Airworthiness Directives; Rolls-Royce Deutschland Ltd & Co Engines, 80582-80584 [2023-25517]

Download as PDF 80582 Federal Register / Vol. 88, No. 222 / Monday, November 20, 2023 / Rules and Regulations inspection program, as applicable, to incorporate the information specified in MHI RJ Temporary Revision 2A–77, dated May 8, 2023, for certification maintenance requirements task number C36–12–133–01. The initial compliance time for doing the task is within 48 months or 6,600 flight hours, whichever occurs first after the effective date of this AD. (i) No Alternative Actions or Intervals After the existing maintenance or inspection program has been revised as required by paragraph (h) of this AD, no alternative actions (e.g., inspections) or intervals may be used unless the actions and intervals are approved as an alternative method of compliance (AMOC) in accordance with the procedures specified in paragraph (k)(1) of this AD. (j) Credit for Previous Actions (1) This paragraph provides credit for actions required by paragraph (g) of this AD, if those actions were performed before the effective date of this AD using MHI RJ Service Bulletin 601R–54–006, dated September 13, 2022. (2) This paragraph provides credit for actions required by paragraph (h) of this AD, if those actions were performed before the effective date of this AD using MHI RJ Temporary Revision 2A–76, dated September 29, 2022. ddrumheller on DSK120RN23PROD with RULES1 (k) Additional AD Provisions The following provisions also apply to this AD: (1) Alternative Methods of Compliance (AMOCs): The Manager, 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 responsible Flight Standards Office, as appropriate. If sending information directly to the manager, International Validation Branch, mail it to the address identified in paragraph (l)(2) of this AD or email to: 9AVS-AIR-730-AMOC@faa.gov. Before using any approved AMOC, notify your appropriate principal inspector, or lacking a principal inspector, the manager of the responsible Flight Standards 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, International Validation Branch, FAA; or Transport Canada or MHI RJ Aviation ULC’s Transport Canada DAO. If approved by the DAO, the approval must include the DAO-authorized signature. (l) Additional Information (1) Refer to Transport Canada AD CF– 2023–19, dated March 13, 2023, for related information. This Transport Canada AD may be found in the AD docket at regulations.gov under Docket No. FAA–2023–1404. (2) For more information about this AD, contact Fatin Saumik, Aviation Safety Engineer, FAA, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590; telephone 516– 228–7300; email 9-avs-nyaco-cos@faa.gov. VerDate Sep<11>2014 16:15 Nov 17, 2023 Jkt 262001 (m) Material Incorporated by Reference (1) The Director of the Federal Register approved the incorporation by reference 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) MHI RJ Service Bulletin 601R–54–006, Revision A, dated May 24, 2023. (ii) MHI RJ Temporary Revision 2A–77, dated May 8, 2023. (3) For service information identified in this AD, contact MHI RJ Aviation Group, Customer Response Center, 3655 Ave. des Grandes-Tourelles, Suite 110, Boisbriand, Que´bec J7H 0E2 Canada; North America tollfree telephone 833–990–7272 or direct-dial telephone 450–990–7272; email: thd.crj@ mhirj.com; website: mhirj.com. (4) You may view this service information at the FAA, Airworthiness Products Section, Operational Safety Branch, 2200 South 216th Street, Des Moines, WA. For information on the availability of this material at the FAA, call 206–231–3195. (5) You may view this material at the National Archives and Records Administration (NARA). For information on the availability of this material at NARA, visit www.archives.gov/federal-register/cfr/ ibr-locations or email fr.inspection@nara.gov. with part number (P/N) UL37606, UL37607, UL37608, UL37722, or UL37790, installed. This AD was prompted by an updated analysis by the engine manufacturer, which indicates certain part-numbered and serialnumbered LPT stage 1 disks that have undergone rework could fail before the current published life limits. This AD retains the requirement to replace the LPT stage 1 disk and includes additional LPT stage 1 disks, as specified in a European Union Aviation Safety Agency (EASA) AD, which is incorporated by reference. The FAA is issuing this AD to address the unsafe condition on these products. DATES: This AD is effective December 26, 2023. The Director of the Federal Register approved the incorporation by reference of a certain publication listed in this AD as of December 26, 2023. ADDRESSES: AD Docket: You may examine the AD docket at regulations.gov under Docket No. FAA–2023–1399; 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, the mandatory Issued on October 20, 2023. continuing airworthiness information Ross Landes, (MCAI), any comments received, and Deputy Director for Regulatory Operations, other information. The address for Compliance & Airworthiness Division, Docket Operations is U.S. Department of Aircraft Certification Service. Transportation, Docket Operations, M– [FR Doc. 2023–25494 Filed 11–17–23; 8:45 am] 30, West Building Ground Floor, Room BILLING CODE 4910–13–P W12–140, 1200 New Jersey Avenue SE, Washington, DC 20590. Material Incorporated by Reference: DEPARTMENT OF TRANSPORTATION • For service information identified in this final rule, contact EASA, KonradFederal Aviation Administration Adenauer-Ufer 3, 50668 Cologne, Germany; phone: +49 221 8999 000; 14 CFR Part 39 email: ADs@easa.europa.eu; website: [Docket No. FAA–2023–1399; Project easa.europa.eu. You may find this Identifier MCAI–2022–01533–E; Amendment material on the EASA website at 39–22585; AD 2023–22–01] ad.easa.europa.eu. RIN 2120–AA64 • You may view this service information at the FAA, Airworthiness Airworthiness Directives; Rolls-Royce Products Section, Operational Safety Deutschland Ltd & Co Engines Branch, 1200 District Avenue, Burlington, MA 01803. For information AGENCY: Federal Aviation on the availability of this material at the Administration (FAA), DOT. FAA, call (817) 222–5110. It is also ACTION: Final rule. available at regulations.gov under Docket No. FAA–2023–1399. SUMMARY: The FAA is superseding Airworthiness Directive (AD) 2020–15– FOR FURTHER INFORMATION CONTACT: 07 for certain Rolls-Royce Deutschland Sungmo Cho, Aviation Safety Engineer, Ltd & Co KG (RRD) (type certificate FAA, 2200 South 216th Street, Des previously held by Rolls-Royce plc) Moines, WA 98198; phone: (781) 238– Model RB211–524G2–19, RB211– 7241; email: Sungmo.D.Cho@faa.gov. 524G2–T–19, RB211–524G3–19, RB211– SUPPLEMENTARY INFORMATION: 524G3–T–19, RB211–524H2–19, Background RB211–524H2–T–19, RB211–524H–36, and RB211–524H–T–36 engines. AD The FAA issued a notice of proposed 2020–15–07 required replacement of the rulemaking (NPRM) to amend 14 CFR low-pressure turbine (LPT) stage 1 disk part 39 to supersede AD 2020–15–07, PO 00000 Frm 00030 Fmt 4700 Sfmt 4700 E:\FR\FM\20NOR1.SGM 20NOR1 80583 Federal Register / Vol. 88, No. 222 / Monday, November 20, 2023 / Rules and Regulations Amendment 39–21170 (85 FR 43682, July 20, 2020) (AD 2020–15–07). AD 2020–15–07 applied to RRD RB211– 524G2–19, RB211–524G2–T–19, RB211– 524G3–19, RB211–524G3–T–19, RB211– 524H2–19, RB211–524H2–T–19, RB211–524H–36, and RB211–524H–T– 36 model turbofan engines with LPT stage 1 disks, P/N UL37606, UL37607, UL37608, UL37722, or UL37790, installed. AD 2020–15–07 required replacement of the LPT stage 1 disk before it reaches its new Declared Safe Cycle Limit (DSCL) or within 25 flight cycles after the effective date of the AD, whichever occurs later. The FAA issued AD 2020–15–07 to prevent failure of the LPT stage 1 disk. The NPRM published in the Federal Register on July 12, 2023 (88 FR 44235). The NPRM was prompted by AD 2022– 0237, dated December 2, 2022 (EASA AD 2022–0237) (also referred to as the MCAI), issued by EASA, which is the Technical Agent for the Member States of the European Union. The MCAI states that further investigation by the manufacturer identified additional partnumbered LPT stage 1 disks affected by the unsafe condition. As a result of this finding, RRD published revised service information, which includes the additional affected LPT stage 1 disk P/ Ns. You may examine the MCAI in the AD docket at regulations.gov under Docket No. FAA–2023–1399. In the NPRM, the FAA proposed to include additional LPT stage 1 disks and require accomplishing the actions specified in the MCAI described previously, except for any differences identified as exceptions in the regulatory text of the NPRM. The FAA is issuing this AD to prevent failure of the LPT stage 1 disk, which if not addressed, could result in uncontained release of high-energy debris from the engine, in-flight shutdown of the engine, damage to the engine, and damage to the airplane. Discussion of Final Airworthiness Directive Comments The FAA received a comment from the Air Line Pilots Association, International (ALPA) and The Boeing Company who supported the NPRM without change. Conclusion These products have been approved by the aviation authority of another country and are approved for operation in the United States. Pursuant to the FAA’s bilateral agreement with this State of Design Authority, it has notified the FAA of the unsafe condition described in the MCAI referenced above. The FAA reviewed the relevant data and determined that air safety requires adopting this AD as proposed. Accordingly, the FAA is issuing this AD to address the unsafe condition on these products. Except for minor editorial changes, this AD is adopted as proposed in the NPRM. Related Service Information Under 1 CFR Part 51 The FAA reviewed EASA AD 2022– 0237, which specifies procedures for replacement of the LPT stage 1 disk and reducing the DSCL for LPT stage 1 disks. This material is reasonably available because the interested parties have access to it through their normal course of business or by the means identified in ADDRESSES. Costs of Compliance The FAA estimates that this AD affects 18 engines installed on airplanes of U.S. registry. The FAA estimates the following costs to comply with this AD: ddrumheller on DSK120RN23PROD with RULES1 ESTIMATED COSTS Action Labor cost Parts cost Cost per product Cost on U.S. operators Remove and replace LPT stage 1 disk .......... 120 work-hours × $85 per hour = $10,200 .... $30,000 $40,200 $723,600 Authority for This Rulemaking Regulatory Findings The Amendment 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. The FAA has determined that 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. Accordingly, under the authority delegated to me by the Administrator, the FAA amends 14 CFR part 39 as follows: VerDate Sep<11>2014 16:15 Nov 17, 2023 Jkt 262001 List of Subjects in 14 CFR Part 39 Air transportation, Aircraft, Aviation safety, Incorporation by reference, Safety. PO 00000 Frm 00031 Fmt 4700 Sfmt 4700 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: a. Removing Airworthiness Directive 2020–15–07, Amendment 39–21170 (85 FR 43682, July 20, 2020); and ■ b. Adding the following new airworthiness directive: ■ ■ 2023–22–01 Rolls-Royce Deutschland Ltd. & Co. KG: Amendment 39–22585; Docket No. FAA–2023–1399; Project Identifier MCAI–2022–01533–E. E:\FR\FM\20NOR1.SGM 20NOR1 80584 Federal Register / Vol. 88, No. 222 / Monday, November 20, 2023 / Rules and Regulations (a) Effective Date This airworthiness directive (AD) is effective December 26, 2023. (b) Affected ADs This AD replaces AD 2020–15–07, Amendment 39–21170 (85 FR 43682, July 20, 2020). (c) Applicability This AD applies to Rolls-Royce Deutschland Ltd & Co. KG (RRD) Model RB211–524G2–19, RB211–524G2–T–19, RB211–524G3–19, RB211–524G3–T–19, RB211–524H2–19, RB211–524H2–T–19, RB211–524H–36, and RB211–524H–T–36 engines. (d) Subject Joint Aircraft System Component (JASC) Code 7250, Turbine Section. (e) Unsafe Condition This AD was prompted by an updated analysis by the engine manufacturer, which indicates certain part-numbered and serialnumbered low-pressure turbine (LPT) stage 1 disks that have undergone rework could fail before the current published life limits. The FAA is issuing this AD to prevent failure of the LPT stage 1 disk. The unsafe condition, if not addressed, could result in uncontained release of high-energy debris from the engine, in-flight shutdown of the engine, 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 Except as specified in paragraph (h) of this AD: Perform all required actions within the compliance times specified in, and in accordance with, European Union Aviation Safety Agency (EASA) AD 2022–0237, dated December 2, 2022 (EASA AD 2022–0237). (1) Where EASA AD 2022–0237 refers to its effective date, this AD requires using the effective date of this AD. (2) This AD does not adopt the ‘‘Remarks’’ section of EASA AD 2022–0237. ddrumheller on DSK120RN23PROD with RULES1 (i) Alternative Methods of Compliance (AMOCs) Jkt 262001 Issued on October 25, 2023. Caitlin Locke, Director, Compliance & Airworthiness Division, Aircraft Certification Service. [FR Doc. 2023–25517 Filed 11–17–23; 8:45 am] BILLING CODE 4910–13–P who control a supported organization and on certain other requirements for Type III supporting organizations. The regulations reflect changes to the law made by the Pension Protection Act of 2006. DATES: This correction is effective on November 20, 2023. FOR FURTHER INFORMATION CONTACT: Michael Gruccio at (202) 317–4541 (not a toll-free number), or Don Spellman at (202) 317–4086 (not a toll-free number). SUPPLEMENTARY INFORMATION: Background The final regulations (TD 9981) that are the subject of this correction are under section 509(a) of the Code. Corrections to Publication Accordingly, the final regulations (TD 9981) that are the subject of FR Doc. 2023–22286, published on October 16, 2023, are corrected on page 71298, in the first column, the sixth through eighth lines under the heading ‘‘Statement of Availability of IRS Documents’’ are corrected to read ‘‘visiting the IRS website at: https:// www.irs.gov/irb/2014-02_IRB#NOT2014-4’’. Oluwafunmilayo A. Taylor, Section Chief, Publications & Regulations Branch, Associate Chief Counsel (Procedure and Administration). [FR Doc. 2023–25510 Filed 11–17–23; 8:45 am] BILLING CODE 4830–01–P DEPARTMENT OF THE TREASURY 31 CFR Part 35 RIN 1505–AC83 Internal Revenue Service ACTION: [TD 9981] Internal Revenue Service (IRS), Treasury. ACTION: Final regulations; correction. AGENCY: This document contains a correction to Treasury Decision 9981, which was published in the Federal Register for Monday, October 16, 2023. Treasury Decision 9981 issued final regulations providing guidance on the prohibition on certain gifts or contributions to Type I and Type III supporting organizations from persons SUMMARY: Frm 00032 Department of the Treasury. Interim final rule. The Secretary of the Treasury is issuing an interim final rule to amend the definition of ‘‘obligation’’ set forth in the Department’s regulations with respect to the Coronavirus State Fiscal Recovery Fund and the Coronavirus Local Fiscal Recovery Fund established under the American Rescue Plan Act of 2021. DATES: Effective date: The provisions in this interim final rule are effective November 20, 2023. Comment date: Comments must be received on or before December 20, 2023. ADDRESSES: Please submit comments electronically through the Federal SUMMARY: Requirements for Type I and Type III Supporting Organizations; Correction PO 00000 Coronavirus State and Local Fiscal Recovery Funds AGENCY: 26 CFR Parts 1 and 53 RIN 1545–BJ23 (1) The Manager, AIR–520, Continued Operational Safety Branch, FAA, has the authority to approve AMOCs for this AD, if requested using the procedures found in 14 CFR 39.19. In accordance with 14 CFR 39.19, send your request to your principal inspector or local Flight Standards District Office, as appropriate. If sending information directly to the manager of the certification office, send it to the attention of the person identified in paragraph (j) of this AD and email 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. 16:52 Nov 17, 2023 (k) Material Incorporated by Reference (1) The Director of the Federal Register approved the incorporation by reference 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 the AD specifies otherwise. (i) European Union Aviation Safety Agency (EASA) AD 2022–0237, dated December 2, 2022. (ii) [Reserved] (3) For EASA AD 2022–0237, contact EASA, Konrad-Adenauer-Ufer 3, 50668 Cologne, Germany; phone: +49 221 8999 000; email: ADs@easa.europa.eu; website:easa.europa.eu. You may find this EASA AD on the EASA website at ad.easa.europa.eu. (4) You may view this service information at 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 (817) 222–5110. (5) You may view this material at the National Archives and Records Administration (NARA). For information on the availability of this material at NARA, visit www.archives.gov/federal-register/cfr/ ibr-locations or email fr.inspection@nara.gov. DEPARTMENT OF THE TREASURY (h) Exceptions to EASA AD 2022–0237 VerDate Sep<11>2014 (j) Additional Information For more information about this AD, contact Sungmo Cho, Aviation Safety Engineer, FAA, 2200 South 216th Street, Des Moines, WA 98198; phone: (781) 238–7241; email: Sungmo.D.Cho@faa.gov. Fmt 4700 Sfmt 4700 E:\FR\FM\20NOR1.SGM 20NOR1

Agencies

[Federal Register Volume 88, Number 222 (Monday, November 20, 2023)]
[Rules and Regulations]
[Pages 80582-80584]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2023-25517]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2023-1399; Project Identifier MCAI-2022-01533-E; 
Amendment 39-22585; AD 2023-22-01]
RIN 2120-AA64


Airworthiness Directives; Rolls-Royce Deutschland Ltd & Co 
Engines

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Final rule.

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

SUMMARY: The FAA is superseding Airworthiness Directive (AD) 2020-15-07 
for certain Rolls-Royce Deutschland Ltd & Co KG (RRD) (type certificate 
previously held by Rolls-Royce plc) Model RB211-524G2-19, RB211-524G2-
T-19, RB211-524G3-19, RB211-524G3-T-19, RB211-524H2-19, RB211-524H2-T-
19, RB211-524H-36, and RB211-524H-T-36 engines. AD 2020-15-07 required 
replacement of the low-pressure turbine (LPT) stage 1 disk with part 
number (P/N) UL37606, UL37607, UL37608, UL37722, or UL37790, installed. 
This AD was prompted by an updated analysis by the engine manufacturer, 
which indicates certain part-numbered and serial-numbered LPT stage 1 
disks that have undergone rework could fail before the current 
published life limits. This AD retains the requirement to replace the 
LPT stage 1 disk and includes additional LPT stage 1 disks, as 
specified in a European Union Aviation Safety Agency (EASA) AD, which 
is incorporated by reference. The FAA is issuing this AD to address the 
unsafe condition on these products.

DATES: This AD is effective December 26, 2023.
    The Director of the Federal Register approved the incorporation by 
reference of a certain publication listed in this AD as of December 26, 
2023.

ADDRESSES: 
    AD Docket: You may examine the AD docket at regulations.gov under 
Docket No. FAA-2023-1399; 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, the mandatory continuing airworthiness 
information (MCAI), 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.
    Material Incorporated by Reference:
     For service information identified in this final rule, 
contact EASA, Konrad-Adenauer-Ufer 3, 50668 Cologne, Germany; phone: 
+49 221 8999 000; email: [email protected]; website: easa.europa.eu. 
You may find this material on the EASA website at ad.easa.europa.eu.
     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 (817) 222-5110. It is 
also available at regulations.gov under Docket No. FAA-2023-1399.

FOR FURTHER INFORMATION CONTACT: Sungmo Cho, Aviation Safety Engineer, 
FAA, 2200 South 216th Street, Des Moines, WA 98198; phone: (781) 238-
7241; email: [email protected].

SUPPLEMENTARY INFORMATION: 

Background

    The FAA issued a notice of proposed rulemaking (NPRM) to amend 14 
CFR part 39 to supersede AD 2020-15-07,

[[Page 80583]]

Amendment 39-21170 (85 FR 43682, July 20, 2020) (AD 2020-15-07). AD 
2020-15-07 applied to RRD RB211-524G2-19, RB211-524G2-T-19, RB211-
524G3-19, RB211-524G3-T-19, RB211-524H2-19, RB211-524H2-T-19, RB211-
524H-36, and RB211-524H-T-36 model turbofan engines with LPT stage 1 
disks, P/N UL37606, UL37607, UL37608, UL37722, or UL37790, installed. 
AD 2020-15-07 required replacement of the LPT stage 1 disk before it 
reaches its new Declared Safe Cycle Limit (DSCL) or within 25 flight 
cycles after the effective date of the AD, whichever occurs later. The 
FAA issued AD 2020-15-07 to prevent failure of the LPT stage 1 disk.
    The NPRM published in the Federal Register on July 12, 2023 (88 FR 
44235). The NPRM was prompted by AD 2022-0237, dated December 2, 2022 
(EASA AD 2022-0237) (also referred to as the MCAI), issued by EASA, 
which is the Technical Agent for the Member States of the European 
Union. The MCAI states that further investigation by the manufacturer 
identified additional part-numbered LPT stage 1 disks affected by the 
unsafe condition. As a result of this finding, RRD published revised 
service information, which includes the additional affected LPT stage 1 
disk P/Ns.
    You may examine the MCAI in the AD docket at regulations.gov under 
Docket No. FAA-2023-1399.
    In the NPRM, the FAA proposed to include additional LPT stage 1 
disks and require accomplishing the actions specified in the MCAI 
described previously, except for any differences identified as 
exceptions in the regulatory text of the NPRM. The FAA is issuing this 
AD to prevent failure of the LPT stage 1 disk, which if not addressed, 
could result in uncontained release of high-energy debris from the 
engine, in-flight shutdown of the engine, damage to the engine, and 
damage to the airplane.

Discussion of Final Airworthiness Directive

Comments

    The FAA received a comment from the Air Line Pilots Association, 
International (ALPA) and The Boeing Company who supported the NPRM 
without change.

Conclusion

    These products have been approved by the aviation authority of 
another country and are approved for operation in the United States. 
Pursuant to the FAA's bilateral agreement with this State of Design 
Authority, it has notified the FAA of the unsafe condition described in 
the MCAI referenced above. The FAA reviewed the relevant data and 
determined that air safety requires adopting this AD as proposed. 
Accordingly, the FAA is issuing this AD to address the unsafe condition 
on these products. Except for minor editorial changes, this AD is 
adopted as proposed in the NPRM.

Related Service Information Under 1 CFR Part 51

    The FAA reviewed EASA AD 2022-0237, which specifies procedures for 
replacement of the LPT stage 1 disk and reducing the DSCL for LPT stage 
1 disks.
    This material is reasonably available because the interested 
parties have access to it through their normal course of business or by 
the means identified in ADDRESSES.

Costs of Compliance

    The FAA estimates that this AD affects 18 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 and replace LPT stage 1 disk.  120 work-hours x $85            $30,000          $40,200         $723,600
                                       per hour = $10,200.
----------------------------------------------------------------------------------------------------------------

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

    The FAA has determined that 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.

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:
0
a. Removing Airworthiness Directive 2020-15-07, Amendment 39-21170 (85 
FR 43682, July 20, 2020); and
0
b. Adding the following new airworthiness directive:

2023-22-01 Rolls-Royce Deutschland Ltd. & Co. KG: Amendment 39-
22585; Docket No. FAA-2023-1399; Project Identifier MCAI-2022-01533-
E.

[[Page 80584]]

(a) Effective Date

    This airworthiness directive (AD) is effective December 26, 
2023.

(b) Affected ADs

    This AD replaces AD 2020-15-07, Amendment 39-21170 (85 FR 43682, 
July 20, 2020).

(c) Applicability

    This AD applies to Rolls-Royce Deutschland Ltd & Co. KG (RRD) 
Model RB211-524G2-19, RB211-524G2-T-19, RB211-524G3-19, RB211-524G3-
T-19, RB211-524H2-19, RB211-524H2-T-19, RB211-524H-36, and RB211-
524H-T-36 engines.

(d) Subject

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

(e) Unsafe Condition

    This AD was prompted by an updated analysis by the engine 
manufacturer, which indicates certain part-numbered and serial-
numbered low-pressure turbine (LPT) stage 1 disks that have 
undergone rework could fail before the current published life 
limits. The FAA is issuing this AD to prevent failure of the LPT 
stage 1 disk. The unsafe condition, if not addressed, could result 
in uncontained release of high-energy debris from the engine, in-
flight shutdown of the engine, 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

    Except as specified in paragraph (h) of this AD: Perform all 
required actions within the compliance times specified in, and in 
accordance with, European Union Aviation Safety Agency (EASA) AD 
2022-0237, dated December 2, 2022 (EASA AD 2022-0237).

(h) Exceptions to EASA AD 2022-0237

    (1) Where EASA AD 2022-0237 refers to its effective date, this 
AD requires using the effective date of this AD.
    (2) This AD does not adopt the ``Remarks'' section of EASA AD 
2022-0237.

(i) Alternative Methods of Compliance (AMOCs)

    (1) The Manager, AIR-520, Continued Operational Safety Branch, 
FAA, has the authority to approve AMOCs for this AD, if requested 
using the procedures found in 14 CFR 39.19. In accordance with 14 
CFR 39.19, send your request to your principal inspector or local 
Flight Standards District Office, as appropriate. If sending 
information directly to the manager of the certification office, 
send it to the attention of the person identified in paragraph (j) 
of this AD and email 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) Additional Information

    For more information about this AD, contact Sungmo Cho, Aviation 
Safety Engineer, FAA, 2200 South 216th Street, Des Moines, WA 98198; 
phone: (781) 238-7241; email: [email protected].

(k) Material Incorporated by Reference

    (1) The Director of the Federal Register approved the 
incorporation by reference 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 the AD specifies otherwise.
    (i) European Union Aviation Safety Agency (EASA) AD 2022-0237, 
dated December 2, 2022.
    (ii) [Reserved]
    (3) For EASA AD 2022-0237, contact EASA, Konrad-Adenauer-Ufer 3, 
50668 Cologne, Germany; phone: +49 221 8999 000; email: 
[email protected]; website:easa.europa.eu. You may find this EASA 
AD on the EASA website at ad.easa.europa.eu.
    (4) You may view this service information at 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 (817) 222-5110.
    (5) You may view this material at the National Archives and 
Records Administration (NARA). For information on the availability 
of this material at NARA, visit www.archives.gov/federal-register/cfr/ibr-locations or email [email protected].

    Issued on October 25, 2023.
Caitlin Locke,
Director, Compliance & Airworthiness Division, Aircraft Certification 
Service.
[FR Doc. 2023-25517 Filed 11-17-23; 8:45 am]
BILLING CODE 4910-13-P
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