Airworthiness Directives; General Electric Company Engines, 41304-41306 [2024-10093]

Download as PDF lotter on DSK11XQN23PROD with RULES1 41304 Federal Register / Vol. 89, No. 93 / Monday, May 13, 2024 / Rules and Regulations Note 1 to paragraph (l)(2)(i): For obtaining the task for Bombardier Global 5000 AMM, Part Two, Publication No. BD–700 AMM, use Document Identification No. GL 5000 AMM. (ii) Task 52–11–00–720–801, ‘‘Functional Test of the Passenger Door Mechanism,’’ Subject 52–11–00, ‘‘Passenger Door,’’ Chapter 52, ‘‘Doors,’’ of Bombardier Global 5000 Featuring Global Vision Flight Deck AMM, Part Two, Publication No. GL 5000 GVFD AMM, Revision 45, dated March 30, 2023. (iii) Task 52–11–00–720–801, ‘‘Functional Test of the Passenger Door Mechanism,’’ Subject 52–11–00, ‘‘Passenger Door,’’ Chapter 52, ‘‘Doors,’’ of Bombardier Global 5500 AMM, Part Two, Publication No. GL 5500 AMM, Revision 14, dated March 30, 2023. (iv) Task 52–11–00–720–801, ‘‘Functional Test of the Passenger Door Mechanism,’’ Subject 52–11–00, ‘‘Passenger Door,’’ Chapter 52, ‘‘Doors,’’ of Bombardier Global 6000 AMM, Part Two, Publication No. GL 6000 AMM, Revision 46, dated March 30, 2023. (v) Task 52–11–00–720–801, ‘‘Functional Test of the Passenger Door Mechanism,’’ Subject 52–11–00, ‘‘Passenger Door,’’ Chapter 52, ‘‘Doors,’’ of Bombardier Global 6500 AMM, Part Two, Publication No. GL 6500 AMM, Revision 15, dated March 30, 2023. (vi) Task 52–11–00–720–801, ‘‘Functional Test of the Passenger Door Mechanism,’’ Subject 52–11–00, ‘‘Passenger Door,’’ Chapter 52, ‘‘Doors,’’ of Bombardier Global Express AMM, Part Two, Publication No. BD–700 AMM, Revision 97, dated March 30, 2023. Note 2 to paragraph (l)(2)(i): For obtaining the task for Bombardier Global Express AMM, Part Two, Publication No. BD–700 AMM, use Document Identification No. GL 700 AMM. (vii) Task 52–11–00–720–801, ‘‘Functional Test of the Passenger Door Mechanism,’’ Subject 52–11–00, ‘‘Passenger Door,’’ Chapter 52, ‘‘Doors,’’ of Bombardier Global Express XRS AMM, Part Two, Publication No. BD– 700 XRS AMM, Revision 75, dated March 30, 2023. Note 3 to paragraph (l)(2)(vii): For obtaining the task for Bombardier Global Express XRS AMM, Part Two, Publication No. BD–700 XRS AMM, use Document Identification No. GL XRS AMM. (3) For Bombardier service information, contact Bombardier Business Aircraft Customer Response Center, 400 Coˆte-Vertu Road West, Dorval, Que´bec H4S 1Y9, Canada; telephone 514–855–2999; email ac.yul@aero.bombardier.com; website bombardier.com. (4) You may view this material at the FAA, Airworthiness Products Section, Operational Safety Branch, 2200 South 216th St., Des Moines, WA. For information on the availability of this material at the FAA, call 206–231–3195. (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. VerDate Sep<11>2014 21:11 May 10, 2024 Jkt 262001 Issued on April 26, 2024. James D. Foltz, Deputy Director, Compliance & Airworthiness Division, Aircraft Certification Service. [FR Doc. 2024–09546 Filed 5–10–24; 8:45 am] BILLING CODE 4910–13–P DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA–2024–0771; Project Identifier AD–2023–01251–E; Amendment 39–22720; AD 2024–06–15] RIN 2120–AA64 Airworthiness Directives; General Electric Company Engines Federal Aviation Administration (FAA), DOT. ACTION: Final rule; request for comments; correction. AGENCY: The FAA is correcting an airworthiness directive (AD) that published in the Federal Register. That AD applies to certain General Electric Company (GE) Model GE90–110B1 and GE90–115B engines. As published, references to the service information include a typographical error in the regulatory text of the AD. This document corrects that error in all references. In all other respects, the original document remains the same. DATES: This correction is effective May 14, 2024. The effective date of AD 2024– 06–15 remains May 14, 2024. The date for submitting comments remains June 13, 2024. The Director of the Federal Register approved the incorporation by reference of a certain publication listed in this AD as of May 14, 2024 (89 FR 33215, April 29, 2024). ADDRESSES: AD Docket: You may examine the AD docket at regulations.gov under Docket No. FAA–2024–0771, or in person at Docket Operations between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. The AD docket contains this final rule, any comments received, and other information. The address for Docket Operations is U.S. Department of Transportation, Docket Operations, M–30, West Building Ground Floor, Room W12–140, 1200 New Jersey Avenue SE, Washington, DC 20590. Material Incorporated by Reference: • For service information identified in this final rule, contact General Electric Company, 1 Neumann Way, Cincinnati, OH 45215; phone: (513) SUMMARY: PO 00000 Frm 00006 Fmt 4700 Sfmt 4700 552–3272; email: aviation.fleetsupport@ ae.ge.com; website: ge.com. • You may view this service information at the FAA, Airworthiness Products Section, Operational Safety Branch, 1200 District Avenue, Burlington, MA 01803. For information on the availability of this material at the FAA, call (817) 222–5110. It is also available at regulations.gov under Docket No. FAA–2024–0771. FOR FURTHER INFORMATION CONTACT: Alexander Thickstun, Aviation Safety Engineer, FAA, 2200 South 216th Street, Des Moines, WA 98198; phone: (202) 267–8292; email: alexander.m.thickstun@faa.gov. SUPPLEMENTARY INFORMATION: 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 ‘‘FAA–2024–0771; Project Identifier AD–2023–01251–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 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 Alexander Thickstun, Aviation Safety Engineer, FAA, 2200 E:\FR\FM\13MYR1.SGM 13MYR1 Federal Register / Vol. 89, No. 93 / Monday, May 13, 2024 / Rules and Regulations South 216th Street, Des Moines, WA 98198. Any commentary that the FAA receives which is not specifically designated as CBI will be placed in the public docket for this rulemaking. Background AD 2024–06–15, Amendment 39– 22720 (89 FR 33215, April 29, 2024), requires repetitive ultrasonic inspections (USIs) of the interstage highpressure turbine (HPT) rotor seal for cracks and removal from service if necessary. As a mandatory terminating action to the repetitive USIs of the interstage HPT rotor seal, this AD requires replacement of the interstage HPT rotor seal. Need for Correction As published, paragraphs (c), (g)(1), (g)(1)(i) and (ii), and (g)(2) in the regulatory text of AD 2024–06–15 are incorrect. These paragraphs refer to the service information as ‘‘GE GE90–100 Service Bulletin (SB) 72–A0908 R00, dated July 7, 2023’’ and ‘‘GE SB 72– A0908.’’ The correct service information is ‘‘GE GE90–100 Service Bulletin (SB) 72–0908 R00, dated July 7, 2023’’ and ‘‘GE SB 72–0908.’’ Related Service Information Under 1 CFR Part 51 The FAA reviewed GE GE90–100 Service Bulletin (SB) 72–0908 R00, dated July 7, 2023, which specifies procedures for performing a USI of the interstage HPT rotor seal. This service information is reasonably available because the interested parties have access to it through their normal course of business or by the means identified in ADDRESSES. lotter on DSK11XQN23PROD with RULES1 Correction of Publication This document corrects an error and correctly adds the AD as an amendment to 14 CFR 39.13. Although no other part of the preamble or regulatory information has been corrected, the FAA is publishing the entire rule in the Federal Register. The effective date of this AD remains May 14, 2024. Since this action only corrects a typographical error in the references to the service information, it has no adverse economic impact and imposes no additional burden on any person. Therefore, the FAA has determined that prior notice and public comment procedures are unnecessary. List of Subjects in 14 CFR Part 39 Air transportation, Aircraft, Aviation safety, Incorporation by reference, Safety. VerDate Sep<11>2014 21:11 May 10, 2024 Jkt 262001 Adoption of the Amendment Accordingly, pursuant to the authority delegated to me by the Administrator, the Federal Aviation Administration amends part 39 of the Federal Aviation Regulations (14 CFR part 39) as follows: PART 39—AIRWORTHINESS DIRECTIVES 1. The authority citation for part 39 continues to read as follows: ■ Authority: 49 U.S.C. 106(g), 40113, 44701. § 39.13 [Corrected] 2. The FAA amends § 39.13 by adding the following airworthiness directive: ■ 2024–06–15 General Electric Company: Amendment 39–22720; Docket No. FAA–2024–0771; Project Identifier AD– 2023–01251–E. (a) Effective Date This airworthiness directive (AD) is effective May 14, 2024. (b) Affected ADs None. (c) Applicability This AD applies to General Electric Company (GE) Model GE90–110B1 and GE90–115B engines with an installed interstage high-pressure turbine (HPT) rotor seal having a part number and serial number listed in Table 1 or Table 2 of GE GE90–100 Service Bulletin (SB) 72–0908 R00, dated July 7, 2023 (GE SB 72–0908). (d) Subject Joint Aircraft System Component (JASC) Code 7250, Turbine Section. (e) Unsafe Condition This AD was prompted by a report of an aborted takeoff due to left engine failure caused by liberation of the interstage HPT rotor seal rim. The FAA is issuing this AD to prevent failure of the HPT. The unsafe condition, if not addressed, could result in uncontained HPT failure, release of highenergy debris, damage to the engine, damage to the airplane, and possible loss of the airplane. (f) Compliance Comply with this AD within the compliance times specified, unless already done. (g) Required Actions (1) Perform an ultrasonic inspection (USI) of the interstage HPT rotor seal in accordance with the Accomplishment Instructions, paragraph 3.B.(2), of GE SB 72–0908, as follows: (i) Perform an initial USI before reaching the part cycles since new limit listed in Table 1 or Table 2, as applicable, of GE SB 72– 0908, or within 10 flight cycles after the effective date of this AD, whichever occurs later; and (ii) Repeat the USI thereafter within every 100 cycles or 175 cycles, as applicable, as PO 00000 Frm 00007 Fmt 4700 Sfmt 4700 41305 listed in Table 1 or Table 2 of GE SB 72– 0908, since the last inspection. (2) If, during any USI required by paragraph (g)(1)(i) or (ii) of this AD, a nonserviceable indication is found, as defined in paragraph 3.B.(2)(b) of GE SB 72–0908, before further flight, remove the interstage HPT rotor seal from service. (h) Mandatory Terminating Action As a terminating action to the repetitive USI required by paragraph (g)(1)(i) or (ii) of this AD, at the next engine shop visit after the effective date of this AD, remove the affected interstage HPT rotor seal from service. (i) Definition For the purpose of this AD, an ‘‘engine shop visit’’ is the induction of an engine into the shop for maintenance involving the separation of pairs of major mating engine case flanges, except separation of engine flanges solely for the purposes of transportation of the engine without subsequent maintenance, which does not constitute an engine shop visit. (j) 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 AIR–520 Continued Operational Safety Branch, send it to the attention of the person identified in paragraph (k) of this AD and email to: ANEAD-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. (k) Additional Information For more information about this AD, contact Alexander Thickstun, Aviation Safety Engineer, FAA, 2200 South 216th Street, Des Moines, WA 98198; phone: (202) 267–8292; email: alexander.m.thickstun@faa.gov. (l) Material Incorporated by Reference (1) The Director of the Federal Register approved the incorporation by reference (IBR) of the service information listed in this paragraph under 5 U.S.C. 552(a) and 1 CFR part 51. (2) You must use this service information as applicable to do the actions required by this AD, unless the AD specifies otherwise. (i) General Electric Company GE90–100 Service Bulletin 72–0908 R00, dated July 7, 2023. (ii) [Reserved] (3) For service information identified in this AD, contact General Electric Company, 1 Newman Way, Cincinnati, OH 45215; phone: (513) 552–3272; email: aviation.fleetsupport@ae.ge.com; website: ge.com. (4) You may view this service information at the FAA, Airworthiness Products Section, E:\FR\FM\13MYR1.SGM 13MYR1 41306 Federal Register / Vol. 89, No. 93 / Monday, May 13, 2024 / Rules and Regulations 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. Issued on May 2, 2024. Victor Wicklund, Deputy Director, Compliance & Airworthiness Division, Aircraft Certification Service. [FR Doc. 2024–10093 Filed 5–6–24; 11:15 am] BILLING CODE 4910–13–P DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 71 [Docket No. FAA–2023–2360; Airspace Docket No. 23–AEA–24] RIN 2120–AA66 Amendment of Class D and Class E Airspace; Huntington, WV Federal Aviation Administration (FAA), DOT. ACTION: Final rule. AGENCY: This action amends Class D airspace and Class E airspace extending upward from 700 feet above the surface for Tri-State/Milton J. Ferguson Field, Huntington, WV, and removes unnecessary verbiage from the descriptor header. DATES: Effective 0901 UTC, September 5, 2024. 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 JO 7400.11 and publication of conforming amendments. ADDRESSES: A copy of the Notice of Proposed Rulemaking (NPRM), all comments received, this final rule, and all background material may be viewed online at www.regulations.gov using the FAA Docket number. Electronic retrieval helps, and guidelines are available on the website. It is available 24 hours a day, 365 days a year. FAA Order JO 7400.11H Airspace Designations and Reporting Points and subsequent amendments can be viewed online at www.faa.gov/air_traffic/ publications/. You may also contact the Rules and Regulations Group, Office of Policy, Federal Aviation Administration, 800 Independence Avenue SW, Washington, DC 20591; telephone: (202) 267–8783. FOR FURTHER INFORMATION CONTACT: Justin T. Rhodes, Operations Support lotter on DSK11XQN23PROD with RULES1 SUMMARY: VerDate Sep<11>2014 21:11 May 10, 2024 Jkt 262001 Group, Eastern Service Center, Federal Aviation Administration, 1701 Columbia Avenue, College Park, GA 30337; Telephone: (404) 305–5478. SUPPLEMENTARY INFORMATION: Authority for This Rulemaking The FAA’s authority to issue rules regarding aviation safety is found in Title 49 of the United States Code. 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 Class D and Class E airspace in Huntington, WV. An airspace evaluation determined that this update is necessary to support IFR operations in the area. History The FAA published a notice of proposed rulemaking for Docket No. FAA–2023–2360 in the Federal Register (88 FR 88854; December 26, 2023), to amend Class D airspace and E airspace extending upward from 700 feet above the surface for Tri-State/Milton J. Ferguson Field, Huntington, WV. Interested parties were invited to participate in this rulemaking effort by submitting written comments on the proposal to the FAA. No comments were received. Incorporation by Reference Class D and Class E airspace designations are published in Paragraphs 5000 and 6005 of FAA Order JO 7400.11, Airspace Designations and Reporting Points, which is incorporated by reference in 14 CFR 71.1 on an annual basis. This document amends the current version of that order, FAA Order JO 7400.11H, dated August 11, 2023, and effective September 15, 2023. FAA Order JO 7400.11H is publicly available as listed in the ADDRESSES section of this document. These amendments will be published in the next update to FAA Order JO 7400.11. FAA Order JO 7400.11H lists Class A, B, C, D, and E airspace areas, air traffic service routes, and reporting points. The Rule This action amends 14 CFR part 71 by amending Class D airspace by adding that airspace extending upward from the surface within 1 mile on each side of the PO 00000 Frm 00008 Fmt 4700 Sfmt 4700 Tri-State/Milton J. Ferguson Field 112° bearing extending from the 4-mile radius to 5.7 miles southeast of the airport and 292° bearing from the airport extending from the 4-mile radius to 5.8 miles northwest of the airport. This action amends Class E airspace extending from 700 feet above the surface by increasing the radius to 8.3 miles (previously 8.2 miles) and adding that airspace within 2 miles on each side of the Tri-State/Milton J. Ferguson Field 112° bearing extending from the 8.3-mile radius to 10.2 miles southeast of the airport. The Tri-State/Milton J. Ferguson Field Class D and Class E airspace is amended, in accordance with the 7400.2, by removing the city name from the descriptor header. Subsequent to publication, the FAA found an error in the NPRM. The geographic coordinates of the airport were listed incorrectly, and the correct coordinates are (Lat 38°22′07″ N, long 82°33′37″ W). This action corrects this error. Regulatory Notices and Analyses The FAA has determined that this regulation only involves an established body of technical regulations for which frequent and routine amendments are necessary to keep them operationally current. It, therefore: (1) is not a ‘‘significant regulatory action’’ under Executive Order 12866; (2) is not a ‘‘significant rule’’ under DOT Regulatory Policies and Procedures (44 FR 11034; February 26, 1979); and (3) does not warrant preparation of a regulatory evaluation as the anticipated impact is minimal. Since this is a routine matter that only affects air traffic procedures and air navigation, it is certified that this rule, when promulgated, does not have a significant economic impact on a substantial number of small entities under the criteria of the Regulatory Flexibility Act. Environmental Review The FAA has determined that this action qualifies for categorical exclusion under the National Environmental Policy Act in accordance with FAA Order 1050.1F, ‘‘Environmental Impacts: Policies and Procedures,’’ paragraph 5–6.5a. This airspace action is not expected to cause any potentially significant environmental impacts, and no extraordinary circumstances exist that warrant the preparation of an environmental assessment. Lists of Subjects in 14 CFR Part 71 Airspace, Incorporation by reference, Navigation (air). E:\FR\FM\13MYR1.SGM 13MYR1

Agencies

[Federal Register Volume 89, Number 93 (Monday, May 13, 2024)]
[Rules and Regulations]
[Pages 41304-41306]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2024-10093]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2024-0771; Project Identifier AD-2023-01251-E; 
Amendment 39-22720; AD 2024-06-15]
RIN 2120-AA64


Airworthiness Directives; General Electric Company Engines

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Final rule; request for comments; correction.

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

SUMMARY: The FAA is correcting an airworthiness directive (AD) that 
published in the Federal Register. That AD applies to certain General 
Electric Company (GE) Model GE90-110B1 and GE90-115B engines. As 
published, references to the service information include a 
typographical error in the regulatory text of the AD. This document 
corrects that error in all references. In all other respects, the 
original document remains the same.

DATES: This correction is effective May 14, 2024. The effective date of 
AD 2024-06-15 remains May 14, 2024. The date for submitting comments 
remains June 13, 2024.
    The Director of the Federal Register approved the incorporation by 
reference of a certain publication listed in this AD as of May 14, 2024 
(89 FR 33215, April 29, 2024).

ADDRESSES: 
    AD Docket: You may examine the AD docket at regulations.gov under 
Docket No. FAA-2024-0771, or in person at Docket Operations between 9 
a.m. and 5 p.m., Monday through Friday, except Federal holidays. The AD 
docket contains this final rule, any comments received, and other 
information. The address for Docket Operations is U.S. Department of 
Transportation, Docket Operations, M-30, West Building Ground Floor, 
Room W12-140, 1200 New Jersey Avenue SE, Washington, DC 20590.
    Material Incorporated by Reference:
     For service information identified in this final rule, 
contact General Electric Company, 1 Neumann Way, Cincinnati, OH 45215; 
phone: (513) 552-3272; email: ge.com">aviation.fleetsupport@ae.ge.com; website: 
ge.com.
     You may view this service information at the FAA, 
Airworthiness Products Section, Operational Safety Branch, 1200 
District Avenue, Burlington, MA 01803. For information on the 
availability of this material at the FAA, call (817) 222-5110. It is 
also available at regulations.gov under Docket No. FAA-2024-0771.

FOR FURTHER INFORMATION CONTACT: Alexander Thickstun, Aviation Safety 
Engineer, FAA, 2200 South 216th Street, Des Moines, WA 98198; phone: 
(202) 267-8292; email: [email protected].

SUPPLEMENTARY INFORMATION:

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 ``FAA-2024-0771; Project Identifier AD-2023-01251-
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 
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 
Alexander Thickstun, Aviation Safety Engineer, FAA, 2200

[[Page 41305]]

South 216th Street, Des Moines, WA 98198. Any commentary that the FAA 
receives which is not specifically designated as CBI will be placed in 
the public docket for this rulemaking.

Background

    AD 2024-06-15, Amendment 39-22720 (89 FR 33215, April 29, 2024), 
requires repetitive ultrasonic inspections (USIs) of the interstage 
high-pressure turbine (HPT) rotor seal for cracks and removal from 
service if necessary. As a mandatory terminating action to the 
repetitive USIs of the interstage HPT rotor seal, this AD requires 
replacement of the interstage HPT rotor seal.

Need for Correction

    As published, paragraphs (c), (g)(1), (g)(1)(i) and (ii), and 
(g)(2) in the regulatory text of AD 2024-06-15 are incorrect. These 
paragraphs refer to the service information as ``GE GE90-100 Service 
Bulletin (SB) 72-A0908 R00, dated July 7, 2023'' and ``GE SB 72-
A0908.'' The correct service information is ``GE GE90-100 Service 
Bulletin (SB) 72-0908 R00, dated July 7, 2023'' and ``GE SB 72-0908.''

Related Service Information Under 1 CFR Part 51

    The FAA reviewed GE GE90-100 Service Bulletin (SB) 72-0908 R00, 
dated July 7, 2023, which specifies procedures for performing a USI of 
the interstage HPT rotor seal. This service information is reasonably 
available because the interested parties have access to it through 
their normal course of business or by the means identified in 
ADDRESSES.

Correction of Publication

    This document corrects an error and correctly adds the AD as an 
amendment to 14 CFR 39.13. Although no other part of the preamble or 
regulatory information has been corrected, the FAA is publishing the 
entire rule in the Federal Register.
    The effective date of this AD remains May 14, 2024.
    Since this action only corrects a typographical error in the 
references to the service information, it has no adverse economic 
impact and imposes no additional burden on any person. Therefore, the 
FAA has determined that prior notice and public comment procedures are 
unnecessary.

List of Subjects in 14 CFR Part 39

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

Adoption of the Amendment

    Accordingly, pursuant to the authority delegated to me by the 
Administrator, the Federal Aviation Administration amends part 39 of 
the Federal Aviation Regulations (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  [Corrected]

0
2. The FAA amends Sec.  39.13 by adding the following airworthiness 
directive:

2024-06-15 General Electric Company: Amendment 39-22720; Docket No. 
FAA-2024-0771; Project Identifier AD-2023-01251-E.

(a) Effective Date

    This airworthiness directive (AD) is effective May 14, 2024.

(b) Affected ADs

    None.

(c) Applicability

    This AD applies to General Electric Company (GE) Model GE90-
110B1 and GE90-115B engines with an installed interstage high-
pressure turbine (HPT) rotor seal having a part number and serial 
number listed in Table 1 or Table 2 of GE GE90-100 Service Bulletin 
(SB) 72-0908 R00, dated July 7, 2023 (GE SB 72-0908).

(d) Subject

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

(e) Unsafe Condition

    This AD was prompted by a report of an aborted takeoff due to 
left engine failure caused by liberation of the interstage HPT rotor 
seal rim. The FAA is issuing this AD to prevent failure of the HPT. 
The unsafe condition, if not addressed, could result in uncontained 
HPT failure, release of high-energy debris, damage to the engine, 
damage to the airplane, and possible loss of the airplane.

(f) Compliance

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

(g) Required Actions

    (1) Perform an ultrasonic inspection (USI) of the interstage HPT 
rotor seal in accordance with the Accomplishment Instructions, 
paragraph 3.B.(2), of GE SB 72-0908, as follows:
    (i) Perform an initial USI before reaching the part cycles since 
new limit listed in Table 1 or Table 2, as applicable, of GE SB 72-
0908, or within 10 flight cycles after the effective date of this 
AD, whichever occurs later; and
    (ii) Repeat the USI thereafter within every 100 cycles or 175 
cycles, as applicable, as listed in Table 1 or Table 2 of GE SB 72-
0908, since the last inspection.
    (2) If, during any USI required by paragraph (g)(1)(i) or (ii) 
of this AD, a non-serviceable indication is found, as defined in 
paragraph 3.B.(2)(b) of GE SB 72-0908, before further flight, remove 
the interstage HPT rotor seal from service.

(h) Mandatory Terminating Action

    As a terminating action to the repetitive USI required by 
paragraph (g)(1)(i) or (ii) of this AD, at the next engine shop 
visit after the effective date of this AD, remove the affected 
interstage HPT rotor seal from service.

(i) Definition

    For the purpose of this AD, an ``engine shop visit'' is the 
induction of an engine into the shop for maintenance involving the 
separation of pairs of major mating engine case flanges, except 
separation of engine flanges solely for the purposes of 
transportation of the engine without subsequent maintenance, which 
does not constitute an engine shop visit.

(j) 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 AIR-520 Continued 
Operational Safety Branch, send it to the attention of the person 
identified in paragraph (k) 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.

(k) Additional Information

    For more information about this AD, contact Alexander Thickstun, 
Aviation Safety Engineer, FAA, 2200 South 216th Street, Des Moines, 
WA 98198; phone: (202) 267-8292; email: 
[email protected].

(l) Material Incorporated by Reference

    (1) The Director of the Federal Register approved the 
incorporation by reference (IBR) of the service information listed 
in this paragraph under 5 U.S.C. 552(a) and 1 CFR part 51.
    (2) You must use this service information as applicable to do 
the actions required by this AD, unless the AD specifies otherwise.
    (i) General Electric Company GE90-100 Service Bulletin 72-0908 
R00, dated July 7, 2023.
    (ii) [Reserved]
    (3) For service information identified in this AD, contact 
General Electric Company, 1 Newman Way, Cincinnati, OH 45215; phone: 
(513) 552-3272; email: ge.com">aviation.fleetsupport@ae.ge.com; website: 
ge.com.
    (4) You may view this service information at the FAA, 
Airworthiness Products Section,

[[Page 41306]]

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 May 2, 2024.
Victor Wicklund,
Deputy Director, Compliance & Airworthiness Division, Aircraft 
Certification Service.
[FR Doc. 2024-10093 Filed 5-6-24; 11:15 am]
BILLING CODE 4910-13-P
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