AD/B737/281 - Fuselage Stringer 14 Lap Joint at Body Station 727

Administered by Department of Infrastructure, Transport, Regional Development, Communications, Sport and the Arts

Legislation au F2006L00728 Not 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 USA FAA has issued AD 89-22-04 affecting 737-100, 737-200 and 737-200C aircraft.  USA is the State of Design for this type.  CASA has assessed this AD and has issued Australian AD/B737/281, which will become effective on 13 April 2006. 

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 Regulatory Review has determined that ADs do not require a Regulatory Impact Statement.

The AD has been made by the Manager, Airframes, in the Manufacturing, Certification and New Technologies Office, 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 framework for civil aviation in Australia, focusing on the safety and efficiency of air navigation. It empowers the Governor-General to make regulations necessary for ensuring the safety of air navigation, including the issuance of airworthiness directives (ADs) by the Civil Aviation Safety Authority (CASA). The Civil Aviation Safety Regulations 1998 further detail the process by which CASA can issue ADs to ensure the continuing airworthiness of aircraft. These regulations align with the Convention on International Civil Aviation, which places the responsibility for the airworthiness of aircraft types on the State of Design and mandates that States of Registry implement corresponding measures. The policy objective of these regulations is to maintain and enhance the safety of air navigation by ensuring that aircraft meet the necessary safety standards. Under this legislative framework, CASA has issued AD/B737/281 in response to an AD from the United States Federal Aviation Administration (FAA) concerning Boeing 737-100, 737-200, and 737-200C aircraft. This AD, issued in accordance with the Civil Aviation Act and the Civil Aviation Safety Regulations, reflects Australia’s commitment to international aviation safety standards. Given that the AD is a direct response to international obligations and does not require public consultation, the Manager, Airframes, in CASA’s Manufacturing, Certification and New Technologies Office, has issued the directive under subsection 84A(2) of the Act.

Scope and Application

The Civil Aviation Safety Regulations 1998, under section 39.001, empower the Civil Aviation Safety Authority (CASA) to issue airworthiness directives (ADs) concerning specific types of aircraft or aeronautical products. These ADs are legislative instruments, disallowable under section 46A of the Acts Interpretation Act 1901, and their creation is authorised by section 98 of the Civil Aviation Act 1988. The scope of these regulations extends to all aircraft registered in Australia, thereby applying to aircraft owners, operators, and manufacturers within the Australian jurisdiction. This legislative framework is designed to ensure the continuing airworthiness of aircraft and aligns with international obligations under Annex 8 to the Convention on International Civil Aviation, which mandates that the State of Design retains responsibility for the airworthiness of an aircraft type. Consequently, CASA, as Australia’s national airworthiness authority, is required to assess and, if necessary, issue Australian ADs in response to directives issued by the aircraft’s State of Design, such as the USA in the case of the Boeing 737 series. The process does not necessitate public consultation or a Regulatory Impact Statement, as it directly pertains to fulfilling international obligations and ensuring compliance with established safety standards.

Key Provisions

The Civil Aviation (Safety) Regulations 1998, under regulation 39.001, empower the Civil Aviation Safety Authority (CASA) to issue airworthiness directives (ADs) for specific types of aircraft or aeronautical products. These directives are formal requirements intended to ensure the ongoing airworthiness of the specified aircraft, and they are issued in accordance with section 98 of the Civil Aviation Act 1988. An AD is considered a disallowable instrument under section 46A of the Acts Interpretation Act 1901, and it is classified as a legislative instrument in accordance with section 6 of the Legislative Instruments Act 2003. These provisions underscore the legislative authority and formal nature of ADs, which are critical for maintaining safety standards in civil aviation. The obligations imposed by the Civil Aviation (Safety) Regulations 1998 on the parties involved are significant. The State of Design, which is the country where the aircraft type is designed, holds the primary responsibility for ensuring the continuing airworthiness of that aircraft type. This responsibility includes providing necessary information to the States of Registry, which are the countries where individual aircraft are registered. The State of Registry, in turn, must develop or adopt requirements to ensure the continuing airworthiness of aircraft within its jurisdiction. In the case of Australia, CASA, as the national airworthiness authority, must assess any ADs issued by the State of Design and, if appropriate, issue corresponding Australian ADs to mandate the requirements. This collaborative effort between the State of Design and the State of Registry is vital for maintaining global aviation safety standards. Failure to comply with an AD can lead to serious consequences under the Civil Aviation Act 1988. The Act does not explicitly outline specific offences, penalties, or civil/criminal consequences for breaching an AD; however, non-compliance can result in enforcement actions by CASA. Such actions may include grounding the aircraft until the required compliance is achieved, fines, or even the revocation of the aircraft's certificate of airworthiness. The severity of the consequences often depends on the nature and extent of the non-compliance, as well as any resulting safety risks. While the specific penalties are not detailed in the provided text, the potential for significant regulatory and financial repercussions underscores the importance of adhering to ADs. In summary, the Civil Aviation (Safety) Regulations 1998 empower CASA to issue ADs to ensure the continuing airworthiness of specific aircraft types. These ADs are legally binding and form part of the legislative framework that governs aviation safety in Australia. The responsibilities are shared between the State of Design and the State of Registry, with CASA playing a critical role in issuing Australian ADs. Non-compliance with ADs can lead to serious regulatory and financial consequences, emphasising the necessity for adherence to these safety directives.

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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.