AD/INST/7 - H14 Automatic Pilot Servo Housing - Inspection - CANCELLED

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

Legislation au F2009L00483 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/INST/7 affecting H14 automatic pilot servo housings.  CASA has assessed this AD and as a result has cancelled Australian AD/INST/7.  The cancellation will become effective on
12 March 2009.  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 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, enacted to ensure the safety of air navigation in Australia, was instrumental in providing the legislative framework for the Civil Aviation Safety Regulations 1998. This act empowers the Governor-General to make regulations for air navigation safety, and under regulation 39.001, the Civil Aviation Safety Authority (CASA) is authorised to issue airworthiness directives (ADs) for aircraft or aeronautical products. This regulatory mechanism is essential for maintaining the continuing airworthiness of aircraft, aligning with international obligations under Annex 8 to the Convention on International Civil Aviation. The State of Design is responsible for the airworthiness of an aircraft type, and CASA, as Australia’s national airworthiness authority, must act on ADs issued by the State of Design to ensure compliance with international standards. This legislative framework ensures that CASA can mandate necessary requirements through ADs, as seen in the cancellation of AD/INST/7 concerning H14 automatic pilot servo housings, which was issued and subsequently cancelled based on the assessment of safety risks.

Scope and Application

The Civil Aviation Act 1988 and the Civil Aviation Safety Regulations 1998 provide the legislative framework for the regulation of civil aviation safety in Australia, with a focus on the issuance of airworthiness directives (ADs). Under this Act, the Governor-General may issue regulations to ensure the safety of air navigation, and regulation 39.001 allows the Civil Aviation Safety Authority (CASA) to issue ADs for specific kinds of aircraft or aeronautical products. These ADs serve as legislative instruments under the Acts Interpretation Act 1901 and the Legislative Instruments Act 2003. The application of ADs is in line with Annex 8 of the Convention on International Civil Aviation, where the State of Design holds responsibility for an aircraft type’s continuing airworthiness, while the State of Registry, in this case CASA, must ensure the aircraft's ongoing compliance with safety standards. The cancellation of Australian AD/INST/7 for H14 automatic pilot servo housings reflects the dynamic nature of airworthiness directives, which are subject to changes based on international obligations and safety assessments conducted by CASA. This process does not require public consultation or a Regulatory Impact Statement, as determined by the Office of Best Practice Regulation, and is executed by CASA in accordance with the legislative provisions.

Key Provisions

The main operative sections of this legislation pertain to the issuance and cancellation of airworthiness directives (ADs) under the Civil Aviation Act 1988 and Civil Aviation Safety Regulations 1998. Section 98 of the Civil Aviation Act 1988 provides the authority for the Governor-General to make regulations for the safety of air navigation, while regulation 39.001 of the Civil Aviation Safety Regulations 1998 specifically allows the Civil Aviation Safety Authority (CASA) to issue ADs for kinds of aircraft or aeronautical products. An AD is defined as a disallowable instrument under subregulation 39.001(5) and is considered a legislative instrument under the Legislative Instruments Act 2003. The State of Design, typically the manufacturer, has the overarching responsibility for the continuing airworthiness of an aircraft type and must provide necessary information to States of Registry, including Australia. CASA, as Australia's national airworthiness authority, is obligated to assess this information and, if necessary, issue an Australian AD to enforce the requirements stipulated by the State of Design. The obligations and requirements imposed by this legislation are primarily on CASA and the State of Design. CASA must rigorously assess any AD issued by the State of Design and, if deemed necessary, issue a corresponding Australian AD to ensure compliance with safety standards. The State of Design, on the other hand, must provide comprehensive information to States of Registry, including details that ensure the continuing airworthiness of aircraft types. This collaborative effort is essential to maintaining safety standards in the aviation industry. Additionally, the State of Registry, in this case, Australia, must develop or adopt requirements to ensure the continuing airworthiness of aircraft registered within its jurisdiction. This includes acting on ADs issued by CASA or other States of Design to ensure all aircraft meet the necessary safety standards. Any breach of the provisions under this legislation can lead to various civil and criminal consequences. Although specific penalties are not detailed in the explanatory statement, it is known that the issuance and enforcement of ADs are critical to maintaining aviation safety. Failure to comply with an AD could result in significant penalties, including fines or other regulatory actions, and could potentially lead to criminal charges in cases of gross negligence or willful disregard for safety regulations. The severity of penalties may vary depending on the nature and extent of the breach, with potential consequences for both individuals and corporate entities involved in the manufacture or operation of affected aircraft. CASA has the authority to enforce compliance and take appropriate action against those who fail to adhere to the mandated safety standards. In summary, the Civil Aviation Act 1988 and the Civil Aviation Safety Regulations 1998 provide the legislative framework for issuing and enforcing airworthiness directives in Australia. CASA plays a crucial role in assessing and implementing these directives to ensure the safety of aircraft, while the State of Design is responsible for providing necessary information to maintain airworthiness. Failure to comply with these regulations can result in severe civil and criminal penalties, underscoring the importance of adhering to the stipulated safety standards.

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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.