AIRWORTHINESS DIRECTIVE
For the reasons set out in the background section, the CASA delegate whose signature appears below revokes Airworthiness Directive (AD) AD/TAY/3 and issues the following 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/3
Amdt 1
Engine Controls - Emergency Fuel Shut Off System
9/2003
Applicability: Rolls Royce Tay 650-15, 620-15 and 651-54 series engines not incorporating Rolls Royce Service Bulletin (SB) SB76-1466 as indicated in paragraph 1.A. Planning Information of Rolls Royce SB TAY 76-1434, Revision 3, dated 14 September 2001.
Requirement: 1. For installed engines, initially inspect emergency fuel shut-off cable for broken strands in accordance with paragraph 3.A. Accomplishment Instructions of Rolls Royce SB TAY 76-1434, Revision 3, dated 14 September 2001; and
2. For installed engines, re-inspect, or replace cable, following compliance with Requirement 1, as required by paragraph 3.A. Accomplishment Instructions of Rolls Royce SB TAY 76-1434, Revision 3, dated 14 September 2001.
3. For engines undergoing shop visit, inspection/check is to be done in accordance with relevant Engine Manual 72-52-35 as required by paragraph 3.A. Accomplishment Instructions of Rolls Royce SB TAY 76-1434, Revision 3, dated 14 September 2001.
Note: CAA (UK) AD 003-03-98 dated 28 May 1998 refers.
Compliance: For Requirement 1: For those engines in compliance with the initial 1,000 hour inspection required by the original issue of this Directive, no initial inspection required. For those engines not in compliance with the initial 1,000 hour inspection required by the original issue of this Directive, within 100 hours time-in-service (TIS) from the effective date of this Directive.
For Requirement 2: At intervals as required by paragraph 3.A. Accomplishment Instructions of Rolls Royce SB TAY 76-1434, Revision 3, dated 14 September 2001, from when compliance with Requirement 1 carried out.
For Requirement 3: During shop visit as required by paragraph 3.A. Accomplishment Instructions of Rolls Royce SB TAY 76-1434, Revision 3, dated 14 September 2001 from the effective date of this Directive.
This Amendment becomes effective on 4 September 2003.
Rolls Royce Turbine Engines - Tay Series
AD/TAY/3 Amdt 1 (continued)
Background: A number of worn, frayed and, in one case, broken Emergency Fuel Shut-off Cables have been reported in service. The wear occurs at the aft guide quadrant, which supports the cable and turns it through 90 degrees. Failure of a significant number of strands in the cable could result in the non-operation of the emergency fuel shut-off in the unlikely event of the system being required. This Amendment amends the applicability to reflect the SB effectivity, introduces the latest SB revision, which indicates changes to the accomplishment instruction, and re-writes the presentation.
The original issue of this Airworthiness Directive became effective on 28 January 1999.
Jim Coyne
Delegate of the Civil Aviation Safety Authority 25 July 2003
The above AD is notified in the Commonwealth of Australia Gazette on 13 August 2003.
Overview
The Airworthiness Directive (AD) F2006B07264, enacted in 2003, was introduced to address the issue of worn, frayed, and broken emergency fuel shut-off cables in Rolls Royce Tay series engines. This problem, identified at the aft guide quadrant, could potentially result in the non-operation of the emergency fuel shut-off system, posing a safety risk. The AD was issued by the Civil Aviation Safety Authority (CASA) under subregulation 39.1 (1) of the Civil Aviation Safety Regulations 1998, aiming to mandate specific inspections and replacements to ensure the continued airworthiness of affected aircraft. The directive was subsequently amended on 4 September 2003 to incorporate the latest service bulletin from Rolls Royce, providing updated instructions for compliance and re-writing the presentation for clarity and effectiveness.
Scope and Application
The Airworthiness Directive (AD) issued by the Civil Aviation Safety Authority (CASA) applies specifically to Rolls Royce Tay 650-15, 620-15 and 651-54 series engines that do not incorporate Rolls Royce Service Bulletin (SB) SB76-1466. This directive is aimed at addressing the issue of worn, frayed, or broken emergency fuel shut-off cables, which pose a risk of non-operation of the emergency fuel shut-off system in certain circumstances. The directive applies to both installed engines and engines undergoing shop visits, requiring inspections and actions to ensure the cables are in safe working condition. The geographic reach of this AD is the Commonwealth of Australia, and it is enforced by CASA, which has the authority to issue and revoke such directives under the Civil Aviation Safety Regulations 1998. The AD does not specify any exclusions or exemptions but mandates strict compliance timelines and procedures as outlined in the requirement and compliance sections. The directive extends its application through the reference to Rolls Royce Service Bulletins and Engine Manuals, indicating that CASA may rely on these documents for detailed instructions and standards.
Key Provisions
The Airworthiness Directive (AD) AD/TAY/3 Amendment 1 pertains to the Rolls Royce Tay 650-15, 620-15, and 651-54 series engines. Specifically, it applies to those engines that do not incorporate Rolls Royce Service Bulletin (SB) SB76-1466. The AD mandates certain actions to address an unsafe condition associated with the Emergency Fuel Shut Off System in these engines (Section 2). The key requirements outlined in the directive include inspecting the emergency fuel shut-off cable for broken strands, re-inspecting or replacing the cable as necessary, and conducting inspections or checks during shop visits in accordance with the Rolls Royce Engine Manual 72-52-35 and SB TAY 76-1434, Revision 3 (Section 3).
The AD imposes several obligations on the parties or entities it governs. For installed engines, it requires an initial inspection of the emergency fuel shut-off cable for broken strands, followed by re-inspection or replacement of the cable as per the specified instructions. For engines undergoing a shop visit, inspections or checks must be carried out in accordance with the Engine Manual and Service Bulletin. These actions must be performed within specific timeframes and intervals as outlined in the directive (Section 3). The AD also references UK CAA AD 003-03-98, indicating a coordinated approach to addressing the identified safety issue.
Breaches of this Airworthiness Directive can result in significant consequences. The AD does not explicitly state penalties but implies severe repercussions given its focus on correcting an unsafe condition. Non-compliance could potentially lead to the grounding of affected aircraft, which would severely impact the operator's ability to fly until the directive is adhered to. Additionally, failure to comply with ADs can lead to enforcement actions by the Civil Aviation Safety Authority (CASA), which could include fines, legal proceedings, or other regulatory sanctions. The seriousness of the potential outcomes underscores the importance of adhering to the specified requirements.