AD/B747/345 Amdt 1 - Body Station 1480 Longeron Extension Fittings

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Legislation au F2008L00597 In force Legislative Instrument

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CIVIL AVIATION ACT 1988

CIVIL AVIATION SAFETY REGULATIONS 1998

ISSUE OF AIRWORTHINESS DIRECTIVE

Under section 98 of the Civil Aviation Act 1988, the Governor-General may make regulations for the purposes of the Act and in the interests of the safety of air navigation.  Under regulation 39.001 of the Civil Aviation Safety Regulations 1998, CASA may issue airworthiness directives (ADs) for kinds of aircraft or aeronautical products.  Subregulation 39.001(5) of the Civil Aviation Safety Regulations 1998 provides that an AD is a disallowable instrument for the purposes of section 46A of the Acts Interpretation Act 1901. Therefore, in accordance with section 6 of the Legislative Instruments Act 2003, an AD is a legislative instrument.

Under Annex 8 to the Convention on International Civil Aviation, the State of Design has overall responsibility for continuing airworthiness of an aircraft type, and must provide any information necessary to ensure the continuing airworthiness of a type to appropriate States of Registry.  ADs (and their equivalents) are the most common form of continuing airworthiness information, and are issued by most ICAO Contracting States.

The State of Registry of an individual aircraft is responsible for its continuing airworthiness.  Under Annex 8, the State of Registry must develop or adopt requirements to ensure the continuing airworthiness of aircraft.  When a State of Design issues an AD against a type of aircraft on the Australian Register, CASA, as Australia’s national airworthiness authority, must assess that information and, if appropriate, issue an Australian AD to mandate the requirements of the State of Design.

The US FAA has issued AD 2007-26-17 affecting Boeing B747 model aircraft.  The USA is the State of Design for this type.  CASA has assessed this AD and has issued Australian AD/B747/345, Amendment 1, which will become effective on 13 March 2008.  This AD cancels and replaces the previous issue.

As this AD is issued because of Australia’s obligations under Convention on International Civil Aviation, and because it is issued in response to an AD raised by the relevant State of Design, no consultation of the Australian public has taken place on this AD.  The Office of Best Practice Regulation has determined that ADs do not require a Regulatory Impact Statement.

The AD has been made by the Manager, Airframes in the Airworthiness Engineering Branch, on behalf of CASA, in accordance with subsection 84A (2) of the Act.

Overview

The Civil Aviation Act 1988 was enacted to provide a comprehensive legal framework for the regulation of civil aviation in Australia, addressing the need for safety, efficiency, and orderly development of air transport services. The Act was introduced by the Australian Parliament to ensure that civil aviation in Australia meets international standards and practices, thereby safeguarding public safety and facilitating the safe and efficient operation of aircraft within Australian airspace. The Civil Aviation Safety Regulations 1998 further detail the implementation of the Act, particularly focusing on the issuance of airworthiness directives (ADs) by the Civil Aviation Safety Authority (CASA). This regulatory mechanism ensures that aircraft and aeronautical products meet required safety standards, with CASA mandated to issue such directives based on international conventions and standards, such as Annex 8 to the Convention on International Civil Aviation. The objective is to maintain and enhance the safety of air navigation by ensuring aircraft are airworthy and compliant with established safety regulations.

Scope and Application

The Civil Aviation Act 1988 and the Civil Aviation Safety Regulations 1998 establish the legal framework for the issuance of airworthiness directives (ADs) in Australia, ensuring the safety of air navigation. These regulations empower the Civil Aviation Safety Authority (CASA) to issue ADs for specific types of aircraft or aeronautical products, thereby mandating safety requirements derived from international standards, specifically those outlined in Annex 8 to the Convention on International Civil Aviation. The ADs serve as legislative instruments and are subject to disallowance under the Acts Interpretation Act 1901. Australia’s obligations under the Convention necessitate the issuance of ADs in response to directives from the State of Design, with CASA assuming the role of the State of Registry. This ensures the continuing airworthiness of aircraft registered in Australia. In this instance, CASA has assessed an AD issued by the US Federal Aviation Administration concerning Boeing B747 aircraft, resulting in the issuance of Australian AD/B747/345, Amendment 1. Given the international nature and the direct response to a State of Design requirement, there was no public consultation or need for a Regulatory Impact Statement for this AD, which was drafted by CASA in accordance with the Civil Aviation Act 1988.

Key Provisions

The Civil Aviation Safety Regulations 1998, particularly regulation 39.001, empower the Civil Aviation Safety Authority (CASA) to issue airworthiness directives (ADs) for specific types of aircraft or aeronautical products (section 39.001(5)). These ADs, as legislative instruments, are designed to ensure the safety of air navigation as outlined in section 98 of the Civil Aviation Act 1988. An AD is a formal instruction issued by CASA to ensure that certain aircraft meet specific airworthiness standards, often in response to safety concerns identified by the aircraft's State of Design. Under the Civil Aviation Safety Regulations 1998, the State of Design, which is the country responsible for designing the aircraft, has the primary responsibility for the continuing airworthiness of that aircraft type. This responsibility includes providing necessary information to the States of Registry, which are the countries where the aircraft are registered. CASA, as Australia’s national airworthiness authority, must assess this information and issue corresponding ADs for Australian-registered aircraft. In the case of the Boeing B747 model, the United States is the State of Design, and CASA has issued AD/B747/345, Amendment 1, effective from 13 March 2008, to align with international standards. Compliance with these ADs is mandatory for all operators of affected aircraft. These regulations require aircraft operators to follow the ADs’ specifications, including any inspections, repairs, or modifications, to maintain the airworthiness of their aircraft. Failure to comply with an AD can result in severe consequences, including grounding of the aircraft until the required actions are taken. CASA has the authority to enforce these regulations, and non-compliance can lead to significant penalties or legal action. In terms of sanctions, the Civil Aviation Safety Regulations 1998 outline that non-compliance with an AD can result in substantial penalties. These penalties may include fines, suspension of the aircraft's certificate of airworthiness, and potential criminal charges for serious violations. The specific penalties are detailed within the regulations and can vary based on the severity and circumstances of the non-compliance. Additionally, operators must maintain records of compliance and may be subject to audits by CASA to ensure adherence to the ADs.

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Sourced from the Federal Register of Legislation at 26 August 2026. For the latest information on Australian Government law please go to https://www.legislation.gov.au.