Airworthiness directives › 2005-17-15
AD 2005-17-15 Airworthiness Directives; Turbomeca Arrius 2F Turboshaft Engines
Applicability*9
This AD applies to Turbomeca S.A. Arrius 2F turboshaft engines. These engines are installed on, but not limited to, Eurocopter EC120 helicopters.
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. Check Position of Fuel Control Unit (FCU) Fuel Filter (f) Within 25 engine-operating-hours after the effective date of this AD, remove the fuel filter-holder assembly and check that the FCU fuel filter is in the correct position using Paragraph 2 of Turbomeca Mandatory Alert Service Bulletin No. A319 73 4823, dated May 11, 2005. (g) Within 30 days, revise your engine maintenance manual to include a dimensional check to ensure the correct position of the FCU filter after every installation of the fuel filter element into the fuel filter-holder assembly. The latest revision of the Arrius 2F maintenance manual includes the dimensional check in Sub-Task 73-23-06-901-002 paragraph (2)(e). Alternative Methods of Compliance (AMOCs) (h) The Manager, Engine Certification Office, has the authority to approve alternative methods of compliance for this AD if requested using the procedures found in 14 CFR 39.19. Related Information (i) DGAC airworthiness directive No. F-2005-088, dated June 8, 2005, also addresses the subject of this AD. Material Incorporated by Reference (j) You must use Turbomeca Mandatory Alert Service Bulletin No. A319 73 4823, dated May 11, 2005, to perform the check required by this AD. The Director of the Federal Register approved the incorporation by reference of this service bulletin in accordance with 5 U.S.C. 552(a) and 1 CFR part 51. Contact Turbomeca S.A., 40220 Tarnos, France; telephone 33 05 59 74 40 00, fax 33 05 59 74 45 15, for a copy of this service information. You may review copies at the Docket Management Facility; U.S. Department of Transportation, 400 Seventh Street, SW., Nassif Building, Room PL-401, Washington, DC 20590-0001, on the internet at http://dms.dot.gov ; 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/code_of_federal_regulations/ibr_locations.html. Issued in Burlington, Massachusetts, on August 17, 2005. Richard Noll, Acting Manager, Engine and Propeller Directorate, Aircraft Certification Service. [FR Doc. 05-16902 Filed 8-25-05; 8:45 am] BILLING CODE 4910-13-P
Unsafe condition
This AD results from incorrect positioning of the FCU filter that could limit the fuel flow downstream of the filter. We are issuing this AD to detect incorrect positioning of the FCU filter that could lead to an undetected limitation of fuel flow, limiting the maximum power available in-flight, which could result in the inability to continue safe flight, avoid obstacles or land safely.
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