AD/B737/217 Amdt 1 - Reinforced Flight Deck Door Decompression Panel

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Legislation au F2005L02823 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 2005-12-05 affecting Boeing 737 model aircraft.  The USA is the State of Design for this type.  CASA has assessed this AD and has issued Australian AD/B737/217, Amendment 1, which will become effective on 27 October 2005.  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 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 regulate civil aviation in Australia with the primary objective of ensuring the safety of air navigation. The Act empowers the Governor-General to make regulations in the interests of safety, including the issuance of airworthiness directives (ADs) as per regulation 39.001 of the Civil Aviation Safety Regulations 1998. These ADs serve as legislative instruments under section 6 of the Legislative Instruments Act 2003 and aim to ensure the continuing airworthiness of aircraft, aligning with Australia's obligations under the Convention on International Civil Aviation. The Civil Aviation Safety Authority (CASA) issues these directives when necessary, such as in response to directives from the State of Design, which, in this case, was the United States for Boeing 737 aircraft. The ADs do not require public consultation or a Regulatory Impact Statement, as determined by the Office of Regulatory Review, and are issued by CASA to comply with international standards and maintain the safety of air navigation within Australia.

Scope and Application

The Civil Aviation Act 1988, complemented by the Civil Aviation Safety Regulations 1998, provides the legislative framework under which airworthiness directives (ADs) can be issued to ensure the safety of air navigation. Specifically, regulation 39.001 of the Civil Aviation Safety Regulations 1998 empowers the Civil Aviation Safety Authority (CASA) to issue ADs for certain types of aircraft or aeronautical products. These directives, which are legislative instruments under the Legislative Instruments Act 2003, play a crucial role in maintaining the continuing airworthiness of aircraft, aligning with international standards as outlined in Annex 8 of the Convention on International Civil Aviation. The ADs are issued by CASA in response to directives from the State of Design or as a result of domestic safety assessments. The geographic reach of these regulations encompasses all aircraft registered within Australia, ensuring compliance with both national and international aviation safety standards. While ADs are integral to maintaining airworthiness, they are issued without public consultation and do not require a Regulatory Impact Statement, reflecting their technical nature and the urgency often associated with aviation safety mandates.

Key Provisions

The Civil Aviation Act 1988 and the Civil Aviation Safety Regulations 1998 provide a framework for the issuance of airworthiness directives (ADs). Under section 98 of the Civil Aviation Act 1988, the Governor-General has the authority to create regulations aimed at ensuring the safety of air navigation. Regulation 39.001 of the Civil Aviation Safety Regulations 1998 empowers the Civil Aviation Safety Authority (CASA) to issue ADs for specific types of aircraft or aeronautical products. This regulatory power is exercised to maintain and enhance the safety standards within the aviation industry, ensuring that aircraft remain in a condition that allows for safe operation. Furthermore, subregulation 39.001(5) of the Civil Aviation Safety Regulations 1998 classifies an AD as a disallowable instrument under section 46A of the Acts Interpretation Act 1901, thereby recognising it as a legislative instrument. The obligations imposed by this Act and its regulations are significant for both CASA and the State of Registry of individual aircraft. CASA, as Australia’s national airworthiness authority, must assess information provided by the State of Design when an AD is issued. If deemed necessary, CASA must then issue an Australian AD to ensure the compliance of aircraft registered in Australia with the AD's requirements. The State of Registry is also obligated to develop or adopt requirements that ensure the continuing airworthiness of aircraft under its jurisdiction. This collaborative approach between the State of Design and the State of Registry ensures that the safety and airworthiness of aircraft are maintained globally, aligning with the principles outlined in Annex 8 to the Convention on International Civil Aviation. Failure to comply with the provisions of an AD can result in serious legal consequences. Under the Civil Aviation Act 1988, any person who contravenes an AD commits an offence. The Act specifies that such an offence is punishable by a fine of up to 120 penalty units or by imprisonment for up to six months, or both, for an individual offender. For corporate entities, the maximum penalty can escalate to 600 penalty units, reflecting the severity of non-compliance with aviation safety regulations. These penalties underscore the importance of adhering to ADs to ensure the highest standards of aviation safety are maintained. In summary, the Civil Aviation Act 1988 and the Civil Aviation Safety Regulations 1998 provide a comprehensive framework for the issuance and enforcement of ADs. CASA has the authority to issue ADs based on assessments of international directives and national safety requirements. Both CASA and the State of Registry have specific obligations to ensure that aircraft remain airworthy. Non-compliance with ADs is a serious offence, with significant penalties for individuals and corporations alike, reinforcing the critical importance of adhering to these safety measures.

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Aviation Law
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Regulatory Standards
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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.