60566 Federal Register / Vol. 88, No. 170 / Tuesday, September 5, 2023 / Rules and Regulations 

new maximum total deferred premium 

is $158,026,000, and the maximum 

annual deferred premium is 

$24,714,000. Section 140.11(a)(4) is 

amended accordingly. 

III. Rulemaking Procedure 

This final rule is being issued without 

prior public notice or opportunity for 

public comment. The Administrative 

Procedure Act (5 U.S.C. 553(b)(B)) does 

not require an agency to use the public 

notice and comment process ‘‘when the 

agency for good cause finds (and 

incorporates the finding and a brief 

statement of reasons therefore in the 

rules issued) that notice and public 

procedure thereon are impracticable, 

unnecessary, or contrary to the public 

interest.’’ In this instance, the NRC 

finds, for good cause, that solicitation of 

public comment on this final rule is 

unnecessary because the PriceAnderson Act requires these nondiscretionary adjustments in the 

maximum total and annual standard 

deferred premiums. Requesting public 

comment on these adjustments, which 

are made pursuant to a formula required 

by statute, would not result in a change 

to the adjusted amount. Consistent with 

this finding of good cause, and as 

permitted by 5 U.S.C. 808(2), the NRC 

has determined that the effective date of 

this rule will be October 5, 2023. 

IV. Regulatory Flexibility Certification 

The Regulatory Flexibility Act does 

not apply to regulations for which a 

Federal agency is not required by law, 

including the rulemaking provisions of 

the Administrative Procedure Act, 5 

U.S.C. 553(b), to publish a general 

notice of proposed rulemaking (5 U.S.C. 

604). As discussed in this document 

under Section III, ‘‘Rulemaking 

Procedure,’’ the NRC is not publishing 

this final rule for notice and comment. 

Accordingly, the NRC has determined 

that the requirements of the Regulatory 

Flexibility Act do not apply to this final 

rule. 

V. Regulatory Analysis 

A regulatory analysis has not been 

prepared for this final rule. As 

discussed in this document under 

Section III, ‘‘Rulemaking Procedure,’’ 

the Price-Anderson Act requires that the 

NRC perform this rulemaking according 

to a formula required by statute. This 

final rule does not involve an exercise 

of Commission discretion. 

VI. Backfitting and Issue Finality 

The NRC has not prepared a backfit 

analysis for this final rule. This final 

rule does not involve any provision that 

would impose a backfit, nor is it 

inconsistent with any issue finality 

provision, as those terms are defined in 

10 CFR chapter I. These mandatory 

adjustments are non-discretionary, 

required by statute, and do not represent 

any change in position by the NRC with 

respect to the design, construction, or 

operation of a licensed facility. 

VII. Plain Writing 

The Plain Writing Act of 2010 (Pub. 

L. 111–274) requires Federal agencies to 

write documents in a clear, concise, and 

well-organized manner. The NRC has 

written this document to be consistent 

with the Plain Writing Act as well as the 

Presidential Memorandum, ‘‘Plain 

Language in Government Writing,’’ 

published June 10, 1998 (63 FR 31885). 

VIII. National Environmental Policy 

Act 

The NRC has determined that this 

final rule is the type of action described 

in § 51.22(c)(1). Therefore, neither an 

environmental impact statement nor 

environmental assessment has been 

prepared for this final rule. 

IX. Paperwork Reduction Act 

This final rule does not contain any 

new or amended collections of 

information subject to the Paperwork 

Reduction Act of 1995 (44 U.S.C. 3501 

et seq.). Existing collections of 

information were approved by the 

Office of Management and Budget 

(OMB), approval number 3150–0039. 

Public Protection Notification 

The NRC may not conduct or sponsor, 

and a person is not required to respond 

to, a collection of information unless the 

document requesting or requiring the 

collection displays a currently valid 

OMB control number. 

X. Congressional Review Act 

This final rule is a rule as defined in 

the Congressional Review Act (5 U.S.C. 

801–808). The Office of Management 

and Budget has found it to be a major 

rule as defined in the Congressional 

Review Act. As explained under Section 

III, ‘‘Rulemaking Procedure,’’ the NRC 

has found good cause that solicitation of 

public comment on this final rule is 

unnecessary. Therefore, consistent with 

5 U.S.C. 808(2), the NRC has determined 

that the effective date of this rule will 

be October 5, 2023, in lieu of the 

customary 60-day delay in effectiveness 

for ‘‘major rules’’ under the 

Congressional Review Act. 

List of Subjects in 10 CFR Part 140 

Criminal penalties, Extraordinary 

nuclear occurrence, Insurance, 

Intergovernmental relations, Nuclear 

materials, Nuclear power plants and 

reactors, Penalties, Reporting and 

recordkeeping requirements. 

For the reasons set out in the 

preamble and under the authority of the 

Atomic Energy Act of 1954, as amended; 

the Energy Reorganization Act of 1974, 

as amended; and 5 U.S.C. 552 and 553, 

the NRC is adopting the following 

amendment to 10 CFR part 140: 

PART 140—FINANCIAL PROTECTION 

REQUIREMENTS AND INDEMNITY 

AGREEMENTS 

■ 1. The authority citation for part 140 

continues to read as follows: 

Authority: Atomic Energy Act of 1954, 

secs. 161, 170, 223, 234 (42 U.S.C. 2201, 

2210, 2273, 2282); Energy Reorganization Act 

of 1974, secs. 201, 202 (42 U.S.C. 5841, 

5842); 44 U.S.C. 3504 note. 

§ 140.11 [Amended] 

■ 2. In § 140.11(a)(4), remove the 

number ‘‘$131,056,000’’ and add in its 

place the number ‘‘$158,026,000’’ and 

remove the number ‘‘$20,496,000’’ and 

add in its place the number 

‘‘$24,714,000’’. 

Dated: August 29, 2023. 

For the Nuclear Regulatory Commission. 

Catherine Haney, 

Acting Executive Director for Operations. 

[FR Doc. 2023–19009 Filed 9–1–23; 8:45 am] 

BILLING CODE 7590–01–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2023–1808; Project 

Identifier MCAI–2023–00906–E; Amendment 

39–22537; AD 2023–17–11] 

RIN 2120–AA64 

Airworthiness Directives; Rolls-Royce 

Deutschland Ltd & Co KG Engines 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Final rule; request for 

comments. 

SUMMARY: The FAA is adopting a new 

airworthiness directive (AD) for all 

Rolls-Royce Deutschland Ltd & Co KG 

(RRD) Model BR700–715A1–30, BR700– 

715B1–30, and BR700–715C1–30 

engines. This AD was prompted by 

reports of malformed scallop edge 

geometry and surface conditions at the 

front flange scallops of affected lowpressure compressor (LPC) booster 

rotors. This AD requires repetitive 

fluorescent penetrant inspections (FPIs) 


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of the front flange scallops of the LPC 

booster rotor for any cracks, 

replacement or repair of the LPC booster 

rotor if necessary and, as an optional 

terminating action to the repetitive FPIs, 

a visual inspection for malformed 

scallop edge geometry and malformed 

surface conditions, 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 September 

20, 2023. 

The Director of the Federal Register 

approved the incorporation by reference 

of a certain publication listed in this AD 

as of September 20, 2023. 

The FAA must receive comments on 

this AD by October 20, 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–2023–1808; 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 street address for 

Docket Operations is listed above. 

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. 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–2023–1808. 

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 data, views, or arguments about 

this final rule. Send your comments to 

an address listed under ADDRESSES. 

Include ‘‘Docket No. FAA–2023–1808; 

Project Identifier MCAI–2023–00906–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 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 

EASA, which is the Technical Agent 

for the Member States of the European 

Union, has issued EASA AD 2023–0152, 

dated July 25, 2023 (EASA AD 2023– 

0152) (also referred to after this as the 

MCAI), to correct an unsafe condition 

for all RRD Model BR700–715A1–30, 

BR700–715B1–30, and BR700–715C1– 

30 engines. The MCAI states that 

occurrences have been reported of 

finding malformed scallop edge 

geometry and surface conditions at the 

front flange of scallops of certain LPC 

booster rotors. To address this unsafe 

condition, the manufacturer published 

service information that specifies 

procedures for inspecting the front 

flange scallops of the LPC booster rotors 

with accept and reject criteria. 

Prior to the issuance of EASA AD 

2023–0152, the FAA issued a notice of 

proposed rulemaking (NPRM) to amend 

14 CFR part 39 by adding an AD that 

would apply to RRD Model BR700– 

715A1–30, BR700–715B1–30, and 

BR700–715C1–30 engines. The NPRM 

published in the Federal Register on 

June 14, 2023 (88 FR 38762). The NPRM 

was prompted by EASA AD 2022–0252, 

dated December 16, 2022 (later revised 

to EASA AD 2022–0252R1, dated April 

28, 2023 (EASA AD 2022–0252R1)). The 

NPRM proposed to require repetitive 

FPIs of the front flange scallops of the 

LPC booster rotor for any cracks, 

replacement or repair of the LPC booster 

rotor if necessary and, as an optional 

terminating action to the repetitive FPIs, 

a visual inspection for malformed 

scallop edge geometry and malformed 

surface conditions to prevent failure of 

the LPC booster rotor. However, since 

the NPRM was issued, the FAA has 

reviewed the MCAI which supersedes 

EASA AD 2022–0252R1 and includes 

both reduced compliance times for 

certain engines and extended 

compliance times for certain other 

engines. Therefore, the FAA has 

determined that it is necessary to 

withdraw the NPRM under a separate 

action; and instead issue this final rule 

to address the unsafe condition. 

For further information, you may 

examine the MCAI in the AD docket at 

regulations.gov under Docket No. FAA– 

2023–1808. 

Discussion of Notice of Proposed Rule 

Making 

Comments 

The FAA received comments from 

four commenters. Commenters included 

Hawaiian Airlines (Hawaiian), Delta Air 

Lines (Delta), The Boeing Company, and 

Air Line Pilots Association, 

International (ALPA). Boeing and ALPA 

supported the NPRM without change. 

However, comments from Hawaiian and 

Delta identified concerns with the 

NPRM. The FAA has determined that it 

is necessary to withdraw the NPRM and 

instead issue this final rule to address 

the unsafe condition. The following 

presents the comments received on the 


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60568 Federal Register / Vol. 88, No. 170 / Tuesday, September 5, 2023 / Rules and Regulations 

NPRM and the FAA’s response to each 

comment. 

Requests To Revise the NPRM 

Delta suggested that the instructions 

for the FPI referenced in EASA AD 

2022–0252 do not provide procedures 

for the application of non-aqueous 

aerosol developer (NAD). Additionally, 

Delta requested that the FAA include an 

exception to the AD to allow this NAD 

or industry equivalent for the FPI 

procedure. 

Delta pointed out that the 

manufacturer has published a revision 

to the service information that was 

referenced in EASA AD 2022–0252 and 

requested that the FAA include credit in 

the NPRM for actions accomplished 

using RRD Non-Modification Service 

Bulletin (NMSB) SB–BR700–72– 

A900738, Initial Issue, dated December 

15, 2022. Delta mentioned that the 

inspections specified in RRD NMSB SB– 

BR700–72–A900738, Initial Issue, dated 

December 15, 2022, are equivalent to 

those contained in RRD NMSB SB– 

BR700–72–A900738, Revision 1, dated 

July 11, 2023. The FAA infers that Delta 

is requesting that RRD NMSB SB– 

BR700–72–A900738, Revision 1, dated 

July 11, 2023, as the required service 

information for the actions specified in 

the NPRM. 

Hawaiian stated that the materials 

necessary to accomplish the required 

actions listed in the NPRM are obsolete 

or otherwise unavailable for use in the 

United States. Hawaiian requested that 

the FAA revise the NPRM to include 

suitable materials for accomplishing the 

required actions. 

After careful consideration of these 

comments, the FAA agrees to withdraw 

the NPRM. However, the FAA will 

accomplish the withdrawal of the 

NPRM as a separate action. The MCAI 

specified in this final rule refers to the 

revised service information, and both 

now adequately address the concerns 

Delta and Hawaiian. The FAA has 

updated this final rule to include the 

revised service information which also 

contains the change of materials 

necessary to support the required 

inspections. 

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 has determined to 

withdraw the NPRM. Instead of 

publishing the NPRM, the FAA has also 

determined that air safety requires 

adopting this final rule. Accordingly, 

the FAA is issuing this AD to address 

the unsafe condition on these products. 

Related Service Information Under 1 

CFR Part 51 

The FAA reviewed EASA AD 2023– 

0152, which specifies procedures for 

accomplishing repetitive FPIs (on-wing 

or in-shop) of the front flange scallops 

of the affected part and, if any cracks are 

detected, removing the engine from 

service and contacting the manufacturer 

for approved corrective actions. EASA 

AD 2023–0152 also specifies procedures 

for performing a visual inspection, 

taking photographs, and submitting 

photograph documentation of the LPC 

booster rotor front flange scallops for 

malformed scallop edge geometry and 

malformed surface conditions, 

including validation of the results from 

the manufacturer, as terminating action 

for the repetitive FPIs. 

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. 

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 AD after 

determining that the unsafe condition 

described previously is likely to exist or 

develop on other products of the same 

type design. 

AD Requirements 

This AD requires accomplishing the 

actions specified in the MCAI, except 

for any differences identified as 

exceptions in the regulatory text of this 

AD, and except as discussed under 

‘‘Differences Between this AD and the 

MCAI.’’ This AD requires sending 

certain inspection results, the Part C 

Accomplishment Form, and 

photographic evidence to the 

manufacturer if operators elect to 

perform the optional terminating action 

specified in Part C of the service 

information referenced in EASA AD 

2023–0152. 

Differences Between This AD and the 

MCAI 

Where paragraphs (2) and (3) of EASA 

AD 2023–0152 specify to contact RRD 

for approved corrective action(s) and 

accomplish those actions accordingly, 

this AD requires replacement or repair 

of the LPC booster rotor. 

Where paragraph (1) requires 

accomplishment of the initial inspection 

to be determined by certain flight 

missions and engine flight cycles (EFC), 

after the effective date of the EASA AD, 

but not later than August 31, 2023, this 

AD requires accomplishment of the 

initial inspection within 150 EFC after 

the effective date of this AD. 

Justification for Immediate Adoption 

and Determination of the Effective Date 

Section 553(b)(3)(B) of the 

Administrative Procedure Act (APA) (5 

U.S.C. 551 et seq.) authorizes agencies 

to dispense with notice and comment 

procedures for rules when the agency, 

for ‘‘good cause,’’ finds that those 

procedures are ‘‘impracticable, 

unnecessary, or contrary to the public 

interest.’’ Under this section, an agency, 

upon finding good cause, may issue a 

final rule without providing notice and 

seeking comment prior to issuance. 

Further, section 553(d) of the APA 

authorizes agencies to make rules 

effective in less than thirty days, upon 

a finding of good cause. 

An unsafe condition exists that 

requires the immediate adoption of this 

AD without providing an opportunity 

for public comments prior to adoption. 

The FAA has found that the risk to the 

flying public justifies forgoing notice 

and comment prior to adoption of this 

rule due to a reassessment performed by 

the manufacturer that determined an 

increased risk of a crack developing on 

the LPC booster. This unsafe condition 

may result in release of high-energy 

debris, with consequent engine in-flight 

shutdown, and reduced control of the 

airplane. Due to this increased risk, the 

FPI of the LPC booster for cracking must 

be accomplished within 150 flight 

cycles (which is equivalent to 30 days) 

after the effective date of this AD. 

Accordingly, notice and opportunity for 

prior public comment are impracticable 

and contrary to the public interest 

pursuant to 5 U.S.C. 553(b)(3)(B). 

In addition, the FAA finds that good 

cause exists pursuant to 5 U.S.C. 553(d) 

for making this amendment effective in 

less than 30 days, for the same reasons 

the FAA found good cause to forgo 

notice and comment. 

Regulatory Flexibility Act 

The requirements of the Regulatory 

Flexibility Act (RFA) do not apply when 

an agency finds good cause pursuant to 

5 U.S.C. 553 to adopt a rule without 

prior notice and comment. Because the 

FAA has determined that it has good 


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Federal Register / Vol. 88, No. 170 / Tuesday, September 5, 2023 / Rules and Regulations 60569 

cause to adopt this rule without prior 

notice and comment, RFA analysis is 

not required. 

Costs of Compliance 

The FAA estimates that this AD 

affects 148 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 

FPI front flange scallops of the LPC booster 

rotor.

5 work-hours × $85 per hour = $425 ............. $0 $425 $62,900 

The FAA estimates the following 

costs to do any necessary replacement, 

repair, or visual inspection that would 

be required based on the results of the 

inspection. The agency has no way of 

determining the number of engines that 

might need this replacement, repair, or 

visual inspection: 

ON-CONDITION COSTS

Action Labor cost Parts cost Cost per 

product 

Replace the LPC booster rotor .................................... 10 work-hours × $85 per hour = $850 ......................... $461,897 $462,747 

Repair the LPC booster rotor ....................................... 10 work-hours × $85 per hour = $850 ......................... 185,000 185,850 

Visual inspection and photograph documentation of 

the LPC booster rotor front flange scallops.

7 work-hours × $85 per hour = $595 ........................... 0 595 

Send Accomplishment Form (Part C) and photographs to RRD.1 work-hours × $85 per hour = $85 ............................. 0 85 

Paperwork Reduction Act 

A federal agency may not conduct or 

sponsor, and a person is not required to 

respond to, nor shall a person be subject 

to a penalty for failure to comply with 

a collection of information subject to the 

requirements of the Paperwork 

Reduction Act unless that collection of 

information displays a currently valid 

OMB Control Number. The OMB 

Control Number for this information 

collection is 2120–0056. Public 

reporting for this collection of 

information is estimated to take 

approximately 1 hour per response, 

including the time for reviewing 

instructions, searching existing data 

sources, gathering and maintaining the 

data needed, and completing and 

reviewing the collection of information. 

All responses to this collection of 

information are mandatory. Send 

comments regarding this burden 

estimate or any other aspect of this 

collection of information, including 

suggestions for reducing this burden, to: 

Information Collection Clearance 

Officer, Federal Aviation 

Administration, 10101 Hillwood 

Parkway, Fort Worth, TX 76177–1524. 

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 

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, 

and 

(2) Will not affect intrastate aviation 

in Alaska. 

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 adding 

the following new airworthiness 

directive: 

2023–17–11 Rolls-Royce Deutschland Ltd & 

Co KG: Amendment 39–22537; Docket 

No. FAA–2023–1808; Project Identifier 

MCAI–2023–00906–E. 

(a) Effective Date 

This airworthiness directive (AD) is 

effective September 20, 2023. 

(b) Affected ADs 

None. 

(c) Applicability 

This AD applies to Rolls-Royce 

Deutschland Ltd & Co KG (RRD) Model 

BR700–715A1–30, BR700–715B1–30, and 

BR700–715C1–30 engines. 


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60570 Federal Register / Vol. 88, No. 170 / Tuesday, September 5, 2023 / Rules and Regulations 

(d) Subject 

Joint Aircraft System Component (JASC) 

Code 7230, Turbine Engine Compressor 

Section. 

(e) Unsafe Condition 

This AD was prompted by reports of 

malformed scallop edge geometry and surface 

conditions at the front flange scallops of 

affected low-pressure compressor (LPC) 

booster rotors. The FAA is issuing this AD to 

prevent failure of the LPC booster rotor. The 

unsafe condition, if not addressed, could 

result in release of high-energy debris, with 

consequent engine in-flight 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 2023– 

0152, dated July 25, 2023 (EASA AD 2023– 

0152). 

(h) Exceptions to EASA AD 2023–0152 

(1) Where EASA AD 2023–0152 requires 

compliance from its effective date, this AD 

requires using the effective date of this AD. 

(2) This AD does not adopt the compliance 

times specified for the initial fluorescent 

penetrant inspection (FPI) in paragraph (1) 

and Table 1 of EASA AD 2023–0152. Instead, 

this AD requires the initial FPI within 150 

engine flight cycles after the effective date of 

this AD. 

(3) Where paragraph (1) of EASA AD 2023– 

0152 specifies ‘‘in accordance with the 

instructions of EM task 72–38–12–200–801’’ 

this AD requires replacing those words with 

‘‘in accordance with the instructions of EM 

task 72–38–18–200–801 or equivalent FAA 

approved procedures.’’ 

(4) Where paragraphs (2) and (3) of EASA 

AD 2023–0152 specify to contact RRD for 

approved corrective action(s) and accomplish 

those actions accordingly, this AD requires 

replacement of the LPC booster rotor. In lieu 

of replacement of the affected LPC booster 

rotor, operators may repair the affected LPC 

booster rotor using a method approved by the 

Manager, International Validation Branch, 

FAA; or EASA; or RRD’s EASA Design 

Organization Approval (DOA). If approved by 

the DOA, the approval must include the 

DOA-authorized signature. 

(5) Where the service information 

referenced in EASA AD 2023–0152 specifies 

to reject the engine if a crack is found, this 

AD requires replacement or repair of the LPC 

booster rotor. 

(6) This AD does not adopt the Remarks 

paragraph of EASA AD 2023–0152. 

(i) Reporting Requirement 

Although the service information 

referenced in EASA AD 2023–0152 specifies 

to submit the Accomplishment Forms, Parts 

A and B, to the manufacturer, this AD does 

not include that requirement. If operators 

elect to perform the optional terminating 

action specified in Part C of the service 

information referenced in EASA AD 2023– 

0152, this AD requires submission of the Part 

C Accomplishment Form and photographic 

information to the manufacturer. 

(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 International Validation 

Branch, 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 

AD 2023–0152, dated July 25, 2023. 

(ii) [Reserved] 

(3) For EASA AD 2022–0252, contact 

EASA, Konrad-Adenauer-Ufer 3, 50668 

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

email: ADs@easa.europa.eu. You may find 

EASA AD 2022–0252 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 August 25, 2023. 

Victor Wicklund, 

Deputy Director, Compliance & Airworthiness 

Division, Aircraft Certification Service. 

[FR Doc. 2023–19164 Filed 8–31–23; 4:15 pm] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2023–1809; Project 

Identifier MCAI–2023–00945–E; Amendment 

39–22539; AD 2023–17–13] 

RIN 2120–AA64 

Airworthiness Directives; BRP-Rotax 

GmbH & Co KG (Formerly BRP– 

POWERTRAIN GMBH & CO KG and 

Bombardier-Rotax GmbH) Engines and 

Various Aircraft 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Final rule; request for 

comments. 

SUMMARY: The FAA is adopting a new 

airworthiness directive (AD) for all BRPRotax GmbH & Co KG (Rotax) Model 

912 F2, 912 F3, 912 F4, 912 iSc2 Sport, 

912 iSc3 Sport, 912 S2, 912 S3, 912 S4, 

914 F2, 914 F3, and 914 F4 engines; and 

Model 912 A, 912 A2, and 912 A3 

engines included as part of the type 

certificated aircraft type design for 

various aircraft. This AD was prompted 

by a report of surface abnormalities on 

the affected propeller shaft, which could 

lead to increased wear of the propeller 

shaft bearings. This AD requires initial 

and repetitive inspections of the 

magnetic plug for the accumulation of 

metal chips to assess the condition of 

the propeller gearbox for wear of the 

propeller shaft bearings and removal of 

the affected propeller shaft from service 

and replacement with a part eligible for 

installation as a terminating action 

either immediately or at a certain time 

depending on inspection findings. This 

AD also prohibits installation of the 

affected propeller shaft on any engine. 

The FAA is issuing this AD to address 

the unsafe condition on these products. 

DATES: This AD is effective September 

20, 2023. 

The Director of the Federal Register 

approved the incorporation by reference 

of certain publications listed in this AD 

as of September 20, 2023. 

The FAA must receive comments on 

this AD by October 20, 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 


ddrumheller on DSK120RN23PROD with RULES1