Federal Register / Vol. 87, No. 108 / Monday, June 6, 2022 / Proposed Rules 34221 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2022–0515; Project 

Identifier AD–2022–00287–E] 

RIN 2120–AA64 

Airworthiness Directives; CFM 

International, S.A. Turbofan Engines 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Notice of proposed rulemaking 

(NPRM). 

SUMMARY: The FAA proposes to adopt a 

new airworthiness directive (AD) for 

certain CFM International, S.A. (CFM) 

LEAP–1B model turbofan engines. This 

proposed AD was prompted by multiple 

commanded in-flight shutdowns (IFSDs) 

due to inner radial drive shaft (RDS) 

failure. This proposed AD would 

require initial and repetitive inspections 

of the transfer gearbox (TGB) scavenge 

screens and, depending on the results of 

the inspections, replacement or rework 

of the affected inner RDS. As a 

mandatory terminating action to the 

initial and repetitive inspections of the 

TGB scavenge screens, this proposed 

AD would require replacement or 

rework of the affected inner RDS. This 

proposed AD would also prohibit the 

installation of an engine with an 

affected inner RDS onto an airplane that 

already has one engine with an affected 

inner RDS installed. The FAA is 

proposing this AD to address the unsafe 

condition on these products. 

DATES: The FAA must receive comments 

on this proposed AD by July 21, 2022. 

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 

https://www.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. 

For service information identified in 

this NPRM, contact CFM International, 

S.A., Aviation Operations Center, 1 

Neumann Way, M/D Room 285, 

Cincinnati, OH 45125; phone: (877) 

432–3272; email: fleetsupport@ge.com. 

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. 

Examining the AD Docket 

You may examine the AD docket at 

https://www.regulations.gov by 

searching for and locating Docket No. 

FAA–2022–0515; 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, any comments received, and 

other information. The street address for 

Docket Operations is listed above. 

FOR FURTHER INFORMATION CONTACT: 

Mehdi Lamnyi, Aviation Safety 

Engineer, ECO Branch, FAA, 1200 

District Avenue, Burlington, MA 01803; 

phone: (781) 238–7743; email: 

Mehdi.Lamnyi@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–2022–0515; Project Identifier AD– 

2022–00287–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 https://

www.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 Mehdi Lamnyi, 

Aviation Safety Engineer, ECO Branch, 

FAA, 1200 District Avenue, Burlington, 

MA 01803. 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 received reports of multiple 

IFSDs on CFM LEAP–1B21, LEAP– 

1B23, LEAP–1B25, LEAP–1B27, LEAP– 

1B28, LEAP–1B28B1, LEAP–1B28B2, 

LEAP–1B28B2C, LEAP–1B28B3, LEAP– 

1B28BBJ1, and LEAP–1B28BBJ2 (LEAP– 

1B) model turbofan engines beginning 

in August 2018. The manufacturer’s 

investigations determined that some of 

these IFSD events were the result of 

inadequate oil flow to the RDS bearing, 

which caused the RDS bearing and RDS 

bearing cage to fail. The FAA issued AD 

2019–12–01, Amendment 39–19656 (84 

FR 28202, June 18, 2019), which 

required initial and repetitive 

inspections of the TGB scavenge screens 

and, depending on the results of the 

inspection, possible removal of the 

engine from service. 

After the FAA issued AD 2019–12–01, 

further investigation by the 

manufacturer identified an additional 

contributing factor to the RDS bearing 

failures. The manufacturer revised the 

service information to include a 

repetitive TGB screen inspection until 

the RDS accumulates 1,500 flight hours 

(FHs) since new and borescope 

inspections of the RDS bearing at 1,500 

FHs since new and 6,000 FHs since 

new. The FAA superseded AD 2019– 

12–01 by issuing AD 2020–06–01, 

Amendment 39–21103 (85 FR 14413, 

March 12, 2020), which requires 

revision to the airworthiness limitations 

section (ALS) of the applicable engine 

shop manual to incorporate the new 

inspections. 

Since the FAA issued AD 2020–06– 

01, the FAA received further reports of 

commanded IFSDs due to inner RDS 

failure. The manufacturer initiated an 

investigation and identified a 

subpopulation of inner RDS susceptible 

to rivet fatigue failure occurring after the 

inspection thresholds required by the 

ALS revision in AD 2020–06–01. This 

condition, if not addressed, could result 

in failure of one or more engines, loss 

of thrust control, and loss of the 

airplane. 


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34222 Federal Register / Vol. 87, No. 108 / Monday, June 6, 2022 / Proposed Rules 

FAA’s Determination 

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. 

Related Service Information Under 1 

CFR Part 51 

The FAA reviewed CFM Service 

Bulletin (SB) LEAP–1B–72–00–0365– 

01A–930A–D, Issue 003–00, dated April 

26, 2022 (CFM LEAP–1B–72–00–0365– 

01A–930A–D). This SB identifies the 

affected serial numbers of the inner RDS 

susceptible to rivet fatigue failure and 

specifies procedures for performing 

inspections of TGB1 and TGB2 scavenge 

screens. This SB also specifies 

procedures for accomplishing 

applicable corrective actions if metallic 

particles are found. The FAA also 

reviewed CFM SB LEAP–1B–72–00– 

0258–01A–930A–C, Issue 002, dated 

September 15, 2020. This SB specifies 

procedures for replacement or rework of 

the inner RDS. 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. 

Proposed AD Requirements in This 

NPRM 

This proposed AD would require 

initial and repetitive inspections of the 

TGB1 and TGB2 scavenge screens and, 

depending on the results of the 

inspections, replacement or rework of 

the affected inner RDS. As a mandatory 

terminating action to the initial and 

repetitive inspections of the TGB1 and 

TGB2 scavenge screens, this proposed 

AD would require replacement or 

rework of the affected inner RDS. This 

proposed AD would also prohibit the 

installation of an engine with an 

affected inner RDS onto an airplane that 

already has one engine with an affected 

inner RDS installed. 

Differences Between This Proposed AD 

and the Service Information 

The Accomplishment Instructions, 

paragraph 5.A.(3), of CFM LEAP–1B– 

72–00–0365–01A–930A–D specifies 

removing the engine if certain 

conditions exist, whereas this proposed 

AD would require replacement or 

rework of the affected inner RDS if 

certain conditions exist. 

Costs of Compliance 

The FAA estimates that this AD, if 

adopted as proposed, would affect 34 

engines installed on airplanes of U.S. 

registry. 

The FAA estimates the following 

costs to comply with this proposed AD: 

ESTIMATED COSTS

Action Labor cost Parts cost Cost per 

product 

Cost on U.S. 

operators 

Inspect TGB1 and TGB 2 scavenge screens 1 work-hour × $85 per hour = $85 ................. $0 $85 $2,890 

For either replacement or rework of 

the inner RDS, depending on the option 

selected by the operator to comply with 

this AD, the FAA estimates the 

following costs: 

Action Labor cost Parts cost Cost per 

product 

Replace inner RDS ..................................... 600 work-hours × $85 per hour = $51,000 ................................... $60,000 $111,000 

Rework inner RDS ...................................... 600 work-hours × $85 per hour = $51,000 ................................... 54,000 105,000 

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 

13132. This proposed AD would not 

have a substantial direct effect on the 

States, on the relationship between the 

national government and the States, or 

on the distribution of power and 

responsibilities among the various 

levels of government. 

For the reasons discussed above, I 

certify this proposed regulation: 

(1) Is not a ‘‘significant regulatory 

action’’ under Executive Order 12866, 

(2) Would not affect intrastate 

aviation in Alaska, and 

(3) Would not have a significant 

economic impact, positive or negative, 

on a substantial number of small entities 

under the criteria of the Regulatory 

Flexibility Act. 

List of Subjects in 14 CFR Part 39 

Air transportation, Aircraft, Aviation 

safety, Incorporation by reference, 

Safety. 

The Proposed Amendment 

Accordingly, under the authority 

delegated to me by the Administrator, 

the FAA proposes to amend 14 CFR part 

39 as follows: 

PART 39—AIRWORTHINESS 

DIRECTIVES 

■ 1. The authority citation for part 39 

continues to read as follows: 

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

§ 39.13 [Amended] 

■ 2. The FAA amends § 39.13 by adding 

the following new airworthiness 

directive: 

CFM International, S.A.: Docket No. FAA– 

2022–0515; Project Identifier AD–2022– 

00287–E. 


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Federal Register / Vol. 87, No. 108 / Monday, June 6, 2022 / Proposed Rules 34223 

(a) Comments Due Date 

The FAA must receive comments on this 

airworthiness directive (AD) by July 21, 2022. 

(b) Affected ADs 

None. 

(c) Applicability 

This AD applies to CFM International, S.A. 

(CFM) LEAP–1B21, LEAP–1B23, LEAP– 

1B25, LEAP–1B27, LEAP–1B28, LEAP– 

1B28B1, LEAP–1B28B2, LEAP–1B28B2C, 

LEAP–1B28B3, LEAP–1B28BBJ1, and LEAP– 

1B28BBJ2 model turbofan engines with an 

installed inner radial drive shaft (RDS) with 

a serial number listed in Additional 

Information, paragraph 6.A., Table 1, of CFM 

Service Bulletin (SB) LEAP–1B–72–00–0365– 

01A–930A–D, Issue 003–00, dated April 26, 

2022 (CFM LEAP–1B–72–00–0365–01A– 

930A–D). 

(d) Subject 

Joint Aircraft System Component (JASC) 

Code 7260, Turbine Engine Accessory Drive. 

(e) Unsafe Condition 

This AD was prompted by multiple 

commanded in-flight shutdowns (IFSDs) due 

to inner RDS failure. The FAA is issuing this 

AD to prevent failure of the inner RDS and 

subsequent IFSDs. The unsafe condition, if 

not addressed, 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 

(1) Before exceeding 50 flight hours (FHs) 

after the effective date of this AD, and 

thereafter at intervals not to exceed 50 FHs 

from the previous inspection, inspect the 

transfer gearbox (TGB) TGB1 and TGB2 

scavenge screens in accordance with the 

Accomplishment Instructions, paragraph 

5.A.(1), of CFM LEAP–1B–72–00–0365–01A– 

930A–D. 

(2) If, during any inspection required by 

paragraph (g)(1) of this AD, any metallic 

particles are found, before further flight, 

perform the actions in the Accomplishment 

Instructions, paragraphs 5.A.(2) and (3), of 

CFM LEAP–1B–72–00–0365–01A–930A–D. 

Where paragraph 5.A.(3)(b) of CFM LEAP– 

1B–72–00–0365–01A–930A–D specifies to 

remove the engine, this AD instead requires 

replacement or rework of the inner RDS in 

accordance with the Accomplishment 

Instructions, paragraph 5.A., of CFM SB 

LEAP–1B–72–00–0258–01A–930A–C Issue 

002, dated September 15, 2020 (CFM SB 

LEAP–1B–72–00–0258–01A–930A–C). 

(h) Mandatory Terminating Action 

As a mandatory terminating action to the 

initial and repetitive inspections of the TGB1 

and TGB2 scavenge screens required by 

paragraph (g)(1) of this AD, at the next piecepart exposure after the effective date of this 

AD, replace or rework the inner RDS in 

accordance with the Accomplishment 

Instructions, paragraph 5.A., of CFM SB 

LEAP–1B–72–00–0258–01A–930A–C. 

(i) Installation Prohibition 

After the effective date of this AD, do not 

install an engine with an affected inner RDS 

onto an airplane that already has one engine 

with an affected inner RDS installed. 

(j) Definitions 

For the purpose of this AD, ‘‘piece-part 

exposure’’ is when the fan frame shroud is 

separated from the fan hub. 

(k) Alternative Methods of Compliance 

(AMOCs) 

(1) The Manager, ECO 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 certification office, 

send it to the attention of the person 

identified in paragraph (l)(1) 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. 

(l) Related Information 

(1) For more information about this AD, 

contact Mehdi Lamnyi, Aviation Safety 

Engineer, ECO Branch, FAA, 1200 District 

Avenue, Burlington, MA 01803; phone: (781) 

238–7743; email: Mehdi.Lamnyi@faa.gov. 

(2) For service information identified in 

this AD, contact CFM International, S.A., 

Aviation Operations Center, 1 Neumann 

Way, M/D Room 285, Cincinnati, OH 45125; 

phone: (877) 432–3272; email: fleetsupport@

ge.com. You may view this referenced 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. 

Issued on May 5, 2022. 

Lance T. Gant, 

Director, Compliance & Airworthiness 

Division, Aircraft Certification Service. 

[FR Doc. 2022–11897 Filed 6–3–22; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF THE TREASURY 

Internal Revenue Service 

26 CFR Part 1 

[REG–122770–18] 

RIN 1545–BP00 

Use of Actuarial Tables in Valuing 

Annuities, Interests for Life or a Term 

of Years, and Remainder or 

Reversionary Interests; Correction 

AGENCY: Internal Revenue Service (IRS), 

Treasury. 

ACTION: Correction to a notice of 

proposed rulemaking. 

SUMMARY: This document contains 

corrections to a notice of proposed 

rulemaking (REG–122770–18) that was 

published in the Federal Register on 

Thursday, May 5, 2022. The proposed 

rulemaking proposed regulations 

relating to the use of actuarial tables in 

valuing annuities, interests for life or a 

term of years, and remainder or 

reversionary interests. 

DATES: Written or electronic comments 

and requests for a public hearing are 

still being accepted and must be 

received by July 5, 2022. 

ADDRESSES: Commenters are strongly 

encouraged to submit public comments 

electronically. Submit electronic 

submissions via the Federal 

eRulemaking Portal at 

www.regulations.gov (indicate IRS and 

REG–122770–18) by following the 

online instructions for submitting 

comments. Once submitted to the 

Federal eRulemaking Portal, comments 

cannot be edited or withdrawn. The IRS 

expects to have limited personnel 

available to process public comments 

that are submitted on paper through 

mail. Until further notice, any 

comments submitted on paper will be 

considered to the extent practicable. 

The Department of the Treasury 

(Treasury Department) and the IRS will 

publish for public availability any 

comment submitted electronically, and 

to the extent practicable on paper, to its 

public docket. Send paper submissions 

to: CC:PA:LPD:PR (REG–122770–18), 

Room 5203, Internal Revenue Service, 

P.O. Box 7604, Ben Franklin Station, 

Washington, DC 20044. 

FOR FURTHER INFORMATION CONTACT: 

Concerning the proposed regulations, 

Mayer R. Samuels of the Office of 

Associate Chief Counsel (Passthroughs 

and Special Industries), (202) 317–6859; 

concerning the submission of comments 

or requests for a public hearing, Regina 

L. Johnson, (202) 317–5177, (not tollfree numbers). 

SUPPLEMENTARY INFORMATION: 

Background 

The notice of proposed rulemaking 

that is the subject of this document is 

under section 7520 of the Internal 

Revenue Code. 

Need for Correction 

As published, the notice of proposed 

rulemaking (REG–122770–18) contains 

errors that need to be corrected. 

Correction of Publication 

Accordingly, the notice of proposed 

rulemaking (REG–122770–18), which 

was the subject of FR Doc. 2022–02303, 


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