Airworthiness directives › 2003-15-09
AD 2003-15-09 Airworthiness Directives; Rolls-Royce plc Trent 768-60, Trent 772-60, and Trent 772B-60 Turbofan Engines
Applicability*9
This AD applies to Rolls-Royce plc Trent 768-60, Trent 772-60, and Trent 772B-60 turbofan engines. These engines are installed on, but not limited to Airbus 330 series airplanes.
Compliance
You are responsible for having the actions required by this AD performed within the compliance times and cycles specified in paragraphs (f) and (g) of this AD, unless the actions have already been done. Initial Surge Margin Testing (f) Perform initial surge margin testing. Use paragraph 3. Accomplishment Instructions of Rolls-Royce plc Service Bulletin No. RB.211-71-D509, Revision 2, dated April 17, 2002 for testing, at the following intervals: (1) Before further flight, for engines that have accumulated more than 2,000 cycles-since-new on the effective date of this AD; and for engines that have accumulated more than 1,000 cycles-since-overhaul of the high pressure compressor casings and blades. (2) At or before engines accumulating 2,000 cycles-since-new; and for engines that have had level 3 overhaul of the high pressure compressor casings and blades, at or before the engine accumulating 1,000 cycles-since-overhaul. Repetitive Surge Margin Testing (g) Perform repetitive surge margin testing at intervals not to exceed 130 cycles-since-last surge margin test. Use paragraph 3 of the Accomplishment Instructions of Rolls-Royce plc Service Bulletin No. RB.211-71-D509, Revision 2, dated April 17, 2002, for testing. Alternative Methods of Compliance (AMOCs) (h) You must request AMOCs as specified in 14 CFR part 39.19. All AMOCs must be approved by the Manager, Engine Certification Office, FAA. Material Incorporated by Reference (i) Rolls-Royce plc Service Bulletin No. RB.211-71-D509, Revision 2, dated April 17, 2002. The Director of the Federal Register approved the incorporation by reference of this service bulletin in accordance with 5 U.S.C. 552(a) and 1 CFR part 51. You may get a copy from Rolls-Royce plc, PO Box 31, Derby, England, DE248BJ; telephone: 011-44-1332-242424; fax; 011-44-1332-245-418. You may review copies at FAA, New England Region, Office of the Regional Counsel, 12 New England Executive Park, Burlington, MA; or at the Office of the Federal Register, 800 North Capitol Street, suite 700, Washington, DC. Related Information (j) CAA airworthiness directive 005-09-2001, dated April 17, 2002, also addresses the subject of this AD. Issued in Burlington, Massachusetts, on July 24, 2003. Francis A. Favara, Acting Manager, Engine and Propeller Directorate, Aircraft Certification Service. [FR Doc. 03-19475 Filed 8-5-03; 8:45 am] BILLING CODE 4910-13-P
Unsafe condition
This AD is prompted by several reports of low power surges. We are issuing this AD to prevent a possible dual-engine in-flight surge, which could result in loss of control of the airplane.
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