Airworthiness Directives; International Aero Engines, LLC Turbofan Engines, 50610-50614 [2021-19600]

Download as PDF 50610 Federal Register / Vol. 86, No. 173 / Friday, September 10, 2021 / Rules and Regulations for loan guarantees, and when required, an executed Standard Form LLL, ‘‘Disclosure of Lobbying Activities,’’ (see section 319, Pub. L. 101–121 (31 U.S.C. 1352)). (4) Executed copy of Form AD–1047, ‘‘Certification Regarding Debarment, Suspension, and Other Responsibility Matters—Primary Covered Transactions.’’ (5) Borrower’s determination of loan maturity. (6) A statement that the borrower is or is not delinquent on any Federal debt, such as income tax obligations or a loan or loan guarantee from another Federal agency. If delinquent, the reasons for the delinquency must be explained and RUS will take such explanation into consideration in deciding whether to approve the loan. RUS Form 490, ‘‘Application for Telephone Loan or Guarantee,’’ contains a section for providing the required statement and any appropriate explanation. (7) Any other supporting data required by the Administrator. * * * * * (f) For all applications that request funding for retail broadband as defined in 7 CFR 1735.2, the application must include all information required for the public notice as stated in 7 CFR 1735.23(a). * * * * * Subpart J—Final Loan Approval Procedures 14. Amend § 1737.90 by revising paragraph (a)(6) to read as follows: ■ jbell on DSKJLSW7X2PROD with RULES § 1737.90 Loan approval requirements. (a) * * * (6) All environmental review requirements must be met in accordance with 7 CFR part 1970. The Agency may obligate, but not disperse, funds under the program pursuant to 7 U.S.C. 950cc– 1, before the completion of the otherwise required environmental, historical, or other types of reviews if the Secretary of Agriculture determines that subsequent site-specific review shall be adequate and easily accomplished for the location of towers, poles, or other broadband facilities in the service area of the awardee without compromising the project or the required reviews. * * * * * Christopher A. McLean, Acting Administrator, Rural Utilities Service. [FR Doc. 2021–19319 Filed 9–9–21; 8:45 am] BILLING CODE 3410–15–P VerDate Sep<11>2014 21:14 Sep 09, 2021 Jkt 253001 DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA–2021–0780; Project Identifier AD–2021–00916–E; Amendment 39–21728; AD 2021–19–10] RIN 2120–AA64 Airworthiness Directives; International Aero Engines, LLC Turbofan Engines 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: Mark Taylor, Aviation Safety Engineer, ECO Branch, FAA, 1200 District Avenue, Burlington, MA 01803; phone: (781) 238–7229; fax: (781) 238–7199; email: Mark.Taylor@faa.gov. SUPPLEMENTARY INFORMATION: Examining the AD Docket 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 (followed by publication in the Federal Register on April 13, 2020, as a Final Rule, Request for Comments (85 FR 20402)), 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. Pratt & Whitney (PW) determined that the failure of the V2533–A5 model turbofan engine was due to an undetected subsurface material defect in an HPT disk that may affect the life of the part. In June 2021, PW expanded its root cause analysis to include a review of records for all other IAE and PW engines that contain parts of similar material. On July 29, 2021, PW provided its PW1100G analysis results to the FAA. PW’s analysis identified a different population of HPT 1st-stage and HPT 2nd-stage disks installed on IAE PW1122G–JM, PW1124G1–JM, PW1124G–JM, PW1127G1–JM, PW1127GA–JM, PW1127G–JM, PW1129G–JM, PW1130G–JM, PW1133GA–JM, and PW1133G–JM model turbofan engines that are also affected by the unsafe condition in AD 2020–07–51 and require removal from service. This condition, if not addressed, could result in uncontained HPT disk failure, release of high-energy debris, 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. You may examine the AD docket at https://www.regulations.gov by searching for and locating Docket No. FAA–2021–0780; or in person at Docket Operations between 9 a.m. and 5 p.m., Monday through Friday, except Federal 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. 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, LLC (IAE) PW1122G–JM, PW1124G1–JM, PW1124G–JM, PW1127G1–JM, PW1127GA–JM, PW1127G–JM, PW1129G–JM, PW1130G–JM, PW1133GA–JM, and PW1133G–JM 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) disk that resulted in high-energy debris penetrating the engine cowling on an Airbus Model A321–231 airplane, powered by IAE V2533–A5 model turbofan engines. 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 September 27, 2021. The FAA must receive comments on this AD by October 25, 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. SUMMARY: PO 00000 Frm 00008 Fmt 4700 Sfmt 4700 E:\FR\FM\10SER1.SGM 10SER1 Federal Register / Vol. 86, No. 173 / Friday, September 10, 2021 / Rules and Regulations AD Requirements This AD requires the removal from service of certain HPT 1st-stage and HPT 2nd-stage disks installed on PW1122G–JM, PW1124G1–JM, PW1124G–JM, PW1127G1–JM, PW1127GA–JM, PW1127G–JM, PW1129G–JM, PW1130G–JM, PW1133GA–JM, and PW1133G–JM model turbofan engines. 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. PW determined that the failure of the V2533–A5 model turbofan engine was due to an undetected subsurface material defect in an HPT disk that may affect the life of the part. Based on the follow-on analysis performed since that event, PW has identified a different population of affected HPT 1st-stage and HPT 2nd-stage disks installed on IAE PW1122G–JM, PW1124G1–JM, PW1124G–JM, PW1127G1–JM, PW1127GA–JM, PW1127G–JM, PW1129G–JM, PW1130G–JM, PW1133GA–JM, and PW1133G–JM model turbofan engines that are affected by the same unsafe condition as contained in AD 2020–07–51 and require removal from service. These HPT disks have the highest risk of failure and require removal within 30 days after the effective date of this AD 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 1ststage 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 ‘‘Docket No. FAA–2021–0780 and Project Identifier AD–2021–00916– 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 50611 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 Mark Taylor, 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. Costs of Compliance The FAA estimates that this AD affects 3 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. 94 work-hours × $85 per hour = $7,990 ........ jbell on DSKJLSW7X2PROD 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. VerDate Sep<11>2014 21:14 Sep 09, 2021 Jkt 253001 Parts cost 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 PO 00000 Frm 00009 Fmt 4700 Sfmt 4700 $171,430 Cost per product $179,420 Cost on U.S. operators $538,260 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 E:\FR\FM\10SER1.SGM 10SER1 50612 Federal Register / Vol. 86, No. 173 / Friday, September 10, 2021 / Rules and Regulations 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. The Amendment Accordingly, under the authority delegated to me by the Administrator, the FAA amends 14 CFR part 39 as follows: (a) Effective Date PART 39—AIRWORTHINESS DIRECTIVES (c) Applicability This AD applies to International Aero Engines, LLC (IAE) PW1122G–JM, PW1124G1–JM, PW1124G–JM, PW1127G1– JM, PW1127GA–JM, PW1127G–JM, PW1129G–JM, PW1130G–JM, PW1133GA– JM, and PW1133G–JM model turbofan engines with an installed: (1) High-pressure turbine (HPT) 1st-stage disk, part number (P/N) 30G6201 or 30G7301, with a serial number (S/N) listed in Figure 1 to paragraph (c) of this AD; or (2) HPT 2nd-stage disk, P/N 30G5502 or 30G6602, with an S/N listed in Figure 2 to paragraph (c) of this AD. 1. The authority citation for part 39 continues to read as follows: ■ Authority: 49 U.S.C. 106(g), 40113, 44701. § 39.13 [Amended] List of Subjects in 14 CFR Part 39 2. The FAA amends § 39.13 by adding the following new airworthiness directive: Air transportation, Aircraft, Aviation safety, Incorporation by reference, Safety. 2021–19–10 International Aero Engines, LLC: Amendment 39–21728; Docket No. FAA–2021–0780; Project Identifier AD– 2021–00916–E. ■ This airworthiness directive (AD) is effective September 27, 2021. (b) Affected ADs None. BILLING CODE 4910–13–P VerDate Sep<11>2014 HPT 1st-Stage Disk PIN HPT 1st-Stage Disk SIN 30G6201 30G6201 30G6201 30G6201 30G6201 LKLBCG9614 LKLBDX9135 LKLBEF4499 LKLBCL8431 LKLBDX9233 30G6201 30G6201 30G6201 30G6201 30G6201 30G6201 30G6201 30G7301 30G7301 30G7301 LKLBDX9159 LKLBDX9273 LKLBBX3713 LKLBDX9200 LKLBDX9276 LKLBDA1782 LKLBEF4550 LKLBEK6166 LKLBEY0974 LKLBEJ7493 30G7301 30G7301 30G7301 30G7301 30G7301 30G7301 LKLBEY4908 LKLBEP5334 LKLBEX5852 LKLBFA2128 LKLBEY4944 LKLBGF8458 21:14 Sep 09, 2021 Jkt 253001 PO 00000 Frm 00010 Fmt 4700 Sfmt 4725 E:\FR\FM\10SER1.SGM 10SER1 ER10SE21.000</GPH> jbell on DSKJLSW7X2PROD with RULES Figure 1 to Paragraph (c)-HPT 1st-Stage Disk, PIN 30G6201 or 30G7301 Federal Register / Vol. 86, No. 173 / Friday, September 10, 2021 / Rules and Regulations 50613 HPT 2nd-Stage Disk PIN HPT 2nd-Stage Disk SIN 30G5502 30G5502 30G5502 30G5502 30G5502 30G5502 30G5502 30G5502 30G5502 30G5502 30G5502 30G5502 30G5502 30G5502 30G5502 30G5502 30G5502 30G5502 30G5502 30G5502 30G5502 30G5502 30G5502 30G5502 30G5502 30G5502 30G5502 30G5502 30G5502 30G5502 30G5502 LKLBCC0lll LKLBD40504 LKLBD40476 LKLBC29705 LKLBC29734 LKLBCP4546 LKLBCP4502 LKLBC02866 LKLBCP4501 LKLBBX2558 LKLBC02909 LKLBC02820 LKLBC02871 LKLBC02859 LKLBC02877 LKLBBX2564 LKLBCP4555 LKLBBX2576 LKLBC29762 LKLBC02860 LKLBC02881 LKLBC02864 LKLBC02876 LKLBC02880 LKLBD40491 LKLBC02873 LKLBBX2560 LKLBCP4504 LKLBC02840 LKLBD40433 LKLBD40437 30G6602 30G6602 30G6602 30G6602 30G6602 30G6602 30G6602 LKLBEX5800 LKLBEK1972 LKLBEP4213 LKLBFD4429 LKLBFD4445 LKLBGJ4215 LKLBFD4402 BILLING CODE 4910–13–C VerDate Sep<11>2014 21:14 Sep 09, 2021 Jkt 253001 PO 00000 Frm 00011 Fmt 4700 Sfmt 4700 E:\FR\FM\10SER1.SGM 10SER1 ER10SE21.001</GPH> jbell on DSKJLSW7X2PROD with RULES Figure 2 to Paragraph (c)- HPT 2nd-Stage Disk, PIN 30G5502 or 30G6602 50614 Federal Register / Vol. 86, No. 173 / Friday, September 10, 2021 / Rules and Regulations (d) Subject DEPARTMENT OF TRANSPORTATION Joint Aircraft System Component (JASC) Code 7250, Turbine Section. Federal Aviation Administration (e) Unsafe Condition 14 CFR Part 71 This AD was prompted by an analysis performed by Pratt & Whitney 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, release of high-energy debris, 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 30G6201 or 30G7301, with an S/N listed in Figure 1 to paragraph (c) of this AD, within 30 days after the effective days of the AD, remove the HPT 1ststage disk from service. (2) For IAE model turbofan engines with an HPT 2nd-stage disk, P/N 30G5502 or 30G6602, with an S/N listed in Figure 2 to paragraph (c) of this AD, within 30 days after the effective days of the AD, remove the HPT 2nd-stage disk from service. (h) Alternative Methods of Compliance (AMOCs) (1) The Manager, ECO Branch, FAA, has the authority to approve AMOCs for this AD, if requested using the procedures found in 14 CFR 39.19. In accordance with 14 CFR 39.19, send your request to your principal inspector or local Flight Standards District Office, as appropriate. If sending information directly to the manager of the certification office, send it to the attention of the person identified in paragraph (i) of this AD. Information may be emailed to: ANE-ADAMOC@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. (i) Related Information For more information about this AD, contact Mark Taylor, Aviation Safety Engineer, ECO Branch, FAA, 1200 District Avenue, Burlington, MA 01803; phone: (781) 238–7229; fax: (781) 238–7199; email: Mark.Taylor@faa.gov. (j) Material Incorporated by Reference jbell on DSKJLSW7X2PROD with RULES None. Issued on September 7, 2021. Lance T. Gant, Director, Compliance & Airworthiness Division, Aircraft Certification Service. [FR Doc. 2021–19600 Filed 9–8–21; 11:15 am] BILLING CODE 4910–13–P VerDate Sep<11>2014 21:14 Sep 09, 2021 Jkt 253001 [Docket No. FAA–2021–0529; Airspace Docket No. 21–ASO–18] RIN 2120–AA66 Amendment of Class E Airspace; Monroe, NC Federal Aviation Administration (FAA), DOT. ACTION: Final rule. AGENCY: This action amends Class E airspace extending upward from 700 feet above the surface for CharlotteMonroe Executive Airport, Monroe, NC. The FAA is taking this action as a result of the Charlotte Class B Biennial Review. This action also updates the airport’s name to Charlotte-Monroe Executive Airport (formerly Monroe Airport). In addition, this action updates the geographic coordinates of the airport to coincide with the FAA’s database. Controlled airspace is necessary for the safety and management of instrument flight rules (IFR) operations in the area. DATES: Effective 0901 UTC, December 2, 2021. The Director of the Federal Register approves this incorporation by reference action under 1 CFR part 51, subject to the annual revision of FAA Order 7400.11 and publication of conforming amendments. ADDRESSES: FAA Order 7400.11E, Airspace Designations and Reporting Points, and subsequent amendments can be viewed online at https:// www.faa.gov/air_traffic/publications/. For further information, you can contact the Airspace Policy Group, Federal Aviation Administration, 800 Independence Avenue SW, Washington, DC 20591; Telephone: (202) 267–8783. The Order is also available for inspection at the National Archives and Records Administration (NARA). For information on the availability of FAA Order 7400.11E at NARA, email fr.inspection@nara.gov or go to https:// www.archives.gov/federal-register/cfr/ ibr-locations.html. FOR FURTHER INFORMATION CONTACT: John Fornito, Operations Support Group, Eastern Service Center, Federal Aviation Administration, 1701 Columbia Ave., College Park, GA 30337; Telephone (404) 305–6364. SUPPLEMENTARY INFORMATION: SUMMARY: Authority for This Rulemaking The FAA’s authority to issue rules regarding aviation safety is found in Title 49 of the United States Code. PO 00000 Frm 00012 Fmt 4700 Sfmt 4700 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. This rulemaking is promulgated under the authority described in Subtitle VII, Part A, Subpart I, Section 40103. Under that section, the FAA is charged with prescribing regulations to assign the use of airspace necessary to ensure the safety of aircraft and the efficient use of airspace. This regulation is within the scope of that authority as it amends the Class E airspace extending upward from 700 feet above the surface in Monroe, NC, to support IFR operations in the area. History The FAA published a notice of proposed rulemaking in the Federal Register (86 FR 35419, July 6, 2021) for Docket No. FAA–2021–0529 to amend Class E airspace extending upward from 700 feet above the surface at CharlotteMonroe Executive Airport, Monroe, NC. Interested parties were invited to participate in this rulemaking effort by submitting written comments on the proposal to the FAA. One comment supporting this action was received. Class E airspace designations are published in Paragraph 6005 of FAA Order 7400.11E, dated July 21, 2020, and effective September 15, 2020, which is incorporated by reference in 14 CFR 71.1. The Class E airspace designations listed in this document will be published subsequently in the Order. Availability and Summary of Documents for Incorporation by Reference This document amends FAA Order 7400.11E, Airspace Designations and Reporting Points, dated July 21, 2020, and effective September 15, 2020. FAA Order 7400.11E is publicly available as listed in the ADDRESSES section of this document. FAA Order 7400.11E lists Class A, B, C, D, and E airspace areas, air traffic routes, and reporting points. The Rule The FAA is amending 14 CFR part 71 by amending the Class E airspace extending upward from 700 feet above the surface at Charlotte-Monroe Executive Airport, Monroe, NC, by increasing the radius to 9.0 miles, (formerly 6.3 miles). In addition, this action updates the airport’s name to Charlotte-Monroe Executive Airport (formerly Monroe Airport) and updates the geographical coordinates to coincide with the FAA’s database. FAA Order 7400.11, Airspace Designations and Reporting Points, is E:\FR\FM\10SER1.SGM 10SER1

Agencies

[Federal Register Volume 86, Number 173 (Friday, September 10, 2021)]
[Rules and Regulations]
[Pages 50610-50614]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2021-19600]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2021-0780; Project Identifier AD-2021-00916-E; 
Amendment 39-21728; AD 2021-19-10]
RIN 2120-AA64


Airworthiness Directives; International Aero Engines, LLC 
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 International Aero Engines, LLC (IAE) PW1122G-JM, PW1124G1-JM, 
PW1124G-JM, PW1127G1-JM, PW1127GA-JM, PW1127G-JM, PW1129G-JM, PW1130G-
JM, PW1133GA-JM, and PW1133G-JM 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) disk that resulted in high-
energy debris penetrating the engine cowling on an Airbus Model A321-
231 airplane, powered by IAE V2533-A5 model turbofan engines. 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 September 27, 2021.
    The FAA must receive comments on this AD by October 25, 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 
searching for and locating Docket No. FAA-2021-0780; 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: Mark Taylor, Aviation Safety Engineer, 
ECO Branch, FAA, 1200 District Avenue, Burlington, MA 01803; phone: 
(781) 238-7229; 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 (followed by 
publication in the Federal Register on April 13, 2020, as a Final Rule, 
Request for Comments (85 FR 20402)), 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.
    Pratt & Whitney (PW) determined that the failure of the V2533-A5 
model turbofan engine was due to an undetected subsurface material 
defect in an HPT disk that may affect the life of the part. In June 
2021, PW expanded its root cause analysis to include a review of 
records for all other IAE and PW engines that contain parts of similar 
material.
    On July 29, 2021, PW provided its PW1100G analysis results to the 
FAA. PW's analysis identified a different population of HPT 1st-stage 
and HPT 2nd-stage disks installed on IAE PW1122G-JM, PW1124G1-JM, 
PW1124G-JM, PW1127G1-JM, PW1127GA-JM, PW1127G-JM, PW1129G-JM, PW1130G-
JM, PW1133GA-JM, and PW1133G-JM model turbofan engines that are also 
affected by the unsafe condition in AD 2020-07-51 and require removal 
from service. This condition, if not addressed, could result in 
uncontained HPT disk failure, release of high-energy debris, 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.

[[Page 50611]]

AD Requirements

    This AD requires the removal from service of certain HPT 1st-stage 
and HPT 2nd-stage disks installed on PW1122G-JM, PW1124G1-JM, PW1124G-
JM, PW1127G1-JM, PW1127GA-JM, PW1127G-JM, PW1129G-JM, PW1130G-JM, 
PW1133GA-JM, and PW1133G-JM model turbofan engines.

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. 
PW determined that the failure of the V2533-A5 model turbofan engine 
was due to an undetected subsurface material defect in an HPT disk that 
may affect the life of the part. Based on the follow-on analysis 
performed since that event, PW has identified a different population of 
affected HPT 1st-stage and HPT 2nd-stage disks installed on IAE 
PW1122G-JM, PW1124G1-JM, PW1124G-JM, PW1127G1-JM, PW1127GA-JM, PW1127G-
JM, PW1129G-JM, PW1130G-JM, PW1133GA-JM, and PW1133G-JM model turbofan 
engines that are affected by the same unsafe condition as contained in 
AD 2020-07-51 and require removal from service. These HPT disks have 
the highest risk of failure and require removal within 30 days after 
the effective date of this AD 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 ``Docket No. FAA-2021-0780 and Project Identifier 
AD-2021-00916-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 Mark 
Taylor, 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.

Costs of Compliance

    The FAA estimates that this AD affects 3 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   94 work-hours x $85 per         $171,430        $179,420        $538,260
 disk.                                   hour = $7,990.
----------------------------------------------------------------------------------------------------------------

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

[[Page 50612]]

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:

2021-19-10 International Aero Engines, LLC: Amendment 39-21728; 
Docket No. FAA-2021-0780; Project Identifier AD-2021-00916-E.

(a) Effective Date

    This airworthiness directive (AD) is effective September 27, 
2021.

(b) Affected ADs

    None.

(c) Applicability

    This AD applies to International Aero Engines, LLC (IAE) 
PW1122G-JM, PW1124G1-JM, PW1124G-JM, PW1127G1-JM, PW1127GA-JM, 
PW1127G-JM, PW1129G-JM, PW1130G-JM, PW1133GA-JM, and PW1133G-JM 
model turbofan engines with an installed:
    (1) High-pressure turbine (HPT) 1st-stage disk, part number (P/
N) 30G6201 or 30G7301, with a serial number (S/N) listed in Figure 1 
to paragraph (c) of this AD; or
    (2) HPT 2nd-stage disk, P/N 30G5502 or 30G6602, with an S/N 
listed in Figure 2 to paragraph (c) of this AD.

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(d) Subject

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

(e) Unsafe Condition

    This AD was prompted by an analysis performed by Pratt & Whitney 
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, release of 
high-energy debris, 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 30G6201 or 30G7301, with an S/N listed in Figure 1 to paragraph 
(c) of this AD, within 30 days after the effective days of the AD, 
remove the HPT 1st-stage disk from service.
    (2) For IAE model turbofan engines with an HPT 2nd-stage disk, 
P/N 30G5502 or 30G6602, with an S/N listed in Figure 2 to paragraph 
(c) of this AD, within 30 days after the effective days of the AD, 
remove the HPT 2nd-stage disk from service.

(h) Alternative Methods of Compliance (AMOCs)

    (1) The Manager, ECO Branch, FAA, has the authority to approve 
AMOCs for this AD, if requested using the procedures found in 14 CFR 
39.19. In accordance with 14 CFR 39.19, send your request to your 
principal inspector or local Flight Standards District Office, as 
appropriate. If sending information directly to the manager of the 
certification office, send it to the attention of the person 
identified in paragraph (i) of this AD. Information may be emailed 
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.

(i) Related Information

    For more information about this AD, contact Mark Taylor, 
Aviation Safety Engineer, ECO Branch, FAA, 1200 District Avenue, 
Burlington, MA 01803; phone: (781) 238-7229; fax: (781) 238-7199; 
email: [email protected].

(j) Material Incorporated by Reference

    None.

    Issued on September 7, 2021.
Lance T. Gant,
Director, Compliance & Airworthiness Division, Aircraft Certification 
Service.
[FR Doc. 2021-19600 Filed 9-8-21; 11:15 am]
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