Federal Register / Vol. 88, No. 218 / Tuesday, November 14, 2023 / Rules and Regulations 77889 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2023–1490; Project 

Identifier MCAI–2022–01624–E; Amendment 

39–22580; AD 2023–21–08] 

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) 2021–21– 

13 for certain Rolls-Royce Deutschland 

Ltd & Co KG (RRD) Model Trent 1000 

engines. AD 2021–21–13 required the 

operator to revise the airworthiness 

limitation section (ALS) of their existing 

approved aircraft maintenance program 

(AMP) by incorporating the revised 

tasks of the applicable time limits 

manual (TLM) for each affected model 

engine. Since the FAA issued AD 2021– 

21–13, the manufacturer has revised the 

TLM, introducing new and more 

restrictive instructions. This AD is 

prompted by the manufacturer revising 

the engine TLM life limits of certain 

critical rotating parts. This AD requires 

revisions to the ALS of the operator’s 

existing approved AMP, as specified in 

a European Union Aviation Safety 

Agency (EASA) AD, which is 

incorporated by reference. The FAA is 

issuing this AD to address the unsafe 

condition on these products. 

DATES: This AD is effective December 

19, 2023. 

The Director of the Federal Register 

approved the incorporation by reference 

of a certain publication listed in this AD 

as of December 19, 2023. 

ADDRESSES: 

AD Docket: You may examine the AD 

docket at regulations.gov under Docket 

No. FAA–2023–1490; 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 EASA service information 

identified in this final rule, 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. 

• You may view this service 

information at the FAA, Airworthiness 

Products Section, Operational Safety 

Branch, 1200 District Avenue, 

Burlington, MA 01803. For information 

on the availability of this material at the 

FAA, call (817) 222–5110. It is also 

available at regulations.gov under 

Docket No. FAA–2023–1490. 

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 2021–21–13, 

Amendment 39–21773 (86 FR 64066, 

November 17, 2021), (AD 2021–21–13). 

AD 2021–21–13 applied to certain RRD 

Model Trent 1000 engines. AD 2021– 

21–13 required the operator to revise the 

ALS of their existing approved AMP by 

incorporating the revised tasks of the 

applicable TLM for each affected model 

engine. The FAA issued AD 2021–21–13 

to prevent the failure of critical rotating 

parts. 

The NPRM published in the Federal 

Register on July 14, 2023 (88 FR 45106). 

The NPRM was prompted by AD EASA 

AD 2022–0259, dated December 20, 

2022 (EASA AD 2022–0259) (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 the manufacturer 

published a revised TLM introducing 

new or more restrictive tasks and 

limitations. These new or more 

restrictive tasks and limitations include 

updating declared lives of certain 

critical parts, updating direct 

accumulation counting data files, and 

updated inspections. 

You may examine the MCAI in the 

AD docket at regulations.gov under 

Docket No. FAA–2023–1490. 

In the NPRM, the FAA proposed to 

require revisions to the ALS of the 

operator’s existing approved AMP. 

Discussion of Final Airworthiness 

Directive 

Comments 

The FAA received one comment from 

The Boeing Company (Boeing). Boeing 

supported the NPRM without change. 

Conclusion 

These products have been approved 

by the aviation authority of another 

country and are approved for operation 

in the United States. Pursuant to the 

FAA’s bilateral agreement with this 

State of Design Authority, it has notified 

the FAA of the unsafe condition 

described in the MCAI referenced 

above. The FAA reviewed the relevant 

data, 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, this AD is adopted as proposed 

in the NPRM. 

Related Service Information Under 1 

CFR Part 51 

The FAA reviewed EASA AD 2022– 

0259, which specifies instructions for 

accomplishing the actions specified in 

the applicable TLM, including 

performing maintenance tasks, replacing 

life-limited parts, and revising the 

existing approved maintenance or 

inspection program, as applicable, by 

incorporating the limitations, tasks, and 

associated thresholds and intervals 

described in the TLM. 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 EASA AD 2022–0259 defines 

the AMP as the Aircraft Maintenance 

Programme, which contains the tasks on 

the basis of which the scheduled 

maintenance is conducted to ensure the 

continuing airworthiness of each 

operated engine, this AD defines the 

AMP as the Aircraft Maintenance 

Program, which contains the tasks of 

which the operator or the owner ensures 

the continuing airworthiness of each 

operated airplane. 

Where paragraph (3) of EASA AD 

2022–0259 specifies revising the 

approved Aircraft Maintenance 

Programme within 12 months after the 

effective date of EASA AD 2022–0259, 

this AD requires revising the ALS of the 

existing approved maintenance or 

inspection program, as applicable, 

within 90 days after the effective date of 

this AD. 

Costs of Compliance 

The FAA estimates that this AD 

affects 28 engines installed on airplanes 

of U.S. registry. 

The FAA estimates the following 

costs to comply with this AD: 


khammond on DSKJM1Z7X2PROD with RULES
77890 Federal Register / Vol. 88, No. 218 / Tuesday, November 14, 2023 / Rules and Regulations 

ESTIMATED COSTS

Action Labor cost Parts cost Cost per 

product 

Cost on U.S. 

operators 

Revise the ALS ............................................... 1 work-hours × $85 per hour = $85 ............... $0 $85 $2,380 

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 

2021–21–13, Amendment 39–21773 (86 

FR 64066, November 17, 2021); and 

■ b. Adding the following new 

airworthiness directive: 

2023–21–08 Rolls-Royce Deutschland Ltd & 

Co KG: Amendment 39–22580; Docket 

No. FAA–2023–1490; Project Identifier 

MCAI–2022–01624–E. 

(a) Effective Date 

This airworthiness directive (AD) is 

effective December 19, 2023. 

(b) Affected ADs 

This AD replaces AD 2021–21–13, 

Amendment 39–21773 (86 FR 64066, 

November 17, 2021). 

(c) Applicability 

This AD applies to Rolls-Royce 

Deutschland Ltd & Co KG (RRD) Model Trent 

1000–A, Trent 1000–AE, Trent 1000–C, Trent 

1000–CE, Trent 1000–D, Trent 1000–E, Trent 

1000–G, and Trent 1000–H engines. 

(d) Subject 

Joint Aircraft System Component (JASC) 

Code 7200, Engine (Turbine/Turboprop). 

(e) Unsafe Condition 

This AD was prompted by the 

manufacturer revising the engine Time 

Limits Manual life limits of certain critical 

rotating parts. The FAA is issuing this AD to 

prevent the failure of critical rotating parts. 

The unsafe condition, if not addressed, could 

result in failure of critical rotating parts, 

which could result in failure of one or more 

engines, loss of thrust control, and loss of the 

airplane. 

(f) Compliance 

Comply with this AD within the 

compliance times specified, unless already 

done. 

(g) Required Actions 

Except as specified in paragraph (h) of this 

AD: Perform all required actions within the 

compliance times specified in, and in 

accordance with, European Union Aviation 

Safety Agency (EASA) AD 2022–0259, dated 

December 20, 2022 (EASA AD 2022–0259). 

(h) Exceptions to EASA AD 2022–0259 

(1) Where EASA AD 2022–0259 defines the 

AMP as the Aircraft Maintenance 

Programme, which contains the tasks on the 

basis of which the scheduled maintenance is 

conducted to ensure the continuing 

airworthiness of each operated engine, this 

AD defines the AMP as the Aircraft 

Maintenance Program, which contains the 

tasks of which the operator or the owner 

ensures the continuing airworthiness of each 

operated airplane. 

(2) Where EASA AD 2022–0259 refers to its 

effective date, this AD requires using the 

effective date of this AD. 

(3) This AD does not require compliance 

with paragraph (1) of EASA AD 2022–0259. 

(4) This AD does not require compliance 

with paragraph (2) of EASA AD 2022–0259. 

(5) Where paragraph (3) of EASA AD 2022– 

0259 specifies revising the approved Aircraft 

Maintenance Programme within 12 months 

after the effective date of EASA AD 2022– 

0259, this AD requires revising the 

airworthiness limitations section of the 

existing approved maintenance or inspection 

program, as applicable, within 90 days after 

the effective date of this AD. 

(6) This AD does not adopt the ‘‘Remarks’’ 

paragraph of EASA AD 2022–0259. 

(i) Provisions for Alternative Actions and 

Intervals 

After performing the actions required by 

paragraph (g) of this AD, no alternative 

actions and associated thresholds and 

intervals, including life limits, are allowed 

unless they are approved as specified in the 

provisions of the ‘‘Ref. Publications’’ section 

of EASA AD 2022–0259. 

(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 responsible Flight Standards 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. 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. 


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Federal Register / Vol. 88, No. 218 / Tuesday, November 14, 2023 / Rules and Regulations 77891 

(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 2022–0259, dated December 20, 

2022. 

(ii) [Reserved] 

(3) For EASA AD 2022–0259, contact 

EASA, Konrad-Adenauer-Ufer 3, 50668 

Cologne, Germany; phone: +49 221 8999 000; 

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

easa.europa.eu. You may find this EASA AD 

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

(4) You may view this service information 

at FAA, Airworthiness Products Section, 

Operational Safety Branch, 1200 District 

Avenue, Burlington, MA 01803. For 

information on the availability of this 

material at the FAA, call (817) 222–5110. 

This material may be found in the AD docket 

at regulations.gov under Docket No. FAA– 

2023–1490. 

(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 20, 2023. 

Ross Landes, 

Deputy Director for Regulatory Operations, 

Compliance & Airworthiness Division, 

Aircraft Certification Service. 

[FR Doc. 2023–25099 Filed 11–13–23; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2023–2150; Project 

Identifier MCAI–2023–00188–R; Amendment 

39–22603; AD 2023–23–01] 

RIN 2120–AA64 

Airworthiness Directives; Airbus 

Helicopters 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Final rule; request for 

comments. 

SUMMARY: The FAA is superseding 

Airworthiness Directive (AD) 2022–01– 

05, which applied to certain Airbus 

Helicopters Model EC130T2 helicopters. 

AD 2022–01–05 required repetitive 

visual inspections of the rivets on the 

rear transmission shaft bearing support, 

inspections of the local structure, and 

rivet heads on the left-hand and righthand sides of the rear transmission shaft 

bearing support for cracking, missing, 

loose, or sheared rivets. AD 2022–01–05 

also required reporting the results of 

those inspections and depending on the 

results, applicable corrective action. 

Since the FAA issued AD 2022–01–05, 

Airbus Helicopters revised its service 

information to add procedures to 

improve visual inspections of the rivets 

on the rear transmission shaft bearing 

support. This AD was prompted by the 

determination that certain modified 

helicopters may have finishing paint 

applied to the gutter, which could 

prevent detection of cracks during 

inspections. This AD also extends the 

repetitive compliance time interval for 

certain inspections. This AD continues 

to require certain actions in AD 2022– 

01–05 and requires a one-time visual 

inspection for paint in the gutter area, 

and removal of paint if necessary, as 

specified in a European Union Aviation 

Safety Agency (EASA) AD, which is 

incorporated by reference. The FAA is 

issuing this AD to address the unsafe 

condition on these products. 

DATES: This AD is effective November 

29, 2023. 

The Director of the Federal Register 

approved the incorporation by reference 

of a certain publication listed in this AD 

as of November 29, 2023. 

The FAA must receive comments on 

this AD by December 29, 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–2023–2150; 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 EASA AD, 

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 

final rule, contact EASA, KonradAdenauer-Ufer 3, 50668 Cologne, 

Germany; telephone +49 221 8999 000; 

email ADs@easa.europa.eu; internet 

www.easa.europa.eu. 

• You may view this material at the 

FAA, Office of the Regional Counsel, 

Southwest Region, 10101 Hillwood 

Pkwy., Room 6N–321, Fort Worth, TX 

76177. For information on the 

availability of this material at the FAA, 

call (817) 222 5110. It is also available 

at regulations.gov under Docket No. 

FAA–2023–2150. 

Other Related Service Information: 

For Airbus Helicopters service 

information identified in this final rule, 

contact Airbus Helicopters, 2701 North 

Forum Drive, Grand Prairie, TX 75052; 

phone (972) 641–0000 or (800) 232– 

0323; fax (972) 641–3775; or at 

airbus.com/en/products-services/ 

helicopters/hcare-services/airbusworld. 

You may also view this service 

information at the FAA contact 

information under Material 

Incorporated by Reference above. 

FOR FURTHER INFORMATION CONTACT: Dan 

McCully, Program Manager, 

International Validation Branch, FAA, 

1600 Stewart Ave., Suite 410, Westbury, 

NY 11590; telephone (404) 474–5548; 

email william.mccully@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 ‘‘Docket No. FAA–2023–2150; 

Project Identifier MCAI–2023–00188–R’’ 

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, 


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