85890 Federal Register / Vol. 89, No. 209 / Tuesday, October 29, 2024 / Proposed Rules 

DG–1427 is newly proposed Revision 

0 of RG 1.257 and endorses, subject to 

the conditions described in Section C of 

this DG, the Institute of Electrical and 

Electronics Engineers Standard 1682– 

2023, which provides methods, 

directions, and documentation for the 

qualification of fiber optic cables, 

connections, and optical fiber splices in 

safety systems of production and 

utilization facilities. 

The staff is also issuing for public 

comment a draft regulatory analysis 

(ADAMS Accession No. ML24201A069). 

The staff developed a regulatory 

analysis to assess the value of issuing or 

revising an RG as well as alternative 

courses of action. 

As noted in the Federal Register on 

December 9, 2022 (87 FR 75671), this 

document is being published in the 

‘‘Proposed Rules’’ section of the Federal 

Register to comply with publication 

requirements under chapter I of title 1 

of the Code of Federal Regulations 

(CFR). 

III. Backfitting, Forward Fitting, and 

Issue Finality 

Issuance of DG–1427, if finalized, 

would not constitute backfitting as 

defined in 10 CFR 50.109, ‘‘Backfitting,’’ 

and as described in NRC Management 

Directive (MD) 8.4, ‘‘Management of 

Backfitting, Forward Fitting, Issue 

Finality, and Information Requests’’; 

does not affect issue finality of any 

approval issued under 10 CFR part 52, 

‘‘Licenses, Certificates, and Approvals 

for Nuclear Power Plants’’; nor 

constitute forward fitting as defined in 

MD 8.4, because, as explained in this 

DG, licensees would not be required to 

comply with the positions set forth in 

this DG. 

IV. Submitting Suggestions for 

Improvement of Regulatory Guides 

A member of the public may, at any 

time, submit suggestions to the NRC for 

improvement of existing RGs or for the 

development of new RGs. Suggestions 

can be submitted on the NRC’s public 

website at https://www.nrc.gov/readingrm/doc-collections/reg-guides/ 

contactus.html. Suggestions will be 

considered in future updates and 

enhancements to the ‘‘Regulatory 

Guide’’ series. 

Dated: October 23, 2024. 

For the Nuclear Regulatory Commission 

Stanley Gardocki, 

Acting Chief, Regulatory Guide and Programs 

Management Branch, Division of Engineering, 

Office of Nuclear Regulatory Research. 

[FR Doc. 2024–25038 Filed 10–28–24; 8:45 am] 

BILLING CODE 7590–01–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2024–2414; Project 

Identifier MCAI–2024–00530–E] 

RIN 2120–AA64 

Airworthiness Directives; Rolls-Royce 

Deutschland Ltd & Co KG 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Notice of proposed rulemaking 

(NPRM). 

SUMMARY: The FAA proposes to adopt a 

new airworthiness directive (AD) for all 

Rolls-Royce Deutschland Ltd & Co KG 

Model Trent 1000–AE3, Trent 1000– 

CE3, Trent 1000–D3, Trent 1000–G3, 

Trent 1000–H3, Trent 1000–J3, Trent 

1000–K3, Trent 1000–L3, Trent 1000– 

M3, Trent 1000–N3, Trent 1000–P3, 

Trent 1000–Q3, Trent 1000–R3, Trent 

7000–72, and Trent 7000–72C engines. 

This proposed AD was prompted by 

reports of cracked intermediate pressure 

compressor (IPC) shaft assembly front 

air seals. This proposed AD would 

require an inspection of the affected IPC 

shaft assembly for cracking and, 

depending on the results of the 

inspection, repetitive inspections or 

replacement of the IPC shaft assembly 

front air seals, as specified in a 

European Union Aviation Safety Agency 

(EASA) AD, which is incorporated by 

reference. The FAA is proposing this 

AD to address the unsafe condition on 

these products. 

DATES: The FAA must receive comments 

on this NPRM by December 13, 2024. 

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 

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. 

AD Docket: You may examine the AD 

docket at regulations.gov under Docket 

No. FAA–2024–2414; 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 NPRM, the mandatory 

continuing airworthiness information 

(MCAI), any comments received, and 

other information. The street address for 

Docket Operations is listed above. 

Material Incorporated by Reference: 

• For EASA material identified in this 

proposed AD, contact EASA, KonradAdenauer-Ufer 3, 50668 Cologne, 

Germany; phone: +49 221 8999 000; 

email: ADs@easa.europa.eu; website: 

easa.europa.eu. You may find this 

material on the EASA website at 

ad.easa.europa.eu. 

• You may view this material 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. 

FOR FURTHER INFORMATION CONTACT: 

Barbara Caufield, Aviation Safety 

Engineer, FAA, 2200 South 216th Street, 

Des Moines, WA 98198; phone: (781) 

238–7146; email: barbara.caufield@

faa.gov. 

SUPPLEMENTARY INFORMATION: 

Comments Invited 

The FAA invites you to send any 

written relevant data, views, or 

arguments about this proposal. Send 

your comments to an address listed 

under ADDRESSES. Include ‘‘Docket No. 

FAA–2024–2414; Project Identifier 

MCAI–2024–00530–E’’ at the beginning 

of your comments. The most helpful 

comments reference a specific portion of 

the proposal, 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 proposal 

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 NPRM. 

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 NPRM 

contain commercial or financial 

information that is customarily treated 

as private, that you actually treat as 

private, and that is relevant or 


khammond on DSKJM1Z7X2PROD with PROPOSALS
Federal Register / Vol. 89, No. 209 / Tuesday, October 29, 2024 / Proposed Rules 85891 

responsive to this NPRM, 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 

NPRM. Submissions containing CBI 

should be sent to Barbara Caufield, 

Aviation Safety Engineer, FAA, 2200 

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 

EASA, which is the Technical Agent 

for the Member States of the European 

Union, has issued EASA AD 2024–0178, 

dated September 12, 2024 (EASA AD 

2024–0178) (also referred to as the 

MCAI), to address an unsafe condition 

for all Model Trent 1000–AE3, Trent 

1000–CE3, Trent 1000–D3, Trent 1000– 

G3, Trent 1000–H3, Trent 1000–J3, 

Trent 1000–K3, Trent 1000–L3, Trent 

1000–M3, Trent 1000–N3, Trent 1000– 

P3, Trent 1000–Q3, Trent 1000–R3, 

Trent 7000–72, and Trent 7000–72 C 

engines. The MCAI states that there 

were reports of cracked IPC shaft 

assembly front air seals. Subsequent 

investigations identified possible 

change of the vibration and flutter 

characteristics of the affected IPC shaft 

assembly and identified a potential 

propagation of the cracking into the IPC 

stage 1 disc. Such cracking could lead 

to IPC stage 1 disk burst with 

consequent release of high energy debris 

and damage to the airplane or failure of 

the IPC front seal and release of debris, 

which could lead to an engine in-flight 

shutdown (IFSD) and in the case of a 

dual IFSD could result in reduced 

control of the airplane. 

You may examine the MCAI in the 

AD docket at regulations.gov under 

Docket No. FAA–2024–2414. 

Material Incorporated by Reference 

Under 1 CFR Part 51 

The FAA reviewed EASA AD 2024– 

0178, which specifies procedures for 

inspection of the affected IPC shaft 

assembly and replacement of the IPC 

shaft assembly front air seals. 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 the 

ADDRESSES section. 

FAA’s Determination 

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 is issuing this NPRM 

after determining that the unsafe 

condition described previously is likely 

to exist or develop on other products of 

the same type design. 

Proposed AD Requirements in This 

NPRM 

This proposed AD would require 

accomplishing the actions specified in 

the MCAI described previously, except 

for any differences identified as 

exceptions in the regulatory text of this 

proposed AD. 

Explanation of Required Compliance 

Information 

In the FAA’s ongoing efforts to 

improve the efficiency of the AD 

process, the FAA developed a process to 

use some civil aviation authority (CAA) 

ADs as the primary source of 

information for compliance with 

requirements for corresponding FAA 

ADs. The FAA has since coordinated 

with other manufacturers and CAAs to 

use this process. As a result, the FAA 

proposes to incorporate by reference 

EASA AD 2024–0178 in the FAA final 

rule. This proposed AD would, 

therefore, require compliance with 

EASA AD 2024–0178 in its entirety 

through that incorporation, except for 

any differences identified as exceptions 

in the regulatory text of this proposed 

AD. Using common terms that are the 

same as the heading of a particular 

section in the EASA AD does not mean 

that operators need comply only with 

that section. For example, where the AD 

requirement refers to ‘‘all required 

actions within the compliance times,’’ 

compliance with this AD requirement is 

not limited to the section titled 

‘‘Required Action(s) and Compliance 

Time(s)’’ in EASA AD 2024–0178. 

Service information required by the 

EASA AD for compliance will be 

available at regulations.gov under 

Docket No. FAA–2024–2414 after the 

FAA final rule is published. 

Costs of Compliance 

The FAA estimates that this AD, if 

adopted as proposed, would affect 64 

engines installed on airplanes of U.S. 

registry. 

The FAA estimates the following 

costs to comply with this proposed AD: 

ESTIMATED COSTS

Action Labor cost Parts cost Cost per 

product 

Cost on U.S. 

operators 

Inspect IPC shaft assembly ............................ 5 work-hours × $85 per hour = $425 ............. $0 $425 $27,200 

The FAA estimates the following 

costs to do any necessary replacements 

that would be required based on the 

results of the proposed inspection. The 

agency has no way of determining the 

number of engines that might need these 

replacements. 

ON-CONDITION COSTS

Action Labor cost Parts cost Cost per 

product 

Replace IPC shaft assembly front air seals ................. 80 work-hours × $85 per hour = $6,800 ...................... $7,000 $13,800 

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. 


khammond on DSKJM1Z7X2PROD with PROPOSALS
85892 Federal Register / Vol. 89, No. 209 / Tuesday, October 29, 2024 / Proposed Rules 

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 determined that this 

proposed AD would not have federalism 

implications under Executive Order 

13132. This proposed AD would 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 this proposed regulation: 

(1) Is not a ‘‘significant regulatory 

action’’ under Executive Order 12866, 

(2) Would not affect intrastate 

aviation in Alaska, and 

(3) Would 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 Proposed Amendment 

Accordingly, under the authority 

delegated to me by the Administrator, 

the FAA proposes to amend 14 CFR part 

39 as follows: 

PART 39—AIRWORTHINESS 

DIRECTIVES 

■ 1. The authority citation for part 39 

continues to read as follows: 

Authority: 49 U.S.C. 106(g), 40113, 44701. 

§ 39.13 [Amended] 

■ 2. The FAA amends § 39.13 by adding 

the following new airworthiness 

directive: 

Rolls-Royce Deutschland Ltd & Co KG: 

Docket No. FAA–2024–2414; Project 

Identifier MCAI–2024–00530–E. 

(a) Comments Due Date 

The FAA must receive comments on this 

airworthiness directive (AD) by December 13, 

2024. 

(b) Affected ADs 

None. 

(c) Applicability 

This AD applies to Rolls-Royce 

Deutschland Ltd & Co KG Model Trent 1000– 

AE3, Trent 1000–CE3, Trent 1000–D3, Trent 

1000–G3, Trent 1000–H3, Trent 1000–J3, 

Trent 1000–K3, Trent 1000–L3, Trent 1000– 

M3, Trent 1000–N3, Trent 1000–P3, Trent 

1000–Q3, Trent 1000–R3, Trent 7000–72, and 

Trent 7000–72C engines. 

(d) Subject 

Joint Aircraft System Component (JASC) 

Code 7230, Turbine Engine Compressor 

Section. 

(e) Unsafe Condition 

This AD was prompted by reports of 

cracked intermediate pressure compressor 

(IPC) shaft assembly front air seals. The FAA 

is issuing this AD to prevent an IPC stage 1 

disk burst or failure of the IPC front seal. The 

unsafe condition, if not addressed, could 

result in an IPC stage 1 disk burst with 

consequent release of high energy debris and 

damage to the airplane or failure of the IPC 

front seal and release of debris, which could 

lead to an engine in-flight shutdown (IFSD) 

and in the case of a dual IFSD could result 

in reduced control of the airplane. 

(f) Compliance 

Comply with this AD within the 

compliance times specified, unless already 

done. 

(g) Required Actions 

Except as specified in paragraphs (h), (i), 

and (j) of this AD: Perform all required 

actions within the compliance times 

specified in, and in accordance with, 

European Union Aviation Safety Agency AD 

2024–0178, dated September 12, 2024 (EASA 

AD 2024–0178). 

(h) Exceptions to EASA AD 2024–0178 

(1) Where EASA AD 2024–0178 refers to its 

effective date, this AD requires using the 

effective date of this AD. 

(2) Where the service information 

referenced in EASA AD 2024–0178 specifies 

to reject the engine, this AD requires 

removing the affected part from service. 

(3) This AD does not adopt the Remarks 

paragraph of EASA AD 2024–0178. 

(i) No Reporting Requirement 

Although the service information 

referenced in EASA AD 2024–0178 specifies 

to submit certain information to the 

manufacturer, this AD does not include that 

requirement. 

(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, AIR–520 Continued 

Operational Safety Branch, send it to the 

attention of the person identified in 

paragraph (k) of this AD and email to: 

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 Barbara Caufield, Aviation Safety 

Engineer, FAA, 2200 South 216th Street, Des 

Moines, WA 98198; phone: (781) 238–7146; 

email: barbara.caufield@faa.gov. 

(l) Material Incorporated by Reference 

(1) The Director of the Federal Register 

approved the incorporation by reference 

(IBR) of the material listed in this paragraph 

under 5 U.S.C. 552(a) and 1 CFR part 51. 

(2) You must use this material as 

applicable to do the actions required by this 

AD, unless the AD specifies otherwise. 

(i) European Union Aviation Safety Agency 

(EASA) AD 2024–0178, dated September 12, 

2024. 

(ii) [Reserved] 

(3) For EASA material identified in this 

AD, 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 material 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. 

Issued on October 22, 2024. 

Peter A. White, 

Deputy Director, Integrated Certificate 

Management Division, Aircraft Certification 

Service. 

[FR Doc. 2024–24964 Filed 10–28–24; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF DEFENSE 

Office of the Secretary 

32 CFR Part 310 

[Docket ID: DoD–2024–OS–0112] 

RIN 0790–AL45 

Privacy Act of 1974; Implementation 

AGENCY: Office of the Secretary, 

Department of Defense (DoD). 

ACTION: Proposed rule. 

SUMMARY: The Department of Defense 

(Department or DoD) is giving 

concurrent notice of a new system of 


khammond on DSKJM1Z7X2PROD with PROPOSALS