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The Amendment \n\n\n\tAccordingly, under the authority delegated to me by the Administrator, the FAA amends 14 CFR part 39 as follows: \n\nPART 39--AIRWORTHINESS DIRECTIVES \n\n0 1. The authority citation for part 39 continues to read as follows: \n\n\n\tAuthority: 49 U.S.C. 106(g), 40113, 44701. \n\n\n\nSec. 39.13 (Amended) \n\n0 2. The FAA amends Sec. 39.13 by: 0 a. Removing Airworthiness Directive 2019-08-13, Amendment 39-19634 (84 FR 24007, May 24, 2019); and 0 b. Adding the following new airworthiness directive: \n\n2020-24-06 Textron Aviation, Inc., (Type Certificate Previously Held by Cessna Aircraft Company): Amendment 39-21336; Docket No. FAA- 2020-0493; Project Identifier 2019-CE-046-AD. \n\n(a) Effective Date \n\n\n\tThis airworthiness directive (AD) is effective December 28, 2020. \n\n(b) Affected ADs \n\n\n\tThis AD replaces AD 2019-08-13, Amendment 39-19634 (84 FR 24007, May 24, 2019) (AD 2019-08-13). \n\n(c) Applicability \n\n\n\tThis AD applies to Textron Aviation, Inc. (type certificate previously held by Cessna Aircraft Company) Models 525, 525A, and 525B airplanes, certificated in any category, with Tamarack active load alleviation system (ATLAS) winglets installed in accordance with Supplemental Type Certificate SA03842NY. \n\n(d) Subject \n\n\n\tAir Transport Association of America (ATA) Code 27: Flight Controls. \n\n(e) Reason \n\n\n\tThis AD was prompted by mandatory continuing airworthiness information (MCAI) issued by the aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as malfunction of the ATLAS, which could cause difficulty for the pilot to recover the airplane to safe flight. The FAA is issuing this AD to prevent malfunction of the ATLAS \n\n((Page 74598)) \n\nand to ensure the Tamarack Active Camber Surface (TACS) remains in a faired position in the case of inadvertent power loss to the ATLAS, which could lead to loss of control of the airplane.(f) Compliance \n\n\n\tUnless already done, do the following actions in paragraphs (g) and (h) of this AD. \n\n(g) Modifications \n\n\n\tBefore further flight after the effective date of this AD, do the following corrective actions: \n\t(1) Determine whether the serial number of the TACS control unit (TCU) assembly is listed in table 7.8. of Cranfield Aerospace Solutions Limited (Cranfield) Service Bulletin CAS/SB1480, Issue A, dated July 2019 (Cranfield CAS/SB1480, Issue A). If the serial number of the TCU assembly is not listed in table 7.8., replace the TCU assembly with a TCU assembly that has a part number listed in section 5 and a serial number listed in table 7.8 of Cranfield CAS/ SB1480, Issue A. \n\t(2) Determine whether centering strips have been installed on the trailing edge of the TACS by following step 7.4. of Cranfield CAS/SB1480, Issue A. If the trailing edge of the TCAS does not have centering strips, install Cranfield modification CAeM/Cessna/1475. \n\n(h) Revision to the Maintenance Manual Supplement \n\n\n\t(1) Before further flight after the effective date of this AD, revise the Airworthiness Limitations section (ALS) and Instructions for Continued Airworthiness for your airplane by adding the updates in Tamarack Aerospace Group Cessna 525, 525A & 525B ATLAS Winglet Maintenance Manual Supplement, Report Number: TAG-1100-0101, Issue G, dated September 3, 2019. \n\t(2) Thereafter, except as provided in paragraph (i) of this AD, no alternative inspection intervals may be approved for the centering strips. Inserting a later issue of the ALS with language identical to that contained in Issue G for the centering strips is acceptable for compliance with the requirements of this paragraph. \n\t(3) The airplane flight manual revision and placard required by AD 2019-08-13, if installed, may be removed after completing the modifications required by paragraph (g) of this AD. \n\n(i) Alternative Methods of Compliance (AMOCs) \n\n\n\tThe Manager, New York ACOBranch, FAA, has the authority to approve AMOCs for this AD, if requested using the procedures found in 14 CFR 39.19. Send information to ATTN: Program Manager, Continued Operational Safety FAA, New York ACO Branch, 1600 Stewart Avenue, Suite 410, Westbury, New York 11590; telephone: (516) 287- 7321; fax: (516) 794-5531; email: 9-avs-nyaco-cos@faa.gov. Before using any approved AMOC on any airplane to which the AMOC applies, notify your appropriate principal inspector (PI) in the FAA Flight Standards District Office (FSDO), or lacking a PI, your local FSDO. \n\n\n\t(j) Related Information \n\n\n\tRefer to European Union Aviation Safety Agency (EASA) AD No. 2019-0086R1, dated August 9, 2019, for related information. You may examine the MCAI on the internet at https://www.regulations.gov by searching for and locating Docket No. FAA-2020-0493. \n\n(k) Material Incorporated by Reference \n\n\n\t(1) The Director of the Federal Register approved the incorporation by reference of the service information listed in this paragraph under 5 U.S.C. 552(a) and 1 CFR part 51. \n\t(2) You must use this service information as applicable to do the actions required by this AD, unless the AD specifies otherwise. \n\t(i) Cranfield Aerospace Solutions Limited Service Bulletin CAS/ SB1480, Issue A, dated July 2019. \n\t(ii) Tamarack Aerospace Group Cessna 525, 525A, & 525B ATLAS Winglet Maintenance Manual Supplement, Report Number: TAG-1100-0101, Issue G, dated September 3, 2019. \n\t(3) For Cranfield Aerospace Solutions Limited and Tamarack Aerospace Group service information identified in this AD, contact Tamarack Aerospace Group, Inc. 2021 Industrial Drive, Sandpoint, Idaho 83864; telephone: (208) 255-4400; email: support@tamarackaero.com; internet: https://tamarackaero.com. \n\t(4) You may view this service information at the FAA, Airworthiness Products Section, Operational Safety Branch, 901 Locust, Kansas City, Missouri 64106. For information on the availability of this material at the FAA, call (816) 329-4148. \n\t(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, email: fedreg.legal@nara.gov, or go to: https://www.archives.gov/federal-register/cfr/ibr-locations.html. \n\n\n\tIssued on November 13, 2020. Lance T. Gant, Director, Compliance & Airworthiness Division, Aircraft Certification Service. (FR Doc. 2020-25689 Filed 11-20-20; 8:45 am) BILLING CODE 4910-13-P