2012-24-06: Flight Controls

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 AD: 2012-24-06 Saab AB, Saab Aerosystems: Amendment 39-17276. Docket No. FAA-2012-0672; Directorate Identifier 2011-NM-261-AD. (a) Effective Date This airworthiness directive (AD) becomes effective January 14, 2013. (b) Affected ADs None. (c) Applicability This AD applies to Saab AB, Saab Aerosystems Model 340A (SAAB/ SF340A) and SAAB 340B airplanes, certificated in any category, as identified in paragraphs (c)(1) and (c)(2) of this AD, except airplanes that have SAAB Modification 2650 and/or 2859 installed. This AD does not apply to airplanes with serial numbers 170, 342, 362, 363, 367, 372, 379, 385, 395, 405, 409, 431, and 455. (1) Model 340A (SAAB/SF340A) airplanes, serial numbers 004 through 159 inclusive. (2) Model SAAB 340B airplanes, serial numbers 160 through 459 inclusive. (d) Subject Air Transport Association (ATA) of America Code 27: Flight Controls. (e) Reason This AD was prompted by reports of stall events during icing conditions where the natural stall warning (buffet) was not identified. We are issuing this AD to prevent natural stall events when operating in icing conditions, which, if not corrected, could result in loss of control of the airplane. (f) 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. (g) Replacement (1) For airplanes with basic wing tips: Within 24 months after the effective date of this AD, replace all stall warning computers (SWCs) having part number (P/N) 0020AK, 0020AK1, 0020AK2, or 0020AK4, with a new SWC P/N 0020AK6, in accordance with the Accomplishment Instructions of Saab Service Bulletin 340-27-098, Revision 01, dated April 13, 2012. (2) For airplanes with extended wing tips: Within 24 months after the effective date of this AD, replace the SWC P/N 0020AK3 MOD 1 with a new SWC P/N 0020AK7, in accordance with the Accomplishment Instructions of Saab Service Bulletin 340-27-099, Revision 01, dated April 13, 2012. (h) Concurrent Modification Before or concurrently with the accomplishment of the requirements of paragraph (g) of this AD: Modify the airplane in accordance with the Accomplishment Instructions of Saab Service Bulletin 340-27-097, Revision 03, dated April 19, 2012. (i) Parts Installation Prohibition After accomplishing the replacement required by paragraph (g) of this AD and the modification required by paragraph (h) of this AD, do not install any SWC having P/N 0020AK, 0020AK1, 0020AK2, 0020AK4, or 0020AK3 MOD 1 on any airplane. (j) Credit for Previous Actions This paragraph provides credit for actions required by paragraph (h) of this AD, if those actions were performed before the effective date of this AD using the service bulletin specified in paragraph (j)(1), (j)(2), or (j)(3) of this AD, which are not incorporated by reference in this AD. (1) Saab Service Bulletin 340-27-097, dated September 1, 2011. (2) Saab Service Bulletin 340-27-097, Revision 01, dated September 26, 2011. (3) Saab Service Bulletin 340-27-097, Revision 02, dated October 7, 2011. (k) Other FAA AD Provisions The following provisions also apply to this AD: (1) Alternative Methods of Compliance (AMOCs): The Manager, ANM- 116, International Branch, Transport Airplane Directorate, 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 International Branch, send it to ATTN: Shahram Daneshmandi, Aerospace Engineer, International Branch, ANM-116, Transport Airplane Directorate, FAA, 1601 Lind Avenue SW., Renton, Washington 98057-3356; telephone (425) 227-1112; fax (425) 227-1149. Information may be emailed to: [email protected]. Before using any approved AMOC, notify your appropriate principal inspector, or lacking a principal inspector, the manager of the local flight standards district office/ [[Page 73282]] certificate holding district office. The AMOC approval letter must specifically reference this AD. (2) Airworthy Product: For any requirement in this AD to obtain corrective actions from a manufacturer or other source, use these actions if they are FAA-approved. Corrective actions are considered FAA-approved if they are approved by the State of Design Authority (or their delegated agent). You are required to assure the product is airworthy before it is returned to service. (l) Related Information Refer to MCAI European Aviation Safety Agency Airworthiness Directive 2011-0219, dated November 11, 2011, and the service information specified in paragraphs (l)(1) through (l)(3) of this AD, for related information. (1) Saab Service Bulletin 340-27-097, Revision 03, dated April 19, 2012. (2) Saab Service Bulletin 340-27-098, Revision 01, dated April 13, 2012. (3) Saab Service Bulletin 340-27-099, Revision 01, dated April 13, 2012. (m) 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 the AD specifies otherwise. (i) Saab Service Bulletin 340-27-097, Revision 03, datedApril 19, 2012. (ii) Saab Service Bulletin 340-27-098, Revision 01, dated April 13, 2012. (iii) Saab Service Bulletin 340-27-099, Revision 01, dated April 13, 2012. (3) For service information identified in this AD, contact Saab AB, Saab Aeronautics, SE-581 88, Link[ouml]ping, Sweden; telephone +46 13 18 5591; fax +46 13 18 4874; email [email protected]; Internet http://www.saabgroup.com. (4) You may review copies of the 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 view this 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.