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Adoption of 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 adding the following new airworthiness directive (AD): \n\n2020-07-02 Pratt & Whitney: Amendment 39-21106; Docket No. FAA-2020- 0299; Project Identifier AD-2020-00247-E. \n\n(a) Effective Date \n\n\n\tThis AD is effective April 15, 2020. \n\n(b) Affected ADs \n\n\n\tNone. \n\n(c) Applicability \n\n\n\tThis AD applies to all Pratt & Whitney PW1519G, PW1521G, PW1521G-3, PW1521GA, PW1524G, PW1524G-3, PW1525G, and PW1525G-3 model turbofan engines. \n\n(d) Subject \n\n\n\tJoint Aircraft System Component (JASC) Code 7230, Turbine Engine Compressor Section. \n\n(e) Unsafe Condition \n\n\n\tThis AD was prompted by reports of in-flight shutdowns due to failure of the low-pressure compressor (LPC) rotor 1 (R1) and by subsequent findings of cracked LPC R1s during inspections. The FAA is issuing this AD to prevent failure of the LPC R1. The unsafe condition, if not addressed, could result in uncontained release of the LPC R1, damage to the engine, damage to the airplane, and loss of control of the airplane. \n\n(f) Compliance \n\n\n\tComply with this AD within the compliance times specified, unless already done. \n\n(g) Required Actions \n\n\n\t(1) Remove the electronic engine control (EEC) software if the version is earlier than full authority digital electronic control (FADEC) software version V2.11.9.2 and install EEC FADEC software that is eligible for installation, as follows: \n\t(i) For engines that have accumulated less than 300 flight cycles (FCs) since new or since the last engine shop visit, within 15 FCs after the effective date of this AD. \n\t(ii) For all other engines, within 90 days after the effective date of this AD. \n\t(2) After the effective date of this AD, do not install an engine listed in paragraph (c) of this AD on any aircraft unless you have replaced the EEC software required by paragraph (g)(1) of this AD. \n\n\n\tNote to paragraph (g) of this AD: The engines identified in paragraphs (g)(1)(i) and (2) of this AD include engines originally delivered to operators as spare engines that have been subsequently installed on an airplane. \n\n(h) Definitions \n\n\n\t(1) For the purpose of this AD, an ''engine shop visit'' is the induction of an engine into the shop for maintenance involving the separation of pairs of major mating engine case flanges, except separation of engine flanges solely for the purposes of transportation of the engine without subsequent maintenance does not constitute an engine shop visit. \n\t(2) For the purpose of this AD, ''EEC FADEC software that is eligible for installation'' is EEC FADEC software version V2.11.9.2 or later. \n\n(i) Alternative Methods of Compliance (AMOCs) \n\n\n\t(1) The Manager, ECO 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 paragraph (j) of this AD. You may email your request to: ANE-AD-AMOC@faa.gov. \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(j) Related Information \n\n\n\tFor more information about this AD, contact Kevin M. Clark, Aerospace Engineer, ECO Branch, FAA, 1200 District Avenue, Burlington, MA 01803; phone: 781-238-7088; fax: 781-238-7199; email: kevin.m.clark@faa.gov. \n\n(k) Material Incorporated by Reference \n\n\n\tNone. \n\n\n\tIssued on March 25, 2020. Lance T. Gant, Director, Compliance & Airworthiness Division, Aircraft Certification Service. (FR Doc. 2020-06554 Filed 3-30-20; 8:45 am) \n\tBILLING CODE 4910-13-P
