COMMONWEALTH OF AUSTRALIA (Civil Aviation Safety Regulations 1998), PART 39 - 106 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
AIRWORTHINESS DIRECTIVE
For the reasons set out in the background section, the CASA delegate whose signature appears below issues the following Airworthiness Directive (AD) under subregulation 39.1 (1) of CASR 1998. The AD requires that the action set out in the requirement section (being action that the delegate considers necessary to correct the unsafe condition) be taken in relation to the aircraft or aeronautical product mentioned in the applicability section: (a) in the circumstances mentioned in the requirement section; and (b) in accordance with the instructions set out in the requirement section; and (c) at the time mentioned in the compliance section.
Rolls Royce Turbine Engines - Tay Series
AD/TAY/14 Fuel Cut-off Ring 12/2004
Applicability: All TAY620-15 and TAY620-15/20 engines prior to engine serial number 17023 that do not have Service Bulletin (SB) TAY-72-1025 standard incorporated.
Requirement: 1. Carry out an inspection of the front fuel cut-off ring in accordance with SB TAY- 72-1646 dated 21 September 2004.
2. Carry out rectification of any defects found during the inspection as detailed in Requirement 1 of this Directive in accordance with SB TAY-72-1646.
Note: LBA AD 2004-427 EASA approval No. 2004-9616 refers.
Compliance: For Requirement 1:
For engines installed; within 500 flight hours from the effective date of this Directive.
For uninstalled engines; prior to installation in an aeroplane.
For Requirement 2: Before further flight.
This Airworthiness Directive becomes effective on 25 November 2004.
Background: The installation of post SB TAY- 72-1025 low-pressure compressor blade-retaining rings on engines, which do not have SB TAY-72-1025 standard incorporated is incorrect and could lead to the disablement of the emergency fuel shut-off mechanism.
James Coyne
Delegate of the Civil Aviation Safety Authority 12 October 2004
The above AD is notified in the Commonwealth of Australia Gazette on 3 November 2004.
Overview
The Civil Aviation Safety Regulations 1998, enacted by the Australian Parliament, were established to provide a comprehensive regulatory framework for ensuring the safety of civil aviation operations within Australia. One of the key components of this legislative instrument is Part 39, which addresses Airworthiness Directives aimed at mitigating safety risks associated with specific aircraft or aeronautical products. One such directive, AD/TAY/14, was issued to address the unsafe condition identified with the Rolls Royce Turbine Engines - Tay Series, specifically concerning the fuel cut-off ring. This directive was issued under the authority of the Civil Aviation Safety Authority (CASA) to mandate inspections and necessary rectifications to prevent potential disablement of the emergency fuel shut-off mechanism in certain TAY620-15 and TAY620-15/20 engines. The policy objective behind such directives is to maintain and enhance aviation safety by promptly addressing identified hazards through regulatory mandates.
Scope and Application
The Civil Aviation Safety Regulations 1998, specifically Part 39 - 106, governs the issuance of Airworthiness Directives (ADs) by the Civil Aviation Safety Authority (CASA) to ensure the safety of aircraft and aeronautical products in Australia. The AD in question pertains to Rolls Royce Turbine Engines of the Tay Series, more precisely the TAY620-15 and TAY620-15/20 engines prior to engine serial number 17023 that do not have the Service Bulletin (SB) TAY-72-1025 standard incorporated. The AD mandates specific actions to rectify an unsafe condition identified with the fuel cut-off ring, which could disable the emergency fuel shut-off mechanism if not addressed. The requirements of the AD must be met by both installed and uninstalled engines, with different compliance timelines depending on the engine's status. This AD applies nationally and is enforced through subordinate instruments, ensuring that all affected aircraft and engines within Australia comply with the safety measures outlined.
Key Provisions
The Civil Aviation Safety Regulations 1998 (CASR) include specific sections governing the safety of aircraft and aeronautical products, with Part 39 detailing Airworthiness Directives (ADs). Section 39.1(1) allows for the issuance of ADs by a delegate of the Civil Aviation Safety Authority (CASA) when an unsafe condition is identified in aircraft or aeronautical products. The AD outlined in the document pertains to Rolls Royce Turbine Engines of the Tay Series, specifically addressing the fuel cut-off ring for certain engines (section 39.1(1)).
Under this AD, all TAY620-15 and TAY620-15/20 engines prior to serial number 17023 that do not have the Service Bulletin (SB) TAY-72-1025 standard incorporated must undergo an inspection of the front fuel cut-off ring, as per SB TAY-72-1646 dated 21 September 2004 (Requirement 1). Additionally, any defects identified during this inspection must be rectified following the same bulletin (Requirement 2). These actions are mandatory and must be carried out by the specified timeframes: inspections for installed engines must occur within 500 flight hours from the effective date of the AD, and for uninstalled engines, inspections must be conducted prior to installation (Compliance for Requirement 1). Defect rectification must occur before any further flight (Compliance for Requirement 2).
Failure to comply with the AD may result in severe consequences. The AD is legally binding, and non-compliance could lead to enforcement actions under the Civil Aviation Act 1988. Such actions may include fines, penalties, and other sanctions that could impact the airworthiness certification of the aircraft or aeronautical product. The exact penalties for non-compliance are not specified in the AD but are typically substantial, reflecting the importance of adhering to safety directives to ensure the safety of air travel.