2007-24-09 Rolls-Royce plc: Amendment 39-15275. Docket No. FAA-2006- 26052; Directorate Identifier 2006-NE-30-AD.
Effective Date
(a) This airworthiness directive (AD) becomes effective December 14, 2007.
Affected ADs
(b) This AD supersedes AD 2006-23-11, Amendment 39-14823.
Applicability
(c) This AD applies to Rolls-Royce plc (RR) RB211 Trent 768-60, 772-60, and 772B-60 turbofan engines. These engines are installed on, but not limited to, Airbus A330 series airplanes.
Unsafe Condition
(d) This AD results from RR introducing a revised high pressure/ low pressure (HP/IP) turbine bearing support structure as terminating action to the repetitive inspections of the HP/IP turbine bearing oil feed tube heat shield. We are issuing this AD to prevent an uncontained failure of the HP turbine disc and damage to the airplane.
Compliance
(e) You are responsible for having the actions required by this AD performed within the compliance times specified unless the actions have already been done.
Initial Inspection
(f) Initially inspect the HP/IP turbine oil feed tube outer heat shield for cracks. Use either 3.A.(1) through 3.A.(3) on-wing procedures or 3.B.(1)(a) through 3.B.(1)(e) in-shop procedures of RR Alert Service Bulletin (ASB) No. RB.211-72-AF045, Revision 2, dated July 27, 2006, at one of the following compliance times:
(1) At the next shop visit of the 05 Module regardless of the reason for the visit; or
(2) Before one of the following intervals whichever occurs latest:
(i) 10,000 hours or 2,500 cycles since new, whichever occurs first, or
(ii) 2,500 cycles since overhaul of the 05 Module.
Repetitive Inspection
(g) Re-inspect the HP/IP turbine oil feed tube outer heat shield for cracks as specified in the applicable criteria of paragraphs C.(1)(b)(i) through C(1)(b)(vi) or C(2)(b)(i) through C(2)(b)(ii) of RR ASB No. RB.211-72-AF045, Revision 2, dated July 27, 2006. Use either 3.A.(1) through 3.A.(3) on-wing procedures or 3.B.(1)(a) through 3.B.(1)(e) in-shop procedures of RR ASB RB.211-72-AF045, Revision 2, dated July 27, 2006.
Remove HP/IP Turbine Oil Feed Tube Outer Heat Shields From Service
(h) Remove from service HP/IP turbine oil feed tube outer heat shields according to the applicable criteria in paragraphs C(1)(b)(vii) through C(1)(b)(vii) or C(2)(b)(iii) of RR ASB No. RB.211-72-AF045, Revision 2, dated July 27, 2006.
Terminating Action
(i) At the next 05 Module overhaul after the effective date of this AD, or before May 31, 2010, whichever occurs first, as terminating action to the repetitive inspections in this AD, introduce the revised HP/IP turbine bearing support structure.
(j) Use one of the following to introduce the revised HP/IP turbine bearing support structure:
(1) RR Service Bulletin (SB) No. RB.211-72-F117, Revision 2, dated September 25, 2006; or
(2) RR SB No. RB.211-72-F227, Revision 1, dated October 8, 2007; or(3) RR Immediate Operational Request SB No. RB.211-72-F048, Revision 11, dated September 9, 2006.
Alternative Methods of Compliance
(k) The Manager, Engine Certification Office, has the authority to approve alternative methods of compliance for this AD if requested using the procedures found in 14 CFR 39.19.
Related Information
(l) European Aviation Safety Agency AD 2007-0260, dated October 2, 2007, also addresses the subject of this AD.
(m) Contact Christopher Spinney, Aerospace Engineer, Engine Certification Office, FAA, Engine and Propeller Directorate, 12 New England Executive Park, Burlington, MA 01803; e-mail:
[email protected]; telephone (781) 238-7175; fax (781) 238-7199, for more information about this AD.
Material Incorporated by Reference
(n) You must use the Rolls-Royce service information in Table 1 of this AD to perform the inspections and terminating action required by this AD. The Director of the Federal Register previouslyapproved the incorporation by reference of Rolls-Royce plc Alert Service Bulletin No. RB.211-72-AF045, Revision 2, dated July 27, 2006, as of December 19, 2006 (71 FR 66229, November 14, 2006).The Director of the Federal Register approved the incorporation by reference of the other service bulletins listed in Table 1 of this AD in accordance with 5 U.S.C. 552(a) and 1 CFR part 51. Contact Rolls-Royce plc P.O. Box 31, Derby, DE24 8BJ, United Kingdom; telephone 44 (0) 1332 242424; Fax 44 (0) 1332 249936 for a copy of this service information. You may review copies at the FAA, New England Region, 12 New England Executive Park, Burlington, MA 01803; or at the National Archives and Records Administration (NARA). For information on the availability of this material at NARA, call (202) 741-6030, or go to: http://www.archives.gov/federal-register/cfr/ibr-locations.html .
Table 1.--Material Incorporated by Reference
Service Bulletin No.
Page
Revision
Date
RB.211-72-AF045
All
2July 27, 2006
RB.211-72-F048
All
11
September 9, 2006
RB.211-72-F117
All
2
September 25, 2006
RB.211-72-F227
All
1
October 8, 2007
