AD/T53/2 - First Stage Power Turbine Rotor Blade Retaining Pins Retirement Life - CANCELLED

Overview

The Civil Aviation Act 1988 was enacted to regulate the safety and efficiency of civil aviation within Australia, ensuring compliance with international standards and the safety of air navigation. This legislation empowers the Governor-General to establish regulations under section 98, which the Civil Aviation Safety Regulations 1998 further elaborate on, particularly through regulation 39.001 that allows the Civil Aviation Safety Authority (CASA) to issue airworthiness directives (ADs). These ADs serve as a legislative instrument to maintain the continuing airworthiness of aircraft, aligning with international obligations under Annex 8 of the Convention on International Civil Aviation. CASA issued AD/T53/2 for AlliedSignal (Lycoming) turbine engines T53 series but subsequently cancelled it on 30 July 2009, as the unsafe condition no longer existed, thereby fulfilling Australia's international obligations without the need for public consultation or a Regulatory Impact Statement. The cancellation was executed by the Manager, Systems and New Technologies, within CASA’s Airworthiness Engineering Group, in accordance with the legislative framework provided by the Act.

Scope and Application

The Civil Aviation Act 1988 and the associated Civil Aviation Safety Regulations 1998 provide the legal framework for the issuance and management of airworthiness directives (ADs) in Australia, with a specific focus on ensuring the safety of air navigation. Pursuant to section 98 of the Civil Aviation Act 1988, the Governor-General has the authority to make regulations necessary for the safety of air navigation, while regulation 39.001 of the Civil Aviation Safety Regulations 1998 empowers the Civil Aviation Safety Authority (CASA) to issue ADs for specific kinds of aircraft or aeronautical products. Notably, an AD is considered a disallowable instrument under the Acts Interpretation Act 1901, thereby classifying it as a legislative instrument under the Legislative Instruments Act 2003. These ADs are pivotal in maintaining the continuing airworthiness of aircraft, aligning with the responsibilities of the State of Design and the State of Registry as outlined in Annex 8 to the Convention on International Civil Aviation. CASA, as Australia's national airworthiness authority, is tasked with assessing ADs issued by other States of Design and determining whether to mandate these requirements within Australia. The AD in question, concerning AlliedSignal (Lycoming) turbine engines T53 series, has been assessed and subsequently cancelled by CASA, effective from 30 July 2009, as the unsafe condition no longer exists, thereby negating the need for public consultation or a Regulatory Impact Statement. This cancellation reflects Australia’s adherence to international obligations under the Convention on International Civil Aviation.

Key Provisions

The Civil Aviation Act 1988, supplemented by the Civil Aviation Safety Regulations 1998, establishes a framework for ensuring the safety of air navigation, including the issuance of airworthiness directives (ADs). Under section 98 of the Act, the Governor-General is empowered to make regulations for safety purposes, and regulation 39.001 specifically authorises the Civil Aviation Safety Authority (CASA) to issue ADs for types of aircraft or aeronautical products. An AD is defined as a disallowable instrument under the Acts Interpretation Act 1901 and is treated as a legislative instrument according to the Legislative Instruments Act 2003. These ADs serve as a mechanism for communicating necessary information to ensure the continuing airworthiness of aircraft types, in line with the Convention on International Civil Aviation. The obligations imposed by the Act and the Regulations primarily fall on CASA and the State of Registry. CASA, as Australia’s national airworthiness authority, must evaluate any ADs issued by the State of Design concerning aircraft types registered in Australia. If deemed appropriate, CASA is required to issue an Australian AD to enforce the requirements outlined by the State of Design. The State of Registry, meanwhile, has the responsibility of ensuring the continuing airworthiness of individual aircraft by developing or adopting relevant requirements. This collaborative approach is essential to maintaining high safety standards in civil aviation. Breaches of the provisions under the Civil Aviation Act 1988 and the Civil Aviation Safety Regulations 1998 can lead to various civil or criminal consequences. Although the specific offences and penalties are not detailed in the provided text, generally, non-compliance with ADs can result in significant penalties. For instance, failing to comply with an AD can lead to enforcement actions, fines, and potential criminal charges if the non-compliance results in a safety hazard. The exact penalties would depend on the severity of the breach and the specific regulatory provisions violated. In the case of the cancellation of Australian AD/T53/2, the process was conducted in accordance with Australia’s obligations under the Convention on International Civil Aviation. The cancellation was made effective on 30 July 2009, with no need for a replacement AD as the unsafe condition no longer existed. Given the nature of this regulatory action, no public consultation or Regulatory Impact Statement was required. The Manager, Systems and New Technologies, in the Airworthiness Engineering Group, issued the AD on behalf of CASA, adhering to the requirements set out in subsection 84A(2) of the Act.