2013-05-19: Bolts

Adoption of the Amendment Accordingly, under the authority delegated to me by the Administrator, the FAA amends 14 CFR part 39 as follows: PART 39--AIRWORTHINESS DIRECTIVES 0 1. The authority citation for part 39 continues to read as follows: Authority: 49 U.S.C. 106(g), 40113, 44701. Sec. 39.13 [Amended] 0 2. The FAA amends Sec. 39.13 by adding the following new AD: 2013-05-19 Rolls-Royce Deutschland Ltd & Co KG: Amendment 39-17391; Docket No. FAA-2012-1031; Directorate Identifier 2012-NE-31-AD. (a) Effective Date This airworthiness directive (AD) becomes effective April 24, 2013. (b) Affected ADs None. (c) Applicability This AD applies to Rolls-Royce Deutschland Ltd & Co KG (RRD) Tay 611-8 turbofan engines, serial numbers 16245, 16256, 16417, 16418, 16584, 16585, 16639, 16640, 16701, 16702, 16813, 16814, 16853, 16854, 16879, 16880, 16898, 16905, 16906, 16911, 16923, 16935, and 16936, with a date of the last shop visit before December 8, 2006. (d) Reason This AD was prompted by a recent quality review determination that bolts with reduced material properties may have been installed in some engines. We are issuing this AD to prevent uncontained turbine disc fracture and damage to the airplane. (e) Actions and Compliance Unless already done, for engines with a date of the last shop visit before December 8, 2006, do the following actions: (1) If engine cycles accumulated since the last engine shop visit is 5,400 cycles or more on the effective date of this AD, inspect the bolts installed in the low-pressure turbine (LPT) stage 1 static seal and high-pressure turbine (HPT) stage 1 air seal support within 100 engine cycles-in-service after the effective date of this AD. (2) If engine cycles accumulated since the last engine shop visit is fewer than 5,400 cycles on the effective date of this AD, inspect the bolts installed in the LPT stage 1 static seal and HPT stage 1air seal support before accumulating 5,500 engine cycles since the last engine shop visit. (3) If you find any broken bolt, brown bolt, or bolt with a rough oxidized surface, then replace all bolts of the inspected engine flange with new bolts before further flight. (f) Installation Prohibition After the effective date of this AD, do not install any HPT module and/or LPT module into any engine, or any engine onto an airplane, unless the bolts have been inspected and replaced if necessary, as specified in paragraph (e) of this AD. (g) Alternative Methods of Compliance (AMOCs) The Manager, Engine Certification Office, FAA, may approve AMOCs to this AD. Use the procedures found in 14 CFR 39.19 to make your request. (h) Related Information (1) For more information about this AD, contact Frederick Zink, Aerospace Engineer, Engine Certification Office, FAA, Engine & Propeller Directorate, 12 New England Executive Park, Burlington, MA 01803; phone: 781-238-7779; fax: 781-238-7199; email: frederick.zink@faa.gov. (2) Refer to European Aviation Safety Agency AD 2012-0163, dated August 28, 2012, and RRD Alert Service Bulletin TAY-72-A1696, Revision 1, dated June 11, 2012, for related information. (3) For service information identified in this AD, contact Rolls-Royce Deutschland Ltd & Co KG, Eschenweg 11, Dahlewitz, 15827 Blankenfelde-Mahlow, Germany; phone: 49 0 33-7086-1200 (direct 1016); fax: 49 0 33-7086-1212. You may view this service information at the FAA, Engine & Propeller Directorate, 12 New England Executive Park, Burlington, MA. For information on the availability of this material at the FAA, call 781-238-7125. (i) Material Incorporated by Reference None.