2001-18-06: Engine Life-limited Rotating Parts

AD 2001-18-06 GE Aircraft Engines: Amendment 39-12432. Docket No. 99-NE-13-AD. Supersedes AD 69-23-02, Amendment 39-1086 and AD 79-23-04, Amendment 39-3610. Applicability: GE Aircraft Engines T58 and CT58 series turboshaft engine installed on, but not limited to Boeing--Vertol V-107 series, Kaman H-2, Bell UH-1F series; and Sikorsky CH/HH-3 series, S-61 A/H-3/CH124/CH-3/HH-3L/N/R series, and S-62 series rotorcraft. Note 1: This airworthiness directive (AD) applies to each engine identified in the preceding applicability provision, regardless of whether it has been modified, altered, or repaired in the area subject to the requirements of this AD. For engines that have been modified, altered, or repaired so that the performance of the requirements of this AD is affected, the owner/operator must request approval for an alternative method of compliance in accordance with paragraph (c) of this AD. The request should include an assessment of the effect of the modification, alteration, or repair on the unsafe condition addressed by this AD; and, if the unsafe condition has not been eliminated, the request should include specific proposed actions to address it. Compliance Compliance with this AD is required as indicated, unless already accomplished. To prevent low-cycle fatigue failure of rotating parts that could result in uncontained engine failure and damage to the rotorcraft, accomplish the following: Calculating New Life Limits for Rotating Parts (a) Within 50 hours time-in-service after the effective date of this AD, calculate the new cycles-since-new for life-limited rotating parts in accordance with the Accomplishment Instructions, 2.A. through 2.G. of GEAE Service Bulletin (CT58) 72-162 CEB-258, revision 9, dated October 6, 1998. (b) Remove any part from service that exceeds the new calculated life limit and replace it with a serviceable part. Alternative Methods of Compliance (c) An alternative method of compliance or adjustment of the compliance time that provides an acceptable level of safety may be used if approved by the Manager, Engine Certification Office (ECO). Operators shall submit their requests through an appropriate FAA Principal Maintenance Inspector, who may add comments and then send it to the Manager, ECO. Note 2: Information concerning the existence of approved alternative methods of compliance with this airworthiness directive, if any, may be obtained from the ECO. (d) Special flight permits may be issued in accordance with Secs. 21.197 and 21.199 of the Federal Aviation Regulations (14 CFR 21.197 and 21.199) to operate the rotorcraft to a location where the requirements of this AD can be accomplished. Documents That Have Been Incorporated By Reference (e) The calculation shall be done in accordance with the Accomplishment Instructions, 2.A. through 2.G. of GEAE Service Bulletin (CT58) 72-162 CEB-258, revision 9, dated October 6, 1998 as follows: DocumentNo. Pages Revision Date (CT58) 72-162 CEB-258 1-4 9 October 6, 1998. (CT58) 72-162 CEB-258 5 5 May 12, 1994. (CT58) 72-162 CEB-258 6 7 April 25, 1997. (CT58) 72-162 CEB-258 7-8 5 May 12, 1994. (CT58) 72-162 CEB-258 9-11 7 April 25, 1997. (CT58) 72-162 CEB-258 12-16 5 May 12, 1994. (CT58) 72-162 CEB-258 17 7 April 25, 1997. (CT58) 72-162 CEB-258 18 9 October 6, 1998. (CT58) 72-162 CEB-258 19-20 5 May 12, 1994. (CT58) 72-162 CEB-258 21 8 June 16, 1997. (CT58) 72-162 CEB-258 22-24 5 May 12, 1994. (CT58) 72-162 CEB-258 25-26 9 October 6, 1998. (CT58) 72-162 CEB-258 27 5 May 12, 1994. Total pages: 27. This incorporation by reference was approved by the Director of the Federal Register in accordance with 5 U.S.C. 552(a) and 1 CFR part 51. Copies may be obtained from GE Aircraft Engines, General Electric Company, 1000 Western Avenue, Lynn, MA 01910. Copies may be inspected at the FAA, New England Region, Office of theRegional Counsel, 12 New England Executive Park, Burlington, MA; or at the Office of the Federal Register, 800 North Capitol Street, NW, suite 700, Washington, DC. (f) This amendment becomes effective on October 18, 2001.