66314 Federal Register / Vol. 88, No. 186 / Wednesday, September 27, 2023 / Proposed Rules 

(3) The following service information was 

approved for IBR on [DATE 35 DAYS AFTER 

PUBLICATION OF THE FINAL RULE]. 

(i) Boeing Special Attention Service 

Bulletin 777–25–0607, Revision 2, dated 

January 27, 2023. 

(ii) Boeing Special Attention Service 

Bulletin 777–25–0619, Revision 2, dated 

January 27, 2023. 

(4) The following service information was 

approved for IBR on October 8, 2019 (84 FR 

45895, September 3, 2019). 

(i) Boeing Special Attention Service 

Bulletin 777–25–0619, Revision 1, dated 

August 8, 2018. 

(ii) [Reserved] 

(5) For service information identified in 

this AD, contact Boeing Commercial 

Airplanes, Attention: Contractual & Data 

Services (C&DS), 2600 Westminster Blvd., 

MC 110–SK57, Seal Beach, CA 90740–5600; 

telephone 562–797–1717; website 

myboeingfleet.com. 

(6) You may view this service information 

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. 

(7) You may view this service information 

that is incorporated by reference at the 

National Archives and Records 

Administration (NARA). For information on 

the availability of this material at NARA, 

fr.inspection@nara.gov, or go to: 

www.archives.gov/federal-register/cfr/ibrlocations.html. 

Issued on September 8, 2023. 

Caitlin Locke, 

Director, Compliance & Airworthiness 

Division, Aircraft Certification Service. 

[FR Doc. 2023–19797 Filed 9–26–23; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2023–1888; Project 

Identifier MCAI–2023–00298–E] 

RIN 2120–AA64 

Airworthiness Directives; Rolls-Royce 

Deutschland Ltd & Co KG Engines 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Proposed rule; correction. 

SUMMARY: The FAA is correcting a 

Notice of Proposed Rulemaking (NPRM) 

that published in the Federal Register. 

The NPRM proposed to issue an 

airworthiness directive (AD) that would 

apply to all Rolls-Royce Deutschland 

Ltd & Co KG (RRD) Model RB211–Trent 

800 engines. As published, the docket 

number referenced throughout the 

NPRM is incorrect. This document 

corrects that error. In all other respects, 

the original document remains the 

same; however, for clarity, the FAA is 

republishing the entire proposed rule in 

the Federal Register. 

DATES: The last date for submitting 

comments to the NPRM (88 FR 63539, 

September 15, 2023) remains October 

30, 2023. 

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–2023–1888; 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 service information identified 

in this NPRM, contact the European 

Union Aviation Safety Agency (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 material on the EASA website at 

ad.easa.europa.eu. It is also available at 

regulations.gov under Docket No. FAA– 

2023–1888. 

• 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. 

FOR FURTHER INFORMATION 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. 

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–2023–1888; Project Identifier 

MCAI–2023–00298–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 

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 Sungmo Cho, 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 

The FAA issued an NPRM (88 FR 

63539, September 15, 2023) that would 

apply to all RRD Model RB211–Trent 

800 engines. The NPRM proposed to 

require initial and repetitive on-wing or 

in-shop borescope inspections (BSIs) of 

certain intermediate-pressure 

compressor (IPC) rotor shaft balance 

lands for cracks, dents, and nicks, and 

replacement of the IPC rotor shaft if 

necessary, and proposed to prohibit the 

installation of a certain IPC rotor shaft 

on any engine, as specified in EASA AD 

2023–0040, dated February 16, 2023 

(EASA AD 2023–0040) (also referred to 

after this as the MCAI), which is 

proposed for incorporation by reference. 


ddrumheller on DSK120RN23PROD with PROPOSALS1
Federal Register / Vol. 88, No. 186 / Wednesday, September 27, 2023 / Proposed Rules 66315 

The NPRM was prompted by reports of 

cracks on certain IPC rotor shaft balance 

lands. This condition, if not addressed, 

could lead to IPC rotor shaft failure and 

consequent uncontained high-energy 

debris, resulting in damage to the 

airplane. 

Need for the Correction 

As published, the docket number 

referenced throughout the NPRM is 

incorrect. The NPRM incorrectly 

references ‘‘Docket No. FAA–2023– 

1880’’ instead of ‘‘Docket No. FAA– 

2023–1888.’’ 

Although no other part of the 

preamble or regulatory information has 

been corrected, for clarity, the FAA is 

publishing the entire proposed rule in 

the Federal Register. 

The comment due date of the NPRM 

remains October 30, 2023. 

Related Service Information Under 1 

CFR Part 51 

The FAA reviewed EASA AD 2023– 

0040, which specifies procedures for 

performing initial and repetitive onwing or in-shop BSIs of the IPC rotor 

shaft balance land for cracks, dents, and 

nicks, and replacing the IPC rotor shaft 

if necessary. The MCAI also specifies 

prohibiting the installation of a certain 

IPC rotor shaft on any engine and that 

accomplishing an in-shop EC inspection 

of the IPC rotor shaft balance land or 

replacing the IPC rotor shaft constitutes 

as terminating action for the repetitive 

BSIs. 

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. 

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 described 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 2023–0040 in the FAA final 

rule. This proposed AD would, 

therefore, require compliance with 

EASA AD 2023–0040 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 2023–0040. 

Service information required by the 

EASA AD for compliance will be 

available at regulations.gov under 

Docket No. FAA–2023–1888 after the 

FAA final rule is published. 

Costs of Compliance 

The FAA estimates that this AD, if 

adopted as proposed, would affect 194 

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 

BSI of IPC rotor shaft balance land ................ 4.5 work-hours × $85 per hour = $382.50 ..... $0 $382.50 $74,205 

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 aircraft that might need these 

replacements: 

ON-CONDITION COSTS

Action Labor cost Parts cost Cost per 

product 

Replace IPC rotor shaft ................................................ 50 work-hours × $85 per hour = $4,250 ...................... $2,123,908 $2,128,158 

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 determined that this 

proposed AD would not have federalism 

implications under Executive Order 


ddrumheller on DSK120RN23PROD with PROPOSALS1
66316 Federal Register / Vol. 88, No. 186 / Wednesday, September 27, 2023 / Proposed Rules 

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 [Corrected] 

■ 2. The FAA amends § 39.13 by adding 

the following new airworthiness 

directive: 

Rolls-Royce Deutschland Ltd & Co KG: 

Docket No. FAA–2023–1888; Project 

Identifier MCAI–2023–00298–E. 

(a) Comments Due Date 

The FAA must receive comments on this 

airworthiness directive (AD) by October 30, 

2023. 

(b) Affected ADs 

None. 

(c) Applicability 

This AD applies to Rolls-Royce 

Deutschland Ltd & Co KG (RRD) Model 

RB211-Trent 875–17, RB211-Trent 877–17, 

RB211-Trent 884–17, RB211-Trent 884B–17, 

RB211-Trent 892–17, RB211-Trent 892B–17, 

and RB211-Trent 895–17 engines. 

(d) Subject 

Joint Aircraft System Component (JASC) 

Code 7230, Turbine Engine Compressor 

Section. 

(e) Unsafe Condition 

This AD was prompted by reports of cracks 

on the intermediate-pressure compressor 

(IPC) rotor shaft balance land. The FAA is 

issuing this AD to detect cracks on the IPC 

rotor shaft balance land. The unsafe 

condition, if not addressed, could lead to IPC 

rotor shaft failure and consequent 

uncontained high-energy debris, resulting in 

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 paragraphs (h) and 

(i) of this AD: Perform all required actions 

within the compliance times specified in, 

and in accordance with, European Union 

Aviation Safety Agency (EASA) AD 2023– 

0040, dated February 16, 2023 (EASA AD 

2023–0040). 

(h) Exceptions to EASA AD 2023–0040 

(1) Where EASA AD 2023–0040 refers to its 

effective date, this AD requires using the 

effective date of this AD. 

(2) This AD does not adopt the Remarks 

paragraph of EASA AD 2023–0040. 

(3) Where the service information 

referenced in EASA AD 2023–0040 specifies 

to use certain tooling, equivalent tooling may 

be used. 

(i) No Reporting Requirement 

Although the service information 

referenced in EASA AD 2023–0040 specifies 

to notify the manufacturer or supply pictures 

to the manufacturer of any cracks, dents, or 

nicks, this AD does not include that 

requirement. 

(j) Alternative Methods of Compliance 

(AMOCs) 

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 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 Sungmo Cho, Aviation Safety 

Engineer, FAA, 2200 South 216th Street, Des 

Moines, WA 98198; phone: (781) 238–7241; 

email: sungmo.d.cho@faa.gov. 

(l) 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 2023–0040, dated February 16, 

2023. 

(ii) [Reserved] 

(3) For EASA AD 2023–0040, 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 material 

on the EASA website at ad.easa.europa.eu. 

(4) 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. 

This material may be found in the AD docket 

at regulations.gov under Docket No. FAA– 

2023–1888. 

(5) You may view this service information 

that is incorporated by reference at the 

National Archives and Records 

Administration (NARA). For information on 

the availability of this material at NARA, 

email: fr.inspection@nara.gov, or go to: 

www.archives.gov/federal-register/cfr/ibrlocations.html. 

Issued on September 22, 2023. 

Victor Wicklund, 

Deputy Director, Compliance & Airworthiness 

Division, Aircraft Certification Service. 

[FR Doc. 2023–21082 Filed 9–25–23; 4:15 pm] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2023–1889; Project 

Identifier MCAI–2023–00738–E] 

RIN 2120–AA64 

Airworthiness Directives; Rolls-Royce 

Deutschland Ltd & Co KG Engines 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Proposed rule; correction. 

SUMMARY: The FAA is correcting a 

Notice of Proposed Rulemaking (NPRM) 

that published in the Federal Register. 

The NPRM proposed to issue an 

airworthiness directive (AD) that would 

apply to certain Rolls-Royce 

Deutschland Ltd & Co KG (RRD) Model 

Trent 1000 engines. As published, the 

docket number referenced throughout 

the NPRM is incorrect. This document 

corrects that error. In all other respects, 

the original document remains the 

same; however, for clarity, the FAA is 

publishing the entire proposed rule in 

the Federal Register. 

DATES: The last date for submitting 

comments to the NPRM (88 FR 63885, 

September 18, 2023) remains November 

2, 2023. 

ADDRESSES: You may send comments, 

using the procedures found in 14 CFR 

11.43 and 11.45, by any of the following 

methods: 


ddrumheller on DSK120RN23PROD with PROPOSALS1