AD/B747/352 - Overlapped Skin Panels in the Fuselage Skin Lap Joints

Overview

The Civil Aviation Act 1988, enacted by the Parliament of Australia, was introduced to provide a comprehensive legal framework for the regulation of civil aviation in Australia. The Act seeks to ensure the safety and efficiency of civil aviation operations and to protect the public from the risks associated with civil aviation activities. In line with this objective, the Civil Aviation Safety Regulations 1998 were established to detail specific safety standards and requirements for aircraft, personnel, and operations. The Act empowers the Civil Aviation Safety Authority (CASA) to issue airworthiness directives (ADs) as a means to address safety concerns related to specific types of aircraft or aeronautical products, thereby ensuring compliance with international safety standards as stipulated in the Convention on International Civil Aviation. In accordance with the legislative framework provided by the Civil Aviation Act 1988 and the Civil Aviation Safety Regulations 1998, CASA has issued an airworthiness directive concerning Boeing B747 model aircraft, following an equivalent directive by the United States Federal Aviation Administration. This directive, AD/B747/352, mandates specific requirements for the continuing airworthiness of this aircraft type registered in Australia. The directive was issued without public consultation due to Australia's obligations under the Convention on International Civil Aviation and the need to respond to the State of Design's directive. The issuance of this AD exemplifies CASA's role in enforcing international safety standards to ensure the safe operation of aircraft within Australia.

Scope and Application

The Civil Aviation Act 1988, specifically through regulation 39.001 of the Civil Aviation Safety Regulations 1998, empowers CASA to issue airworthiness directives (ADs) for specific kinds of aircraft or aeronautical products. These ADs, as legislative instruments, are integral to ensuring the safety of air navigation and the continuing airworthiness of aircraft registered in Australia. The ADs are typically issued in response to obligations under the Convention on International Civil Aviation and are aligned with directives issued by the State of Design. In the case of the Boeing B747 model aircraft, CASA has issued Australian AD/B747/352 following an AD from the US FAA, the State of Design for this aircraft type. This directive will become effective on 21 December 2006. The process does not involve public consultation due to the nature of international obligations and the immediate necessity to ensure safety. Furthermore, ADs are not subject to a Regulatory Impact Statement, as determined by the Office of Regulatory Review. The AD is issued by the Manager, Airframes within CASA's Manufacturing, Certification and New Technologies Office, in accordance with the Act.

Key Provisions

The Civil Aviation Safety Regulations 1998 under section 39.001 provide that the Civil Aviation Safety Authority (CASA) has the power to issue airworthiness directives (ADs) for certain types of aircraft or aeronautical products. An AD, as clarified under subregulation 39.001(5), is considered a disallowable instrument according to section 46A of the Acts Interpretation Act 1901 and is categorised as a legislative instrument under section 6 of the Legislative Instruments Act 2003. These directives are integral to maintaining the continuing airworthiness of aircraft and are typically issued by States of Design as per Annex 8 to the Convention on International Civil Aviation. In the event that an AD is issued by a State of Design, such as the US Federal Aviation Administration (FAA) for Boeing B747 model aircraft, CASA is mandated to evaluate this information and, if necessary, issue a corresponding Australian AD to enforce the design state’s requirements. Entities governed by these regulations, including CASA and the State of Registry for individual aircraft, bear specific obligations to ensure airworthiness. The State of Design is responsible for providing necessary information to maintain the airworthiness of an aircraft type, while the State of Registry must implement or adopt requisite measures to ensure the continuing airworthiness of aircraft registered within its jurisdiction. When CASA issues an Australian AD, it must act in accordance with the requirements set out in section 84A(2) of the Civil Aviation Act 1988. These obligations extend to ensuring that any AD issued is consistent with international standards and practices as stipulated by the Convention on International Civil Aviation. The legislation outlines potential consequences for non-compliance with airworthiness directives. While specific offences, penalties, or civil and criminal consequences for breach of ADs are not detailed in the provided text, it is implied that failure to comply with these directives could lead to significant safety risks and potential regulatory action. Given the critical nature of airworthiness directives in maintaining aviation safety, non-compliance could result in severe penalties, including fines and potential grounding of non-compliant aircraft. The exact penalties would be determined by CASA in accordance with the regulatory framework and applicable aviation laws.