AD/AIRCON/14 Amdt 4 - Zonal Drying System Regeneration Air Duct Overheat

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Legislation au F2009L02244 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 EASA issued AD 2006-0140R4 affecting aircraft fitted with certain Zonal Drying Systems manufactured by Lufthansa Technik AG, SR Technics, Jet Aviation Basel AG, and CTT Systems AB.  Various national aviation authorities operating under the EASA are the State of Design for these systems.  As a result CASA has amended the equivalent Australian AD to AD/AIRCON/14 Amendment 4.  The amended AD will become effective on 2 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 Regulatory Review has determined that ADs do not require a Regulatory Impact Statement.

The AD has been made by the Manager, Systems and New Technologies 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 for the safety and regulation of civil aviation in Australia. The Act empowers the Governor-General to make regulations that promote the safety of air navigation. In line with this mandate, the Civil Aviation Safety Regulations 1998 were established, which include provisions for the issuance of airworthiness directives (ADs) by the Civil Aviation Safety Authority (CASA). These ADs are legislative instruments under the Acts Interpretation Act 1901 and the Legislative Instruments Act 2003, intended to ensure that aircraft and aeronautical products meet continuing airworthiness standards. The Civil Aviation Act and the associated regulations were designed to align Australia's aviation safety standards with international obligations, particularly those outlined in 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 Act 1988 and the Civil Aviation Safety Regulations 1998 provide the legislative framework for the issuance of airworthiness directives (ADs) in Australia. Pursuant to regulation 39.001 of the Civil Aviation Safety Regulations 1998, the Civil Aviation Safety Authority (CASA) has the authority to issue ADs for certain kinds of aircraft or aeronautical products. These directives are legislative instruments and are made under the authority of the Governor-General in accordance with section 98 of the Civil Aviation Act 1988. The ADs serve to ensure the continuing airworthiness of aircraft and aeronautical products, aligning with international obligations under Annex 8 to the Convention on International Civil Aviation. The State of Registry, which in the Australian context is CASA, has the responsibility of ensuring that ADs issued by States of Design are appropriately assessed and, if necessary, adapted for the Australian context. The ADs apply to the specific aircraft or aeronautical products they target and are subject to the international and domestic legislative frameworks governing civil aviation safety. The issuance of ADs does not require consultation with the Australian public or a Regulatory Impact Statement, as they are integral to fulfilling international obligations and ensuring safety standards in aviation.

Key Provisions

The Civil Aviation Safety Regulations 1998, under regulation 39.001, empower the Civil Aviation Safety Authority (CASA) to issue airworthiness directives (ADs) concerning specific types of aircraft or aeronautical products. This regulatory action is authorised under section 98 of the Civil Aviation Act 1988 to ensure air navigation safety. Section 39.001(5) of these regulations further clarifies that ADs are considered disallowable instruments as per section 46A of the Acts Interpretation Act 1901, and thus fall under the purview of the Legislative Instruments Act 2003 as legislative instruments. These directives are pivotal in maintaining the continuing airworthiness of aircraft types, aligning with the requirements outlined in Annex 8 to the Convention on International Civil Aviation. Compliance with these directives is critical for all parties involved. The State of Design, which is responsible for the initial design and airworthiness of an aircraft type, must provide necessary information to ensure continued airworthiness. The State of Registry, which is the country where the aircraft is registered, has the responsibility to adopt or develop regulations to maintain the airworthiness of the aircraft within its jurisdiction. CASA, as Australia's national airworthiness authority, must evaluate any AD issued by the State of Design and, if necessary, issue an equivalent AD for Australia. This ensures that all aircraft registered in Australia meet the safety standards set forth by international and domestic regulations. Failure to comply with an AD can result in significant legal consequences. The Civil Aviation Act 1988 and the Civil Aviation Safety Regulations 1998 outline various offences related to non-compliance with airworthiness directives. Penalties can include fines, imprisonment, or both, depending on the severity of the breach. For instance, section 98A of the Civil Aviation Act 1988 stipulates that a person who contravenes an AD can be fined up to a certain amount or imprisoned for a specific duration, or both, depending on the nature and extent of the breach. Additionally, the operator of an aircraft that does not comply with an AD may face additional regulatory actions, including grounding of the aircraft or suspension of operational certificates. The Civil Aviation Safety Regulations 1998 also include provisions for the revocation or suspension of airworthiness certificates if an AD is not complied with. This is a serious measure that can significantly impact the operational capabilities of an aircraft. Moreover, repeated non-compliance can lead to more severe penalties, including higher fines and longer periods of imprisonment. The regulatory framework is designed to ensure that all stakeholders, including aircraft manufacturers, operators, and regulatory authorities, take airworthiness directives seriously to maintain the highest safety standards in civil 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.