AD/AT 800/9 Amdt 3 - Engine Mount

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Legislation au F2009L02861 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 2009-11-05 affecting Air Tractor AT-802 model aircraft.  The USA is the State of Design for this type.  CASA has assessed this AD and has issued Australian AD/AT 800/9, Amendment 3, which will become effective on
30 July 2009.  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 Best Practice Regulation has determined that ADs do not require a Regulatory Impact Statement.

The AD has been made by the Manager, Airframes & Structures in the Airworthiness Engineering Group, on behalf of CASA, in accordance with subsection 84A (2) of the Act.

Overview

The Civil Aviation Act 1988 was enacted to provide a legislative framework governing civil aviation in Australia, ensuring safety and efficiency in the aviation industry. One of the key provisions of this Act is section 98, which empowers the Governor-General to make regulations necessary for the safety of air navigation. The Civil Aviation Safety Regulations 1998, promulgated under this Act, include regulation 39.001, which allows the Civil Aviation Safety Authority (CASA) to issue airworthiness directives (ADs) for specific types of aircraft or aeronautical products. The objective of these regulations is to maintain the highest safety standards in line with Australia's obligations under the Convention on International Civil Aviation, particularly concerning the continuing airworthiness of aircraft. In response to AD 2009-11-05 issued by the US Federal Aviation Administration (FAA) for Air Tractor AT-802 model aircraft, CASA has issued Australian AD/AT 800/9, Amendment 3, effective from 30 July 2009. This action underscores CASA's role as the national airworthiness authority, mandated to ensure the continuing airworthiness of aircraft registered in Australia. Given that this directive is a direct response to an international obligation and follows the AD from the State of Design, no public consultation was deemed necessary, and the Office of Best Practice Regulation confirmed that a Regulatory Impact Statement was not required. The AD was issued by the Manager, Airframes & Structures in the Airworthiness Engineering Group, on behalf of CASA, in accordance with subsection 84A(2) of the Civil Aviation Act 1988.

Scope and Application

The Civil Aviation Safety Regulations 1998, under section 39.001, authorise the Civil Aviation Safety Authority (CASA) to issue airworthiness directives (ADs) for specific kinds of aircraft or aeronautical products. These directives are legislative instruments, disallowable under section 46A of the Acts Interpretation Act 1901, and subject to the Legislative Instruments Act 2003. ADs are essential for ensuring the continuing airworthiness of aircraft types, as per Annex 8 to the Convention on International Civil Aviation, which mandates that the State of Design holds primary responsibility for an aircraft type’s airworthiness. In the case of aircraft registered in Australia, CASA, acting as the national airworthiness authority, must review and, if necessary, issue Australian ADs to enforce the requirements set by the State of Design. This process ensures compliance with international standards and maintains the safety of air navigation. ADs are issued in response to specific safety concerns and do not generally require public consultation or a Regulatory Impact Statement, as they are direct responses to international safety mandates.

Key Provisions

The Civil Aviation Safety Regulations 1998, under regulation 39.001, allow the Civil Aviation Safety Authority (CASA) to issue airworthiness directives (ADs) for specific types of aircraft or aeronautical products. These directives are designed to ensure the ongoing safety and airworthiness of aircraft in operation, and they are based on the obligations of the State of Design under Annex 8 to the Convention on International Civil Aviation. For example, CASA has issued Australian AD/AT 800/9, Amendment 3, in response to an AD issued by the US Federal Aviation Administration (FAA) concerning the Air Tractor AT-802 model aircraft. This Australian AD, which becomes effective on 30 July 2009, cancels and replaces the previous version, and it mandates the requirements set out by the US FAA for the maintenance and operation of the affected aircraft in Australia. The Civil Aviation Act 1988 and the Civil Aviation Safety Regulations 1998 impose certain obligations on parties and entities governed by these laws. For instance, the State of Design, such as the US in the case of the Air Tractor AT-802, is responsible for ensuring the continuing airworthiness of aircraft types it designs. This includes providing necessary information to States of Registry, such as Australia, to help maintain airworthiness. CASA, as Australia’s national airworthiness authority, must assess this information and, if appropriate, issue an Australian AD to enforce the requirements of the State of Design. Additionally, the State of Registry, in this case Australia, has the responsibility to develop or adopt requirements to ensure the continuing airworthiness of aircraft registered within its territory. These obligations ensure a coordinated approach to maintaining safety standards across international borders. In the event of non-compliance with the provisions of the Civil Aviation Act 1988 and the Civil Aviation Safety Regulations 1998, including failure to adhere to ADs, there are potential civil and criminal consequences. Civil penalties may include fines or other financial penalties, while criminal penalties could result in imprisonment, depending on the severity and intent of the breach. The specific penalties are not detailed in the provided text but are generally outlined in relevant sections of the Act and associated regulations. It is critical for operators and maintainers of affected aircraft to comply with ADs to avoid these potential legal repercussions and to ensure the continued safety of air navigation. The AD/AT 800/9, Amendment 3, was issued under the authority of the Civil Aviation Act 1988 and the Civil Aviation Safety Regulations 1998 by the Manager, Airframes & Structures in the Airworthiness Engineering Group on behalf of CASA. This action was taken in accordance with subsection 84A(2) of the Act, which provides CASA with the necessary legal basis to issue such directives. The ADs are considered legislative instruments under section 6 of the Legislative Instruments Act 2003, and they are issued without public consultation or the need for a Regulatory Impact Statement, as determined by the Office of Best Practice Regulation. This streamlined process ensures that safety directives can be issued promptly in response to identified safety issues without unnecessary delay.

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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.