AD/CESSNA 320/6 - Nose Gear Uplock Torque Tube - Replacement - CANCELLED

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Legislation au F2008L01226 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 Civil Aviation Safety Authority or its predecessors issued AD/CESSNA 320/6 affecting Cessna 320 aircraft.  CASA has assessed this AD and as a result has cancelled Australian AD/CESSNA 320/6.  The cancellation will become effective on 8 May 2008.  No replacement AD is required, as the unsafe condition no longer exists.

As this AD has been cancelled because of Australia’s obligations under the Convention on International Civil Aviation, no consultation with the Australian public has taken place on this AD cancellation.  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 and New Technologies 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 provide for the regulation of civil aviation in Australia, with a strong emphasis on safety. The Act grants the Governor-General the authority to make regulations for the safety of air navigation, including the issuance of airworthiness directives (ADs) through regulation 39.001 of the Civil Aviation Safety Regulations 1998. This regulatory framework aims to ensure that aircraft and aeronautical products meet the necessary safety standards. The Civil Aviation Safety Authority (CASA), as Australia's national airworthiness authority, plays a crucial role in assessing and issuing ADs, particularly when they are issued by the State of Design for aircraft types on the Australian Register. The recent cancellation of Australian AD/CESSNA 320/6 for Cessna 320 aircraft reflects the dynamic nature of aviation safety regulation, where directives are issued, assessed, and potentially cancelled based on the evolving safety landscape. The cancellation of this particular AD, effective from 8 May 2008, was made in accordance with the legislative framework provided by the Civil Aviation Act 1988 and does not require public consultation or a Regulatory Impact Statement.

Scope and Application

The Civil Aviation Safety Regulations 1998, under section 39.001, empower the Civil Aviation Safety Authority (CASA) to issue airworthiness directives (ADs) for specific kinds of aircraft or aeronautical products in accordance with section 98 of the Civil Aviation Act 1988. These directives are legislative instruments, subject to disallowance under section 46A of the Acts Interpretation Act 1901, and must adhere to the provisions of the Legislative Instruments Act 2003. The ADs serve as a critical mechanism for ensuring the continuing airworthiness of aircraft types, mandated by Annex 8 of the Convention on International Civil Aviation, which assigns the State of Design the responsibility for providing necessary information to the States of Registry. In Australia, CASA, as the national airworthiness authority, assesses this information and may issue Australian ADs to enforce the requirements of the State of Design. This process ensures compliance with international standards and maintains the safety of air navigation. The application of these regulations extends to all aircraft registered in Australia, and their enforcement is critical in maintaining the safety standards required by both national and international aviation authorities.

Key Provisions

The Civil Aviation Act 1988, under section 98, allows the Governor-General to create regulations for the Act's purposes, particularly for the safety of air navigation. This provision enables the creation of specific guidelines and rules to ensure that aviation remains safe and efficient. 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 directives are critical tools for maintaining the safety and airworthiness of aircraft. According to subregulation 39.001(5), ADs are considered 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. The obligations under the Civil Aviation Act 1988 and the Civil Aviation Safety Regulations 1998 are significant for both the State of Design and the State of Registry of an aircraft. The State of Design, which is responsible for the initial airworthiness of an aircraft type, must provide necessary information to the State of Registry to ensure continuing airworthiness. The State of Registry is then responsible for ensuring that the aircraft remains airworthy and must develop or adopt requirements to maintain this status. In the case of Australia, CASA, as the national airworthiness authority, is tasked with assessing information from the State of Design and issuing Australian ADs when necessary. This collaborative effort between the design and registry states is essential for maintaining global aviation safety standards, as outlined in Annex 8 to the Convention on International Civil Aviation. The Civil Aviation Safety Regulations 1998 also impose obligations on CASA to cancel ADs when the unsafe conditions they address no longer exist. This was the case with AD/CESSNA 320/6, which affected Cessna 320 aircraft. CASA assessed the AD and determined that the unsafe condition no longer existed, leading to the cancellation of the AD effective 8 May 2008. This cancellation was made in accordance with Australia's obligations under the Convention on International Civil Aviation, and no public consultation or Regulatory Impact Statement was required. The AD was cancelled by the Acting Manager, Systems and New Technologies in the Airworthiness Engineering Branch, on behalf of CASA, in compliance with subsection 84A(2) of the Act. Failure to comply with the requirements set forth in the Civil Aviation Act 1988 and the Civil Aviation Safety Regulations 1998 can result in significant penalties. While the specific penalties are not detailed in the provided text, it is clear that the Act and Regulations impose stringent obligations on all parties to ensure the safety and airworthiness of aircraft. Violation of these obligations could lead to civil or criminal consequences, including fines and imprisonment, depending on the severity of the breach. The exact penalties would be determined based on the specific provisions of the Act and any relevant case law.

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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.