AD/GENERAL/43 - Power Supply Connections to Hourmeters - CANCELLED

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

Legislation au F2007L04537 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 issued AD/GENERAL/43 affecting aircraft in 1970.  CASA has assessed this AD and as a result has cancelled Australian AD/GENERAL/43.  The cancellation will become effective on 20 December 2007.  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 establish and regulate civil aviation in Australia, ensuring safety and efficiency within the industry. In alignment with this overarching legislation, the Civil Aviation Safety Regulations 1998 were developed to provide detailed rules governing the airworthiness of aircraft and aeronautical products. One of the significant regulatory tools under these regulations is the issuance of airworthiness directives (ADs), which are used to mandate safety improvements and maintenance actions for aircraft types registered in Australia. The Civil Aviation Safety Authority (CASA) is tasked with issuing these directives to uphold the continuing airworthiness of aircraft, in accordance with international standards set by the International Civil Aviation Organization (ICAO). The Act and its associated regulations aim to ensure that all aircraft operating within Australian airspace meet the necessary safety standards, thereby protecting both the public and the integrity of the aviation industry.

Scope and Application

The Civil Aviation Act 1988, supplemented by the Civil Aviation Safety Regulations 1998, provides the legislative framework under which airworthiness directives (ADs) are issued in Australia. Under this framework, the Civil Aviation Safety Authority (CASA) has the authority to issue ADs for specific types of aircraft or aeronautical products to ensure the safety of air navigation, in accordance with regulation 39.001 of the Civil Aviation Safety Regulations 1998. These ADs are considered legislative instruments under the Legislative Instruments Act 2003, and their issuance aligns with Australia's international obligations under the Convention on International Civil Aviation, specifically Annex 8, which assigns responsibility for the continuing airworthiness of aircraft types to the State of Design and mandates the dissemination of necessary information to States of Registry, including Australia. CASA, as the national airworthiness authority, is tasked with assessing information provided by the State of Design and issuing Australian ADs as necessary. The application of this regulation extends to all aircraft and aeronautical products registered in Australia, encompassing various entities and industries involved in civil aviation. The ADs can affect all relevant stakeholders within the aviation sector, ensuring compliance with safety standards. Geographic reach is effectively national, as CASA oversees the entire Australian Register, though the directives must also align with international standards. The Act does not specify exclusions or exemptions, but the issuance and enforcement of ADs are guided by the international and national legislative frameworks. The ADs may be further detailed or extended through subordinate instruments, which must also adhere to the overarching legislative and regulatory structure.

Key Provisions

The Civil Aviation Act 1988 (section 98) empowers the Governor-General to create regulations aimed at ensuring the safety of air navigation. This authority is exercised through the Civil Aviation Safety Regulations 1998, where regulation 39.001 grants the Civil Aviation Safety Authority (CASA) the power to issue airworthiness directives (ADs) for specific types of aircraft or aeronautical products. Under subregulation 39.001(5), an AD is classified as a disallowable instrument under the Acts Interpretation Act 1901, and it is considered a legislative instrument according to section 6 of the Legislative Instruments Act 2003. The obligations under the Civil Aviation Act 1988 and the Civil Aviation Safety Regulations 1998 fall heavily on CASA. As the national airworthiness authority, CASA is mandated to assess any airworthiness directives issued by the State of Design and determine if an Australian AD is necessary to maintain the continuing airworthiness of aircraft registered in Australia. This obligation is further supported by Annex 8 to the Convention on International Civil Aviation, which assigns the State of Design the responsibility for the continuing airworthiness of aircraft types and requires them to provide necessary information to States of Registry. In turn, the State of Registry must develop or adopt requirements to ensure the continuing airworthiness of the aircraft registered within their jurisdiction. Breaching the requirements set forth by the ADs could lead to serious consequences, both civil and criminal. The Civil Aviation Act 1988 stipulates penalties for non-compliance, which can include fines and imprisonment. The exact penalties are not specified in the provided text, but typically, failure to comply with ADs could result in significant fines, and in severe cases, imprisonment. CASA has the authority to enforce these regulations, and non-compliance can lead to enforcement actions against the aircraft operators or owners. In the specific instance of AD/GENERAL/43, issued in 1970 and subsequently cancelled on 20 December 2007, CASA determined that the unsafe condition no longer existed, leading to the cancellation of the directive. This action was taken in line with Australia’s obligations under the Convention on International Civil Aviation, and no consultation with the Australian public was required. Additionally, the Office of Best Practice Regulation has concluded that ADs do not necessitate a Regulatory Impact Statement. The AD was 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.

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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.