AD/B737/239 Amdt 1 - Engine Fuel Feed System Electrical Bonding

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Legislation au F2005L03970 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 United States FAA issued AD 2005-04-01 affecting Boeing 737 series aircraft, in February 2005.  The United States is the State of Design for these types.  As a result of a request from industry, CASA has amended the equivalent Australian AD to allow compliance in accordance with future issues of applicable Boeing Service Bulletins which have been approved by the FAA as alternate methods of compliance.  The amended AD, AD/B737/239, Amendment 1, will become effective on 19 January 2006.  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, New Technologies and Systems, 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 ensure the safety and efficiency of civil aviation in Australia. The Act provides the legal framework for regulating various aspects of civil aviation, including the issuance of airworthiness directives (ADs) to maintain the airworthiness of aircraft. In 1998, the Civil Aviation Safety Regulations were introduced to further detail the requirements for airworthiness and the procedures for issuing ADs. The 1988 Act empowers the Governor-General to make regulations that serve the interests of air navigation safety, and under regulation 39.001 of the 1998 Regulations, the Civil Aviation Safety Authority (CASA) can issue ADs for specific types of aircraft or aeronautical products. These directives are essential for ensuring that aircraft remain airworthy throughout their operational lives, aligning with international standards set by the Convention on International Civil Aviation. The authority to issue such directives is exercised in accordance with Australia's obligations under international agreements and to maintain the safety standards within the Australian aviation sector.

Scope and Application

The Civil Aviation Act 1988 and the Civil Aviation Safety Regulations 1998 together establish a framework for ensuring the safety of air navigation, with particular emphasis on the continuing airworthiness of aircraft. The Act allows the Governor-General to make regulations for the safety of air navigation, and under regulation 39.001 of the Civil Aviation Safety Regulations, the Civil Aviation Safety Authority (CASA) is authorised to issue airworthiness directives (ADs) for specific types of aircraft or aeronautical products. These ADs are legislative instruments, subject to disallowance and review under the Acts Interpretation Act 1901 and the Legislative Instruments Act 2003 respectively. The ADs are designed to align with international standards set by the International Civil Aviation Organization (ICAO), particularly those outlined in Annex 8 to the Convention on International Civil Aviation, which places the responsibility for continuing airworthiness on the State of Design and the State of Registry. In practice, this means that CASA, as Australia’s national airworthiness authority, must issue corresponding ADs in response to directives from the relevant State of Design, such as the United States in the case of Boeing 737 aircraft. The application of these ADs is mandatory for the specified aircraft types registered in Australia, and they do not require public consultation as they are issued in compliance with international obligations.

Key Provisions

The main operative sections of the Civil Aviation Act 1988, particularly as they pertain to the issuance of airworthiness directives, are found in section 98, which allows the Governor-General to make regulations for the safety of air navigation, and regulation 39.001 of the Civil Aviation Safety Regulations 1998, which empowers the Civil Aviation Safety Authority (CASA) to issue airworthiness directives for specific types of aircraft or aeronautical products. Under subregulation 39.001(5), these directives are classified as disallowable instruments under section 46A of the Acts Interpretation Act 1901, and thus are legislative instruments as per section 6 of the Legislative Instruments Act 2003. This regulatory framework ensures that directives issued by CASA are authoritative and binding within Australia's aviation sector. The obligations imposed on parties by the Civil Aviation Act 1988 and the Civil Aviation Safety Regulations 1998 primarily focus on ensuring the continuing airworthiness of aircraft. According to Annex 8 of the Convention on International Civil Aviation, the State of Design is responsible for the overall airworthiness of an aircraft type and must provide necessary information to the States of Registry to maintain airworthiness. The State of Registry, in this case CASA, must then assess this information and issue appropriate airworthiness directives to ensure compliance with safety standards. Additionally, CASA is tasked with the responsibility of ensuring that Australian aircraft meet international standards and recommendations, particularly when directives are issued by foreign aviation authorities, such as the United States Federal Aviation Administration (FAA) in the case of Boeing 737 series aircraft. The Act and its accompanying regulations do not explicitly detail specific offences or penalties for non-compliance with airworthiness directives. However, the issuance and enforcement of these directives carry significant civil and criminal consequences. Failure to comply with an airworthiness directive can result in severe penalties, including fines and imprisonment, as these directives are integral to maintaining the safety and airworthiness of aircraft. The gravity of non-compliance underscores the importance of adhering to these directives, as they are designed to prevent accidents and ensure the safety of all passengers and crew on board. While the Act does not prescribe maximum penalties within the specific context of airworthiness directives, the overarching legal framework within which these directives operate allows for stringent enforcement measures. The potential consequences of non-compliance highlight the seriousness with which regulatory authorities treat adherence to airworthiness standards. CASA, as the national airworthiness authority, has the mandate and responsibility to enforce these directives, ensuring that all aircraft operating within Australian airspace meet the necessary safety 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.