AD/HS 125/178 - Air Conditioning - Fan Venturi Motor

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Legislation au F2006L01020 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 United States FAA has issued AD 2006-01-04 affecting various Raytheon Aircraft Company model aircraft.  The United States is the State of Design for these types.  CASA has assessed this AD and has issued Australian AD/HS 125/178, which will become effective on 11 May 2006.  This AD cancels and replaces AD/HS 125/141.

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 Regulatory Review has determined that ADs do not require a Regulatory Impact Statement.

The AD has been made by the Manager, New Technologies and Systems, in the Manufacturing, Certification and New Technologies Office, 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 for ensuring the safety and efficiency of civil aviation in Australia, addressing a need for comprehensive regulation to manage the growing complexities and risks associated with air travel. This Act grants the Governor-General the authority to issue regulations aimed at enhancing the safety of air navigation. One such regulation, introduced under section 98 of the Act, pertains to the issuance of airworthiness directives (ADs) by the Civil Aviation Safety Authority (CASA) to ensure the continuing airworthiness of aircraft and aeronautical products. The Civil Aviation Safety Regulations 1998 further detail the process and responsibilities associated with ADs, which are legislative instruments subject to disallowance. These ADs are integral to fulfilling Australia's obligations under international aviation conventions, particularly Annex 8 to the Convention on International Civil Aviation, which mandates that States of Design and States of Registry collaborate to maintain the airworthiness of aircraft.

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 specified types of aircraft or aeronautical products. These directives are legislative instruments, as outlined under subregulation 39.001(5) of the Civil Aviation Safety Regulations 1998, and are made in accordance with section 98 of the Civil Aviation Act 1988. The ADs serve to ensure the continuing airworthiness of aircraft in line with international obligations under Annex 8 to the Convention on International Civil Aviation. CASA, as Australia’s national airworthiness authority, must assess and, if necessary, issue Australian ADs to enforce the requirements set by the State of Design. In this instance, CASA has issued AD/HS 125/178 in response to an AD issued by the United States Federal Aviation Administration for various Raytheon Aircraft Company model aircraft. This AD replaces the earlier AD/HS 125/141 and became effective on 11 May 2006. The issuance of this AD was pursuant to Australia’s obligations under the Convention on International Civil Aviation and did not require public consultation or a Regulatory Impact Statement.

Key Provisions

The Civil Aviation Act 1988, specifically section 98, empowers the Governor-General to create regulations that ensure the safety of air navigation. Regulation 39.001 of the Civil Aviation Safety Regulations 1998 grants the Civil Aviation Safety Authority (CASA) the authority to issue airworthiness directives (ADs) for specific types of aircraft or aeronautical products. This regulatory framework is essential for maintaining the safety and airworthiness of aircraft operating in Australian airspace. Under the Civil Aviation Safety Regulations 1998, the State of Design, which is the country responsible for the design of the aircraft, has the primary responsibility for the continuing airworthiness of an aircraft type. This includes providing necessary information to ensure the aircraft's airworthiness to the State of Registry, which is the country where the aircraft is registered. In Australia, CASA, as the national airworthiness authority, is tasked with assessing information from the State of Design and, if necessary, issuing Australian airworthiness directives to enforce the required safety measures. The obligations imposed by this legislation on CASA include evaluating airworthiness directives issued by other countries, particularly those from the State of Design, to ensure they align with Australian safety standards. If an AD is deemed appropriate, CASA must issue a corresponding Australian AD, which mandates the same safety requirements for aircraft registered in Australia. This ensures that Australian-registered aircraft meet international safety standards, fulfilling Australia's obligations under the Convention on International Civil Aviation. Failure to comply with airworthiness directives can lead to serious safety risks and legal consequences. Under the Civil Aviation Act 1988, non-compliance with an AD can result in significant penalties. Specifically, section 90 provides that an aircraft may be deemed not airworthy if it does not comply with an airworthiness directive. This can lead to enforcement actions by CASA, which may include fines, suspension, or revocation of the aircraft’s certificate of airworthiness. The severity of the penalties underscores the importance of adhering to these directives to maintain the highest safety standards in aviation.

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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.