Federal Register / Vol. 88, No. 192 / Thursday, October 5, 2023 / Rules and Regulations 69011 

Issued on September 29, 2023. 

Victor Wicklund, 

Deputy Director, Compliance & Airworthiness 

Division, Aircraft Certification Service. 

[FR Doc. 2023–22085 Filed 10–4–23; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2023–1641; Project 

Identifier MCAI–2023–00598–T; Amendment 

39–22557; AD 2023–19–07] 

RIN 2120–AA64 

Airworthiness Directives; ATR—GIE 

Avions de Transport Re ́gional 

Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Final rule. 

SUMMARY: The FAA is superseding 

Airworthiness Directive (AD) 2021–10– 

20, which applied to certain ATR–GIE 

Avions de Transport Re ́gional Model 

ATR42–500 and ATR72–212A 

airplanes. AD 2021–10–20 required 

revising the existing aircraft flight 

manual (AFM) and applicable 

corresponding operational procedures to 

update a systems limitation, limiting 

dispatch with certain equipment 

inoperative, performing an operational 

test of a certain contactor and an 

electrical test of a certain battery toggle 

switch, and performing corrective 

actions if necessary. This AD was 

prompted by new procedures for 

modifying the wiring and replacing the 

battery toggle switch that have been 

developed that would terminate the AD 

requirements. This AD continues to 

require certain actions in AD 2021–10– 

20, and requires modifying the battery 

toggle switch wiring and replacing the 

battery toggle switch, and revises the 

applicability to include additional 

airplanes, as specified in a European 

Union Aviation Safety Agency (EASA) 

AD, which is incorporated by reference. 

This AD also prohibits the installation 

of affected parts. The FAA is issuing 

this AD to address the unsafe condition 

on these products. 

DATES: This AD is effective November 9, 

2023. 

The Director of the Federal Register 

approved the incorporation by reference 

of a certain publication listed in this AD 

as of November 9, 2023. 

ADDRESSES: 

AD Docket: You may examine the AD 

docket at regulations.gov under Docket 

No. FAA–2023–1641; or in person at 

Docket Operations between 9 a.m. and 

5 p.m., Monday through Friday, except 

Federal holidays. The AD docket 

contains this final rule, the mandatory 

continuing airworthiness information 

(MCAI), any comments received, and 

other information. The address for 

Docket Operations is U.S. Department of 

Transportation, Docket Operations, M– 

30, West Building Ground Floor, Room 

W12–140, 1200 New Jersey Avenue SE, 

Washington, DC 20590. 

Material Incorporated by Reference: 

• For material incorporated by 

reference in this AD, contact EASA, 

Konrad-Adenauer-Ufer 3, 50668 

Cologne, Germany; telephone +49 221 

8999 000; email ADs@easa.europa.eu; 

website easa.europa.eu. You may find 

this material on the EASA website 

ad.easa.europa.eu. 

• You may view this material 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. 

It is also available in the AD docket at 

regulations.gov under Docket No. FAA– 

2023–1641. 

FOR FURTHER INFORMATION CONTACT: 

Shahram Daneshmandi, Aviation Safety 

Engineer, FAA, 1600 Stewart Avenue, 

Suite 410, Westbury, NY 11590; 

telephone 206–231–3220; email: 

shahram.daneshmandi@faa.gov. 

SUPPLEMENTARY INFORMATION: 

Background 

The FAA issued a notice of proposed 

rulemaking (NPRM) to amend 14 CFR 

part 39 to supersede AD 2021–10–20, 

Amendment 39–21553 (86 FR 26373, 

May 14, 2021) (AD 2021–10–20). AD 

2021–10–20 applied to certain ATR–GIE 

Avions de Transport Re ́gional Model 

ATR42–500 and ATR72–212A 

airplanes. AD 2021–10–20 required 

revising the existing AFM and 

applicable corresponding operational 

procedures to update a systems 

limitation, limiting dispatch with 

certain equipment inoperative, 

performing an operational test of a 

certain contactor and an electrical test of 

a certain battery toggle switch, and 

performing corrective actions if 

necessary. The FAA issued AD 2021– 

10–20 to address reports of temporary 

loss of all display units and the 

integrated electronic standby instrument 

(IESI), which could result in loss of 

control of the airplane. 

The NPRM published in the Federal 

Register on July 28, 2023 (88 FR 48764). 

The NPRM was prompted by AD 2023– 

0078R1, dated April 20, 2023, issued by 

EASA, which is the Technical Agent for 

the Member States of the European 

Union (EASA AD 2023–0078R1) (also 

referred to as the MCAI). The MCAI 

states that new modification 

instructions have been published that 

would terminate the requirements of 

EASA Emergency AD 2021–0120–E, 

dated May 3, 2021 (which prompted 

FAA AD 2021–10–20). The MCAI also 

expands the applicability to include 

Model ATR72–101, –102, –201, –202, 

–211, and –212 airplanes. The MCAI 

states that temporary loss of all display 

units and the IESI, if not corrected, 

could result in loss of control of the 

airplane. 

In the NPRM, the FAA proposed to 

continue to require certain actions in 

AD 2021–10–20, and to require 

modifying the battery toggle switch 

wiring and replacing the battery toggle 

switch, and to revise the applicability to 

include additional airplanes, as 

specified in EASA AD 2023–0078R1. 

The NPRM also proposed to prohibit the 

installation of affected parts. The FAA 

is issuing this AD to address the unsafe 

condition on these products. 

You may examine the MCAI in the 

AD docket at regulations.gov under 

Docket No. FAA–2023–1641. 

Changes Since the NPRM Was Issued 

In the ‘‘Costs of Compliance’’ section, 

the NPRM stated an incorrect estimated 

cost of the retained actions from AD 

2021–10–20. The FAA has corrected the 

cost information in this final rule. 

Discussion of Final Airworthiness 

Directive 

Comments 

The FAA received one comment from 

Air Line Pilots Association, 

International (ALPA) who supported the 

NPRM without change. 

Conclusion 

These products have been approved 

by the aviation authority of another 

country and are approved for operation 

in the United States. Pursuant to the 

FAA’s bilateral agreement with this 

State of Design Authority, it has notified 

the FAA of the unsafe condition 

described in the MCAI referenced 

above. The FAA reviewed the relevant 

data, considered the comment received, 

and determined that air safety requires 

adopting this AD as proposed. 

Accordingly, the FAA is issuing this AD 

to address the unsafe condition on this 

product. Except for minor editorial 

changes, and any other changes 

described previously, this AD is 

adopted as proposed in the NPRM. 

None of the changes will increase the 

economic burden on any operator. 


ddrumheller on DSK120RN23PROD with RULES1
69012 Federal Register / Vol. 88, No. 192 / Thursday, October 5, 2023 / Rules and Regulations 

Related Service Information Under 1 

CFR Part 51 

EASA AD 2023–0078R1 specifies 

procedures for revising the existing 

AFM to update a systems limitation for 

the transformer rectifier unit (TRU), 

limiting dispatch with certain 

equipment inoperative (which can be 

done by amending the operator’s 

minimum equipment list (MEL)), 

performing an operational test of the 

contactor FIN 1PA for discrepancies 

(i.e., a lack of power supply to DU 4 or 

a static inverter 1 INV FAULT not being 

displayed on 29VU), replacing the 

battery toggle switch FIN 7PA, 

modifying the wiring, and performing 

corrective actions. Corrective actions 

include replacing the contactor FIN 1PA 

and restoring wiring. EASA AD 2023– 

0078R1 also prohibits the installation of 

affected parts. 

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 the ADDRESSES section. 

Costs of Compliance 

The FAA estimates that this AD 

affects 21 airplanes of U.S. registry. The 

FAA estimates the following costs to 

comply with this AD: 

ESTIMATED COSTS FOR REQUIRED ACTIONS

Action Labor cost Parts cost Cost per 

product 

Cost on U.S. 

operators 

Retained actions from AD 2021–10–20 ......... 3 work-hours × $85 per hour = $255 ............. $0 $255 $5,355 

New actions .................................................... 10 work-hours × $85 per hour = $850 ........... 0 850 17,850 

The FAA has included all known 

costs in its cost estimate. According to 

the manufacturer, however, some or all 

of the costs of this 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 

This AD will not have federalism 

implications under Executive Order 

13132. This AD will not have a 

substantial direct effect on the States, on 

the relationship between the national 

government and the States, or on the 

distribution of power and 

responsibilities among the various 

levels of government. 

For the reasons discussed above, I 

certify that this AD: 

(1) Is not a ‘‘significant regulatory 

action’’ under Executive Order 12866, 

(2) Will not affect intrastate aviation 

in Alaska, and 

(3) Will not have a significant 

economic impact, positive or negative, 

on a substantial number of small entities 

under the criteria of the Regulatory 

Flexibility Act. 

List of Subjects in 14 CFR Part 39 

Air transportation, Aircraft, Aviation 

safety, Incorporation by reference, 

Safety. 

The Amendment 

Accordingly, under the authority 

delegated to me by the Administrator, 

the FAA amends 14 CFR part 39 as 

follows: 

PART 39—AIRWORTHINESS 

DIRECTIVES 

■ 1. The authority citation for part 39 

continues to read as follows: 

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

§ 39.13 [Amended] 

■ 2. The FAA amends § 39.13 by: 

■ a. Removing Airworthiness Directive 

2021–10–20, Amendment 39–21553 (86 

FR 26373, May 14, 2021); and 

■ b. Adding the following new 

Airworthiness Directive: 

2023–19–07 ATR—GIE Avions de 

Transport Re ́gional: Amendment 39– 

22557; Docket No. FAA–2023–1641; 

Project Identifier MCAI–2023–00598–T. 

(a) Effective Date 

This airworthiness directive (AD) is 

effective November 9, 2023. 

(b) Affected ADs 

This AD replaces AD 2021–10–20, 

Amendment 39–21553 (86 FR 26373, May 14, 

2021) (AD 2021–10–20). 

(c) Applicability 

This AD applies to all ATR–GIE Avions de 

Transport Re ́gional Model ATR42–500, and 

ATR72–101, –102, –201, –202, –211, –212, 

and –212A airplanes, certificated in any 

category. 

(d) Subject 

Air Transport Association (ATA) of 

America Code: 24, Electrical Power. 

(e) Unsafe Condition 

This AD was prompted by reports of 

temporary loss of all display units and the 

integrated electronic standby instrument 

(IESI). The FAA is issuing this AD to address 

temporary loss of all display units and the 

IESI, which could result in loss of control of 

the airplane. 

(f) Compliance 

Comply with this AD within the 

compliance times specified, unless already 

done. 

(g) Requirements 

Except as specified in paragraph (h) of this 

AD: Comply with all required actions and 

compliance times specified in, and in 

accordance with, European Union Aviation 

Safety Agency (EASA) AD 2023–0078R1, 

dated April 20, 2023 (EASA AD 2023– 

0078R1). 

(h) Exceptions to EASA AD 2023–0078R1 

(1) Where EASA AD 2023–0078R1 refers to 

‘‘05 May 2021 [the effective date of EASA AD 

2021–0120–E],’’ this AD requires using May 

14, 2021 (the effective date of AD 2021–10– 

20). 

(2) Where EASA AD 2023–0078R1 refers to 

its effective date, this AD requires using the 

effective date of this AD. 

(3) Where paragraphs (1), (2), and (5) of 

EASA AD 2023–0078R1 specify to ‘‘inform 

all flight crews, and, thereafter, operate the 

aeroplane accordingly,’’ this AD does not 

require those actions as those actions are 

already required by existing FAA operating 

regulations (see 14 CFR 91.9, 91.505, and 

121.137). 

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

0078R1 specifies actions if ‘‘discrepancies are 

detected,’’ for this AD a ‘‘discrepancy’’ is 

defined as a lack of power supply to DU 4 

or a INV FAULT is not triggered. 

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

section of EASA AD 2023–0078R1. 


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Federal Register / Vol. 88, No. 192 / Thursday, October 5, 2023 / Rules and Regulations 69013 

(i) No Reporting Requirement 

Although certain service information 

referenced in EASA AD 2023–0078R1 

specifies to submit certain information to the 

manufacturer, this AD does not include that 

requirement. 

(j) Additional AD Provisions 

The following provisions also apply to this 

AD: 

(1) Alternative Methods of Compliance 

(AMOCs): 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 

responsible Flight Standards Office, as 

appropriate. If sending information directly 

to the manager of the International Validation 

Branch, mail it to the address identified in 

paragraph (k) of this AD or email to: 9-AVSAIR-730-AMOC@faa.gov. If mailing 

information, also submit information by 

email. Before using any approved AMOC, 

notify your appropriate principal inspector, 

or lacking a principal inspector, the manager 

of the responsible Flight Standards Office. 

(2) Contacting the Manufacturer: For any 

requirement in this AD to obtain instructions 

from a manufacturer, the instructions must 

be accomplished using a method approved 

by the Manager, International Validation 

Branch, FAA; or EASA; or ATR–GIE Avions 

de Transport Re ́gional’s EASA Design 

Organization Approval (DOA). If approved by 

the DOA, the approval must include the 

DOA-authorized signature. 

(k) Additional Information 

For more information about this AD, 

contact Shahram Daneshmandi, Aviation 

Safety Engineer, FAA, 1600 Stewart Avenue, 

Suite 410, Westbury, NY 11590; telephone 

206–231–3220; email 

shahram.daneshmandi@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 this AD specifies otherwise. 

(i) European Union Aviation Safety Agency 

(EASA) AD 2023–0078R1, dated April 20, 

2023. 

(ii) [Reserved] 

(3) For EASA AD 2023–0078R1, contact 

EASA, Konrad-Adenauer-Ufer 3, 50668 

Cologne, Germany; telephone +49 221 8999 

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

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

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

(4) 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. 

(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 September 22, 2023. 

Victor Wicklund, 

Deputy Director, Compliance & Airworthiness 

Division, Aircraft Certification Service. 

[FR Doc. 2023–22083 Filed 10–4–23; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2023–0026; Project 

Identifier MCAI–2022–01210–T; Amendment 

39–22443; AD 2023–10–07] 

RIN 2120–AA64 

Airworthiness Directives; Airbus SAS 

Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Final rule. 

SUMMARY: The FAA is adopting a new 

airworthiness directive (AD) for certain 

Airbus SAS Model A319–151N, –153N 

and –171N airplanes; Model A320– 

251N, –252N, –253N, –271N, –272N, 

and –273N airplanes; and Model A321– 

251N, –252N, –253N, –271N, –272N, 

–251NX, –252NX, –253NX, –271NX, 

and –272NX airplanes. This AD was 

prompted by a safety review of the 

airplane fuel system, which identified 

that the electrical harness routing of the 

engine low pressure shut off valve 

(LPSOV) is not adequately protected 

against uncontained engine rotor failure 

(UERF). This AD requires modification 

of the LPSOV electrical harness routing 

on either the left-hand engine or the 

right-hand engine, as specified in a 

European Union Aviation Safety Agency 

(EASA) AD, which is incorporated by 

reference. The FAA is issuing this AD 

to address the unsafe condition on these 

products. 

DATES: This AD is effective November 9, 

2023. 

The Director of the Federal Register 

approved the incorporation by reference 

of a certain publication listed in this AD 

as of November 9, 2023. 

ADDRESSES: 

AD Docket: You may examine the AD 

docket at regulations.gov under Docket 

No. FAA–2023–0026; or in person at 

Docket Operations between 9 a.m. and 

5 p.m., Monday through Friday, except 

Federal holidays. The AD docket 

contains this final rule, the mandatory 

continuing airworthiness information 

(MCAI), any comments received, and 

other information. The address for 

Docket Operations is U.S. Department of 

Transportation, Docket Operations, M– 

30, West Building Ground Floor, Room 

W12–140, 1200 New Jersey Avenue SE, 

Washington, DC 20590. 

Material Incorporated by Reference: 

• For EASA material incorporated by 

reference in this AD, contact EASA, 

Konrad-Adenauer-Ufer 3, 50668 

Cologne, Germany; telephone +49 221 

8999 000; email ADs@easa.europa.eu; 

website easa.europa.eu. You may find 

this material on the EASA website at 

ad.easa.europa.eu. 

• You may view this material at the 

FAA, Airworthiness Products Section, 

Operational Safety Branch, 2200 South 

216th St., Des Moines, WA. For 

information on the availability of this 

material at the FAA, call 206–231–3195. 

It is also available in the AD docket at 

regulations.gov under Docket No. FAA– 

2023–0026. 

FOR FURTHER INFORMATION CONTACT: Erik 

Bedillion, Aviation Safety Engineer, 

FAA, 1600 Stewart Avenue, Suite 410, 

Westbury, NY 11590; phone 404–474– 

5583; email Erik.Bedillion@faa.gov. 

SUPPLEMENTARY INFORMATION: 

Background 

The FAA issued a notice of proposed 

rulemaking (NPRM) to amend 14 CFR 

part 39 by adding an AD that would 

apply to certain Airbus SAS Model 

A319–151N, –153N and –171N 

airplanes; Model A320–251N, –252N, 

–253N, –271N, –272N, and –273N 

airplanes; and Model A321–251N, 

–252N, –253N, –271N, –272N, –251NX, 

–252NX, –253NX, –271NX, and –272NX 

airplanes. The NPRM published in the 

Federal Register on January 30, 2023 

(88 FR 5817). The NPRM was prompted 

by AD 2022–0185, dated September 5, 

2022, issued by EASA, which is the 

Technical Agent for the Member States 

of the European Union (EASA AD 2022– 

0185) (also referred to as the MCAI). The 

MCAI states during a safety review of 

the airplane fuel system, it was 

identified that the electrical harness 

routing of the engine LPSOV is not 

adequately protected against UERF. 

In the NPRM, the FAA proposed to 

require modification of the LPSOV 

electrical harness routing on either the 

left-hand engine or the right-hand 

engine, as specified in EASA AD 2022– 

0185. The FAA is issuing this AD to 

address inadequate protection of the 

LPSOV against UERF. The unsafe 

condition, if not addressed, could result 

in loss of engine fuel isolation capability 

in case of UERF, possibly resulting in an 

uncontrolled fire. 


ddrumheller on DSK120RN23PROD with RULES1