AD/PA-23/74 - Stabilator Trim Control Rod to Tab Attachment - Inspection - CANCELLED

Administered by Department of Infrastructure, Transport, Regional Development, Communications, Sport and the Arts

Legislation au F2009L00138 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, the Civil Aviation Safety Authority (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.

CASA or its predecessors issued AD/PA-23/74 affecting Piper PA-23-250 aircraft.  CASA has reviewed this AD and as a result has cancelled it.  The cancellation will become effective on 12 February 2009.  No replacement AD is required.

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, Airframes and 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, enacted to regulate and ensure the safety of air navigation, empowers the Governor-General to create regulations, including the issuance of airworthiness directives (ADs) through the Civil Aviation Safety Regulations 1998. Under these regulations, the Civil Aviation Safety Authority (CASA) is authorised to issue ADs for specific types of aircraft or aeronautical products to maintain safety standards. The Act and its regulations are designed to align with the requirements of the Convention on International Civil Aviation, particularly concerning the responsibilities of the State of Design and the State of Registry for the continuing airworthiness of aircraft. As a legislative instrument, the AD is subject to disallowance and oversight by the Australian Parliament, reflecting the importance of safety in civil aviation. CASA has exercised its authority by issuing and subsequently cancelling AD/PA-23/74 for Piper PA-23-250 aircraft, effective from 12 February 2009, due to Australia's international obligations and without necessitating public consultation or a Regulatory Impact Statement.

Scope and Application

The Civil Aviation Act 1988, through its regulation 39.001, empowers the Civil Aviation Safety Authority (CASA) to issue airworthiness directives (ADs) concerning specific types of aircraft or aeronautical products, thereby ensuring the safety of air navigation as per section 98 of the Act. This regulatory framework is designed to maintain the continuing airworthiness of aircraft, a responsibility primarily attributed to the State of Registry under Annex 8 of the Convention on International Civil Aviation. While the State of Design holds overarching responsibility for the airworthiness of an aircraft type, the State of Registry must implement or adopt measures to ensure the ongoing airworthiness of individual aircraft within its jurisdiction. The issuance of ADs is a common practice among ICAO Contracting States, with Australia fulfilling its obligations through CASA, which has the authority to both issue and cancel such directives as circumstances warrant. For example, CASA has cancelled AD/PA-23/74 for Piper PA-23-250 aircraft, a decision made in line with Australia's international commitments, which obviated the need for public consultation or a Regulatory Impact Statement. This legislative instrument, made under subsection 84A(2) of the Act, underscores CASA's role in upholding aviation safety standards.

Key Provisions

The Civil Aviation Act 1988, as amended by the Civil Aviation Safety Regulations 1998, outlines the framework through which the Civil Aviation Safety Authority (CASA) issues airworthiness directives (ADs) (sections 98 and 39.001). Section 39.001(5) specifies that an AD is a disallowable instrument under the Acts Interpretation Act 1901 and, therefore, constitutes a legislative instrument as per section 6 of the Legislative Instruments Act 2003. Annex 8 to the Convention on International Civil Aviation mandates that the State of Design retains responsibility for the continuing airworthiness of an aircraft type and must furnish necessary information to the States of Registry. The State of Registry, in turn, is accountable for the individual aircraft's continuing airworthiness, with a duty to establish or adopt requisite measures for ensuring it (Annex 8). This legislative framework was exercised when CASA issued AD/PA-23/74, which pertained to Piper PA-23-250 aircraft. However, CASA has since reviewed and subsequently cancelled this directive, with the cancellation set to take effect on 12 February 2009. No replacement AD is deemed necessary. Under this Act, CASA and its predecessors are empowered to issue airworthiness directives that dictate safety measures and compliance criteria for specific types of aircraft or aeronautical products. These directives are issued to ensure the continuing airworthiness of aircraft as stipulated under the Convention on International Civil Aviation. The issuance of such directives is a critical tool for maintaining safety standards and ensuring compliance with international aviation safety protocols. Furthermore, the cancellation of AD/PA-23/74 reflects Australia's adherence to its international obligations and the evolving nature of aviation safety standards. The obligations imposed by the Civil Aviation Act 1988 and the Civil Aviation Safety Regulations 1998 on CASA and the State of Registry are significant. CASA must issue ADs in accordance with the Convention on International Civil Aviation, ensuring that all aircraft meet stringent safety standards. The State of Registry is responsible for implementing these directives to maintain the airworthiness of individual aircraft. Both entities must collaborate to ensure that all regulatory requirements are met, and they must remain vigilant in monitoring and enforcing compliance with airworthiness directives. This cooperative effort is essential to uphold the high safety standards required in the aviation industry. The Act also delineates the consequences for non-compliance with airworthiness directives. Although specific penalties are not detailed in the provided text, non-compliance generally results in serious repercussions. For aircraft operators, failure to adhere to ADs can lead to grounding of the aircraft, revocation of airworthiness certificates, and potential civil or criminal penalties. CASA has the authority to enforce these regulations and may take legal action against entities that fail to comply with airworthiness directives. This enforcement mechanism is crucial to maintaining the integrity of the aviation safety system and ensuring that all stakeholders prioritise safety above all else.

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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.