77236 Federal Register / Vol. 88, No. 216 / Thursday, November 9, 2023 / Proposed Rules 

established for Oregon and Washington 

hazelnuts. 

Erin Morris, 

Associate Administrator, Agricultural 

Marketing Service. 

[FR Doc. 2023–24793 Filed 11–8–23; 8:45 am] 

BILLING CODE P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2023–2147; Project 

Identifier MCAI–2023–00663–E] 

RIN 2120–AA64 

Airworthiness Directives; Pratt & 

Whitney Canada Corp. 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 all 

Pratt & Whitney Canada Corp. (P&WC) 

Model PW307A and PW307D engines. 

This proposed AD was prompted by a 

root cause analysis of an event involving 

an uncontained failure of a highpressure turbine (HPT) 1st-stage disk 

that resulted in high-energy debris 

penetrating the engine cowling and an 

aborted takeoff. This proposed AD 

would require removing from service 

and replacing certain HPT disks and 

would also prohibit installing certain 

HPT disks on any engine, 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 NPRM by December 26, 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–2023–2147; 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 identified 

in this proposed AD, contact Transport 

Canada, Transport Canada National 

Aircraft Certification, 159 Cleopatra 

Drive, Nepean, Ontario, K1A 0N5, 

Canada; phone: (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–2023–2147. 

• 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–2023–2147; Project Identifier 

MCAI–2023–00663–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 

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 

Transport Canada, which is the 

aviation authority for Canada, has 

issued Transport Canada AD CF–2023– 

30, dated May 8, 2023 (Transport 

Canada AD CF–2023–30) (also referred 

to as the MCAI), to correct an unsafe 

condition on P&WC Model PW307A and 

PW307D engines with certain serial 

numbered HPT disks installed. The 

MCAI states that on March 18, 2020, an 

Airbus Model A321–231 airplane, 

powered by an International Aero 

Engines AG (IAE) Model V2533–A5 

engines, experienced an uncontained 

HPT 1st-stage disk failure that resulted 

in an aborted takeoff and high-energy 

debris penetrating the engine cowling. 

In response to the March 2020 

uncontained HPT 1st-stage disk failure, 

the FAA issued a series of ADs, 

including Emergency AD 2020–07–51, 

Amendment 39–21110 (85 FR 20402, 

April 13, 2020) (AD 2020–07–51). Since 

the FAA issued AD 2020–07–51, IAE 

determined that the failure of the 

V2533–A5 engine was due to an 

undetected subsurface material defect in 

the HPT 1st-stage disk that may affect 

the life of the part. In coordination with 

IAE, P&WC performed a records review 

and analysis of PW307A and PW307D 

engine parts made of similar material 

and identified additional affected HPT 

1st and 2nd-stage disks, installed on 

PW307A and PW307D engines. These 

additional HPT disks may have a 

material defect that could reduce the life 

of the part and must be removed from 

service. 

You may examine the MCAI in the 

AD docket at regulations.gov under 

Docket No. FAA–2023–2147. 


ddrumheller on DSK120RN23PROD with PROPOSALS1
Federal Register / Vol. 88, No. 216 / Thursday, November 9, 2023 / Proposed Rules 77237 

Related Service Information Under 1 

CFR Part 51 

The FAA reviewed Transport Canada 

AD CF–2023–30, which identifies the 

affected HPT disks and specifies 

procedures for replacement. 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. 

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 

Transport Canada AD CF–2023–30 in 

the FAA final rule. This proposed AD 

would, therefore, require compliance 

with Transport Canada AD CF–2023–30 

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 Transport Canada AD does not mean 

that operators need comply only with 

that section. For example, where the AD 

requirement refers to ‘‘Compliance,’’ 

compliance with this AD requirement is 

not limited to the section titled 

‘‘Corrective Actions’’ in Transport 

Canada AD CF–2023–30. Service 

information required by the Transport 

Canada AD for compliance will be 

available at regulations.gov under 

Docket No. FAA–2023–2147 after the 

FAA final rule is published. 

Proposed AD Requirements in This 

NPRM 

This proposed AD would require 

accomplishing the actions specified in 

the MCAI, except for any differences 

identified as exceptions in the 

regulatory text of this proposed AD. 

Costs of Compliance 

The FAA estimates that this AD, if 

adopted as proposed, would affect 63 

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 

Remove affected HPT 1st or 2nd stage 

disk.

8 work-hours × $85 per hour = $680 .... $136,400 $137,080 $8,636,040 

The FAA has included all known 

costs in its cost estimate. According to 

the manufacturer, however, some of the 

costs of this proposed AD may be 

covered under warranty, thereby 

reducing the cost impact on affected 

operators. 

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: 

Pratt & Whitney Canada Corp.: Docket No. 

FAA–2023–2147; Project Identifier 

MCAI–2023–00663–E. 

(a) Comments Due Date 

The FAA must receive comments on this 

airworthiness directive (AD) by December 26, 

2023. 

(b) Affected ADs 

None. 

(c) Applicability 

This AD applies to Pratt & Whitney Canada 

Corp. Model PW307A and PW307D engines. 

(d) Subject 

Joint Aircraft System Component (JASC) 

Code 7250, Turbine Section. 

(e) Unsafe Condition 

This AD was prompted by a root cause 

analysis of an event involving an 

International Aero Engines AG Model 


ddrumheller on DSK120RN23PROD with PROPOSALS1
77238 Federal Register / Vol. 88, No. 216 / Thursday, November 9, 2023 / Proposed Rules 

V2533–A5 engine, which experienced an 

uncontained failure of a high pressure 

turbine (HPT) 1st-stage disk that resulted in 

high-energy debris penetrating the engine 

cowling. The FAA is issuing this AD to 

prevent failure of the HPT 1st and 2nd-stage 

disks. The unsafe condition, if not addressed, 

could result in uncontained HPT disk failure, 

damage to the engine, damage to the airplane, 

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 paragraphs (h) and 

(i) of this AD: Perform all required actions 

within the compliance times specified in, 

and in accordance with, Transport Canada 

AD CF–2023–30, dated May 8, 2023 

(Transport Canada AD CF–2023–30). 

(h) Exceptions to Transport Canada AD CF– 

2023–30 

(1) Where Transport Canada AD CF–2023– 

30 requires compliance from its effective 

date, this AD requires using the effective date 

of this AD. 

(2) Where paragraph A. of Transport 

Canada AD CF–2023–30 specifies ‘‘Before 31 

January 2027,’’ replace that text with ‘‘Within 

36 months after the effective date of this 

AD.’’ 

(3) Where paragraph B. of Transport 

Canada AD CF–2023–30 specifies ‘‘At the 

next opportunity, when the affected engine is 

disassembled and access is available to the 

HPT disk, remove any affected HPT disk 

listed in Table 2 or Table 4 below and replace 

the affected HPT disk with a serviceable 

part,’’ replace that text with ‘‘For any engine 

with an installed HPT disk listed in Table 2 

or Table 4 [of Transport Canada AD CF– 

2023–30], at the next piece-part exposure, 

remove the affected HPT disk from service 

and replace with a serviceable part.’’ 

(i) No Reporting Requirement 

Although the service information 

referenced in Transport Canada AD CF– 

2023–30 specifies to submit certain 

information to the manufacturer, this AD 

does not include that requirement. 

(j) Definitions 

(1) For the purpose of this AD, ‘‘piece-part 

exposure’’ is when the affected part is 

removed from the engine and completely 

disassembled. 

(2) For the purpose of this AD, a 

‘‘serviceable part’’ is any HPT disk that is not 

identified in Tables 1 through 4 of Transport 

Canada AD CF–2023–30. 

(k) 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 

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 (l) 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) 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. 

(m) 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) Transport Canada AD CF–2023–30, 

dated May 8, 2023. 

(ii) [Reserved] 

(3) For Transport Canada AD CF–2023–30, 

contact Transport Canada, Transport Canada 

National Aircraft Certification, 159 Cleopatra 

Drive, Nepean, Ontario K1A 0N5, Canada; 

phone: (888) 663–3639; email: 

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

website tc.canada.ca/en/aviation. 

(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 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 30, 2023. 

Victor Wicklund, 

Deputy Director, Compliance & Airworthiness 

Division, Aircraft Certification Service. 

[FR Doc. 2023–24562 Filed 11–8–23; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 71 

[Docket No. FAA–2022–1673; Airspace 

Docket No. 22–AGL–38] 

RIN 2120–AA66 

Proposed Establishment of Class E 

Airspace; Paoli, IN 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Proposed rule; withdrawal. 

SUMMARY: This action withdraws the 

notice of proposed rulemaking (NPRM) 

published in the Federal Register on 

December 22, 2022, proposing to 

establish Class E airspace at Paoli, IN. 

The FAA has determined that 

withdrawal of the NPRM is warranted as 

the airport has withdrawn its request to 

develop public instrument flight 

procedures necessitating the 

establishment of Class E airspace. 

DATES: Effective as of 0901 UTC, 

November 9, 2023, the proposed rule 

published December 22, 2022 (87 FR 

78616), is withdrawn. 

FOR FURTHER INFORMATION CONTACT: 

Jeffrey Claypool, Federal Aviation 

Administration, Operations Support 

Group, Central Service Center, 10101 

Hillwood Parkway, Fort Worth, TX 

76177; telephone (817) 222–5711. 

SUPPLEMENTARY INFORMATION: 

Reason for Withdrawal 

The FAA published a NPRM on 

December 22, 2022 (87 FR 78616), 

Docket No. FAA–2022–1673, to amend 

14 CFR 71 by establishing Class E 

airspace extending upward from 700 

feet above the surface at Paoli Municipal 

Airport, Paoli, IN, to support instrument 

flight rule operations at this airport. 

Subsequent to publication, the FAA was 

notified that the airport has withdrawn 

its request to develop public instrument 

flight procedures at this airport which 

necessitated the Class E airspace. 

Conclusion 

The FAA determined that the NPRM 

published on December 22, 2022 (87 FR 

78616), is unnecessary. Therefore, the 

FAA withdraws that NPRM. 

Issued in Fort Worth, Texas, on November 

6, 2023. 

Martin A. Skinner, 

Acting Manager, Operations Support Group, 

ATO Central Service Center. 

[FR Doc. 2023–24843 Filed 11–8–23; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 71 

[Docket No. FAA–2023–2194; Airspace 

Docket No. 23–ASO–19] 

RIN 2120–AA66 

Amendment of VOR Federal Airways 

V–5, V–47, V–97, V–128, V–275, and V– 

517, and United States Area Navigation 

(RNAV) Route T–315, and Revocation 

of VOR Federal Airway V–19 in the 

Vicinity of Cincinnati, KY 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 


ddrumheller on DSK120RN23PROD with PROPOSALS1