AD 2009-14-11 Airworthiness Directives; Turbomeca S.A. ARRIUS 2F Turboshaft Engines

This AD applies to Turbomeca S.A. ARRIUS 2F turboshaft engines with P3 air pipe, part number 0319719180, installed. These engines are installed on, but not limited to, Eurocopter EC120B helicopters. Reason (d) Rubs between the pipe and the bulkhead may lead to premature wearing and finally rupture of the P3 air pipe. The loss of P3 air pressure would then force the fuel control system to idle which could have a detrimental effect in critical phases of flight. We are issuing this AD to prevent an uncommanded power loss, which could result in an emergency autorotation landing or accident.

Unless already done, do the following actions within 100 operating hours after the effective date of this AD. Use paragraphs 2.B.(1) through 2.C.(2) of Turbomeca Mandatory Service Bulletin No. 319 75 4810, dated May 14, 2008. (1) Visually inspect P3 air pipe (first section) and RH rear half-wall. (2) Inspect play between P3 air pipe (first section) and RH rear half-wall. (3) Replace P3 air pipe (first section) if any damage is found. (4) Readjust the first section of the P3 air pipe if the inspected clearance is found to be not compliant. (5) If the play after readjusting the first section of the P3 air pipe is still less than 0.5 mm, repeat paragraphs (e)(1) through (e)(4) of this AD within intervals of 100 hours time-since-last inspection. (6) Replace RH rear half-wall if any damage is found. FAA AD Differences (f) None. Other FAA AD Provisions (g) 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 (h) Refer to MCAI EASA Airworthiness Directive 2008-0134R1, dated February 17, 2009, and Turbomeca S.A. Mandatory Service Bulletin No. 319 75 4810, dated May 14, 2008, for related information. Contact Turbomeca, 40220 Tarnos, France; telephone 33 (0)5 59 74 40 00; telex 570 042; fax 33 (0)5 59 74 45 15, for a copy of this service information. (i) 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 (j) You must use Turbomeca Mandatory Service Bulletin No. 319 75 4810, dated May 14, 2008 to do the actions required by this AD, unless the AD specifies otherwise. (1) The Director of the Federal Register approved the incorporation by reference of this service information under 5 U.S.C. 552(a) and 1 CFR part 51. (2) For service information identified in this AD, contact Turbomeca, 40220 Tarnos, France; telephone 33 (0)5 59 74 40 00; telex 570 042; fax 33 (0)5 59 74 45 15. (3) You may review copies at the FAA, New England Region, 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. Issued in Burlington, Massachusetts, on June 30, 2009. Francis A. Favara, Manager, Engine and Propeller Directorate, Aircraft Certification Service. [FR Doc. E9-16113 Filed 7-14-09; 8:45 am] BILLING CODE 4910-13-P

Unless already done, do the following actions within 100 operating hours after the effective date of this AD. Use paragraphs 2.B.(1) through 2.C.(2) of Turbomeca Mandatory Service Bulletin No. 319 75 4810, dated May 14, 2008. (1) Visually inspect P3 air pipe (first section) and RH rear half-wall. (2) Inspect play between P3 air pipe (first section) and RH rear half-wall. (3) Replace P3 air pipe (first section) if any damage is found. (4) Readjust the first section of the P3 air pipe if the inspected clearance is found to be not compliant. (5) If the play after readjusting the first section of the P3 air pipe is still less than 0.5 mm, repeat paragraphs (e)(1) through (e)(4) of this AD within intervals of 100 hours time-since-last inspection. (6) Replace RH rear half-wall if any damage is found. FAA AD Differences (f) None. Other FAA AD Provisions (g) 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 (h) Refer to MCAI EASA Airworthiness Directive 2008-0134R1, dated February 17, 2009, and Turbomeca S.A. Mandatory Service Bulletin No. 319 75 4810, dated May 14, 2008, for related information. Contact Turbomeca, 40220 Tarnos, France; telephone 33 (0)5 59 74 40 00; telex 570 042; fax 33 (0)5 59 74 45 15, for a copy of this service information. (i) 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 (j) You must use Turbomeca Mandatory Service Bulletin No. 319 75 4810, dated May 14, 2008 to do the actions required by this AD, unless the AD specifies otherwise. (1) The Director of the Federal Register approved the incorporation by reference of this service information under 5 U.S.C. 552(a) and 1 CFR part 51. (2) For service information identified in this AD, contact Turbomeca, 40220 Tarnos, France; telephone 33 (0)5 59 74 40 00; telex 570 042; fax 33 (0)5 59 74 45 15. (3) You may review copies at the FAA, New England Region, 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. Issued in Burlington, Massachusetts, on June 30, 2009. Francis A. Favara, Manager, Engine and Propeller Directorate, Aircraft Certification Service. [FR Doc. E9-16113 Filed 7-14-09; 8:45 am] BILLING CODE 4910-13-P