AD/B737/86 Amdt 1 - Body Station 344 to 360 Support Structure

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Legislation au F2005L00071 In force Legislative Instrument

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CIVIL AVIATION ACT 1988

CIVIL AVIATION 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.  An AD is a disallowable instrument under section 46A of the Acts Interpretation Act 1901.

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 2004-23-07 affecting Boeing B737-100, B737-200, B737-300 and B737-400 aircraft.  US is the State of Design for this type.  CASA has assessed this AD and has issued Australian AD/B737/86 Amdt 1, which will become effective on 17 February 2005. 

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 Acting Section Head – Airframes, Airworthiness Standards Branch, Standards Division, on behalf of CASA, in accordance with subsection 84A (2) of the Act.

Overview

The Civil Aviation Act 1988 was enacted to provide a framework for the regulation of civil aviation in Australia, ensuring the safety and efficiency of air navigation within the country. This legislation empowers the Governor-General to make regulations that safeguard air navigation and mandates the Civil Aviation Safety Authority (CASA) to oversee the implementation of these regulations. CASA's role includes issuing airworthiness directives (ADs) as stipulated under regulation 39.001 of the Civil Aviation Safety Regulations 1998. These ADs are issued in response to international obligations, particularly those outlined in Annex 8 to the Convention on International Civil Aviation, which delineates the responsibilities of the State of Design in ensuring an aircraft type's continuing airworthiness and the corresponding duties of the States of Registry. The issuance of ADs is crucial for maintaining the safety standards of aircraft registered in Australia and aligns with international practices.

Scope and Application

The Civil Aviation Act 1988, as amended by the Civil Aviation Regulations 1998, provides the legislative framework for ensuring the safety of air navigation in Australia. Specifically, under section 98 of the Act, the Governor-General has the authority to issue regulations that safeguard the safety of air navigation. Regulation 39.001 of the Civil Aviation Safety Regulations 1998 empowers the Civil Aviation Safety Authority (CASA) to issue airworthiness directives (ADs) for specific types of aircraft or aeronautical products. These ADs, being disallowable instruments, are subject to scrutiny under section 46A of the Acts Interpretation Act 1901. The legislation applies to entities and individuals involved in the design, registration, and operation of aircraft within Australia, and it extends to ensuring compliance with international standards as outlined in Annex 8 to the Convention on International Civil Aviation. The ADs issued by CASA are binding and must be adhered to by the relevant aircraft operators and owners. The ADs are not subject to public consultation or a Regulatory Impact Statement, as they are issued in response to international obligations and specific safety concerns identified by the State of Design.

Key Provisions

The Civil Aviation Act 1988, supplemented by the Civil Aviation Regulations 1998, provides the legislative framework for the issuance of airworthiness directives (ADs) in Australia. Under section 98 of the Act, the Governor-General has the authority to create regulations that serve the interests of air navigation safety. Regulation 39.001 of the Civil Aviation Safety Regulations 1998 specifically empowers the Civil Aviation Safety Authority (CASA) to issue ADs for certain types of aircraft or aeronautical products. These ADs are considered disallowable instruments under section 46A of the Acts Interpretation Act 1901. In the context of international obligations, the State of Design, which in this case is the United States, bears the responsibility for the continuing airworthiness of the aircraft type and must provide necessary information to the States of Registry, including Australia. Compliance with the ADs is crucial for maintaining the safety standards of the aircraft. The ADs serve as a critical tool for the State of Registry to ensure that the aircraft remain airworthy. Specifically, CASA, as Australia’s national airworthiness authority, must review the ADs issued by the State of Design and, where necessary, issue corresponding Australian ADs to enforce the required safety measures. This ensures that all aircraft registered in Australia meet the continuing airworthiness standards as mandated by international aviation conventions. In terms of specific obligations, the Civil Aviation Regulations 1998 require CASA to act promptly upon receiving ADs from the State of Design. CASA must assess the relevance and necessity of the ADs and, if deemed appropriate, issue Australian ADs to enforce the requirements on all affected aircraft registered in Australia. The regulations ensure that there is a systematic and coordinated approach to maintaining the airworthiness of aircraft across different jurisdictions. Breaches of the airworthiness directives can lead to significant legal and safety consequences. While the Civil Aviation Act 1988 does not explicitly outline criminal or civil penalties for non-compliance with ADs, the broader regulatory framework imposes strict enforcement measures. Operators found to be in breach of the ADs may face severe consequences, including grounding of the aircraft, suspension or revocation of airworthiness certificates, and potential criminal charges if the breach results in a serious safety incident. These measures underscore the critical importance of adhering to the ADs to ensure the safety and compliance of aircraft operating within Australian jurisdiction.

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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.