This section of the FEDERAL REGISTER

contains regulatory documents having general

applicability and legal effect, most of which

are keyed to and codified in the Code of

Federal Regulations, which is published under

50 titles pursuant to 44 U.S.C. 1510.

The Code of Federal Regulations is sold by

the Superintendent of Documents.

Rules and Regulations Federal Register

65581 

Vol. 88, No. 184 

Monday, September 25, 2023 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2023–0932; Project 

Identifier MCAI–2022–01491–E; Amendment 

39–22542; AD 2023–18–01] 

RIN 2120–AA64 

Airworthiness Directives; Rolls-Royce 

Deutschland Ltd. & Co. KG Engines 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Final rule. 

SUMMARY: The FAA is superseding 

Airworthiness Directive (AD) 2021–26– 

11 for all Rolls-Royce Deutschland Ltd. 

& Co. KG (RRD) Model RB211-Trent 

875–17, 877–17, 884–17, 884B–17, 892– 

17, 892B–17, and 895–17 engines. AD 

2021–26–11 required replacing the 

affected fuel pump on at least one 

affected engine. Since the FAA issued 

AD 2021–26–11, the FAA has 

determined that replacing all affected 

fuel pumps on all installed engines is 

necessary to address the unsafe 

condition. This AD was prompted by 

reports of single-engine events caused 

by water contamination, which led to 

corrosion on the fuel pump that resulted 

in loss of engine thrust. This AD 

requires replacing the affected fuel 

pump on at least one engine before 

further flight and replacing all affected 

fuel pumps within a specified 

compliance time. This AD would also 

prohibit installing any affected engine 

onto any airplane or any affected fuel 

pump onto any engine, as specified in 

a European Union Aviation Safety 

Agency (EASA) AD, which is 

incorporated by reference (IBR). The 

FAA is issuing this AD to address the 

unsafe condition on these products. 

DATES: This AD is effective October 30, 

2023. 

The Director of the Federal Register 

approved the incorporation by reference 

of a certain publication listed in this AD 

as of October 30, 2023. 

ADDRESSES: 

AD Docket: You may examine the AD 

docket at regulations.gov under Docket 

No. FAA–2023–0932; 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, KonradAdenauer-Ufer 3, 50668 Cologne, 

Germany; phone: +49 221 8999 000; 

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

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 in the AD docket at 

regulations.gov under Docket No. FAA– 

2023–0932. 

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: 

Background 

The FAA issued a notice of proposed 

rulemaking (NPRM) to amend 14 CFR 

part 39 to supersede AD 2021–26–11, 

Amendment 39–21870 (86 FR 71367, 

December 16, 2021), (AD 2021–26–11). 

AD 2021–26–11 applied to all RRD 

Model RB211 Trent 875–17, 877–17, 

884–17, 884B–17, 892–17, 892B–17, and 

895–17 engines. AD 2021–26–11 

required replacing the affected fuel 

pump on at least one affected engine. 

The FAA issued AD 2021–26–11 to 

prevent failure of the variable stator 

vane system. 

The NPRM published in the Federal 

Register on April 18, 2023 (88 FR 

23583). The NPRM was prompted by 

EASA AD 2022–0225, dated November 

21, 2022 (EASA AD 2022–0225) 

(referred to after this as the MCAI), 

issued by EASA, which is the Technical 

Agent for the Member States of the 

European Union. The MCAI states that 

reports of single-engine events caused 

by water contamination resulted in loss 

of engine thrust. An investigation 

determined that certain engines were 

exposed to unacceptable levels of water 

contamination, which caused corrosion 

on the fuel pump’s internal 

components. This corrosion led to 

debris release and filter blockages in 

variable stator vane actuator control 

units, which resulted in the variable 

stator vane system failing in the closed 

position. 

The FAA has since determined that in 

addition to replacing the affected fuel 

pump on at least one engine before 

further flight, replacing all affected fuel 

pumps installed on all engines within a 

specified compliance time and 

prohibiting installation of any affected 

engine onto any airplane or any affected 

fuel pump onto any engine is necessary 

to address the unsafe condition. 

Subsequently, the manufacturer 

published service information, which 

describes procedures for replacing the 

fuel pump. 

You may examine the MCAI in the 

AD docket at regulations.gov under 

Docket No. FAA–2023–0932. 

In the NPRM, the FAA proposed to 

require replacing the affected fuel pump 

on at least one engine before further 

flight and replacing all affected fuel 

pumps within a specified compliance 

time. In the NPRM, the FAA also 

proposed to prohibit installation of any 

affected engine onto any airplane or any 

affected fuel pump onto any engine. 

Discussion of Final Airworthiness 

Directive 

Comments 

The FAA received comments from 

two commenters. The commenters were 

American Airlines (AA) and The Boeing 

Company (Boeing). The following 

presents the comments received on the 

NPRM and the FAA’s response to each 

comment. 

Support for the AD 

Boeing supported the NPRM without 

change. 


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65582 Federal Register / Vol. 88, No. 184 / Monday, September 25, 2023 / Rules and Regulations 

Request To Clarify Return of Affected 

Parts 

AA requested that the FAA clarify 

whether the intent of the NPRM is for 

affected pumps to be returned to Eaton 

Corporation for rectification/ 

modification to become eligible for 

installation, or for all affected pumps 

listed in Rolls-Royce Alert NonModification Service Bulletin (NMSB) 

RB.211–73–AK840, Original Issue, 

dated Sep 13, 2022 (RB.211–73–AK840), 

to never be reinstalled on any U.S. 

registered carrier’s engine or aircraft. 

AA stated that EASA AD 2022–0225 

allows pumps modified by RB.211–73– 

AK840 to be reinstalled, and since 

EASA AD 2022–0225 is incorporated by 

reference, it can be assumed that the 

NPRM also allows pumps modified by 

RB.211–73–AK840 to be reinstalled. AA 

also noted that paragraphs (h)(5) and (6) 

of the proposed AD do not indicate if an 

affected pump that is removed from 

service should be returned to the Eaton 

Corporation for rectification/ 

modification. Additionally, AA noted 

that if an affected pump is not returned 

to the Eaton Corporation for 

rectification/modification, it will never 

be eligible for reinstallation. 

The FAA agrees to clarify. The intent 

of the NPRM is not to require that the 

affected parts never be reinstalled on 

any U.S. registered carrier’s engine or 

aircraft. If an affected part is repaired, it 

is no longer considered to be included 

in the population of affected parts, and, 

therefore, is eligible for reinstallation. 

However, the FAA cannot require that 

an affected part be sent to a specific 

shop for repair, as that decision is at the 

discretion of the operator. Operators 

may elect to return affected fuel pumps 

that have been removed from service to 

the vendor, or to an approved facility for 

repair. 

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, considered the comments 

received, and determined that air safety 

requires adopting the AD as proposed. 

Accordingly, the FAA is issuing this AD 

to address the unsafe condition on these 

products. Except for minor editorial 

changes, and any other changes 

described previously, this AD is 

adopted as proposed in the NPRM. 

Related Service Information Under 1 

CFR Part 51 

The FAA reviewed EASA AD 2022– 

0225, which specifies procedures for 

replacing the affected fuel pump. EASA 

AD 2022–0225 also specifies not to 

install an affected engine onto any 

airplane or an affected part onto any 

engine. 

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. 

Differences Between This AD and the 

MCAI 

Where paragraph (1) of EASA AD 

2022–0225 requires replacing the 

affected part within 30 days after 

November 17, 2021 (the effective date of 

EASA AD 2021–0245), this AD requires 

replacing an affected fuel pump on at 

least one engine before further flight 

after the effective date of this AD. 

Where paragraphs (3) and (4) of EASA 

AD 2022–0225 refer to November 17, 

2021 (the effective date of EASA AD 

2021–0245), this AD requires using the 

effective date of this AD. 

Costs of Compliance 

The FAA estimates that this AD 

affects 2 engines installed on airplanes 

of U.S. registry. 

The FAA estimates the following 

costs to comply with this AD: 

ESTIMATED COSTS

Action Labor cost Parts cost Cost per 

product 

Cost on U.S. 

operators 

Replace fuel pump .................. 9 work-hours × $85 per hour = $765 ..................................... $138,456 $139,221 $278,442 

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 

■ 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 

2021–26–11, Amendment 39–21870 (86 

FR 71367, December 16, 2021); and 


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Federal Register / Vol. 88, No. 184 / Monday, September 25, 2023 / Rules and Regulations 65583 

■ b. Adding the following new 

airworthiness directive: 

2023–18–01 Rolls-Royce Deutschland Ltd & 

Co KG: Amendment 39–22542; Docket 

No. FAA–2023–0932; Project Identifier 

MCAI–2022–01491–E. 

(a) Effective Date 

This airworthiness directive (AD) is 

effective October 30, 2023. 

(b) Affected ADs 

This AD replaces AD 2021–26–11, 

Amendment 39–21870 (86 FR 71367, 

December 16, 2021). 

(c) Applicability 

This AD applies to Rolls-Royce 

Deutschland Ltd. & Co. KG Model RB211– 

Trent 875–17, 877–17, 884–17, 884B–17, 

892–17, 892B–17, and 895–17 engines. 

(d) Subject 

Joint Aircraft System Component (JASC) 

Code 7314, Engine Fuel Pump. 

(e) Unsafe Condition 

This AD was prompted by reports of 

single-engine events caused by water 

contamination, which led to corrosion on the 

fuel pump that resulted in loss of engine 

thrust. The FAA is issuing this AD to prevent 

failure of the variable stator vane system. The 

unsafe condition, if not addressed, could 

result in dual-engine loss of thrust control or 

in-flight engine shutdown, and 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) 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 2022– 

0225, dated November 21, 2022 (EASA AD 

2022–0225). 

(h) Exceptions to EASA AD 2022–0225 

(1) Where paragraph (1) of EASA AD 2022– 

0225 specifies to replace the affected part 

with a fuel pump that is not an affected part, 

on at least one of the affected engines within 

30 days after 17 November 2021 (the effective 

date of EASA AD 2021–0245), this AD 

requires replacing an affected fuel pump on 

at least one engine before further flight after 

the effective date of this AD. 

(2) Where paragraph (2) of EASA AD 2022– 

0225 refers to its effective date, this AD 

requires using the effective date of this AD. 

(3) Where paragraphs (3) and (4) of EASA 

AD 2022–0225 refer to November 17, 2021 

(the effective date of EASA AD 2021–0245), 

this AD requires using the effective date of 

this AD. 

(4) This AD does not adopt the Remarks 

paragraph of EASA AD 2022–0225. 

(5) Where the service information 

referenced in EASA AD 2022–0225 specifies 

to scrap fuel pumps, this AD requires 

removing those fuel pumps from service. 

(6) Where the service information 

referenced in EASA AD 2022–0225 specifies 

to return fuel pumps, this AD requires 

removing those fuel pumps from service. 

(i) No Reporting Requirement 

Although the service information 

referenced in EASA AD 2022–0225 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 responsible Flight Standards 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 (k) 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. 

(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 2022–0225, dated November 21, 

2022. 

(ii) [Reserved] 

(3) For EASA AD 2022–0225, 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 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. 

(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 19, 2023. 

Victor Wicklund, 

Deputy Director, Compliance & Airworthiness 

Division, Aircraft Certification Service. 

[FR Doc. 2023–20635 Filed 9–22–23; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2023–1210; Project 

Identifier MCAI–2022–01530–E; Amendment 

39–22546; AD 2023–18–05] 

RIN 2120–AA64 

Airworthiness Directives; Rolls-Royce 

Deutschland Ltd & Co KG Engines 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Final rule. 

SUMMARY: The FAA is adopting a new 

airworthiness directive (AD) for all 

Rolls-Royce Deutschland Ltd & Co KG 

(RRD) Model RB211–535C–37 engines. 

This AD is prompted by the 

manufacturer revising the existing 

engine time limits manual (TLM) to 

introduce new or more restrictive 

airworthiness limitations and associated 

thresholds and intervals for life-limited 

parts. This AD requires revising the 

airworthiness limitations section (ALS) 

of the operator’s existing approved 

engine maintenance or inspection 

program, as applicable, to incorporate 

new or more restrictive instructions and 

associated thresholds and intervals for 

life-limited parts, as specified in a 

European Union Aviation Safety Agency 

(EASA) AD, which is proposed for 

incorporation by reference (IBR). The 

FAA is issuing this AD to address the 

unsafe condition on these products. 

DATES: This AD is effective October 30, 

2023. 

The Director of the Federal Register 

approved the incorporation by reference 

of a certain publication listed in this AD 

as of October 30, 2023. 

ADDRESSES: 

AD Docket: You may examine the AD 

docket at regulations.gov under Docket 

No. FAA–2023–1210; 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 


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