphold this responsibility. In accordance with these international obligations, when a State of Design issues an AD against a type of aircraft registered in Australia, CASA, as the national airworthiness authority, must evaluate the information and, if necessary, issue an Australian AD to enforce the requirements set by the State of Design. The obligations under the Civil Aviation Act 1988 and the Civil Aviation Safety Regulations 1998 necessitate that CASA thoroughly assesses ADs issued by the State of Design, particularly when they pertain to aircraft registered in Australia. This process ensures compliance with international standards for airworthiness and safety. CASA's role includes the evaluation of the AD's content and determining whether an Australian AD is required to address any identified unsafe conditions. In the case of AD/MU-2/26, which affected Mitsubishi MU-2 aircraft, CASA assessed the AD and decided to cancel it, effective 2 July 2009, because the unsafe condition it addressed no longer existed. Given the cancellation of AD/MU-2/26 under Australia's obligations under the Convention on International Civil Aviation, there was no consultation with the Australian public on this matter. Additionally, the Office of Best Practice Regulation has concluded that ADs do not necessitate a Regulatory Impact Statement. The AD was issued by the Manager, Systems and New Technologies, within the Airworthiness Engineering Group, on behalf of CASA, in accordance with subsection 84A(2) of the Civil Aviation Act 1988. Under the Civil Aviation Safety Regulations 1998, any breach of the requirements set forth by an AD could lead to civil or criminal consequences, including potential fines and imprisonment, depending on the severity of the violation. The specific penalties are outlined in the relevant sections of the Civil Aviation Act 1988 and the Civil Aviation Safety Regulations 1998. Failure to comply with an AD can result in the grounding of an aircraft, further enforcement actions by CASA, and, in severe cases, criminal charges for operators or individuals who do not adhere to the mandated safety standards.