2016-06-09: Oil leakage from the low pressure oil system

Adoption of the Amendment Accordingly, under the authority delegated to me by the Administrator, the FAA amends 14 CFR part 39 as follows: PART 39--AIRWORTHINESS DIRECTIVES 0 1. The authority citation for part 39 continues to read as follows: Authority: 49 U.S.C. 106(g), 40113, 44701. Sec. 39.13 [Amended] 0 2. The FAA amends Sec. 39.13 by adding the following new airworthiness directive (AD): 2016-06-09 Turbomeca S.A.: Amendment 39-18440; Docket No. FAA-2016- 2701; Directorate Identifier 2016-NE-03-AD. (a) Effective Date This AD is effective April 6, 2016. (b) Affected ADs None. (c) Applicability This AD applies to all Turbomeca S.A. Makila 2A and 2A1 turboshaft engines that have incorporated Turbomeca S.A. Service Bulletin No. 298 79 2831, Version B, dated November 13, 2015, or earlier. (d) Reason This AD was prompted by two occurrences of in-flight shutdowns as a result of the nut, attaching the swivel union to the power turbine module M04, coming loose. We are issuing this AD to prevent loosening of the nut, and oil leakage from the low pressure oil system, which could lead to in-flight shutdown of the engine and forced landing. (e) Actions and Compliance Comply with this AD within the compliance times specified, unless already done. (1) Within 30 engine hours or 7 days after the effective date of this AD, whichever occurs first, apply 15 Newton-meters torque to the nut, part number 9560130990, attaching the swivel union to the engine power turbine module M04. Use a backup wrench to prevent the swivel union from rotating. [[Page 15156]] (f) Alternative Methods of Compliance (AMOCs) The Manager, Engine Certification Office, FAA, may approve AMOCs for this AD. Use the procedures found in 14 CFR 39.19 to make your request. You may email your request to: [email protected]. (g) Related Information (1) For more information about this AD, contact Besian Luga, Aerospace Engineer, Engine Certification Office, FAA, Engine & Propeller Directorate, 1200 District Avenue, Burlington, MA 01803; phone: 781-238-7750; fax: 781-238-7199; email: [email protected]. (2) Refer to MCAI European Aviation Safety Agency AD 2016-0016, dated January 15, 2016, for more information. You may examine the MCAI in the AD docket on the Internet at http://www.regulations.gov by searching for and locating it in Docket No. FAA-2016-2701. (3) Turbomeca S.A. Alert Mandatory Service Bulletin No. A298 79 2835, Version A, dated January 14, 2016, which is not incorporated by reference in this AD, can be obtained from Turbomeca S.A., using the contact information in paragraph (g)(4) of this AD. (4) 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 16. (5) You may view this service information at the FAA, Engine & Propeller Directorate, 1200 District Avenue, Burlington, MA 01803. For information on the availability of this material at the FAA, call 781-238-7125. (h) Material Incorporated by Reference None.