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 2019-12-09, Amendment 39-19664 (84 FR 32260, July 8, 2019); and 0 b. Adding the following new airworthiness directive: \n\n2021-05-17 Rockwell Collins, Inc.: Amendment 39-21460; Docket No. FAA-2020-0883; Project Identifier 2019-CE-034-AD. \n\n(a) Effective Date \n\n\n\tThis airworthiness directive (AD) is effective April 29, 2021. \n\n(b) Affected ADs \n\n\n\tThis AD replaces AD 2019-12-09, Amendment 39-19664 (84 FR 32260, July 8, 2019) (AD 2019-12-09). \n\n(c) Applicability \n\n\n\tThis AD applies to Rockwell Collins, Inc., (Rockwell Collins) Flight Display System Application FDSA-6500 part numbers (P/Ns) 810- 0234-1H0001, 810-0234-1H0002, 810-0234-1H0003, 810-0234-2H0001, 810- 0234-2C0001, 810-0234-2C0002, and 810-0234-4B0001. These applications are installed on, but not limited to, Bombardier Inc. Model CL-600-2B16 (604 variant) airplanes and Textron Aviation Inc. Models 525B, B200, B200C, B200CGT, B200GT, B300, B300C, and C90GTi airplanes, certificated in any category. \n\n(d) Subject \n\n\n\tJoint Aircraft System Component (JASC) Code 3400, NAVIGATION SYSTEM. \n\n(e) Unsafe Condition \n\n\n\tThis AD was prompted by a conflict between the traffic collision avoidance system (TCAS) primary display indications and aural alerts during a resolution advisory (RA) scenario. The FAA is issuing this AD to prevent conflicting TCAS information, which could result in the pilot under-correcting or over-correcting and may lead to inadequate aircraft separation and a mid-air collision. \n\n(f) Compliance \n\n\n\tComply with this AD within the compliance times specified, unless alreadydone. \n\n(g) Actions \n\n\n\t(1) Within 30 days after July 23, 2019 (the effective date of AD 2019-12-09), do the following: \n\t(i) Revise the airplane flight manual (AFM) or AFM supplement (AFMS) by adding the following text to the Limitations section: For TCAS II installations, during flight, do not operate TCAS in the ''TA/RA'' mode; TCAS may only be operated in ''TA Only'' mode. \n\t(ii) Fabricate a placard for each aircraft primary flight display, using at least \1/8\ inch letters, with the following text: TCAS Flight Ops--TA Only mode (TA/RA mode prohibited). \n\t(iii) Install the placard on the bottom of each aircraft primary flight display bezel in the area depicted in figure 1 to paragraph (g)(1)(iii) of this AD. \n\n\n\tNote 1 to paragraph (g)(1): In ''TA/RA'' mode, the TA stands for traffic advisory and RA stands for resolution advisory. \n\n((Page 15790)) \n\n(GRAPHIC) (TIFF OMITTED) TR25MR21.001 \n\n\n\t(2) In addition to the provisions of 14 CFR 43.3 and 43.7, the actions required by paragraphs (g)(1)(i) through (iii) of this AD may be performed by the owner/operator (pilot) holding at least a private pilot certificate and must be entered into the aircraft records showing compliance with this AD in accordance with 14 CFR 43.9(a)(1) through (4) and 14 CFR 91.417(a)(2)(v). The record must be maintained as required by 14 CFR 91.417. This authority is not applicable to aircraft being operated under 14 CFR part 119. \n\t(3) Within 12 months after the effective date of this AD, upgrade the FDSA-6500 field loadable software for your airplane as listed in the table in Section C and by following the instructions in Section F of Rockwell Collins Service Information Letter FDSA- 6500-19-1, Revision No. 2, dated June 12, 2019. \n\t(4) The airplane flight manual revision and placards required by paragraph (g)(1) of this AD may be removed after completing the software upgrade required by paragraph (g)(3) of this AD. \n\t(5) As of the effective date of this AD, do not install a Rockwell Collins Flight Display System Application FDSA-6500 P/N 810-0234-1H0001, 810-0234-1H0002, 810-0234-1H0003, 810-0234-2H0001, 810-0234-2C0001, 810-0234-2C0002, or 810-0234-4B0001 on any airplane. \n\n(h) Alternative Methods of Compliance (AMOCs) \n\n\n\t(1) The Manager, Wichita ACO Branch, 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 manager of the certification office, send it to the attention of the person identified in Related Information. \n\t(2) 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. \n\n(i) Related Information \n\n\n\tFor more information about this AD, contact Nhien Hoang, Aviation Safety Engineer, Wichita ACO Branch, FAA, 1801 Airport Road, Wichita, KS 67209; phone: (316) 946-4157; fax: (316) 946-4107; email: Nhien.Hoang@faa.gov or Wichita-COS@faa.gov. \n\n(j) Material Incorporated by Reference \n\n\n\t(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. \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) Rockwell Collins Service Information Letter FDSA-6500-19-1, Revision No. 2, dated June 12, 2019. \n\t(ii) (Reserved) \n\t(3) For Rockwell Collins service information identified in this AD, contact Rockwell Collins at Collins Aviation Services, 400 Collins Road NE, M/S 164-100, Cedar Rapids, IA 52498-0001; phone: (319) 295-9258; fax: (319) 295-4351; email: techmanuals@rockwellcollins.com; website: https://www.rockwellcollins.com/Services_and_Support/Publications.aspx. \n\t(4) You may view this service information at FAA, Airworthiness Products Section, Operational Safety Branch, 901 Locust, Kansas City, MO 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\n\n\tIssued on February 25, 2021. Gaetano A. Sciortino, Deputy Director for Strategic Initiatives, Compliance & Airworthiness Division, Aircraft Certification Service. (FR Doc. 2021-06156 Filed 3-24-21; 8:45 am) BILLING CODE 4910-13-P