This section of the FEDERAL REGISTER

contains notices to the public of the proposed

issuance of rules and regulations. The

purpose of these notices is to give interested

persons an opportunity to participate in the

rule making prior to the adoption of the final

rules.

Proposed Rules Federal Register

60896 

Vol. 88, No. 171 

Wednesday, September 6, 2023 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2023–1811; Project 

Identifier MCAI–2023–00146–E] 

RIN 2120–AA64 

Airworthiness Directives; GE Aviation 

Czech s.r.o. (Type Certificate 

Previously Held by WALTER Engines 

a.s., Walter a.s., and MOTORLET a.s.) 

Engines 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Notice of proposed rulemaking 

(NPRM). 

SUMMARY: The FAA proposes to 

supersede Airworthiness Directive (AD) 

2023–01–07, which applies to all GE 

Aviation Czech s.r.o. (GEAC) (type 

certificate previously held by WALTER 

Engines a.s., Walter a.s., and 

MOTORLET a.s.) Model H75–100, H75– 

200, H80, H80–100, H80–200, H85–100, 

and H85–200 engines. AD 2023–01–07 

requires revising the airworthiness 

limitations section (ALS) of the existing 

engine maintenance manual (EMM) and 

the operator’s existing approved 

maintenance or inspection program, as 

applicable, to incorporate updated 

coefficients and recalculate the cycles 

accumulated on critical parts. Since the 

FAA issued AD 2023–01–07, the 

manufacturer revised the ALS of the 

EMM to introduce new and more 

restrictive airworthiness limitations and 

associated thresholds and intervals for 

life-limited parts, which prompted this 

proposed AD. This proposed AD would 

require revising the ALS of the existing 

EMM and the operator’s existing 

approved engine maintenance or 

inspection program, as applicable, to 

incorporate new and 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 proposing this AD to 

address the unsafe condition on these 

products. 

DATES: The FAA must receive comments 

on this NPRM by October 23, 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–2023–1811; or in person at 

Docket Operations between 9 a.m. and 

5 p.m., Monday through Friday, except 

Federal holidays. The AD docket 

contains this NPRM, the mandatory 

continuing airworthiness information 

(MCAI), any comments received, and 

other information. The street address for 

Docket Operations is listed above. 

Material Incorporated by Reference: 

• For service information that is 

proposed for IBR in this NPRM, 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. It is also available at 

regulations.gov under Docket No. FAA– 

2023–1811. 

• You may view this service 

information at the FAA, Airworthiness 

Products Section, Operational Safety 

Branch, 1200 District Avenue, 

Burlington, MA 01803. For information 

on the availability of this material at the 

FAA, call (817) 222–5110. 

FOR FURTHER INFORMATION CONTACT: 

Barbara Caufield, Aviation Safety 

Engineer, FAA, 1600 Stewart Avenue, 

Suite 410, Westbury, NY 11590; phone: 

(781) 238–7146; email: 

barbara.caufield@faa.gov. 

SUPPLEMENTARY INFORMATION: 

Comments Invited 

The FAA invites you to send any 

written relevant data, views, or 

arguments about this proposal. Send 

your comments to an address listed 

under ADDRESSES. Include ‘‘Docket No. 

FAA–2023–1811; Project Identifier 

MCAI–2023–00146–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 the proposal 

because of those comments. 

Except for Confidential Business 

Information (CBI) as described in the 

following paragraph, and other 

information as described in 14 CFR 

11.35, the FAA will post all comments 

received, without change, to 

regulations.gov, including any personal 

information you provide. The agency 

will also post a report summarizing each 

substantive verbal contact received 

about this NPRM. 

Confidential Business Information 

CBI is commercial or financial 

information that is both customarily and 

actually treated as private by its owner. 

Under the Freedom of Information Act 

(FOIA) (5 U.S.C. 552), CBI is exempt 

from public disclosure. If your 

comments responsive to this NPRM 

contain commercial or financial 

information that is customarily treated 

as private, that you actually treat as 

private, and that is relevant or 

responsive to this NPRM, it is important 

that you clearly designate the submitted 

comments as CBI. Please mark each 

page of your submission containing CBI 

as ‘‘PROPIN.’’ The FAA will treat such 

marked submissions as confidential 

under the FOIA, and they will not be 

placed in the public docket of this 

NPRM. Submissions containing CBI 

should be sent to Barbara Caufield, 

Aviation Safety Engineer, FAA, 1600 

Stewart Avenue, Suite 410, Westbury, 

NY 11590. Any commentary that the 

FAA receives which is not specifically 

designated as CBI will be placed in the 

public docket for this rulemaking. 

Background 

The FAA issued AD 2023–01–07, 

Amendment 39–22301 (88 FR 7355, 

February 3, 2023; corrected February 16, 

2023 (88 FR 10013)) (AD 2023–01–07), 

for all GEAC Model H75–100, H75–200, 

H80, H80–100, H80–200, H85–100, and 

H85–200 engines. AD 2023–01–07 was 

prompted by an MCAI originated by 


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Federal Register / Vol. 88, No. 171 / Wednesday, September 6, 2023 / Proposed Rules 60897 

EASA, which is the Technical Agent for 

the Member States of the European 

Union. EASA issued EASA AD 2022– 

0008, dated January 19, 2022 (EASA AD 

2022–0008), to address an unsafe 

condition identified as failure of the 

engine. EASA AD 2022–0008 stated that 

the airworthiness limitations for H 

series engine models have been 

identified as mandatory for continued 

airworthiness, and that failure to 

accomplish these instructions could 

result in an unsafe condition. EASA AD 

2022–0008 also explained that the 

manufacturer published a revised ALS 

to introduce updated coefficients for the 

calculation of the cyclic life and safe life 

for the main shaft. 

AD 2023–01–07 requires revising the 

ALS of the existing EMM and the 

operator’s existing approved 

maintenance or inspection program, as 

applicable, to incorporate updated 

coefficients and recalculate the cycles 

accumulated on critical parts. The FAA 

issued AD 2023–01–07 to prevent 

failure of the engine. 

Actions Since AD 2023–01–07 Was 

Issued 

Since the FAA issued AD 2023–01– 

07, EASA superseded EASA AD 2022– 

0008 and issued EASA AD 2023–0021, 

dated January 23, 2023 (EASA AD 

2023–0021) (also referred to after this as 

the MCAI). The MCAI states that the 

manufacturer revised the ALS to 

introduce new and more restrictive 

instructions and associated thresholds 

and intervals for life-limited parts. The 

MCAI also states that GEAC published 

an Alert Service Bulletin, ASB–H75–72– 

10–00–0062, ASB–H80–72–10–00–0107, 

ASB–H85–72–10–00–0051, ASB– 

M601F–72–10–00–0070, ASB–M601E– 

72–10–00–0120, ASB–M601D–72–10– 

00–0087 and ASB–M601Z–72–10–00– 

0069; Revision 1, dated January 20, 

2023, published as a single document, 

which provides instructions to 

determine the accumulated life of 

certain propeller shafts. 

You may examine the MCAI in the 

AD docket at regulations.gov under 

Docket No. FAA–2023–1811. 

Related Service Information Under 1 

CFR Part 51 

The FAA reviewed EASA AD 2023– 

0021, which specifies procedures for 

operators to revise the ALS of the 

existing EMM and the operator’s 

existing approved engine maintenance 

or inspection program, as applicable, to 

incorporate new and more restrictive 

instructions and associated thresholds 

and intervals for life-limited parts, as 

applicable to each engine model. 

This service information is reasonably 

available because the interested parties 

have access to it through their normal 

course of business or by the means 

identified in ADDRESSES. 

FAA’s Determination 

These products have been approved 

by the aviation authority of another 

country and are approved for operation 

in the United States. Pursuant to the 

FAA’s bilateral agreement with this 

State of Design Authority, it has notified 

the FAA of the unsafe condition 

described in the MCAI referenced 

above. The FAA is issuing this NPRM 

after determining that the unsafe 

condition described previously is likely 

to exist or develop on other products of 

the same type design. 

Proposed AD Requirements in This 

NPRM 

This proposed AD would require 

accomplishing the actions specified in 

the MCAI described previously, except 

for any differences identified as 

exceptions in the regulatory text of this 

proposed AD and as discussed under 

‘‘Differences Between this Proposed AD 

and the MCAI.’’ The owner/operator 

(pilot) holding at least a private pilot 

certificate may revise the ALS of the 

existing EMM and must enter 

compliance with the applicable 

paragraph of this proposed AD into the 

engine maintenance records in 

accordance with 14 CFR 43.9(a) and 

91.417(a)(2)(v). The pilot may perform 

this action because it only involves 

revising the pilot’s manual. This action 

could be performed equally well by a 

pilot or a mechanic. This is an 

exception to the FAA’s standard 

maintenance regulations. 

Explanation of Required Compliance 

Information 

In the FAA’s ongoing efforts to 

improve the efficiency of the AD 

process, the FAA developed a process to 

use some civil aviation authority (CAA) 

ADs as the primary source of 

information for compliance with 

requirements for corresponding FAA 

ADs. The FAA has since coordinated 

with other manufacturers and CAAs to 

use this process. As a result, the FAA 

proposes to incorporate by reference 

EASA AD 2023–0021 in the FAA final 

rule. This proposed AD would, 

therefore, require compliance with 

EASA AD 2023–0021 in its entirety 

through that incorporation, except for 

any differences identified as exceptions 

in the regulatory text of this proposed 

AD. Using common terms that are the 

same as the heading of a particular 

section in the EASA AD does not mean 

that operators need comply only with 

that section. For example, where the AD 

requirement refers to ‘‘all required 

actions within the compliance times,’’ 

compliance with this AD requirement is 

not limited to the section titled 

‘‘Required Action(s) and Compliance 

Time(s)’’ in EASA AD 2023–0021. 

Service information required by the 

EASA AD for compliance will be 

available at regulations.gov by searching 

for and locating Docket No. FAA–2023– 

1811 after the FAA final rule is 

published. 

Differences Between This Proposed AD 

and the MCAI 

Where EASA AD 2023–0021 defines 

the AMP as the approved Aircraft 

Maintenance Programme containing the 

tasks on the basis of which the 

scheduled maintenance is conducted to 

ensure the continuing airworthiness of 

each operated engine, this proposed AD 

defines the AMP as the aircraft 

maintenance program containing the 

tasks on the basis of which the 

scheduled maintenance is conducted to 

ensure the continuing airworthiness of 

each operated airplane. 

Where EASA AD 2023–0021 defines 

the ALS as the Airworthiness 

Limitations Section of the GEAC EMM 

No. 0983402 Revision 25, dated 

November 21, 2022, this proposed AD 

defines the ALS as the airworthiness 

limitations section of the GEAC EMM 

No. 0983402 Revision 26, dated 

February 1, 2023. The ALS in Revision 

26 of the EMM is unchanged from 

Revision 25 of the EMM. 

Where paragraph (3) of EASA AD 

2023–0021 specifies revising the 

approved Aircraft Maintenance 

Programme within 12 months after the 

effective date of EASA AD 2023–0021, 

this proposed AD would require 

revising the ALS of the existing 

approved engine maintenance or 

inspection program, as applicable, 

within 90 days after the effective date of 

this AD. 

This proposed AD would not require 

compliance with paragraphs (1), (2), (4), 

and (5) of EASA AD 2023–0021. 

Costs of Compliance 

The FAA estimates that this AD, if 

adopted as proposed, would affect 33 

engines installed on airplanes of U.S. 

registry. 

The FAA estimates the following 

costs to comply with this proposed AD: 


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60898 Federal Register / Vol. 88, No. 171 / Wednesday, September 6, 2023 / Proposed Rules 

ESTIMATED COSTS

Action Labor cost Parts cost Cost per 

product 

Cost on U.S. 

operators 

Revise the ALS ............................................... 1 work-hour × $85 per hour = $85 ................. $0 $85 $2,805 

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 that the 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: 

■ a. Removing Airworthiness Directive 

2023–01–07, Amendment 39–22301 (88 

FR 7355, February 3, 2023; corrected 

February 16, 2023 (88 FR 10013)); and 

■ b. Adding the following new 

airworthiness directive: 

GE Aviation Czech s.r.o. (Type Certificate 

Previously held by WALTER Engines 

a.s., Walter a.s., and MOTORLET a.s.): 

Docket No. FAA–2023–1811; Project 

Identifier MCAI–2023–00146–E. 

(a) Comments Due Date 

The FAA must receive comments on this 

airworthiness directive (AD) by October 23, 

2023. 

(b) Affected ADs 

This AD replaces AD 2023–01–07, 

Amendment 39–22301 (88 FR 7355, February 

3, 2023; corrected February 16, 2023 (88 FR 

10013)). 

(c) Applicability 

This AD applies to GE Aviation Czech 

s.r.o. (Type Certificate Previously held by 

WALTER Engines a.s., Walter a.s., and 

MOTORLET a.s.) Model H75–100, H75–200, 

H80, H80–100, H80–200, H85–100, and H85– 

200 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 airworthiness 

limitations section (ALS) of the existing 

engine maintenance manual (EMM) to 

introduce new and more restrictive 

airworthiness limitations and associated 

thresholds and intervals for life-limited parts. 

The FAA is issuing this AD to prevent failure 

of the engine. The unsafe condition, if not 

addressed, could result in uncontained 

release of a critical part, damage to the 

engine, and damage to the airplane. 

(f) Compliance 

Comply with this AD within the 

compliance times specified, unless already 

done. 

(g) Required Actions 

(1) 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 2023–0021, dated 

January 23, 2023 (EASA AD 2023–0021). 

(2) The action required by paragraph (g)(1) 

of this AD may be performed by the owner/ 

operator (pilot) holding at least a private pilot 

certificate and must be entered into the 

aircraft records showing compliance with 

this AD in accordance with 14 CFR 43.9(a) 

and 91.417(a)(2)(v). The record must be 

maintained as required by 14 CFR 91.417, 

121.380, or 135.439. 

(h) Exceptions to EASA AD 2023–0021 

(1) Where EASA AD 2023–0021 defines the 

AMP as ‘‘the approved Aircraft Maintenance 

Programme containing the tasks on the basis 

of which the scheduled maintenance is 

conducted to ensure the continuing 

airworthiness of each operated engine,’’ for 

this AD, replace that text with, ‘‘the aircraft 

maintenance program containing the tasks on 

the basis of which the scheduled 

maintenance is conducted to ensure the 

continuing airworthiness of each operated 

airplane.’’ 

(2) Where EASA AD 2023–0021 defines the 

ALS as ‘‘the Airworthiness Limitations 

Section of GEAC EMM No. 0983402 Revision 

25, dated November 21, 2022,’’ for this AD, 

replace that text with, ‘‘the airworthiness 

limitations section of GEAC EMM No. 

0983402 Revision 26, dated February 1, 

2023.’’ The ALS in Revision 26 of the EMM 

is unchanged from Revision 25 of the EMM. 

(3) Where EASA AD 2023–0021 refers to its 

effective date, this AD requires using the 

effective date of this AD. 

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

0021 specifies revising ‘‘the approved AMP 

within 12 months after the effective date of 

EASA AD 2023–0021,’’ replace that text with, 

‘‘the ALS of the existing approved engine 

maintenance or inspection program, as 

applicable, within 90 days after the effective 

date of this AD.’’ 

(5) This AD does not require compliance 

with paragraphs (1), (2), (4), and (5) of EASA 

AD 2023–0021. 

(6) This AD does not adopt the Remarks 

paragraph of EASA AD 2023–0021. 

(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 2023–0021. 

(j) Alternative Methods of Compliance 

(AMOCs): 

(1) The Manager, International Validation 

Branch, FAA, has the authority to approve 

AMOCs for this AD, if requested using the 


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Federal Register / Vol. 88, No. 171 / Wednesday, September 6, 2023 / Proposed Rules 60899 

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 Barbara Caufield, Aviation Safety 

Engineer, FAA, 1600 Stewart Avenue, Suite 

410, Westbury, NY 11590; phone: (781) 238– 

7146; email: barbara.caufield@faa.gov. 

(l) Material Incorporated by Reference 

(1) The Director of the Federal Register 

approved the incorporation by reference 

(IBR) 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 2023–0021, dated January 23, 2023. 

(ii) [Reserved] 

(3) For EASA AD 2023–0021, 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. 

(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. 2023–18930 Filed 9–5–23; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2023–1817; Project 

Identifier MCAI–2023–00664–T] 

RIN 2120–AA64 

Airworthiness Directives; Airbus 

Canada Limited Partnership (Type 

Certificate Previously Held by C Series 

Aircraft Limited Partnership (CSALP); 

Bombardier, Inc.) Airplanes 

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 Airbus Canada Limited 

Partnership Model BD–500–1A10 and 

BD–500–1A11 airplanes. This proposed 

AD was prompted by a design review 

that identified the fixed emergency 

locator transmitter (ELT) lithium 

batteries would not be sufficiently 

cooled by the outside air in the event of 

a thermal runaway event. This proposed 

AD would require replacing the ELT 

with a new ELT with redesigned 

batteries, as specified in a Transport 

Canada AD, which is proposed for 

incorporation by reference (IBR). 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 October 23, 

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–2023–1817; or in person at 

Docket Operations between 9 a.m. and 

5 p.m., Monday through Friday, except 

Federal holidays. The AD docket 

contains this NPRM, the mandatory 

continuing airworthiness information 

(MCAI), any comments received, and 

other information. The street address for 

Docket Operations is listed above. 

Material Incorporated by Reference: 

• For material that is proposed for 

IBR in this NPRM, contact Transport 

Canada, Transport Canada National 

Aircraft Certification, 159 Cleopatra 

Drive, Nepean, Ontario K1A 0N5, 

Canada; telephone 888–663–3639; email 

TC.AirworthinessDirectivesConsignesdenavigabilite.TC@tc.gc.ca; 

website tc.canada.ca/en/aviation. It is 

also available at regulations.gov under 

Docket No. FAA–2023–1817. 

• You may view this service 

information at the FAA, Airworthiness 

Products Section, Operational Safety 

Branch, 2200 South 216th Street, Des 

Moines, WA. For information on the 

availability of this material at the FAA, 

call 206–231–3195. 

FOR FURTHER INFORMATION CONTACT: 

Steven Dzierzynski, Aviation Safety 

Engineer, FAA, 1600 Stewart Avenue, 

Suite 410, Westbury, NY 11590; 

telephone 516–228–7300; email 9-avsnyaco-cos@faa.gov. 

SUPPLEMENTARY INFORMATION: 

Comments Invited 

The FAA invites you to send any 

written relevant data, views, or 

arguments about this proposal. Send 

your comments to an address listed 

under ADDRESSES. Include ‘‘Docket No. 

FAA–2023–1817; Project Identifier 

MCAI–2023–00664–T’’ at the beginning 

of your comments. The most helpful 

comments reference a specific portion of 

the proposal, explain the reason for any 

recommended change, and include 

supporting data. The FAA will consider 

all comments received by the closing 

date and may amend this proposal 

because of those comments. 

Except for Confidential Business 

Information (CBI) as described in the 

following paragraph, and other 

information as described in 14 CFR 

11.35, the FAA will post all comments 

received, without change, to 

regulations.gov, including any personal 

information you provide. The agency 

will also post a report summarizing each 

substantive verbal contact received 

about this NPRM. 

Confidential Business Information 

CBI is commercial or financial 

information that is both customarily and 

actually treated as private by its owner. 

Under the Freedom of Information Act 

(FOIA) (5 U.S.C. 552), CBI is exempt 

from public disclosure. If your 

comments responsive to this NPRM 

contain commercial or financial 

information that is customarily treated 

as private, that you actually treat as 


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