2015-20-06: Nacelles/Pylons

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): 2015-20-06 Viking Air Limited (Type Certificate Previously Held by Bombardier, Inc.): Amendment 39-18285. Docket No. FAA-2015-0684; Directorate Identifier 2014-NM-215-AD. (a) Effective Date This AD becomes effective November 10, 2015. (b) Affected ADs None. (c) Applicability This AD applies to all Viking Air Limited (Type Certificate previously held by Bombardier, Inc.) Model DHC-7-1 and DHC-7-100 airplanes, certificated in any category. (d) Subject Air Transport Association (ATA) of America Code 54, Nacelles/ Pylons. (e) Reason This AD was prompted by reports of cracks that were discovered in the outboard nacelles upper longeron channels and angles. We are issuing this AD to detect and correct cracks in the outboard nacelles upper longeron channels and angles, which could lead to the loss of stiffness in the forward engine mount; and possible catastrophic failure. (f) Compliance Comply with this AD within the compliance times specified, unless already done. (g) Inspection and Repair Within 6 months after the effective date of this AD, do a one- time detailed visual inspection for cracking in the outboard nacelles upper longeron channels and angles, in accordance with the Accomplishment Instructions of Viking Air Limited Service Bulletin V7-54-02, Revision NC, dated December 14, 2012. If any cracking is found during the inspection required by this paragraph: Before further flight, repair using a method approved by the Manager, New York Aircraft Certification Office (ACO), ANE-170, FAA; or Transport Canada Civil Aviation (TCCA); or Viking Air Limited's (Type Certificate Previously Held by Bombardier, Inc.) TCCA Design Approval Organization (DAO). (h) Other FAA AD Provisions The following provisions also apply to this AD: (1) Alternative Methods of Compliance (AMOCs): The Manager, New York Aircraft Certification Office (ACO), ANE-170, FAA, has the authority to approve AMOCs for this AD, if requested using the procedures found in 14 CFR 39.19. In accordance with 14 CFR 39.19, send your request to your principal inspector or local Flight Standards District Office, as appropriate. If sending information directly to the ACO, send it to ATTN: Program Manager, Continuing Operational Safety, FAA, New York ACO, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590; telephone 516-228-7300; fax 516-794-5531. Before using any approved AMOC, notify your appropriate principal inspector, or lacking a principal inspector, the manager of the local flight standards district office/certificate holding district office. The AMOC approval letter must specifically reference this AD. (2) Contacting the Manufacturer: For any requirement in this AD to obtain corrective actions from a manufacturer, the action must be accomplished using a method approved by the Manager, New York ACO, ANE-170, FAA; or TCCA; or Viking Air Limited's (Type Certificate Previously Held by Bombardier, Inc.) TCCA DAO. If approved by the DAO, the approval must include the DAO-authorized signature. (i) Special Flight Permits Special flight permits, as described in Section 21.197 and Section 21.199 of the Federal Aviation Regulations (14 CFR 21.197 and 21.199), are not allowed. (j) Related Information Refer to Mandatory Continuing Airworthiness Information (MCAI) Canadian Airworthiness Directive CF-2014-34, dated October 2, 2014, for related information. This MCAI may be found in the AD docket on the Internet at http://www.regulations.gov/#!documentDetail;D=FAA- 2015-0684-0002. (k) Material Incorporated by Reference (1) The Director of the Federal Register approved the incorporation by reference (IBR) of the service information listed in this paragraph under 5 U.S.C. 552(a) and 1 CFR part 51. (2) You must use this service information as applicable to do the actions required by this AD, unless this AD specifies otherwise. (i) Viking Air Limited Service Bulletin V7-54-02, Revision NC, dated December 14, 2012. (ii) Reserved. (3) For service information identified in this AD, contact Viking Air Limited, 9574 Hampden Road, Sidney, British Columbia V8L 8V5, Canada; telephone 250-656-7227; fax 250-656-0673; email technical.publications@vikingair.com; Internet http://www.vikingair.com. (4) You may view this service information at the FAA, Transport Airplane Directorate, 1601 Lind Avenue SW., Renton, WA. For information on the availability of this material at the FAA, call 425-227-1221. (5) You may viewthis service information that is incorporated by reference 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. [[Page 60286]]