AD/AC/101 - Fuel Filler Openings

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Legislation au F2007L04546 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 US FAA has issued AD 87-21-07 R1 affecting Aerocommander 500, 600 and 700 series aircraft.  The USA is the State of Design for this type.  CASA has assessed this AD and has issued Australian AD/AC/101, which will become effective on 20 December 2007. 

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 Acting Manager, Systems 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 regulate civil aviation in Australia with a focus on ensuring the safety of air navigation. As per section 98 of this Act, the Governor-General has the authority to establish regulations that serve the interests of aviation safety, and this includes the delegation of power to the Civil Aviation Safety Authority (CASA) to issue airworthiness directives (ADs) concerning types of aircraft or aeronautical products, as stipulated in regulation 39.001 of the Civil Aviation Safety Regulations 1998. These directives are considered legislative instruments under the Legislative Instruments Act 2003 and serve as a critical mechanism for maintaining the continuing airworthiness of aircraft. The objective of these regulations is to ensure compliance with the international standards set by the Convention on International Civil Aviation, particularly Annex 8, which assigns the State of Design with the responsibility for the ongoing airworthiness of aircraft types, and the State of Registry with the obligation to implement the necessary requirements for individual aircraft.

Scope and Application

The Civil Aviation Act 1988 and the Civil Aviation Safety Regulations 1998 establish the framework for airworthiness directives in Australia, which are regulatory measures designed to ensure the ongoing safety and airworthiness of aircraft. According to section 98 of the Civil Aviation Act 1988, the Governor-General has the authority to make regulations to enhance the safety of air navigation, and regulation 39.001 of the Civil Aviation Safety Regulations 1998 specifically empowers the Civil Aviation Safety Authority (CASA) to issue airworthiness directives for certain types of aircraft or aeronautical products. These directives are legislative instruments under the Legislative Instruments Act 2003, as they are disallowable instruments under section 46A of the Acts Interpretation Act 1901. The responsibility for the continuing airworthiness of an aircraft type lies with the State of Design, as outlined in Annex 8 to the Convention on International Civil Aviation, which necessitates that such states provide necessary information to ensure airworthiness. In Australia, CASA, as the national airworthiness authority, assesses information from the State of Design and, if appropriate, issues Australian airworthiness directives to enforce the requirements of the original directive. This process ensures compliance with international obligations and maintains the high safety standards necessary for the operation of aircraft within Australia.

Key Provisions

The Civil Aviation Act 1988, under section 98, empowers the Governor-General to create regulations that align with the Act and prioritise air navigation safety. This authority is exercised by the Civil Aviation Safety Authority (CASA) through regulation 39.001 of the Civil Aviation Safety Regulations 1998, allowing them to issue airworthiness directives (ADs) for specific types of aircraft or aeronautical products. Section 39.001(5) of these regulations confirms that ADs are disallowable instruments as per section 46A of the Acts Interpretation Act 1901, and therefore constitute legislative instruments under section 6 of the Legislative Instruments Act 2003. Under the requirements set forth by Annex 8 of the Convention on International Civil Aviation, the State of Design holds overarching responsibility for the ongoing airworthiness of an aircraft type, and is mandated to supply any necessary information to ensure this airworthiness to the relevant States of Registry. Airworthiness directives are the primary means by which such information is disseminated, and are issued by most ICAO Contracting States. The State of Registry is responsible for ensuring the continuing airworthiness of individual aircraft. In line with Annex 8, the State of Registry must establish or adopt measures to ensure the ongoing airworthiness of aircraft. When a State of Design issues an AD against a type of aircraft registered in Australia, CASA must evaluate this information and, if deemed appropriate, issue an Australian AD to enforce the requirements stipulated by the State of Design. The obligations imposed by the Act and the associated regulations on the parties governed by them primarily focus on ensuring the safety and airworthiness of aircraft. CASA is required to assess and, if necessary, mandate airworthiness directives issued by the States of Design for aircraft types registered in Australia. This ensures that all aircraft operating in Australia meet the necessary safety standards and regulatory requirements. The ADs issued under this process are legally binding and must be adhered to by the operators of the affected aircraft. In terms of consequences for non-compliance, while the specific offences, penalties, or civil/criminal consequences for breaching the provisions of the ADs are not detailed in the provided text, it is generally understood that failure to comply with ADs can result in serious safety risks. Non-compliance with ADs can lead to aircraft being grounded or restricted from operation until the required actions are taken. Furthermore, in broader legal contexts, non-compliance with aviation regulations can result in substantial penalties, including fines and potential criminal charges, depending on the severity and impact of the breach. The regulatory framework ensures that adherence to ADs is strictly enforced to maintain the highest standards of aviation safety.

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Aviation Law
Instrument
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Reporting & Disclosure Obligations
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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.