17742 Federal Register / Vol. 85, No. 62 / Tuesday, March 31, 2020 / Rules and Regulations

(i) Rolls-Royce plc (RR) Alert Non- DATES: This AD is effective April 15, issued AD 2019–19–11 (84 FR 50719, Modification Service Bulletin RB.211–72– 2020. September 26, 2019), to perform AH465, Revision 6, dated November 29, The FAA must receive comments on inspections of the LPC R1 to prevent 2019. this AD by May 15, 2020. failures. The FAA subsequently (ii) [Reserved] (3) For RR service information identified in ADDRESSES: You may send comments, superseded AD 2019–19–11, issuing AD this AD, contact Rolls-Royce Deutschland Ltd using the procedures found in 14 CFR 2019–21–11 (84 FR 57813, October 29, & Co KG, Eschenweg 11, 15827 Blankenfelde- 11.43 and 11.45, by any of the following 2019) in response to another IFSD and Mahlow, Germany; phone: +49 (0) 33 708 6 methods: to expand the population of affected 0; email: https://www.rolls-royce.com/ • Federal eRulemaking Portal: Go to engines that needed inspection of the contact-us.aspx. https://www.regulations.gov. Follow the LPC R1. Since the effective date of AD (4) You may view this service information instructions for submitting comments. 2019–21–11, another IFSD occurred in at FAA, Engine and Propeller Standards • Fax: 202–493–2251. February 2020. Analysis by the Branch, 1200 District Avenue, Burlington, • manufacturer determined that the LPC MA, 01803. For information on the Mail: U.S. Department of availability of this material at the FAA, call Transportation, Docket Operations, M– vane schedules were putting the engine 781–238–7759. 30, West Building Ground Floor, Room in a condition to experience an acoustic (5) You may view this service information W12–140, 1200 New Jersey Avenue SE, resonance that damages the LPC R1, at the National Archives and Records Washington, DC 20590. which then leads to LPC R1 failure. In Administration (NARA). For information on • Hand Delivery: U.S. Department of response, the manufacturer updated the the availability of this material at NARA, Transportation, Docket Operations, M– EEC FADEC software to improve vane email: [email protected], or go to: 30, West Building Ground Floor, Room scheduling to avoid acoustic resonance. https://www.archives.gov/federal-register/cfr/ W12–140, 1200 New Jersey Avenue SE, This condition, if not addressed, ibr-locations.html. Washington, DC 20590, between 9 a.m. could result in uncontained release of Issued on March 26, 2020. and 5 p.m., Monday through Friday, the LPC R1, damage to the engine, and Gaetano A. Sciortino, except Federal holidays. damage to the airplane. The FAA is Deputy Director for Strategic Initiatives, For service information identified in issuing this AD to address the unsafe Compliance & Airworthiness Division, this final rule, contact Pratt & Whitney, condition on these products. Aircraft Certification Service. 400 Main Street, East Hartford, CT Related Service Information [FR Doc. 2020–06640 Filed 3–30–20; 8:45 am] 06118; phone: 800–565–0140; fax: 860– BILLING CODE 4910–13–P 565–5442; email: [email protected]; The FAA reviewed PW Service internet: https://fleetcare.pw.utc.com. Bulletin (SB) PW1000G–A–73–00– You may view this service information 0036–00A–930A–D, Issue No. 002, DEPARTMENT OF TRANSPORTATION at the FAA, Engine and Propeller dated March 4, 2020, and PW SB Standards Branch, 1200 District PW1000G–A–73–00–0041–00A–930A– Federal Aviation Administration Avenue, Burlington, MA 01803. For D, Issue No.001, dated March 4, 2020. information on the availability of this These SBs describe procedures for 14 CFR Part 39 material at the FAA, call 781–238–7759. replacing or modifying the EEC FADEC software. [Docket No. FAA–2020–0299; Project Examining the AD Docket Identifier AD–2020–00247–E; Amendment FAA’s Determination 39–21106; AD 2020–07–02] You may examine the AD docket on the internet at https:// The FAA is issuing this AD because RIN 2120–AA64 www.regulations.gov by searching for it evaluated all the relevant information and locating Docket No. FAA–2020– and determined the unsafe condition Airworthiness Directives; Pratt & 0299; or in person at Docket Operations described previously is likely to exist or Whitney Turbofan Engines between 9 a.m. and 5 p.m., Monday develop in other products of the same type design. AGENCY: Federal Aviation through Friday, except Federal holidays. Administration (FAA), DOT. The AD docket contains this final rule, AD Requirements any comments received, and other ACTION: Final rule; request for information. The street address for the This AD requires the removal from comments. Docket Operations is listed above. service of certain EEC FADEC software Comments will be available in the AD and the installation of a software SUMMARY: The FAA is adopting a new version eligible for installation. airworthiness directive (AD) for all Pratt docket shortly after receipt. & Whitney (PW) PW1519G, PW1521G, FOR FURTHER INFORMATION CONTACT: Interim Action PW1521G–3, PW1521GA, PW1524G, Kevin M. Clark, Aerospace Engineer, The FAA considers this AD interim PW1524G–3, PW1525G, and PW1525G– ECO Branch, FAA, 1200 District action. The root cause of the LPC R1 3 model turbofan engines. This AD Avenue, Burlington, MA, 01803; phone: failures is still being investigated and requires the removal from service of 781–238–7088; fax: 781–238–7199; the FAA will consider further certain electronic engine control (EEC) email: [email protected]. rulemaking depending on the results of full authority digital electronic control SUPPLEMENTARY INFORMATION: the investigation. (FADEC) software and the installation of a software version eligible for Discussion Justification for Immediate Adoption installation. This AD was prompted by The FAA has received reports of four and Determination of the Effective Date reports of four in-flight shutdowns instances of IFSDs occurring on the Section 553(b)(3)(B) of the (IFSDs) due to failure of the low- affected model turbofan engines since Administrative Procedure Act (APA) (5 pressure compressor (LPC) rotor 1 (R1) 2019. U.S.C.) authorizes agencies to dispense and by subsequent findings of cracked In response to the two IFSDs that with notice and comment procedures LPC R1s during inspections. The FAA is occurred in July and September 2019, for rules when the agency, for ‘‘good issuing this AD to address the unsafe and in response to on-going cause,’’ finds that those procedures are condition on these products. investigations of these IFSDs, the FAA ‘‘impracticable, unnecessary, or contrary

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to the public interest.’’ Under this LPC R1 failures and maintain an Confidential Business Information section, an agency, upon finding good acceptable level of safety. cause, may issue a final rule without The FAA considers these LPC R1 Confidential Business Information seeking comment prior to the failures to be an urgent safety issue, (CBI) is commercial or financial rulemaking. Similarly, Section 553(d) of requiring immediate action involving information that is both customarily and the APA authorizes agencies to make replacement of the EEC FADEC actually treated as private by its owner. rules effective in less than 30 days, software. Accordingly, notice and Under the Freedom of Information Act (FOIA) (5 U.S.C. 552), CBI is exempt upon a finding of good cause. opportunity for prior public comment are impracticable and contrary to public from public disclosure. If your An unsafe condition exists that interest pursuant to 5 U.S.C. comments responsive to this AD contain requires the immediate adoption of this 553(b)(3)(B). In addition, for the reasons commercial or financial information AD without providing an opportunity stated above, the FAA finds that good that is customarily treated as private, for public comments prior to adoption. cause exists pursuant to 5 U.S.C. 553(d) that you actually treat as private, and The FAA has found that the risk to the for making this amendment effective in that is relevant or responsive to this AD, flying public justifies waiving notice less than 30 days. it is important that you clearly designate and comment prior to adoption of this the submitted comments as CBI. Please rule. In addition to three failures of the Comments Invited mark each page of your submission LPC R1 installed on PW1500G model This AD is a final rule that involves containing CBI as ‘‘PROPIN.’’ The FAA turbofan engines occurring in 2019, an requirements affecting flight safety and will treat such marked submissions as additional failure of the LPC R1 was not preceded by notice and an confidential under the FOIA, and they occurred on February 12, 2020. LPC opportunity for public comment. will not be placed in the public docket rotor failures can release high-energy However, the FAA invites you to send of this AD. Submissions containing CBI debris from the engine and damage the any written data, views, or arguments should be sent to Kevin M. Clark, airplane (see AC 39–8, ‘‘Continued about this final rule. Send your Aerospace Engineer, ECO Branch, FAA, Airworthiness Assessments of comments to an address listed under the 1200 District Avenue, Burlington, MA Powerplant and Auxiliary Power Unit ADDRESSES section. Include the docket 01803. Any commentary that the FAA Installations of Transport Category number FAA–2020–0299 and Project receives which is not specifically Airplanes,’’ dated September 8, 2003). Identifier AD–2020–00247–E at the designated as CBI will be placed in the beginning of your comments. The FAA public docket for this rulemaking. The failures of the LPC R1 occurred specifically invites comments on the on engines that were shipped to overall regulatory, economic, Regulatory Flexibility Act operators as spare engines and were not environmental, and energy aspects of The requirements of the Regulatory delivered installed on aircraft. The this final rule. The FAA will consider failures occurred within 300 flight Flexibility Act (RFA) do not apply when all comments received by the closing an agency finds good cause pursuant to cycles (FCs) since installation of the date and may amend this final rule engine onto an aircraft. The 5 U.S.C. 553 to adopt a rule without because of those comments. prior notice and comment. Because FAA manufacturer has recommended that the Except for Confidential Business has determined that it has good cause to new engine software be loaded into the Information (CBI) as described in the adopt this rule without notice and engine as soon as the engines are following paragraph, and other installed on an aircraft or within 15 FCs information as described in 14 CFR comment, RFA analysis is not required. after installation if the engine was 11.35, the FAA will post all comments Costs of Compliance installed onto an aircraft recently. These received, without change, to https:// engines are the highest risk for LPC R1 www.regulations.gov, including any The FAA estimates that this AD failures. The remainder of the fleet is personal information you provide. The affects 58 engines installed on airplanes also at risk for LPC R1 failures and FAA will also post a report of U.S. registry. needs to have the software upgraded summarizing each substantive verbal The FAA estimates the following within 90 days to prevent additional contact received about this AD. costs to comply with this AD:

ESTIMATED COSTS

Cost per Cost on U.S. Action Labor cost Parts cost product operators

Replace EEC software ...... 2 work-hours × $85 per hour = $170 ...... $0 $170 $9,860

Authority for This Rulemaking that section, Congress charges the FAA Regulatory Findings with promoting safe flight of civil Title 49 of the United States Code This AD will not have federalism specifies the FAA’s authority to issue aircraft in air commerce by prescribing regulations for practices, methods, and implications under Executive Order rules on aviation safety. Subtitle I, 13132. This AD will not have a section 106, describes the authority of procedures the Administrator finds substantial direct effect on the States, on the FAA Administrator. ‘‘Subtitle VII: necessary for safety in air commerce. the relationship between the national Aviation Programs’’ describes in more This regulation is within the scope of government and the States, or on the detail the scope of the Agency’s that authority because it addresses an authority. unsafe condition that is likely to exist or distribution of power and The FAA is issuing this rulemaking develop on products identified in this responsibilities among the various under the authority described in rulemaking action. levels of government. Subtitle VII, Part A, Subpart III, Section For the reasons discussed above, I 44701: ‘‘General requirements.’’ Under certify that this AD:

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(1) Is not a ‘‘significant regulatory (i) For engines that have accumulated less DEPARTMENT OF TRANSPORTATION action’’ under Executive Order 12866, than 300 flight cycles (FCs) since new or and since the last engine shop visit, within 15 Federal Aviation Administration (2) Will not affect intrastate aviation FCs after the effective date of this AD. in Alaska. (ii) For all other engines, within 90 days 14 CFR Part 71 after the effective date of this AD. List of Subjects in 14 CFR Part 39 (2) After the effective date of this AD, do [Docket No. FAA–2019–0972; Airspace Docket No. 19–ANM–30] Air transportation, Aircraft, Aviation not install an engine listed in paragraph (c) safety, Incorporation by reference, of this AD on any aircraft unless you have RIN 2120–AA66 Safety. replaced the EEC software required by paragraph (g)(1) of this AD. Establishment of Class E Airspace; Adoption of the Amendment Note to paragraph (g) of this AD: The Mountain Home, ID Accordingly, under the authority engines identified in paragraphs (g)(1)(i) and AGENCY: Federal Aviation delegated to me by the Administrator, (2) of this AD include engines originally Administration (FAA), DOT. the FAA amends 14 CFR part 39 as delivered to operators as spare engines that follows: have been subsequently installed on an ACTION: Final rule. airplane. PART 39—AIRWORTHINESS SUMMARY: This action establishes Class DIRECTIVES (h) Definitions E airspace at Mountain Home Municipal Airport, Mountain Home, ID. Two areas (1) For the purpose of this AD, an ‘‘engine ■ 1. The authority citation for part 39 extending upward form 700 feet or more continues to read as follows: shop visit’’ is the induction of an engine into the shop for maintenance involving the above the surface are being established. Authority: 49 U.S.C. 106(g), 40113, 44701. separation of pairs of major mating engine The first area extends upward from 700 feet above the surface. The second area § 39.13 [Amended] case flanges, except separation of engine flanges solely for the purposes of extends upward from 1,200 feet above ■ 2. The FAA amends § 39.13 by adding transportation of the engine without the surface. These areas, to the extent the following new airworthiness subsequent maintenance does not constitute possible, contain arriving and departing directive (AD): an engine shop visit. IFR aircraft operating to/from the 2020–07–02 Pratt & Whitney: Amendment (2) For the purpose of this AD, ‘‘EEC airport. 39–21106; Docket No. FAA–2020–0299; FADEC software that is eligible for DATES: Effective 0901 UTC, July 16, Project Identifier AD–2020–00247–E. installation’’ is EEC FADEC software version 2020. The Director of the Federal (a) Effective Date V2.11.9.2 or later. Register approves this incorporation by This AD is effective April 15, 2020. (i) Alternative Methods of Compliance reference action under Title 1 Code of (AMOCs) Federal Regulations part 51, subject to (b) Affected ADs the annual revision of FAA Order (1) The Manager, ECO Branch, FAA, has None. 7400.11 and publication of conforming the authority to approve AMOCs for this AD, (c) Applicability if requested using the procedures found in 14 amendments. This AD applies to all Pratt & Whitney CFR 39.19. In accordance with 14 CFR 39.19, ADDRESSES: FAA Order 7400.11D, PW1519G, PW1521G, PW1521G–3, send your request to your principal inspector Airspace Designations and Reporting PW1521GA, PW1524G, PW1524G–3, or local Flight Standards District Office, as Points, and subsequent amendments can PW1525G, and PW1525G–3 model turbofan appropriate. If sending information directly be viewed online at https:// engines. to the manager of the certification office, www.faa.gov//air_traffic/publications/. (d) Subject send it to the attention of the person For further information, you can contact Joint Aircraft System Component (JASC) identified in paragraph (j) of this AD. You the Airspace Policy Group, Federal Code 7230, Turbine Engine Compressor may email your request to: ANE-AD-AMOC@ Aviation Administration, 800 Section. faa.gov. Independence Avenue SW, Washington, (2) Before using any approved AMOC, DC 20591; telephone: (202) 267–8783. (e) Unsafe Condition notify your appropriate principal inspector, The Order is also available for This AD was prompted by reports of in- or lacking a principal inspector, the manager inspection at the National Archives and flight shutdowns due to failure of the low- of the local flight standards district office/ Records Administration (NARA). For pressure compressor (LPC) rotor 1 (R1) and certificate holding district office. by subsequent findings of cracked LPC R1s information on the availability of FAA Order 7400.11D at NARA, email during inspections. The FAA is issuing this (j) Related Information AD to prevent failure of the LPC R1. The [email protected] or go to https:// unsafe condition, if not addressed, could For more information about this AD, www.archives.gov/federal-register/cfr/ result in uncontained release of the LPC R1, contact Kevin M. Clark, Aerospace Engineer, ibr-locations.html. ECO Branch, FAA, 1200 District Avenue, damage to the engine, damage to the airplane, FOR FURTHER INFORMATION CONTACT: and loss of control of the airplane. Burlington, MA 01803; phone: 781–238– 7088; fax: 781–238–7199; email: Matthew Van Der Wal, Federal Aviation (f) Compliance [email protected]. Administration, Western Service Center, Comply with this AD within the Operations Support Group, 2200 S. compliance times specified, unless already (k) Material Incorporated by Reference 216th Street, Des Moines, WA 98198; done. None. telephone (206) 231–3695. (g) Required Actions Issued on March 25, 2020. SUPPLEMENTARY INFORMATION: (1) Remove the electronic engine control Lance T. Gant, Authority for This Rulemaking (EEC) software if the version is earlier than Director, Compliance & Airworthiness full authority digital electronic control The FAA’s authority to issue rules Division, Aircraft Certification Service. (FADEC) software version V2.11.9.2 and regarding aviation safety is found in install EEC FADEC software that is eligible [FR Doc. 2020–06554 Filed 3–30–20; 8:45 am] Title 49 of the United States Code. for installation, as follows: BILLING CODE 4910–13–P Subtitle I, Section 106 describes the

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