AD 2010-20-11 Airworthiness Directives; Rolls-Royce plc RB211 Trent 700 and Trent 800 Series Turbofan Engines

This AD applies to Rolls-Royce plc model (RR) RB211 Trent 768-60, 772-60, 772B-60, 875-17, 877-17, 884-17, 884B-17, 892-17, 892B-17, and 895-17 turbofan engines that have a compressor shaft listed by part number and serial number in Table 1 of this AD. These engines are installed on, but not limited to, Airbus A330 series and Boeing 777 series airplanes. Reason (d) This AD results from a review of engine manual repair/acceptance limits for titanium compressor shafts by RR. We are issuing this AD to prevent failure of the intermediate-pressure (IP) and high-pressure (HP) shaft, which could result in an overspeed condition, possible uncontained disc failure and damage to the airplane.

Unless already done, do the following actions. (1) Perform a one-time, piece-part, full inspection, including all applicable focus inspection Subtasks, of the IP and HP compressor shafts listed by part number and serial number in Table 1 of this AD before exceeding the compliance period specified in Table 1 of this AD. (2) Guidance on full and focused inspections and acceptance limits can be found in the current, applicable RR engine manual and RR Alert Non-Modification Service Bulletin (NMSB) RB.211-72-AG086. Table 1—List of Affected Shafts Engine series Affected component Part no. Shaft serial no. Compliance period (flight cycles in service after December 4, 2008) Trent 800 1-8 IP Compressor Shaft FK24100 MW0115238 750 Trent 800 1-4 HP Compressor Shaft FK32580 MW0115512 750 Trent 800 1-4 HP Compressor Shaft FK32580 MW0004708 2000 Trent 800 1-4 HP Compressor Shaft FK32580 MW00063868 2500 Trent 800 1-8 IP Compressor Shaft FK24100 DN65507 2500 Trent 800 1-8 IP Compressor Shaft FK24100 DN65158 2500 Trent 800 1-4 HP Compressor Shaft FK32580 MW0125467 3500 Trent 800 1-4 HP Compressor Shaft FW11590 DN65189 3500 Trent 800 1-8 IP Compressor Shaft FK24100 MW0091518 3500 Trent 800 1-8 IP Compressor Shaft FK24100 MW0126365 3500 Trent 800 1-8 IP Compressor Shaft FK24100 DN66422 4750 Trent 800 1-8 IP Compressor Shaft FK24100 MW0203314 4750 Trent 700 1-8 IP Compressor Shaft FK22279 DN63228 3250 Trent 700 1-8 IP Compressor Shaft FK26048 MW0026046 4500 Other FAA AD Provisions (f) Alternative Methods of Compliance (AMOCs): The Manager, Engine Certification Office, FAA, has the authority to approve AMOCs for this AD, if requested using the procedures found in 14 CFR 39.19. Related Information (g) Refer to MCAI EASA Airworthiness Directive 2009-0021 (Corrected February 9, 2009), dated February 6, 2009, and RR Alert NMSB RB.211-72-AG086, for related information. (h) Contact James Lawrence, Aerospace Engineer, Engine Certification Office, FAA, Engine and Propeller Directorate, 12 New England Executive Park, Burlington, MA 01803; e-mail: james.lawrence@faa.gov; telephone (781) 238-7176; fax (781) 238-7199, for more information about this AD. Material Incorporated by Reference (i) None. Issued in Burlington, Massachusetts, on September 17, 2010. Robert J. Ganley, Acting Manager, Engine and Propeller Directorate, Aircraft Certification Service. [FR Doc. 2010-23831 Filed 9-23-10; 8:45 am] BILLING CODE 4910-13-P

Unless already done, do the following actions. (1) Perform a one-time, piece-part, full inspection, including all applicable focus inspection Subtasks, of the IP and HP compressor shafts listed by part number and serial number in Table 1 of this AD before exceeding the compliance period specified in Table 1 of this AD. (2) Guidance on full and focused inspections and acceptance limits can be found in the current, applicable RR engine manual and RR Alert Non-Modification Service Bulletin (NMSB) RB.211-72-AG086. Table 1—List of Affected Shafts Engine series Affected component Part no. Shaft serial no. Compliance period (flight cycles in service after December 4, 2008) Trent 800 1-8 IP Compressor Shaft FK24100 MW0115238 750 Trent 800 1-4 HP Compressor Shaft FK32580 MW0115512 750 Trent 800 1-4 HP Compressor Shaft FK32580 MW0004708 2000 Trent 800 1-4 HP Compressor Shaft FK32580 MW00063868 2500 Trent 800 1-8 IP Compressor Shaft FK24100 DN65507 2500 Trent 800 1-8 IP Compressor Shaft FK24100 DN65158 2500 Trent 800 1-4 HP Compressor Shaft FK32580 MW0125467 3500 Trent 800 1-4 HP Compressor Shaft FW11590 DN65189 3500 Trent 800 1-8 IP Compressor Shaft FK24100 MW0091518 3500 Trent 800 1-8 IP Compressor Shaft FK24100 MW0126365 3500 Trent 800 1-8 IP Compressor Shaft FK24100 DN66422 4750 Trent 800 1-8 IP Compressor Shaft FK24100 MW0203314 4750 Trent 700 1-8 IP Compressor Shaft FK22279 DN63228 3250 Trent 700 1-8 IP Compressor Shaft FK26048 MW0026046 4500 Other FAA AD Provisions (f) Alternative Methods of Compliance (AMOCs): The Manager, Engine Certification Office, FAA, has the authority to approve AMOCs for this AD, if requested using the procedures found in 14 CFR 39.19. Related Information (g) Refer to MCAI EASA Airworthiness Directive 2009-0021 (Corrected February 9, 2009), dated February 6, 2009, and RR Alert NMSB RB.211-72-AG086, for related information. (h) Contact James Lawrence, Aerospace Engineer, Engine Certification Office, FAA, Engine and Propeller Directorate, 12 New England Executive Park, Burlington, MA 01803; e-mail: james.lawrence@faa.gov; telephone (781) 238-7176; fax (781) 238-7199, for more information about this AD. Material Incorporated by Reference (i) None. Issued in Burlington, Massachusetts, on September 17, 2010. Robert J. Ganley, Acting Manager, Engine and Propeller Directorate, Aircraft Certification Service. [FR Doc. 2010-23831 Filed 9-23-10; 8:45 am] BILLING CODE 4910-13-P