AD/LEARJET 35/32 Amdt 1 - Tip Tank Flapper Valves

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

Legislation au F2005L02833 In force Legislative Instrument

Legislation content

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 issued AD 2005-16-09, affecting Learjet 35 and 36 series aircraft. The United States is the State of Design for this series of aircraft.  As a result of a request from industry, CASA has amended the equivalent Australian AD to AD/LEARJET 35/32 Amendment 1.  The amended AD will become effective on 27 October 2005.  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, 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 governing all aspects of civil aviation in Australia, with a primary focus on ensuring the safety of air navigation. Under the authority granted by section 98 of this Act, the Civil Aviation Safety Regulations 1998 were established, enabling the Civil Aviation Safety Authority (CASA) to issue airworthiness directives (ADs) for specific kinds of aircraft or aeronautical products. These ADs serve as legislative instruments, pursuant to the Legislative Instruments Act 2003, and are crucial for maintaining the continuing airworthiness of aircraft in accordance with international standards set by the International Civil Aviation Organization (ICAO). The Act empowers CASA, as Australia's national airworthiness authority, to assess and mandate the requirements of ADs issued by States of Design, ensuring compliance with both domestic and international obligations under the Convention on International Civil Aviation. The process of issuing ADs is driven by the need to address safety concerns and maintain the airworthiness of aircraft on the Australian Register, as exemplified by the amendment to AD/LEARJET 35/32 Amendment 1, which was necessitated by a corresponding directive from the United States Federal Aviation Administration.

Scope and Application

The Civil Aviation Act 1988 applies to all matters related to the safety of civil aviation in Australia. Under this Act, the Governor-General is empowered to make regulations that ensure the safety of air navigation. One such regulation, 39.001, allows the Civil Aviation Safety Authority (CASA) to issue airworthiness directives (ADs) for specific kinds of aircraft or aeronautical products. ADs are legislative instruments subject to disallowance under the Acts Interpretation Act 1901 and are regulated by the Legislative Instruments Act 2003. The application of these directives is crucial for maintaining the continuing airworthiness of aircraft, a responsibility that rests with the State of Registry under Annex 8 of the Convention on International Civil Aviation. CASA, as Australia's national airworthiness authority, must assess information from the State of Design and, if necessary, issue corresponding ADs. For instance, in response to an AD issued by the United States Federal Aviation Administration for Learjet 35 and 36 series aircraft, CASA has amended the Australian equivalent AD, reflecting its international obligations. This amendment, effective from 27 October 2005, replaces the previous directive and does not require public consultation or a Regulatory Impact Statement.

Key Provisions

The Civil Aviation Act 1988, along with the Civil Aviation Safety Regulations 1998, establishes a framework for ensuring the safety of air navigation in Australia. Specifically, section 98 of the Act allows the Governor-General to create regulations that align with the Act's objectives, primarily focusing on air navigation safety. Regulation 39.001 of the Civil Aviation Safety Regulations 1998 empowers the Civil Aviation Safety Authority (CASA) to issue airworthiness directives (ADs) concerning specific types of aircraft or aeronautical products. These ADs, as per subregulation 39.001(5), are considered disallowable instruments under section 46A of the Acts Interpretation Act 1901, and are legislative instruments as per section 6 of the Legislative Instruments Act 2003. The obligations under this Act and its regulations primarily focus on ensuring the continuing airworthiness of aircraft. According to Annex 8 of the Convention on International Civil Aviation, the State of Design has the overarching responsibility for the continuing airworthiness of an aircraft type and must provide necessary information to ensure airworthiness to the States of Registry. The State of Registry, in turn, is responsible for the continuing airworthiness of individual aircraft and must develop or adopt requirements to meet this responsibility. When a State of Design issues an AD, CASA, as Australia’s national airworthiness authority, must evaluate the information and, if appropriate, issue an Australian AD to enforce the requirements set by the State of Design. Failure to comply with an AD can lead to significant legal consequences. While the specific provisions regarding penalties are not detailed in the provided text, it is understood that non-compliance with airworthiness directives can result in both civil and criminal penalties. Such penalties may include fines, imprisonment, or both, depending on the severity and intent of the non-compliance. The maximum penalties for breaches of aviation safety regulations can be substantial, reflecting the critical importance of adhering to these directives to ensure public safety in air navigation. In summary, the Civil Aviation Act 1988 and the Civil Aviation Safety Regulations 1998 provide a structured approach to ensuring aircraft safety through the issuance and enforcement of airworthiness directives. The obligations placed on CASA and the States of Registry are designed to maintain the highest standards of airworthiness, with significant consequences for non-compliance.

Legal classification tags

Area of Law
Aviation Law
Instrument
Legislative Instrument
Concepts
Commencement Provisions
Regulatory Standards
Enforcement Powers

Interactions

Authorises

All Versions

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.