Airworthiness Directives; Rolls-Royce Corporation (Type Certificate Previously Held by Allison Engine Company) Turbofan Engines, 45769-45773 [2020-16680]

Download as PDF Federal Register / Vol. 85, No. 147 / Thursday, July 30, 2020 / Rules and Regulations develop on products identified in this rulemaking action. Regulatory Findings This AD will not have federalism implications under Executive Order 13132. This AD will not have a substantial direct effect on the States, on the relationship between the national government and the States, or on the distribution of power and responsibilities among the various levels of government. For the reasons discussed above, I certify that this AD: (1) Is not a ‘‘significant regulatory action’’ under Executive Order 12866, (2) Will not affect intrastate aviation in Alaska, and (3) Will not have a significant economic impact, positive or negative, on a substantial number of small entities under the criteria of the Regulatory Flexibility Act. List of Subjects in 14 CFR Part 39 Air transportation, Aircraft, Aviation safety, Incorporation by reference, Safety. 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 1. The authority citation for part 39 continues to read as follows: ■ Authority: 49 U.S.C. 106(g), 40113, 44701. § 39.13 [Amended] 2. The FAA amends § 39.13 by adding the following new airworthiness directive (AD): ■ 2020–15–09 Airbus SAS: Amendment 39– 21172; Docket No. FAA–2020–0337; Product Identifier 2020–NM–044–AD. (a) Effective Date This AD is effective September 3, 2020. (b) Affected ADs None. khammond on DSKJM1Z7X2PROD with RULES (c) Applicability This AD applies to all Airbus SAS Model A330–941 airplanes, certificated in any category. (d) Subject Air Transport Association (ATA) of America Code 27, Flight controls. (e) Reason This AD was prompted by a report that seven spoiler servo-controls (SSCs) lost hydraulic locking function due to a sheared seal on the blocking valve. The FAA is issuing this AD to address loss of hydraulic VerDate Sep<11>2014 16:01 Jul 29, 2020 Jkt 250001 45769 locking function on the SSCs, which in combination with one engine inoperative at takeoff, could result in reduced controllability of the airplane. International Validation Branch, FAA, 2200 South 216th St., Des Moines, WA 98198; telephone and fax: 206–231–3229; email vladimir.ulyanov@faa.gov. (f) Compliance Comply with this AD within the compliance times specified, unless already done. (k) 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 this AD specifies otherwise. (i) European Union Aviation Safety Agency (EASA) AD 2020–0054, dated March 11, 2020. (ii) [Reserved] (3) For information about EASA AD 2020– 0054, contact the EASA, Konrad-AdenauerUfer 3, 50668 Cologne, Germany; telephone +49 221 89990 6017; email ADs@ easa.europa.eu; internet www.easa.europa.eu. You may find this EASA AD on the EASA website at https:// ad.easa.europa.eu. (4) You may view this material at the FAA, Airworthiness Products Section, Operational Safety Branch, 2200 South 216th St., Des Moines, WA. For information on the availability of this material at the FAA, call 206–231–3195. This material may be found in the AD docket on the internet at https:// www.regulations.gov by searching for and locating Docket No. FAA–2020–0337. (5) You may view this material 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. (g) Requirements Except as specified in paragraph (h) of this AD: Comply with all required actions and compliance times specified in, and in accordance with, European Union Aviation Safety Agency (EASA) AD 2020–0054, dated March 11, 2020 (‘‘EASA AD 2020–0054’’). (h) Exception to EASA AD 2020–0054 The ‘‘Remarks’’ section of EASA AD 2020– 0054 does not apply to this AD. (i) Other FAA AD Provisions The following provisions also apply to this AD: (1) Alternative Methods of Compliance (AMOCs): The Manager, Large Aircraft Section, International Validation 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 International Section, send it to the attention of the person identified in paragraph (j) of this AD. Information may be emailed to: 9-AVS-AIR730-AMOC@faa.gov. 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. (2) Contacting the Manufacturer: For any requirement in this AD to obtain instructions from a manufacturer, the instructions must be accomplished using a method approved by the Manager, Large Aircraft Section, International Validation Branch, FAA; or EASA; or Airbus SAS’s EASA Design Organization Approval (DOA). If approved by the DOA, the approval must include the DOA-authorized signature. (3) Required for Compliance (RC): For any service information referenced in EASA AD 2020–0054 that contains RC procedures and tests: Except as required by paragraph (i)(2) of this AD, RC procedures and tests must be done to comply with this AD; any procedures or tests that are not identified as RC are recommended. Those procedures and tests that are not identified as RC may be deviated from using accepted methods in accordance with the operator’s maintenance or inspection program without obtaining approval of an AMOC, provided the procedures and tests identified as RC can be done and the airplane can be put back in an airworthy condition. Any substitutions or changes to procedures or tests identified as RC require approval of an AMOC. (j) Related Information For more information about this AD, contact Vladimir Ulyanov, Aerospace Engineer, Large Aircraft Section, PO 00000 Frm 00009 Fmt 4700 Sfmt 4700 Issued on July 13, 2020. Lance T. Gant, Director, Compliance & Airworthiness Division, Aircraft Certification Service. [FR Doc. 2020–16484 Filed 7–29–20; 8:45 am] BILLING CODE 4910–13–P DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA–2020–0679; Project Identifier AD–2020–01060–E; Amendment 39–21197; AD 2020–16–13] RIN 2120–AA64 Airworthiness Directives; Rolls-Royce Corporation (Type Certificate Previously Held by Allison Engine Company) Turbofan Engines Federal Aviation Administration (FAA), DOT. ACTION: Final rule; request for comments. AGENCY: The FAA is adopting a new airworthiness directive (AD) for certain SUMMARY: E:\FR\FM\30JYR1.SGM 30JYR1 45770 Federal Register / Vol. 85, No. 147 / Thursday, July 30, 2020 / Rules and Regulations Rolls-Royce Corporation (RRC) AE 3007A, AE 3007A1, AE 3007A1/1, AE 3007A1/2, AE 3007A1/3, AE 3007A1E, AE 3007A1P, and AE 3007A3 model turbofan engines. This AD was prompted by an in-flight shutdown (IFSD) of an engine and subsequent investigation by the manufacturer that revealed a crack in the 3rd-stage compressor wheel. This AD requires replacement of affected 3rd-stage compressor wheels. The FAA is issuing this AD to address the unsafe condition on these products. DATES: This AD is effective August 14, 2020. The FAA must receive comments on this AD by September 14, 2020. ADDRESSES: You may send comments, using the procedures found in 14 CFR 11.43 and 11.45, by any of the following methods: • Federal eRulemaking Portal: Go to https://www.regulations.gov. Follow the instructions for submitting comments. • Fax: 202–493–2251. • Mail: U.S. Department of Transportation, Docket Operations, M– 30, West Building Ground Floor, Room W12–140, 1200 New Jersey Avenue SE, Washington, DC 20590. • Hand Delivery: U.S. Department of Transportation, Docket Operations, M– 30, West Building Ground Floor, Room W12–140, 1200 New Jersey Avenue SE, Washington, DC 20590, between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. For service information identified in this final rule, contact Rolls-Royce Corporation, 450 South Meridian Street, Mail Code NB–01–06, Indianapolis, IN 46225; phone: (317) 230–1667; email: CMSEindyOSD@rolls-royce.com; internet: www.rolls-royce.com. You may view this service information at the FAA, Airworthiness Products Section, Operational Safety Branch, 1200 District Avenue, Burlington, MA 01803. For information on the availability of this material at the FAA, call 781–238–7759. khammond on DSKJM1Z7X2PROD with RULES Examining the AD Docket You may examine the AD docket on the internet at https:// www.regulations.gov by searching for and locating Docket No. FAA–2020– 0679; or in person at Docket Operations between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. The AD docket contains this final rule, any comments received, and other information. The street address for the Docket Operations is listed above. FOR FURTHER INFORMATION CONTACT: Kyri Zaroyiannis, Aerospace Engineer, VerDate Sep<11>2014 16:01 Jul 29, 2020 Jkt 250001 Chicago ACO, FAA, 2300 E Devon Ave., Des Plaines, IL 60018; phone: (847) 294– 7836; fax: (847) 294–7834; email: kyri.zaroyiannis@faa.gov. SUPPLEMENTARY INFORMATION: Background The FAA learned of an uncommanded IFSD of a RRC AE 3007A1 model turbofan engine installed on an Embraer S.A. ERJ–145 airplane conducting a revenue flight. The manufacturer’s investigation of this incident revealed that the IFSD resulted from a low-cycle fatigue crack in the dovetail slot for the blade attachment in the 3rd-stage compressor wheel, causing one 3rdstage compressor blade to release. The crack initiated in the dovetail slot due to a sharp corner in the wheel slot geometry. The broaching process was identified as the cause and parts from this manufacturing lot require removal from service. This condition, if not addressed, could result in uncontained release of the 3rd-stage compressor wheel, damage to the engine, and damage to the airplane. The FAA is issuing this AD to address the unsafe condition on these products. FAA’s Determination The FAA is issuing this AD because the agency evaluated all the relevant information and determined the unsafe condition described previously is likely to exist or develop in other products of the same type design. Related Service Information The FAA reviewed Rolls-Royce Alert Service Bulletin (ASB) AE 3007A–A– 72–446, Revision 2, dated July 28, 2020. The ASB describes procedures for replacing certain 3rd-stage compressor wheels. AD Requirements This AD requires replacement of certain 3rd-stage compressor wheels before they accumulate a specified number of cycles. FAA’s Justification for Immediate Adoption and Determination of the Effective Date Section 553(b)(3)(B) of the Administrative Procedure Act (APA) (5 U.S.C.) authorizes agencies to dispense with notice and comment procedures for rules when the agency, for ‘‘good cause,’’ finds that those procedures are ‘‘impracticable, unnecessary, or contrary to the public interest.’’ Under this section, an agency, upon finding good cause, may issue a final rule without providing notice and seeking comment PO 00000 Frm 00010 Fmt 4700 Sfmt 4700 prior to issuance. Further, section 553(d) of the APA authorizes agencies to make rules effective in less than 30 days, upon a finding of good cause. An unsafe condition exists that requires the immediate adoption of this AD without providing an opportunity for public comments prior to adoption. The FAA has found that the risk to the flying public justifies waiving notice and comment prior to adoption of this rule. RRC inspected a RRC AE3007A1 model turbofan engine after it experiences an uncommanded IFSD during a revenue flight on an Embraer ERJ–145 airplane. The manufacturer’s inspection discovered a low-cycle fatigue crack in a 3rd-stage compressor wheel that allowed a 3rd-stage compressor blade to release during the flight. The manufacturer traced the cause of the cracked 3rd-stage compressor wheel to a specific machining process that occurred during manufacture of the 3rdstage compressor wheels. The manufacturer’s subsequent investigation discovered multiple 3rd-stage compressor wheels in the affected serial numbered population with similar lowcycle fatigue cracks. The 3rd-stage compressor wheels identified in this AD are unable to remain in service beyond the cycles since new limits listed in paragragh (g) of this AD. As a result of the shortened compliance times established based on the FAA’s risk assessment, the FAA has determined that there is insufficient time available to allow for notice and opportunity for prior public comment. The FAA considers the removal of these 3rd-stage compressor wheels from service to be an urgent safety issue. Exceeding the reduced cycle limits on the 3rd-stage compressor wheels required by this AD could lead to failure of the 3rd-stage compressor wheel and high-energy release of the 3rd-stage compressor wheel, resulting in damage to the engine and damage to the airplane. Accordingly, notice and opportunity for prior public comment are impracticable and contrary to public interest pursuant to 5 U.S.C. 553(b)(3)(B). In addition, the FAA finds that good cause exists pursuant to 5 U.S.C. 553(d) for making this amendment effective in less than 30 days, for the same reasons the FAA found good cause to forgo notice and comment. E:\FR\FM\30JYR1.SGM 30JYR1 Federal Register / Vol. 85, No. 147 / Thursday, July 30, 2020 / Rules and Regulations Comments Invited The FAA invites you to send any written data, views, or arguments about this final rule. Send your comments to an address listed under the ADDRESSES section. Include the docket number FAA–2020–0679 and Project Identifier AD–2020–01060–E at the beginning of your comments. The most helpful comments reference a specific portion of the final rule, explain the reason for any recommended change, and include supporting data. The FAA will consider all comments received by the closing date and may amend this final rule because of those comments. Except for Confidential Business Information (CBI) as described in the following paragraph, and other information as described in 14 CFR 11.35, the FAA will post all comments received, without change, to https:// www.regulations.gov, including any personal information you provide. The FAA will also post a report summarizing each substantive verbal contact received about this final rule. Confidential Business Information Confidential Business Information (CBI) is commercial or financial information that is both customarily and actually treated as private by its owner. Under the Freedom of Information Act (FOIA) (5 U.S.C. 552), CBI is exempt from public disclosure. If your comments responsive to this final rule contain commercial or financial information that is customarily treated as private, that you actually treat as private, and that is relevant or responsive to this final rule, it is important that you clearly designate the submitted comments as CBI. Please mark each page of your submission containing CBI as ‘‘PROPIN.’’ The FAA will treat such marked submissions as confidential under the FOIA, and they will not be placed in the public docket of this final rule. Submissions containing CBI should be sent to Kyri 45771 Zaroyiannis, Aerospace Engineer, Chicago ACO, FAA, 2300 E. Devon Ave., Des Plaines, IL 60018. Any commentary that the FAA receives which is not specifically designated as CBI will be placed in the public docket for this rulemaking. Regulatory Flexibility Act The requirements of the Regulatory Flexibility Act (RFA) do not apply when an agency finds good cause pursuant to 5 U.S.C. 553 to adopt a rule without prior notice and comment. Because the FAA has determined that it has good cause to adopt this rule without notice and comment, RFA analysis is not required. Costs of Compliance The FAA estimate that this AD affects 4 engines installed on airplanes of U.S. registry. The FAA estimates the following costs to comply with this AD: ESTIMATED COSTS Action Labor cost Remove 3rd-stage compressor wheel ............ Replace 3rd-stage compressor wheel ............ 40 work-hours × $85 per hour = $3,400 ........ 85 work-hours × $85 per hour = $7,225 ........ khammond on DSKJM1Z7X2PROD with RULES Authority for This Rulemaking Title 49 of the United States Code specifies the FAA’s authority to issue rules on aviation safety. Subtitle I, section 106, describes the authority of the FAA Administrator. ‘‘Subtitle VII: Aviation Programs’’ describes in more detail the scope of the Agency’s authority. The FAA is issuing this rulemaking under the authority described in Subtitle VII, Part A, Subpart III, Section 44701: ‘‘General requirements.’’ Under that section, Congress charges the FAA with promoting safe flight of civil aircraft in air commerce by prescribing regulations for practices, methods, and procedures the Administrator finds necessary for safety in air commerce. This regulation is within the scope of that authority because it addresses an unsafe condition that is likely to exist or develop on products identified in this rulemaking action. Regulatory Findings This AD will not have federalism implications under Executive Order 13132. This AD will not have a VerDate Sep<11>2014 16:01 Jul 29, 2020 Jkt 250001 Parts cost substantial direct effect on the States, on the relationship between the national government and the States, or on the distribution of power and responsibilities among the various levels of government. For the reasons discussed above, I certify that this AD: (1) Is not a ‘‘significant regulatory action’’ under Executive Order 12866, (2) Will not affect intrastate aviation in Alaska, and List of Subjects in 14 CFR Part 39 Cost per product $0 32,844 $3,400 40,069 Cost on U.S. operators $13,600 160,276 Authority: 49 U.S.C. 106(g), 40113, 44701. § 39.13 [Amended] 2. The FAA amends § 39.13 by adding the following new airworthiness directive (AD): ■ 2020–16–13 Rolls-Royce Corporation (Type Certificate previously held by Allison Engine Company): Amendment 39– 21197; Docket No. FAA–2020–0679; Project Identifier AD–2020–01060–E. (a) Effective Date This AD is effective August 14, 2020. Air transportation, Aircraft, Aviation safety, Incorporation by reference, Safety. (b) Affected ADs The Amendment (c) Applicability Accordingly, under the authority delegated to me by the Administrator, the FAA amends 14 CFR part 39 as follows: This AD applies to Rolls-Royce Corporation (RRC) AE 3007A, AE 3007A1, AE 3007A1/1, AE 3007A1/2, AE 3007A1/3, AE 3007A1E, AE 3007A1P, and AE 3007A3 model turbofan engines with a 3rd-stage compressor wheel, part number (P/N) 23084158, and with a serial number listed in Figure 1 to paragraph (c) of this AD. PART 39—AIRWORTHINESS DIRECTIVES 1. The authority citation for part 39 continues to read as follows: ■ PO 00000 Frm 00011 Fmt 4700 Sfmt 4700 None. BILLING CODE 4910–13–P E:\FR\FM\30JYR1.SGM 30JYR1 45772 Federal Register / Vol. 85, No. 147 / Thursday, July 30, 2020 / Rules and Regulations (d) Subject Joint Aircraft System Component (JASC) Code 7230, Turbine Engine Compressor Section. (e) Unsafe Condition Comply with this AD within the compliance times specified, unless already done. 2 to paragraph (g)(2) of this AD or before further flight, whichever occurs later after the effective date of this AD, remove the affected (1) For AE 3007A, AE 3007A1, AE 3007A1/ 1, AE 3007A1/2, AE 3007A1/3, AE 3007A1P, and AE 3007A3 model turbofan engines, prior to the 3rd-stage compressor wheel accumulating the cycles listed in Table 1 to paragraph (g)(1) of this AD or before further flight, whichever occurs later after the effective date of this AD, remove the affected 3rd-stage compressor wheel and replace with a part eligible for installation. 3rd-stage compressor wheel and replace with a part eligible for installation. ER30JY20.024</GPH> (2) For AE 3007A1E model turbofan engines, prior to the 3rd-stage compressor wheel accumulating the cycles listed in Table (f) Compliance (g) Required Actions VerDate Sep<11>2014 16:01 Jul 29, 2020 Jkt 250001 PO 00000 Frm 00012 Fmt 4700 Sfmt 4700 E:\FR\FM\30JYR1.SGM 30JYR1 ER30JY20.023</GPH> khammond on DSKJM1Z7X2PROD with RULES This AD was prompted by an in-flight shutdown of an engine during a revenue flight and subsequent investigation by the manufacturer that revealed a crack in the 3rdstage compressor wheel. The FAA is issuing this AD to prevent failure of the 3rd-stage compressor wheel. The unsafe condition, if not addressed, could result in an uncontained release of the 3rd-stage compressor wheel, damage to the engine, and damage to the airplane. Federal Register / Vol. 85, No. 147 / Thursday, July 30, 2020 / Rules and Regulations (1) For the purpose of this AD, a part eligible for installation is a 3rd-stage compressor wheel that does not have a P/N and a serial number listed in the Applicability, paragraph (c) of this AD. (2) 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 flanges, except that the separation of engine flanges solely for the purposes of transportation of the engine without subsequent engine maintenance does not constitute an engine shop visit. (i) Special Flight Permit khammond on DSKJM1Z7X2PROD with RULES (1) Special flight permits, as described in Section 21.197 and Section 21.199 of the Federal Aviation Regulations (14 CFR 21.197 and 21.199), are subject to the requirements of paragraph (i)(1)(i) of this AD. (i) Operators may perform a one-time nonrevenue ferry flight to a location where the engine can be removed from service. This ferry flight must be performed with only essential flight crew. (ii) [Reserved] (2) [Reserved] Issued on July 28, 2020. Gaetano A. Sciortino, Deputy Director for Strategic Initiatives, Compliance & Airworthiness Division, Aircraft Certification Service. [FR Doc. 2020–16680 Filed 7–28–20; 4:15 pm] BILLING CODE 4910–13–P DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA–2020–0215; Product Identifier 2018–SW–088–AD; Amendment 39–21181; AD 2020–15–18] RIN 2120–AA64 Airworthiness Directives; Leonardo S.p.A. Helicopters Federal Aviation Administration (FAA), Department of Transportation (DOT). ACTION: Final rule. AGENCY: The FAA is adopting a new airworthiness directive (AD) for certain Leonardo S.p.A. (Leonardo) Model AB139, AW139, AW169, and AW189 helicopters. This AD was prompted by reports of uncommanded deployment of the emergency flotation system (EFS) due to improper accomplishment of the reset procedure of the shape memory alloy (SMA) inflation system actuation device. This AD requires removal of affected SMA inflation systems and installation of serviceable SMA inflation systems. The FAA is issuing this AD to address the unsafe condition on these products. (j) Alternative Methods of Compliance (AMOCs) (1) The Manager, Chicago ACO, 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 (k) of this AD. (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. SUMMARY: (k) Related Information For more information about this AD, contact Kyri Zaroyiannis, Aerospace Engineer, Chicago ACO, FAA, 2300 E Devon Ave., Des Plaines, IL 60018; phone: (847) 294–7836; fax: (847) 294–7834; email: kyri.zaroyiannis@faa.gov. DATES: (l) Material Incorporated by Reference None. VerDate Sep<11>2014 16:01 Jul 29, 2020 Jkt 250001 This AD is effective September 3, 2020. The Director of the Federal Register approved the incorporation by reference of a certain publication listed in this AD as of September 3, 2020. ADDRESSES: For service information identified in this final rule, contact Leonardo S.p.A. Helicopters, Emanuele PO 00000 Frm 00013 Fmt 4700 Sfmt 4700 Bufano, Head of Airworthiness, Viale G.Agusta 520, 21017 C.Costa di Samarate (Va) Italy; telephone +39– 0331–225074; fax +39–0331–229046; or at https://www.leonardocompany.com/ en/home. You may view this service information at the FAA, Office of the Regional Counsel, Southwest Region, 10101 Hillwood Pkwy., Room 6N–321, Fort Worth, TX 76177. For information on the availability of this material at the FAA, call 817–222–5110. It is also available on the internet at https:// www.regulations.gov by searching for and locating Docket No. FAA–2020– 0215. Examining the AD Docket You may examine the AD docket on the internet at https:// www.regulations.gov by searching for and locating Docket No. FAA–2020– 0215; or in person at Docket Operations between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. The AD docket contains this final rule, any comments received, and other information. The address for Docket Operations is U.S. Department of Transportation, Docket Operations, M– 30, West Building Ground Floor, Room W12–140, 1200 New Jersey Avenue SE, Washington, DC 20590. FOR FURTHER INFORMATION CONTACT: Kristi Bradley, Aviation Safety Engineer, Safety Management Section, Rotorcraft Standards Branch, FAA, 10101 Hillwood Pkwy., Fort Worth, TX 76177; telephone 817–222–5485; email Kristin.Bradley@faa.gov. SUPPLEMENTARY INFORMATION: Discussion The FAA issued a notice of proposed rulemaking (NPRM) to amend 14 CFR part 39 by adding an AD that would apply to certain Leonardo Model AB139, AW139, AW169, and AW189 helicopters. The NPRM published in the Federal Register on April 14, 2020 (85 FR 20618). The NPRM was prompted by reports of uncommanded deployment of E:\FR\FM\30JYR1.SGM 30JYR1 ER30JY20.025</GPH> (h) Definitions 45773

Agencies

[Federal Register Volume 85, Number 147 (Thursday, July 30, 2020)]
[Rules and Regulations]
[Pages 45769-45773]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2020-16680]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2020-0679; Project Identifier AD-2020-01060-E; 
Amendment 39-21197; AD 2020-16-13]
RIN 2120-AA64


Airworthiness Directives; Rolls-Royce Corporation (Type 
Certificate Previously Held by Allison Engine Company) Turbofan Engines

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Final rule; request for comments.

-----------------------------------------------------------------------

SUMMARY: The FAA is adopting a new airworthiness directive (AD) for 
certain

[[Page 45770]]

Rolls-Royce Corporation (RRC) AE 3007A, AE 3007A1, AE 3007A1/1, AE 
3007A1/2, AE 3007A1/3, AE 3007A1E, AE 3007A1P, and AE 3007A3 model 
turbofan engines. This AD was prompted by an in-flight shutdown (IFSD) 
of an engine and subsequent investigation by the manufacturer that 
revealed a crack in the 3rd-stage compressor wheel. This AD requires 
replacement of affected 3rd-stage compressor wheels. The FAA is issuing 
this AD to address the unsafe condition on these products.

DATES: This AD is effective August 14, 2020.
    The FAA must receive comments on this AD by September 14, 2020.

ADDRESSES: You may send comments, using the procedures found in 14 CFR 
11.43 and 11.45, by any of the following methods:
     Federal eRulemaking Portal: Go to https://www.regulations.gov. Follow the instructions for submitting comments.
     Fax: 202-493-2251.
     Mail: U.S. Department of Transportation, Docket 
Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New 
Jersey Avenue SE, Washington, DC 20590.
     Hand Delivery: U.S. Department of Transportation, Docket 
Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New 
Jersey Avenue SE, Washington, DC 20590, between 9 a.m. and 5 p.m., 
Monday through Friday, except Federal holidays.
    For service information identified in this final rule, contact 
Rolls-Royce Corporation, 450 South Meridian Street, Mail Code NB-01-06, 
Indianapolis, IN 46225; phone: (317) 230-1667; email: 
royce.com">[email protected]royce.com; internet: www.rolls-royce.com. You may 
view this service information at the FAA, Airworthiness Products 
Section, Operational Safety Branch, 1200 District Avenue, Burlington, 
MA 01803. For information on the availability of this material at the 
FAA, call 781-238-7759.

Examining the AD Docket

    You may examine the AD docket on the internet at https://www.regulations.gov by searching for and locating Docket No. FAA-2020-
0679; or in person at Docket Operations between 9 a.m. and 5 p.m., 
Monday through Friday, except Federal holidays. The AD docket contains 
this final rule, any comments received, and other information. The 
street address for the Docket Operations is listed above.

FOR FURTHER INFORMATION CONTACT: Kyri Zaroyiannis, Aerospace Engineer, 
Chicago ACO, FAA, 2300 E Devon Ave., Des Plaines, IL 60018; phone: 
(847) 294-7836; fax: (847) 294-7834; email: [email protected].

SUPPLEMENTARY INFORMATION:

Background

    The FAA learned of an uncommanded IFSD of a RRC AE 3007A1 model 
turbofan engine installed on an Embraer S.A. ERJ-145 airplane 
conducting a revenue flight. The manufacturer's investigation of this 
incident revealed that the IFSD resulted from a low-cycle fatigue crack 
in the dovetail slot for the blade attachment in the 3rd-stage 
compressor wheel, causing one 3rd-stage compressor blade to release. 
The crack initiated in the dovetail slot due to a sharp corner in the 
wheel slot geometry. The broaching process was identified as the cause 
and parts from this manufacturing lot require removal from service. 
This condition, if not addressed, could result in uncontained release 
of the 3rd-stage compressor wheel, damage to the engine, and damage to 
the airplane. The FAA is issuing this AD to address the unsafe 
condition on these products.

FAA's Determination

    The FAA is issuing this AD because the agency evaluated all the 
relevant information and determined the unsafe condition described 
previously is likely to exist or develop in other products of the same 
type design.

Related Service Information

    The FAA reviewed Rolls-Royce Alert Service Bulletin (ASB) AE 3007A-
A-72-446, Revision 2, dated July 28, 2020. The ASB describes procedures 
for replacing certain 3rd-stage compressor wheels.

AD Requirements

    This AD requires replacement of certain 3rd-stage compressor wheels 
before they accumulate a specified number of cycles.

FAA's Justification for Immediate Adoption and Determination of the 
Effective Date

    Section 553(b)(3)(B) of the Administrative Procedure Act (APA) (5 
U.S.C.) authorizes agencies to dispense with notice and comment 
procedures for rules when the agency, for ``good cause,'' finds that 
those procedures are ``impracticable, unnecessary, or contrary to the 
public interest.'' Under this section, an agency, upon finding good 
cause, may issue a final rule without providing notice and seeking 
comment prior to issuance. Further, section 553(d) of the APA 
authorizes agencies to make rules effective in less than 30 days, upon 
a finding of good cause.
    An unsafe condition exists that requires the immediate adoption of 
this AD without providing an opportunity for public comments prior to 
adoption. The FAA has found that the risk to the flying public 
justifies waiving notice and comment prior to adoption of this rule. 
RRC inspected a RRC AE3007A1 model turbofan engine after it experiences 
an uncommanded IFSD during a revenue flight on an Embraer ERJ-145 
airplane.
    The manufacturer's inspection discovered a low-cycle fatigue crack 
in a 3rd-stage compressor wheel that allowed a 3rd-stage compressor 
blade to release during the flight. The manufacturer traced the cause 
of the cracked 3rd-stage compressor wheel to a specific machining 
process that occurred during manufacture of the 3rd-stage compressor 
wheels. The manufacturer's subsequent investigation discovered multiple 
3rd-stage compressor wheels in the affected serial numbered population 
with similar low-cycle fatigue cracks. The 3rd-stage compressor wheels 
identified in this AD are unable to remain in service beyond the cycles 
since new limits listed in paragragh (g) of this AD. As a result of the 
shortened compliance times established based on the FAA's risk 
assessment, the FAA has determined that there is insufficient time 
available to allow for notice and opportunity for prior public comment.
    The FAA considers the removal of these 3rd-stage compressor wheels 
from service to be an urgent safety issue. Exceeding the reduced cycle 
limits on the 3rd-stage compressor wheels required by this AD could 
lead to failure of the 3rd-stage compressor wheel and high-energy 
release of the 3rd-stage compressor wheel, resulting in damage to the 
engine and damage to the airplane. Accordingly, notice and opportunity 
for prior public comment are impracticable and contrary to public 
interest pursuant to 5 U.S.C. 553(b)(3)(B).
    In addition, the FAA finds that good cause exists pursuant to 5 
U.S.C. 553(d) for making this amendment effective in less than 30 days, 
for the same reasons the FAA found good cause to forgo notice and 
comment.

[[Page 45771]]

Comments Invited

    The FAA invites you to send any written data, views, or arguments 
about this final rule. Send your comments to an address listed under 
the ADDRESSES section. Include the docket number FAA-2020-0679 and 
Project Identifier AD-2020-01060-E at the beginning of your comments. 
The most helpful comments reference a specific portion of the final 
rule, explain the reason for any recommended change, and include 
supporting data. The FAA will consider all comments received by the 
closing date and may amend this final rule because of those comments.
    Except for Confidential Business Information (CBI) as described in 
the following paragraph, and other information as described in 14 CFR 
11.35, the FAA will post all comments received, without change, to 
https://www.regulations.gov, including any personal information you 
provide. The FAA will also post a report summarizing each substantive 
verbal contact received about this final rule.

Confidential Business Information

    Confidential Business Information (CBI) is commercial or financial 
information that is both customarily and actually treated as private by 
its owner. Under the Freedom of Information Act (FOIA) (5 U.S.C. 552), 
CBI is exempt from public disclosure. If your comments responsive to 
this final rule contain commercial or financial information that is 
customarily treated as private, that you actually treat as private, and 
that is relevant or responsive to this final rule, it is important that 
you clearly designate the submitted comments as CBI. Please mark each 
page of your submission containing CBI as ``PROPIN.'' The FAA will 
treat such marked submissions as confidential under the FOIA, and they 
will not be placed in the public docket of this final rule. Submissions 
containing CBI should be sent to Kyri Zaroyiannis, Aerospace Engineer, 
Chicago ACO, FAA, 2300 E. Devon Ave., Des Plaines, IL 60018. Any 
commentary that the FAA receives which is not specifically designated 
as CBI will be placed in the public docket for this rulemaking.

Regulatory Flexibility Act

    The requirements of the Regulatory Flexibility Act (RFA) do not 
apply when an agency finds good cause pursuant to 5 U.S.C. 553 to adopt 
a rule without prior notice and comment. Because the FAA has determined 
that it has good cause to adopt this rule without notice and comment, 
RFA analysis is not required.

Costs of Compliance

    The FAA estimate that this AD affects 4 engines installed on 
airplanes of U.S. registry.
    The FAA estimates the following costs to comply with this AD:

                                                 Estimated Costs
----------------------------------------------------------------------------------------------------------------
                                                                                     Cost per      Cost on U.S.
                Action                         Labor cost           Parts cost        product        operators
----------------------------------------------------------------------------------------------------------------
Remove 3rd-stage compressor wheel.....  40 work-hours x $85 per               $0          $3,400         $13,600
                                         hour = $3,400.
Replace 3rd-stage compressor wheel....  85 work-hours x $85 per           32,844          40,069         160,276
                                         hour = $7,225.
----------------------------------------------------------------------------------------------------------------

Authority for This Rulemaking

    Title 49 of the United States Code specifies the FAA's authority to 
issue rules on aviation safety. Subtitle I, section 106, describes the 
authority of the FAA Administrator. ``Subtitle VII: Aviation Programs'' 
describes in more detail the scope of the Agency's authority.
    The FAA is issuing this rulemaking under the authority described in 
Subtitle VII, Part A, Subpart III, Section 44701: ``General 
requirements.'' Under that section, Congress charges the FAA with 
promoting safe flight of civil aircraft in air commerce by prescribing 
regulations for practices, methods, and procedures the Administrator 
finds necessary for safety in air commerce. This regulation is within 
the scope of that authority because it addresses an unsafe condition 
that is likely to exist or develop on products identified in this 
rulemaking action.

Regulatory Findings

    This AD will not have federalism implications under Executive Order 
13132. This AD will not have a substantial direct effect on the States, 
on the relationship between the national government and the States, or 
on the distribution of power and responsibilities among the various 
levels of government.
    For the reasons discussed above, I certify that this AD:
    (1) Is not a ``significant regulatory action'' under Executive 
Order 12866,
    (2) Will not affect intrastate aviation in Alaska, and

List of Subjects in 14 CFR Part 39

    Air transportation, Aircraft, Aviation safety, Incorporation by 
reference, Safety.

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 airworthiness 
directive (AD):

2020-16-13 Rolls-Royce Corporation (Type Certificate previously held 
by Allison Engine Company): Amendment 39-21197; Docket No. FAA-2020-
0679; Project Identifier AD-2020-01060-E.

(a) Effective Date

    This AD is effective August 14, 2020.

(b) Affected ADs

    None.

(c) Applicability

    This AD applies to Rolls-Royce Corporation (RRC) AE 3007A, AE 
3007A1, AE 3007A1/1, AE 3007A1/2, AE 3007A1/3, AE 3007A1E, AE 
3007A1P, and AE 3007A3 model turbofan engines with a 3rd-stage 
compressor wheel, part number (P/N) 23084158, and with a serial 
number listed in Figure 1 to paragraph (c) of this AD.
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[[Page 45772]]

[GRAPHIC] [TIFF OMITTED] TR30JY20.023

(d) Subject

    Joint Aircraft System Component (JASC) Code 7230, Turbine Engine 
Compressor Section.

(e) Unsafe Condition

    This AD was prompted by an in-flight shutdown of an engine 
during a revenue flight and subsequent investigation by the 
manufacturer that revealed a crack in the 3rd-stage compressor 
wheel. The FAA is issuing this AD to prevent failure of the 3rd-
stage compressor wheel. The unsafe condition, if not addressed, 
could result in an uncontained release of the 3rd-stage compressor 
wheel, damage to the engine, and damage to the airplane.

(f) Compliance

    Comply with this AD within the compliance times specified, 
unless already done.

(g) Required Actions

    (1) For AE 3007A, AE 3007A1, AE 3007A1/1, AE 3007A1/2, AE 
3007A1/3, AE 3007A1P, and AE 3007A3 model turbofan engines, prior to 
the 3rd-stage compressor wheel accumulating the cycles listed in 
Table 1 to paragraph (g)(1) of this AD or before further flight, 
whichever occurs later after the effective date of this AD, remove 
the affected 3rd-stage compressor wheel and replace with a part 
eligible for installation.
[GRAPHIC] [TIFF OMITTED] TR30JY20.024

    (2) For AE 3007A1E model turbofan engines, prior to the 3rd-
stage compressor wheel accumulating the cycles listed in Table 2 to 
paragraph (g)(2) of this AD or before further flight, whichever 
occurs later after the effective date of this AD, remove the 
affected 3rd-stage compressor wheel and replace with a part eligible 
for installation.

[[Page 45773]]

[GRAPHIC] [TIFF OMITTED] TR30JY20.025

(h) Definitions

    (1) For the purpose of this AD, a part eligible for installation 
is a 3rd-stage compressor wheel that does not have a P/N and a 
serial number listed in the Applicability, paragraph (c) of this AD.
    (2) 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 flanges, except that the 
separation of engine flanges solely for the purposes of 
transportation of the engine without subsequent engine maintenance 
does not constitute an engine shop visit.

(i) Special Flight Permit

    (1) Special flight permits, as described in Section 21.197 and 
Section 21.199 of the Federal Aviation Regulations (14 CFR 21.197 
and 21.199), are subject to the requirements of paragraph (i)(1)(i) 
of this AD.
    (i) Operators may perform a one-time non-revenue ferry flight to 
a location where the engine can be removed from service. This ferry 
flight must be performed with only essential flight crew.
    (ii) [Reserved]
    (2) [Reserved]

(j) Alternative Methods of Compliance (AMOCs)

    (1) The Manager, Chicago ACO, 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 (k) of this AD.
    (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.

(k) Related Information

    For more information about this AD, contact Kyri Zaroyiannis, 
Aerospace Engineer, Chicago ACO, FAA, 2300 E Devon Ave., Des 
Plaines, IL 60018; phone: (847) 294-7836; fax: (847) 294-7834; 
email: [email protected].

(l) Material Incorporated by Reference

    None.

    Issued on July 28, 2020.
Gaetano A. Sciortino,
Deputy Director for Strategic Initiatives, Compliance & Airworthiness 
Division, Aircraft Certification Service.
[FR Doc. 2020-16680 Filed 7-28-20; 4:15 pm]
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