AD/AA-5/25 - Elevator Drain Holes - Inspection and Modification - CANCELLED

Overview

The Civil Aviation Act 1988, enacted by the Commonwealth Parliament, establishes a comprehensive legal framework for the regulation of civil aviation in Australia. The Act aims to ensure the safety, efficiency, and regularity of air services, while also addressing issues related to the registration and certification of aircraft, personnel, and air navigation facilities. The Civil Aviation Safety Regulations 1998 were subsequently enacted to provide further detail on implementing the provisions of the Act. One significant aspect of the Act is the issuance of airworthiness directives, which are regulatory instruments used to address safety concerns related to specific types of aircraft or aeronautical products. Regulation 39.001 of the Civil Aviation Safety Regulations 1998 empowers the Civil Aviation Safety Authority (CASA) to issue such directives, and subregulation 39.001(5) classifies them as disallowable instruments under the Acts Interpretation Act 1901. This particular legislative instrument is part of Australia's commitment to adhering to international standards and obligations, as outlined in Annex 8 to the Convention on International Civil Aviation, which assigns responsibility for the continuing airworthiness of aircraft to the State of Design and the State of Registry.

Scope and Application

The Civil Aviation Safety Regulations 1998, specifically under regulation 39.001, empowers the Civil Aviation Safety Authority (CASA) to issue airworthiness directives (ADs) for particular kinds of aircraft or aeronautical products. This regulatory measure applies to entities such as aircraft manufacturers, operators, and maintenance organisations within Australia, with the ultimate aim of ensuring the safety of air navigation. Geographically, this legislation applies nationwide as CASA operates under the Commonwealth jurisdiction. The ADs are legislative instruments that fall under the disallowable instruments category, as outlined in the Acts Interpretation Act 1901 and the Legislative Instruments Act 2003. ADs are a crucial component of maintaining continuing airworthiness of aircraft as per Annex 8 of the Convention on International Civil Aviation, and they are issued by most ICAO Contracting States, including Australia. The State of Registry for an individual aircraft, in this case, CASA, is responsible for ensuring the aircraft’s continuing airworthiness. Consequently, when a State of Design issues an AD against a type of aircraft registered in Australia, CASA must review the information and issue an Australian AD if appropriate. The AD cancellation for Gulfstream AA-5A and AA-5B model aircraft, as detailed in AD/AA-5/25, was issued by CASA and became effective on 4 June 2009, with no replacement AD required as the unsafe condition no longer exists.

Key Provisions

The Civil Aviation Act 1988, in conjunction with the Civil Aviation Safety Regulations 1998, establishes a framework for the issuance of airworthiness directives (ADs) by the Civil Aviation Safety Authority (CASA). Specifically, section 98 of the Act allows the Governor-General to make regulations for the safety of air navigation, while regulation 39.001 of the Civil Aviation Safety Regulations 1998 grants CASA the authority to issue ADs for specific types of aircraft or aeronautical products. These ADs are considered legislative instruments under section 46A of the Acts Interpretation Act 1901 and section 6 of the Legislative Instruments Act 2003. Importantly, subregulation 39.001(5) specifies that an AD is a disallowable instrument, subject to parliamentary scrutiny. Under the obligations imposed by the Act and Regulations, CASA, as Australia’s national airworthiness authority, is mandated to assess information provided by the State of Design and, if necessary, issue Australian ADs to ensure compliance with international standards for the continuing airworthiness of aircraft. This includes the responsibility of the State of Registry to develop or adopt requirements for ensuring the continuing airworthiness of aircraft within its jurisdiction. This obligation was recently demonstrated in the case of AD/AA-5/25, which affected Gulfstream AA-5A and AA-5B model aircraft. CASA assessed the AD and subsequently cancelled it, effective from 4 June 2009, as the unsafe condition identified in the original AD no longer existed, thus no replacement AD was required. The issuance and cancellation of ADs are closely aligned with Australia's international obligations under the Convention on International Civil Aviation, specifically Annex 8, which assigns the State of Design the responsibility for the continuing airworthiness of an aircraft type and mandates the provision of necessary information to States of Registry. The State of Registry, in turn, must ensure the continuing airworthiness of individual aircraft. In line with these obligations, CASA has exercised its authority to cancel AD/AA-5/25 without public consultation, as it was deemed unnecessary under the Office of Best Practice Regulation’s guidelines, which do not require a Regulatory Impact Statement for ADs. The Manager, Airframes and Structures, within the Airworthiness Engineering Group at CASA, issued this cancellation in accordance with subsection 84A(2) of the Act. The failure to comply with ADs can lead to significant legal and safety repercussions. Under the Civil Aviation Act 1988, non-compliance with ADs can result in both civil and criminal penalties. For instance, operators found in breach of ADs may face substantial fines and potential imprisonment for more serious offences. The specific penalties can vary depending on the severity and nature of the breach, but they are designed to enforce strict adherence to safety standards to maintain the integrity and safety of air navigation.