AD/LTS/13 Amdt 1 Improved Power Turbine Retention

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Legislation au F2021L01090 In force Legislative Instrument

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Explanatory Statement

Civil Aviation Safety Regulations 1998

AD/LTS/13 Amdt 1 — Improved Power Turbine Retention

Legislation

Under section 98 of the Civil Aviation Act 1988 (the Act), the Governor-General may make regulations for the purpose of carrying out and giving effect to the provisions of the Convention on International Civil Aviation relating to safety, amongst other things. Under regulation 39.001 of the Civil Aviation Safety Regulations 1998 (CASR), the Civil Aviation Safety Authority (CASA) may issue an airworthiness directive (AD) for a kind of aircraft or aeronautical product. Under subsections 98 (5B) and (5BA) of the Act, an AD is a legislative instrument unless it is expressed to apply in relation to a particular person, a particular aircraft or a particular aeronautical product.

Subsection 98 (5D) of the Act provides that a legislative instrument made under the Act or the regulations may apply, adopt or incorporate any matter contained in any instrument or other writing as in force or existing from time to time, even if the other instrument or writing does not yet exist when the legislative instrument is made.

Under subsection 33 (3) of the Acts Interpretation Act 1901, where an Act confers a power to make, grant or issue any instrument of a legislative or administrative character (including rules, regulations or by-laws), the power shall be construed as including a power exercisable in the like manner and subject to the like conditions (if any) to repeal, rescind, revoke, amend, or vary any such 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 International Civil Aviation Organization 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 foreign State of Design issued an AD before 1 October 2009 for 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 foreign State of Design. AD/LTS/13 Amdt 1 applies to Honeywell International LTS101-650B1, -750B1, -650C and -750C turboshaft engines.

The United States of America Federal Aviation Administration (FAA) issued AD 95‑26-01 affecting Honeywell International LTS101-650B1, -750B1, -650C and -750C turboshaft engines in 1996. The United States of America is the State of Design for this engine type. CASA subsequently issued AD/LTS/13 to mandate the requirements of FAA AD 95-26-01. As a result of an internal review, CASA has issued AD/LTS/13 Amdt 1 to remove references to legislative instruments no longer in force under Civil Aviation Regulation 1988. This AD repeals and replaces the previous AD on this subject.

Documents Incorporated by Reference

Honeywell International Service Bulletins LTS 101B-72-50-0122 Revision 4, LTS 101B-72-50-0116 Revision 6 and LTS 101C-72-50-0119 Revision 2 as applicable (the technical documents), detail the installation of an improved power turbine retention system and improved power turbine rotor assembly.

 

Honeywell International Service Bulletins LTS 101B-73-10-0127 Revision 2 and LTS 101C-73-10-0129 Revision 3 as applicable (the technical documents), detail the installation of an improved electronic power turbine rotor overspeed controller.

 

For subsection 98 (5D) of the Act, these technical documents are incorporated as they exist on the date of commencement of the AD.  The technical documents are not freely available.

 

The technical documents are proprietary, copyright, fee-for-service documents, prepared on a commercial basis. They can be purchased from the aircraft or component manufacturer by subscription.

As a matter of practicality, it would not be possible for aircraft operators to operate aircraft in Australian and foreign airspace without having their own subscription access to relevant technical documents of the aircraft or engine manufacturer. Nevertheless, as a current subscriber for the documents, CASA will make the relevant sections of the incorporated technical document available, in its Canberra or regional offices, by arrangement, and, in keeping with the proprietary nature of the documents, for viewing only, to any aircraft operator who is affected by the direction instrument, or to any interested person.

The Federal Aviation Administration AD 95-26-01 is mentioned in the AD but not incorporated by reference in it.  It is freely available from the Federal Aviation Administration website at the following internet address:

FAA AD 95-26-01 (faa.gov)

Consultation

This AD is being made as a result of an internal CASA review to remove references to legislative instruments no longer in force under Civil Aviation Regulation 1988. As this AD amendment is of a minor or machinery nature and does not substantially alter existing arrangements apart from updating references to reflect current requirements, it is CASA’s view that it was not necessary or appropriate to undertake any further consultation under section 17 of the Legislation Act 2003.

Regulation Impact Statement

A Regulation Impact Statement (RIS) is not required because ADs are covered by a standing agreement between CASA and the Office of Best Practice Regulation under which a RIS is not required for ADs (OBPR id. 14507).

Statement of Compatibility with Human Rights

A Statement of Compatibility with Human Rights is at Attachment 1.

Making and commencement

The instrument has been made by a delegate of CASA relying on the power of delegation under subregulation 11.260 (1) of CASR and subsection 94 (1) of the Act.

The instrument commences on 20 August 2021.

[Instrument number AD/LTS/13 Amdt 1]


Attachment 1

Statement of Compatibility with Human Rights

Prepared in accordance with Part 3 of the
Human Rights (Parliamentary Scrutiny) Act 2011

AD/LTS/13 Amdt 1 – Improved Power Turbine Retention

This legislative instrument is compatible with the human rights and freedoms recognised or declared in the international instruments listed in section 3 of the Human Rights (Parliamentary Scrutiny) Act 2011.

Overview of the legislative instrument

The United States of America Federal Aviation Administration (FAA) issued AD 95‑26-01 affecting Honeywell International LTS101-650B1, -750B1, -650C and -750C turboshaft engines in 1996. The United States of America is the State of Design for this engine type. CASA subsequently issued AD/LTS/13 to mandate the requirements of FAA AD 95-26-01. As a result of an internal review, CASA has issued AD/LTS/13 Amdt 1 to remove references to legislative instruments no longer in force under Civil Aviation Regulation 1988.

The primary purpose of this legislative instrument is to remove obsolete references and make minor editorial changes to reflect current requirements.

Human rights implications

This legislative instrument does not engage any of the applicable rights or freedoms.

Conclusion

This legislative instrument is compatible with human rights as it does not raise any human rights issues.

Civil Aviation Safety Authority

Overview

The Civil Aviation Safety Regulations 1998 were amended by AD/LTS/13 Amdt 1 in 2021 to address issues related to the retention of power turbines in certain Honeywell International LTS101 turboshaft engines. This legislative instrument was enacted under section 98 of the Civil Aviation Act 1988, allowing the Governor-General to make regulations for the purpose of implementing international civil aviation safety standards. The Civil Aviation Safety Authority (CASA), Australia's national airworthiness authority, issued this amendment to update the airworthiness directive (AD) originally mandated by CASA based on a Federal Aviation Administration (FAA) directive from 1996. The primary objective of AD/LTS/13 Amdt 1 is to remove references to obsolete legislative instruments and make minor editorial changes to reflect current requirements, ensuring the continuing airworthiness of the affected aircraft engines in accordance with international safety standards. This amendment to the Civil Aviation Safety Regulations 1998 was introduced to rectify outdated references within the existing AD/LTS/13, thereby maintaining compliance with contemporary legislative frameworks and ensuring that the regulations remain effective and relevant. The amendment does not substantially alter existing arrangements, focusing instead on updating references to reflect current requirements and removing obsolete legislative references. CASA, acting within its authority under the Civil Aviation Act 1988 and the Civil Aviation Safety Regulations 1998, issued this amendment without the need for additional consultation or a Regulation Impact Statement, as it is considered a minor or machinery amendment.

Scope and Application

The Civil Aviation Safety Regulations 1998 Amendment (Improved Power Turbine Retention) Instrument 2021 (AD/LTS/13 Amdt 1) applies specifically to the Honeywell International LTS101-650B1, -750B1, -650C, and -750C turboshaft engines. It mandates compliance with certain safety directives issued by the United States of America Federal Aviation Administration (FAA) regarding these engines, ensuring the ongoing airworthiness of these aircraft engines in Australian airspace. This amendment is made under the authority conferred by section 98 of the Civil Aviation Act 1988, which allows for regulations to be made for the purpose of carrying out and giving effect to the provisions of the Convention on International Civil Aviation relating to safety. The Civil Aviation Safety Authority (CASA) is responsible for issuing airworthiness directives (ADs) under regulation 39.001 of the Civil Aviation Safety Regulations 1998, which are legislative instruments unless they apply to a particular person, aircraft, or aeronautical product. AD/LTS/13 Amdt 1 replaces the previous AD/LTS/13 to update references and remove obsolete legislative references, while maintaining the requirement for compliance with the technical documents specified. This amendment does not substantially alter existing arrangements and was deemed not to require further consultation under the Legislation Act 2003. The instrument commenced on 20 August 2021.

Key Provisions

The primary operative sections of the Civil Aviation Safety Regulations 1998 (CASR) in this context pertain to the issuance of airworthiness directives (ADs) under regulation 39.001 (paragraph 1). The AD/LTS/13 Amdt 1 specifically applies to the Honeywell International LTS101-650B1, -750B1, -650C, and -750C turboshaft engines, mandating compliance with the improved power turbine retention system and other specified technical requirements. This amendment follows an internal review by the Civil Aviation Safety Authority (CASA) to ensure that all references to outdated legislative instruments under Civil Aviation Regulation 1988 are removed and that the AD reflects current safety standards. The obligations imposed by AD/LTS/13 Amdt 1 on the parties and entities it governs include ensuring that the specified turboshaft engines are fitted with the improved power turbine retention system as detailed in the incorporated technical documents. These documents are not freely available but can be accessed by arrangement through CASA. Aircraft operators must ensure they have the necessary technical documents and comply with the installation requirements to maintain the airworthiness of their aircraft. CASA has the authority to inspect and verify compliance with these ADs, and failure to comply can result in enforcement actions. In terms of consequences for non-compliance, breaches of airworthiness directives can result in severe penalties. Under the Civil Aviation Act 1988, non-compliance with ADs may lead to enforcement actions, including fines and potential criminal charges. While the specific penalties are not detailed in the explanatory statement, penalties for breaching airworthiness requirements can include substantial fines, suspension or revocation of airworthiness certificates, and other regulatory sanctions. CASA may also pursue civil or criminal proceedings against individuals or entities found in violation of the ADs, leading to both financial and reputational consequences.

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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.