Airworthiness Directives; International Aero Engines AG Turbofan Engines, 458-461 [2021-00053]

Download as PDF 458 Federal Register / Vol. 86, No. 3 / Wednesday, January 6, 2021 / Rules and Regulations website through a single web page portal; and (2) State clearly and prominently on its web page portal that guidance documents lack the force and effect of law, except as authorized by law or as incorporated into a contract. (g) Rescinded Guidance Documents. All guidance documents, as defined in this Part, that are not made available through DOE’s website portal as described in paragraph (f) of this section shall be deemed rescinded, unless and until DOE subjects such guidance documents to the procedures of this section. Except for the purposes of establishing historical facts, DOE shall not cite, use, or rely upon rescinded guidance documents unless and until DOE subjects such guidance documents to the procedures of this section. jbell on DSKJLSW7X2PROD with RULES § 1061.4 Petitions for withdrawal or modification of guidance documents. (a) Filing a petition. Any person may petition DOE to withdraw or modify a guidance document. The petition must be addressed to the Office of the General Counsel, Attention: Petition for Modification or Withdrawal of Guidance Document, and either: (1) Sent by mail addressed to: Forrestal Building, U.S. Department of Energy, 1000 Independence Avenue SW, Washington, DC 20585; (2) Sent by email to Guidance@ hq.doe.gov; or (3) Hand delivered to DOE at 1000 Independence Avenue SW, Washington, DC 20585. (b) Content of petition. For each petition filed under this section, the petitioner must: (1) Specify the petitioner’s: (i) Name, or if the petitioner is an organization, the name of the organization and the name and authority of the individual who signed the petition on behalf of the organizational or corporate petitioner; (ii) Telephone number; (iii) Mailing address; and (iv) Email address (if available). (2) Identify the guidance document to be withdrawn or modified; and (3) Be signed by the petitioner or authorized representative. (c) Additional information. To assist DOE in responding appropriately to the petition, a petitioner should also: (1) Present any specific problems or issues that the petitioner believes are associated with the guidance document, including any specific circumstances in which the guidance document is incorrect, incomplete, obsolete, or inadequate; (2) Present any proposed solution to either modify or withdraw the guidance VerDate Sep<11>2014 16:19 Jan 05, 2021 Jkt 253001 document, including a discussion of how the petitioner’s proposed solution resolves the issues identified under paragraph (c)(1) of this section; (3) In the case of a petition for modification of a guidance document, specify any modifications to the text of the document that petitioner seeks; (4) Cite, enclose, or reference technical, scientific, or other data or information supporting the petitioner’s assertions under paragraphs (c)(1) and (2) of this section. (d) Public comment. DOE shall publish a petition for modification or withdrawal of a guidance document and supporting documentation in the Federal Register, and provide opportunity for public comment. DOE may dispense with the notice and comment procedures in this paragraph where DOE finds for good cause that notice and public comment are impracticable, unnecessary, or contrary to the public interest, or where exigency, safety, health, or other compelling cause warrants an exemption from the notice and comment procedures in this paragraph. DOE shall incorporate such finding and a brief statement of the reasons for such finding into its decision on the petition. (e) Confidential business information. In accordance with the provisions set forth in 10 CFR 1004.11, any request for confidential treatment of any information contained in a petition for modifying or withdrawing a guidance document, or in supporting documentation, must be accompanied by a copy of the petition or supporting documentation from which the information claimed to be confidential has been deleted. DOE shall publish in the Federal Register the petition and supporting documents from which confidential information, as determined by DOE, has been deleted in accordance with 10 CFR 1004.11. (f) Disposition of petition. DOE shall determine the appropriate disposition of a petition after consideration of the petition and any supporting documents received, as well as any public comment received on the petition, within 90 days of DOE’s publication in the Federal Register of such petition, to the maximum extent practicable. (g) Exhaustion of administrative remedies. Before any DOE action under this part is final, a person must exhaust his or her administrative remedies. To exhaust administrative remedies under this part, a person must: (1) Avail himself or herself of the procedures in this section; and PO 00000 Frm 00020 Fmt 4700 Sfmt 4700 (2) Receive a final disposition from DOE in accordance with paragraph (f) of this section. [FR Doc. 2020–27875 Filed 1–5–21; 8:45 am] BILLING CODE 6450–01–P DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA–2020–1168; Project Identifier AD–2020–01568–E; Amendment 39–21379; AD 2021–01–03] RIN 2120–AA64 Airworthiness Directives; International Aero Engines AG 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 International Aero Engines AG (IAE) V2500–A1, V2522–A5, V2524–A5, V2525–D5, V2527–A5, V2527E–A5, V2527M–A5, V2528–D5, V2530–A5, V2531–E5, and V2533–A5 model turbofan engines. This AD was prompted by a root cause analysis of an event involving an uncontained failure of a high-pressure turbine (HPT) 1ststage disk that resulted in high-energy debris penetrating the engine cowling. This AD requires removing certain HPT 1st-stage and HPT 2nd-stage disks from service. The FAA is issuing this AD to address the unsafe condition on these products. SUMMARY: This AD is effective January 21, 2021. The FAA must receive comments on this AD by February 22, 2021. 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: Deliver to Mail address above between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. DATES: Examining the AD Docket You may examine the AD docket at https://www.regulations.gov by E:\FR\FM\06JAR1.SGM 06JAR1 Federal Register / Vol. 86, No. 3 / Wednesday, January 6, 2021 / Rules and Regulations searching for and locating Docket No. FAA–2020–1168; 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: Nicholas Paine, Aviation Safety Engineer, ECO Branch, FAA, 1200 District Avenue, Burlington, MA 01803; phone: (781) 238–7116; fax: (781) 238– 7199; email: nicholas.j.paine@faa.gov. SUPPLEMENTARY INFORMATION: Background On March 18, 2020, an Airbus Model A321–231 airplane, powered by IAE V2533–A5 model turbofan engines, experienced an uncontained HPT 1ststage disk failure that resulted in highenergy debris penetrating the engine cowling. Based on a preliminary analysis of this event, on March 21, 2020, the FAA issued Emergency AD 2020–07–51, which requires the removal from service of certain HPT 1ststage disks installed on IAE V2522–A5, V2524–A5, V2525–D5, V2527–A5, V2527E–A5, V2527M–A5, V2528–D5, V2530–A5, and V2533–A5 model turbofan engines. Since the FAA issued AD 2020–07– 51, the manufacturer conducted a root cause analysis and identified a different population of HPT 1st-stage and HPT 2nd-stage disks that are affected by the unsafe condition and require removal from service. This condition, if not addressed, could result in failure of the HPT, uncontained HPT failure, damage to the engine, damage to the airplane, and loss of the airplane. The FAA is issuing this AD to address the unsafe condition on these products. jbell on DSKJLSW7X2PROD with RULES FAA’s Determination The FAA is issuing this AD because the agency has determined the unsafe condition described previously is likely to exist or develop in other products of the same type design. AD Requirements This AD requires the removal from service of certain HPT 1st-stage and HPT 2nd-stage disks installed on IAE V2500–A1, V2522–A5, V2524–A5, V2525–D5, V2527–A5, V2527E–A5, V2527M–A5, V2528–D5, V2530–A5, V2531–E5, and V2533–A5 model turbofan engines. Interim Action The design approval holder is currently developing a modification to address the unsafe condition identified in this AD. Once this modification is VerDate Sep<11>2014 16:19 Jan 05, 2021 Jkt 253001 developed, the FAA might consider additional rulemaking. 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. 551 et seq.) 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 thirty 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 foregoing notice and comment prior to adoption of this rule. On March 18, 2020, an Airbus Model A321–231 airplane, powered by IAE V2533–A5 model turbofan engines, experienced an uncontained HPT 1ststage disk failure that resulted in an aborted takeoff. The uncontained failure of the HPT 1st-stage disk resulted in high-energy debris penetrating the engine cowling. The FAA published Emergency AD (EAD) 2020–07–51 on March 21, 2020 (followed by publication in the Federal Register on April 13, 2020, as a Final Rule, Request for Comments (85 FR 20402)), to remove from service HPT 1st-stage disks identified as having the highest risk of failure. Based on the root cause analysis performed since that event, the manufacturer has identified a different population of affected HPT 1st-stage and HPT 2nd-stage disks that are affected by the same unsafe condition and require removal from service. These HPT disks have the highest risk of failure and require removal within 50 flight cycles or 30 days after the effective date of this AD, whichever comes first, to prevent additional HPT disk failures and maintain an acceptable level of safety. This unsafe condition may result in loss of the airplane. The FAA considers removal of certain HPT 1st-stage and HPT 2nd-stage disks to be an urgent safety issue. Accordingly, notice and opportunity for prior public comment are impracticable and contrary to the 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 PO 00000 Frm 00021 Fmt 4700 Sfmt 4700 459 than 30 days, for the same reasons the FAA found good cause to forego notice and comment. 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 ADDRESSES. Include the docket number FAA–2020– 1168 and Project Identifier AD–2020– 01568–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 agency will also post a report summarizing each substantive verbal contact received about this final rule. 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 AD 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 AD, 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 AD. Submissions containing CBI should be sent to Nicholas Paine, Aviation Safety Engineer, ECO Branch, FAA, 1200 District Avenue, Burlington, MA 01803. 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 FAA has determined that it has good cause to adopt this rule without prior notice and comment, RFA analysis is not required. E:\FR\FM\06JAR1.SGM 06JAR1 460 Federal Register / Vol. 86, No. 3 / Wednesday, January 6, 2021 / Rules and Regulations Costs of Compliance The FAA estimates 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 HPT 1st-stage or HPT 2nd-stage disk from service. 92 work-hours × $85 per hour = $7,820. 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, and (2) Will not affect intrastate aviation in Alaska. List of Subjects in 14 CFR Part 39 jbell on DSKJLSW7X2PROD with RULES 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: VerDate Sep<11>2014 16:19 Jan 05, 2021 Jkt 253001 Parts cost 1. The authority citation for part 39 continues to read as follows: ■ Authority: 49 U.S.C. 106(g), 40113, 44701. [Amended] 2. The FAA amends § 39.13 by adding the following new airworthiness directive: ■ 2021–01–03 International Aero Engines AG: Amendment 39–21379; Docket No. FAA–2020–1168; Project Identifier AD– 2020–01568–E. (a) Effective Date This airworthiness directive (AD) is effective January 21, 2021. (b) Affected ADs None. (c) Applicability This AD applies to International Aero Engines AG (IAE) V2500–A1, V2522–A5, V2524–A5, V2525–D5, V2527–A5, V2527E– A5, V2527M–A5, V2528–D5, V2530–A5, V2531–E5, and V2533–A5 model turbofan engines with an installed: (1) High-pressure turbine (HPT) 1st-stage disk, part number (P/N) 2A5001, with a serial number (S/N) listed in Figure 1 to paragraph (c) of this AD; or (2) HPT 2nd-stage disk, P/N 2A4802 or 2A1202, with an S/N listed in Figure 2 to paragraph (c) of this AD. Figure 1 to Paragraph (c)—HPT 1st-Stage Disks, P/N 2A5001 HPT 1st-Stage Disk S/N PKLBMR8122 PKLBN95688 PKLBPD1563 PKLBR09920 PKLBR16496 PKLBR19225 PKLBR25636 PKLBR28076 PKLBR34562 PKLBR52354 PKLBR69530 PKLBR82479 PKLBRJ9427 PKLBRN5510 PKLBRT5081 PKLBRU7299 PKLBRW8547 PKLBRW9395 PKLBSJ7141 PO 00000 Frm 00022 Fmt 4700 Sfmt 4700 $307,820 Cost on U.S. operators $1,231,280 PKLBSM8377 PART 39—AIRWORTHINESS DIRECTIVES § 39.13 $300,000 Cost per product Figure 2 to Paragraph (c)—HPT 2nd-Stage Disks, P/N 2A4802 or 2A1202 HPT 2nd-Stage Disk S/N PKLBJ09996 PKLBJ13601 PKLBJ80883 PKLBKL8627 PKLBLJ9333 PKLBP87124 PKLBPY9696 PKLBSL8699 (d) Subject Joint Aircraft System Component (JASC) Code 7250, Turbine Section. (e) Unsafe Condition This AD was prompted by an analysis performed by the manufacturer of an event involving an uncontained failure of an HPT 1st-stage disk that resulted in high-energy debris penetrating the engine cowling. The FAA is issuing this AD to prevent failure of the HPT 1st-stage and HPT 2nd-stage disks. The unsafe condition, if not addressed, could result in uncontained HPT disk failure, damage to the engine, damage to the airplane, and loss of the airplane. (f) Compliance Comply with this AD within the compliance times specified, unless already done. (g) Required Actions (1) For IAE model turbofan engines with an HPT 1st-stage disk, P/N 2A5001, with a S/N listed in Figure 1 to paragraph (c) of this AD, within 50 flight cycles or 30 days after the effective date of this AD, whichever comes first, remove the HPT 1st-stage disk from service. (2) For IAE model turbofan engines with an HPT 2nd-stage disk, P/N 2A4802 or 2A1202, with a S/N listed in Figure 2 to paragraph (c) of this AD, within 50 flight cycles or 30 days after the effective date of this AD, whichever comes first, remove the HPT 2nd-stage disk from service. (h) Installation Prohibition After the effective date of this AD, do not install onto any engine an HPT 1st-stage or HPT 2nd-stage disk with a P/N and S/N listed in paragraph (c) of this AD. (i) Alternative Methods of Compliance (AMOCs) (1) The Manager, ECO Branch, FAA, has the authority to approve AMOCs for this AD, E:\FR\FM\06JAR1.SGM 06JAR1 Federal Register / Vol. 86, No. 3 / Wednesday, January 6, 2021 / Rules and Regulations 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. You may email your request to ANE-AD-AMOC@ faa.gov. (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. (j) Related Information For more information about this AD, contact Nicholas Paine, Aviation Safety Engineer, ECO Branch, FAA, 1200 District Avenue, Burlington, MA 01803; phone: (781) 238–7116; fax: (781) 238–7199; email: nicholas.j.paine@faa.gov. (k) Material Incorporated by Reference None. Issued on December 28, 2020. Lance T. Gant, Director, Compliance & Airworthiness Division, Aircraft Certification Service. [FR Doc. 2021–00053 Filed 1–5–21; 8:45 am] BILLING CODE 4910–13–P DEPARTMENT OF COMMERCE Bureau of Industry and Security 15 CFR Part 774 [Docket No. 201215–0342] RIN 0694–AH89 Technical Amendments to the Export Administration Regulations: Export Control Classification Number 0Y521 Series Supplement—Extension of Software Specially Designed To Automate the Analysis of Geospatial Imagery Classification Bureau of Industry and Security, Commerce. ACTION: Interim final rule; technical amendment. AGENCY: On January 6, 2020, the Bureau of Industry and Security (BIS) amended the Export Administration Regulations (EAR) to add Software Specially Designed to Automate the Analysis of Geospatial Imagery to the 0Y521 Temporary Export Control Classification Numbers (ECCN) Series as 0D521. In this action BIS extends that status for a year pursuant to the 0Y521 series extension procedures. DATES: This rule is effective January 6, 2021. FOR FURTHER INFORMATION CONTACT: Aaron Amundson, Director, Information jbell on DSKJLSW7X2PROD with RULES SUMMARY: VerDate Sep<11>2014 16:19 Jan 05, 2021 Jkt 253001 Technology Division, Office of National Security and Technology Transfer Controls, at email Aaron.Amundson@ bis.doc.gov or by phone at (202) 482– 5299. SUPPLEMENTARY INFORMATION: Background On January 6, 2020, the Bureau of Industry and Security (BIS) amended the Export Administration Regulations (EAR) with an interim final rule to add Software Specially Designed to Automate the Analysis of Geospatial Imagery to the 0Y521 Temporary Export Control Classification Numbers (ECCN) Series as 0D521. More specifically, the software was described as Geospatial imagery ‘‘software’’ ‘‘specially designed’’ for training a Deep Convolutional Neural Network to automate the analysis of geospatial imagery and point clouds. See 85 FR 459. BIS established the ECCN 0Y521 series in a final rule published April 13, 2012 (72 FR 22191) (hereinafter ‘‘April 13 rule’’) to identify items that warrant control on the Commerce Control List (CCL) but are not yet identified in an existing ECCN. Items in the 0Y521 series of ECCNs are added upon a determination by the Department of Commerce, with the concurrence of the Departments of Defense and State, and other agencies as appropriate, that the items warrant control for export because the items may provide a significant military or intelligence advantage to the United States or because foreign policy reasons justify control. The ECCN 0Y521 series is a temporary holding classification. Under the procedures established in the April 13 rule and codified at § 742.6(a)(8)(iii) of the EAR, items classified under ECCN 0Y521 remain so classified for one year from the date they are listed in supplement no. 5 to part 774 of the EAR, unless the items are re-classified under a different ECCN or the 0Y521 classification is extended. BIS may extend an item’s ECCN 0Y521 classification for two one-year periods, provided that the U.S. Government has submitted a proposal to the relevant multilateral regime(s) (e.g., the Wassenaar Arrangement) to obtain multilateral controls over the item, with the understanding that multilateral controls are preferable when practical. Further extension beyond three years may occur only if the Under Secretary for Industry and Security makes a determination that such extension is in the national security or foreign policy interest of the United States. Any extension or re-extension of control of PO 00000 Frm 00023 Fmt 4700 Sfmt 4700 461 an ECCN 0Y521 item, including the determination by the Under Secretary, shall be published in the Federal Register. In this action, BIS extends the status of an item classified under a 0Y521 ECCN for a year consistent with procedures that allow such an extension. Specifically, in this case the U.S. Government submitted a proposal for multilateral control of the 0D521 software specially designed to automate the analysis of geospatial imagery, as described in the January 6, 2020 interim final rule, to the relevant multilateral regime (the Wassenaar Arrangement) in a timely manner, within the first year of the item’s 0D521 classification. However, due to the pandemic, the regime did not convene and therefore did not consider acceptance of the proposal. An extension of time is appropriate in order for the U.S. Government to continue its effort at the Wassenaar Arrangement in 2021. Export Control Reform Act of 2018 On August 13, 2018, the President signed into law the John S. McCain National Defense Authorization Act for Fiscal Year 2019, which included the Export Control Reform Act of 2018 (ECRA) (50 U.S.C. 4801–4852) that provides the legal basis for BIS’s principal authorities and serves as the authority under which BIS issues this rule. Rulemaking Requirements 1. Executive Orders 13563 and 12866 direct agencies to assess all costs and benefits of available regulatory alternatives and, if regulation is necessary, to select regulatory approaches that maximize net benefits (including potential economic, environmental, public health and safety effects, distribute impacts, and equity). Executive Order 13563 emphasizes the importance of quantifying both costs and benefits, of reducing costs, of harmonizing rules, and of promoting flexibility. This interim final rule has been designated to be not significant for purposes of Executive Order 12866. The requirements of Executive Order 13771 do not apply because the rule is not significant. 2. Notwithstanding any other provision of law, no person is required to respond to, nor is subject to a penalty for failure to comply with a collection of information, subject to the requirements of the Paperwork Reduction Act of 1995 (44 U.S.C. 3501 et seq.) (PRA), unless that collection of information displays a currently valid OMB control number. This rule does not involve any collection of information. E:\FR\FM\06JAR1.SGM 06JAR1

Agencies

[Federal Register Volume 86, Number 3 (Wednesday, January 6, 2021)]
[Rules and Regulations]
[Pages 458-461]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2021-00053]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2020-1168; Project Identifier AD-2020-01568-E; 
Amendment 39-21379; AD 2021-01-03]
RIN 2120-AA64


Airworthiness Directives; International Aero Engines AG Turbofan 
Engines

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Final rule; request for comments.

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SUMMARY: The FAA is adopting a new airworthiness directive (AD) for 
certain International Aero Engines AG (IAE) V2500-A1, V2522-A5, V2524-
A5, V2525-D5, V2527-A5, V2527E-A5, V2527M-A5, V2528-D5, V2530-A5, 
V2531-E5, and V2533-A5 model turbofan engines. This AD was prompted by 
a root cause analysis of an event involving an uncontained failure of a 
high-pressure turbine (HPT) 1st-stage disk that resulted in high-energy 
debris penetrating the engine cowling. This AD requires removing 
certain HPT 1st-stage and HPT 2nd-stage disks from service. The FAA is 
issuing this AD to address the unsafe condition on these products.

DATES: This AD is effective January 21, 2021.
    The FAA must receive comments on this AD by February 22, 2021.

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: Deliver to Mail address above between 9 
a.m. and 5 p.m., Monday through Friday, except Federal holidays.

Examining the AD Docket

    You may examine the AD docket at https://www.regulations.gov by

[[Page 459]]

searching for and locating Docket No. FAA-2020-1168; 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: Nicholas Paine, Aviation Safety 
Engineer, ECO Branch, FAA, 1200 District Avenue, Burlington, MA 01803; 
phone: (781) 238-7116; fax: (781) 238-7199; email: 
[email protected].

SUPPLEMENTARY INFORMATION:

Background

    On March 18, 2020, an Airbus Model A321-231 airplane, powered by 
IAE V2533-A5 model turbofan engines, experienced an uncontained HPT 
1st-stage disk failure that resulted in high-energy debris penetrating 
the engine cowling. Based on a preliminary analysis of this event, on 
March 21, 2020, the FAA issued Emergency AD 2020-07-51, which requires 
the removal from service of certain HPT 1st-stage disks installed on 
IAE V2522-A5, V2524-A5, V2525-D5, V2527-A5, V2527E-A5, V2527M-A5, 
V2528-D5, V2530-A5, and V2533-A5 model turbofan engines.
    Since the FAA issued AD 2020-07-51, the manufacturer conducted a 
root cause analysis and identified a different population of HPT 1st-
stage and HPT 2nd-stage disks that are affected by the unsafe condition 
and require removal from service. This condition, if not addressed, 
could result in failure of the HPT, uncontained HPT failure, damage to 
the engine, damage to the airplane, and loss of 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 has determined the 
unsafe condition described previously is likely to exist or develop in 
other products of the same type design.

AD Requirements

    This AD requires the removal from service of certain HPT 1st-stage 
and HPT 2nd-stage disks installed on IAE V2500-A1, V2522-A5, V2524-A5, 
V2525-D5, V2527-A5, V2527E-A5, V2527M-A5, V2528-D5, V2530-A5, V2531-E5, 
and V2533-A5 model turbofan engines.

Interim Action

    The design approval holder is currently developing a modification 
to address the unsafe condition identified in this AD. Once this 
modification is developed, the FAA might consider additional 
rulemaking.

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. 551 et seq.) 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 thirty 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 foregoing notice and comment prior to adoption of this rule. 
On March 18, 2020, an Airbus Model A321-231 airplane, powered by IAE 
V2533-A5 model turbofan engines, experienced an uncontained HPT 1st-
stage disk failure that resulted in an aborted takeoff. The uncontained 
failure of the HPT 1st-stage disk resulted in high-energy debris 
penetrating the engine cowling. The FAA published Emergency AD (EAD) 
2020-07-51 on March 21, 2020 (followed by publication in the Federal 
Register on April 13, 2020, as a Final Rule, Request for Comments (85 
FR 20402)), to remove from service HPT 1st-stage disks identified as 
having the highest risk of failure. Based on the root cause analysis 
performed since that event, the manufacturer has identified a different 
population of affected HPT 1st-stage and HPT 2nd-stage disks that are 
affected by the same unsafe condition and require removal from service. 
These HPT disks have the highest risk of failure and require removal 
within 50 flight cycles or 30 days after the effective date of this AD, 
whichever comes first, to prevent additional HPT disk failures and 
maintain an acceptable level of safety. This unsafe condition may 
result in loss of the airplane.
    The FAA considers removal of certain HPT 1st-stage and HPT 2nd-
stage disks to be an urgent safety issue. Accordingly, notice and 
opportunity for prior public comment are impracticable and contrary to 
the 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 forego notice and comment.

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 
ADDRESSES. Include the docket number FAA-2020-1168 and Project 
Identifier AD-2020-01568-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 agency will also post a report summarizing each 
substantive verbal contact received about this final rule.

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 AD 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 AD, 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 AD. Submissions containing CBI should be sent to 
Nicholas Paine, Aviation Safety Engineer, ECO Branch, FAA, 1200 
District Avenue, Burlington, MA 01803. 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 FAA has determined 
that it has good cause to adopt this rule without prior notice and 
comment, RFA analysis is not required.

[[Page 460]]

Costs of Compliance

    The FAA estimates 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 HPT 1st-stage or HPT 2nd-stage   92 work-hours x $85 per         $300,000        $307,820      $1,231,280
 disk from service.                      hour = $7,820.
----------------------------------------------------------------------------------------------------------------

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, and
    (2) Will not affect intrastate aviation in Alaska.

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:

2021-01-03 International Aero Engines AG: Amendment 39-21379; Docket 
No. FAA-2020-1168; Project Identifier AD-2020-01568-E.

(a) Effective Date

    This airworthiness directive (AD) is effective January 21, 2021.

(b) Affected ADs

    None.

(c) Applicability

    This AD applies to International Aero Engines AG (IAE) V2500-A1, 
V2522-A5, V2524-A5, V2525-D5, V2527-A5, V2527E-A5, V2527M-A5, V2528-
D5, V2530-A5, V2531-E5, and V2533-A5 model turbofan engines with an 
installed:
    (1) High-pressure turbine (HPT) 1st-stage disk, part number (P/
N) 2A5001, with a serial number (S/N) listed in Figure 1 to 
paragraph (c) of this AD; or
    (2) HPT 2nd-stage disk, P/N 2A4802 or 2A1202, with an S/N listed 
in Figure 2 to paragraph (c) of this AD.

Figure 1 to Paragraph (c)--HPT 1st-Stage Disks, P/N 2A5001

HPT 1st-Stage Disk S/N
    PKLBMR8122
    PKLBN95688
    PKLBPD1563
    PKLBR09920
    PKLBR16496
    PKLBR19225
    PKLBR25636
    PKLBR28076
    PKLBR34562
    PKLBR52354
    PKLBR69530
    PKLBR82479
    PKLBRJ9427
    PKLBRN5510
    PKLBRT5081
    PKLBRU7299
    PKLBRW8547
    PKLBRW9395
    PKLBSJ7141
    PKLBSM8377

Figure 2 to Paragraph (c)--HPT 2nd-Stage Disks, P/N 2A4802 or 2A1202

HPT 2nd-Stage Disk S/N
    PKLBJ09996
    PKLBJ13601
    PKLBJ80883
    PKLBKL8627
    PKLBLJ9333
    PKLBP87124
    PKLBPY9696
    PKLBSL8699

(d) Subject

    Joint Aircraft System Component (JASC) Code 7250, Turbine 
Section.

(e) Unsafe Condition

    This AD was prompted by an analysis performed by the 
manufacturer of an event involving an uncontained failure of an HPT 
1st-stage disk that resulted in high-energy debris penetrating the 
engine cowling. The FAA is issuing this AD to prevent failure of the 
HPT 1st-stage and HPT 2nd-stage disks. The unsafe condition, if not 
addressed, could result in uncontained HPT disk failure, damage to 
the engine, damage to the airplane, and loss of the airplane.

(f) Compliance

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

(g) Required Actions

    (1) For IAE model turbofan engines with an HPT 1st-stage disk, 
P/N 2A5001, with a S/N listed in Figure 1 to paragraph (c) of this 
AD, within 50 flight cycles or 30 days after the effective date of 
this AD, whichever comes first, remove the HPT 1st-stage disk from 
service.
    (2) For IAE model turbofan engines with an HPT 2nd-stage disk, 
P/N 2A4802 or 2A1202, with a S/N listed in Figure 2 to paragraph (c) 
of this AD, within 50 flight cycles or 30 days after the effective 
date of this AD, whichever comes first, remove the HPT 2nd-stage 
disk from service.

(h) Installation Prohibition

    After the effective date of this AD, do not install onto any 
engine an HPT 1st-stage or HPT 2nd-stage disk with a P/N and S/N 
listed in paragraph (c) of this AD.

(i) Alternative Methods of Compliance (AMOCs)

    (1) The Manager, ECO Branch, FAA, has the authority to approve 
AMOCs for this AD,

[[Page 461]]

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. You may email your request to [email protected].
    (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.

(j) Related Information

    For more information about this AD, contact Nicholas Paine, 
Aviation Safety Engineer, ECO Branch, FAA, 1200 District Avenue, 
Burlington, MA 01803; phone: (781) 238-7116; fax: (781) 238-7199; 
email: [email protected].

(k) Material Incorporated by Reference

    None.

    Issued on December 28, 2020.
Lance T. Gant,
Director, Compliance & Airworthiness Division, Aircraft Certification 
Service.
[FR Doc. 2021-00053 Filed 1-5-21; 8:45 am]
BILLING CODE 4910-13-P