2001-08-14 R1: Right injector half manifold and left injector half manifold

2001-08-14R1 Turbomeca S.A.: Amendment 39-14423. Docket No. 2000-NE- 12-AD. Revises AD 2001-08-14, Amendment 39-12218. Applicability This AD applies to Arrius Models 2B, 2B1, and 2F engines. These engines are installed on but not limited to Eurocopter France Model EC120B and Eurocopter Deutschland EC135 T1 rotorcraft. Note 1: This 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 (d) 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 You are responsible for having the actions required by this AD performed within the compliance times specified unless the actions have already been done. To prevent engine flameout and the inability to maintain the 2.5 minutes one engine inoperative (OEI) rating due to blockage of the fuel injection manifolds, do the following: Initial Replacement (a) If not already done in accordance with Turbomeca Alert Service Bulletin (ASB) No. A319 73 2012, Revision 2, dated May 25, 1999, or Revision 3, dated July 21, 2000, or ASB No. A319 73 4001, Revision 3, dated May 25, 1999, or Revision 4, dated October 20, 2000, replace injector manifolds and borescope-inspect the flame tube and the high pressure turbine area within 30 days after the effective date of this AD, or prior to exceeding 200 hours time-in- service (TIS), whichever is later. Do these in accordance with Instructions 2.A. through 2.C. ofTurbomeca ASB No. A319 73 2012, Revision 6, dated August 14, 2004, for Arrius 2B and 2B1 turboshaft engines, and ASB No. A319 73 4001, Revision 7, dated August 14, 2004, for Arrius 2F turboshaft engines, except that replacement may be done at any appropriately rated repair shop. Repetitive Replacements (b) Thereafter, replace injector manifolds, in accordance with Instructions 2.A. through 2.C. of Turbomeca ASB No. A319 73 2012, Revision 6, dated August 14, 2004, for Arrius 2B and 2B1 turboshaft engines, and ASB No. A319 73 4001, Revision 7, dated August 14, 2004, for Arrius 2F turboshaft engines, except that replacement may be done at any appropriately rated repair shop, as follows: (1) For Arrius 2B and 2B1 engines, replace within 200 hours TIS since last injector manifolds replacement. (2) For Arrius 2F engines, replace within 400 hours TIS since last injector manifolds replacement. (3) For all engines, replace injector manifolds before further flight after performing the applicable flight manual or overhaul manual power check if that check shows a negative turbine outlet temperature (TOT) margin or negative T4 margin. Definition (c) For the purposes of this AD, time-in-service (TIS) is defined as the number of engine operating hours on the manifolds since the manifolds were new or since the manifolds were refurbished. Alternative Methods of Compliance (d) 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. Operators must submit their request through an appropriate FAA Principal Maintenance Inspector, who may add comments and then send it to the Manager, Engine Certification Office. Note 2: Information concerning the existence of approved alternative methods of compliance with this airworthiness directive, if any, may be obtained from the Engine Certification Office. Special FlightPermits (e) Special flight permits may be issued in accordance with Sec. Sec. 21.197 and 21.199 of the Federal Aviation Regulations (14 CFR 21.197 and 21.199) to operate the aircraft to a location where the requirements of this AD can be accomplished. Documents That Have Been Incorporated by Reference (f) The inspections and replacements must be done in accordance with the following Turbomeca S.A. mandatory alert service bulletins (ASBs): Document No. Pages Revision Date ASB No. A319 73 2012, Total pages: 8 8 6 August 14, 2004. ASB No. A319 73 4001, Total pages: 8 8 7 August 14, 2004. The Director of the Federal Register approved the incorporation by reference of these service bulletins in accordance with 5 U.S.C. 552(a) and 1 CFR part 51. Copies may be obtained from Turbomeca S.A., 40220 Tarnos, France; telephone: (33) 05 59 64 40 00; fax: (33) 05 59 64 60 80. Copies may be inspected at the FAA, New England Region, Office of the Regional Counsel, 12 New England Executive Park, Burlington, MA; 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 . Note 3: The subject of this AD was addressed by the Direction Generale de L'Aviation Civile (DGAC), which is the airworthiness authority for France, in airworthiness directives AD 1999-217(A) and AD 1999-233(A). Effective Date (g) This airworthiness directive (AD) becomes effective February 23, 2006.