Airworthiness directives › 2013-08-22
AD 2013-08-22 Airworthiness Directives; Turbomeca S.A. Turboshaft Engines
Applicability*9
This AD applies to Turbomeca S.A. Arriel 1A1, 1A2, 1B, 1C, 1C1, 1C2, 1D, 1D1, 1E2, 1K1, 1S, and 1S1 turboshaft engines that have incorporated Modification TU 207 or TU 243, or have incorporated Turbomeca Service Bulletin (SB) No. 292 80 0168 or SB No. 292 80 0190.
Compliance
The Manager, Engine Certification Office, may approve AMOCs for this AD. Use the procedures found in 14 CFR 39.19 to make your request.
Required actions
(1) For more information about this AD, contact Sanjana Murthy, Aerospace Engineer, Engine Certification Office, FAA, Engine & Propeller Directorate, 12 New England Executive Park, Burlington, MA 01803; phone: 781-238-7750; fax: 781-238-7199; email: sanjana.murthy@faa.gov. (2) Refer to European Aviation Safety Agency AD 2012-0187R2, dated December 6, 2012, and Turbomeca S.A. SB No. 292 80 0168 and SB No. 292 80 0190, for related information. (3) For service information identified in this AD, contact Turbomeca S.A., 40220 Tarnos, France; phone: 33 (0) 5 59 74 40 00; telex: 570 042; fax: 33 (0) 5 59 74 45 15. 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.
Unsafe condition
(1) If a tachometer is installed on the engine, but is not used to count cycles, then no further action is required. (2) During the post-flight maintenance inspection after the last flight of each day, verify that the cycles counted by the engine's tachometer unit agree with the cycles counted by the primary counting method. (3) If the numbers are different, use the primary counting method thereafter to determine all cycle counts. Do not use the values from the tachometer cycle-counting feature. (4) If the engine tachometer cycle-counting feature remains accurate, then every 1,000 operating hours, perform a ground-run functional check of the tachometer unit cycle-counting feature in addition to the daily inspections in paragraph (e)(2) of this AD. If the tachometer cycle-counting feature fails the check, thereafter, use only the primary cycle-counting method to count cycles. (5) If the tachometer is replaced, follow the instructions in paragraphs (e)(2), (e)(3), and (e)(4) of this AD.
Affected ADs
None.
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