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

63034 

Vol. 88, No. 177 

Thursday, September 14, 2023 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2023–1880; Project 

Identifier MCAI–2023–00587–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 damage found on 

two power-feeder harnesses due to 

chafing with wheel bins. An 

investigation found that the powerfeeder harnesses were not adequately 

supported to protect from chafing due to 

vibration. This proposed AD would 

require modifying the variable 

frequency generator (VFG) power-feeder 

harness routing, 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 30, 

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–2023–1880; 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 Transport Canada material that 

is proposed for IBR in this AD, 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. 

You may find this material on the 

Transport Canada website at 

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

available at regulations.gov under 

Docket No. FAA–2023–1880. 

• For service information identified 

in this NPRM, contact Airbus Canada 

Limited Partnership, 13100 Henri-Fabre 

Boulevard, Mirabel, Que ́bec, J7N 3C6, 

Canada; telephone 450–476–7676; email 

a220_crc@abc.airbus; website 

a220world.airbus.com. 

• 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. 

FOR FURTHER INFORMATION CONTACT: 

William Reisenauer, Aviation Safety 

Engineer, FAA, 1600 Stewart Avenue, 

Suite 410, Westbury, NY 11590; phone: 

516–228–7300; email: 9-avs-nyaco-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–2023–1880; Project Identifier 

MCAI–2023–00587–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 

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 William Reisenauer, 

Aviation Safety Engineer, FAA, 1600 

Stewart Avenue, Suite 410, Westbury, 

NY 11590; phone: 516–228–7300; email: 

9-avs-nyaco-cos@faa.gov. 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– 

24, dated April 6, 2023 (Transport 

Canada AD CF–2023–24) (also referred 

to as the MCAI), to correct an unsafe 

condition for certain Airbus Canada 

Limited Partnership Model BD–500– 

1A10 and BD–500–1A11 airplanes. The 

MCAI states that two VFG power-feeder 

harnesses were found damaged due to 

chafing with wheel bins during 


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Federal Register / Vol. 88, No. 177 / Thursday, September 14, 2023 / Proposed Rules 63035 

maintenance in service on three 

airplanes. An investigation found that 

the power-feeder harnesses were not 

adequately supported to protect from 

chafing due to vibration. 

The FAA is proposing this AD to 

prevent damage to VFG power-feeder 

harnesses from chafing due to vibration, 

which could lead to a loss of generated 

power from both VFGs, or to a fire in the 

case of flammable fluid contact with 

arcing wires. 

You may examine the MCAI in the 

AD docket at regulations.gov under 

Docket No. FAA–2023–1880. 

Related Service Information Under 1 

CFR Part 51 

Transport Canada AD CF–2023–24 

specifies procedures for modifying the 

VFG power-feeder harness routing, 

including a general visual inspection for 

damage at the intersection of the VFG 

power-feeder harnesses and the surface 

of the wheel bins, and corrective actions 

including obtaining and following 

repair instructions. 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 

This product has been approved by 

the aviation authority of another 

country and is 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 

in other products of the same type 

design. 

Proposed AD Requirements in This 

NPRM 

This proposed AD would require 

accomplishing the actions specified in 

Transport Canada AD CF–2023–24 

described previously, except for any 

differences identified as exceptions in 

the regulatory text of this proposed AD. 

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 been coordinating 

this process with manufacturers and 

CAAs. As a result, the FAA proposes to 

incorporate Transport Canada AD CF– 

2023–24 by reference in the FAA final 

rule. This proposed AD would, 

therefore, require compliance with 

Transport Canada AD CF–2023–24 in its 

entirety through that incorporation, 

except for any differences identified as 

exceptions in the regulatory text of this 

proposed AD. Service information 

required by Transport Canada AD CF– 

2023–24 for compliance will be 

available at regulations.gov under 

Docket No. FAA–2023–1880 after the 

FAA final rule is published. 

Costs of Compliance 

The FAA estimates that this AD, if 

adopted as proposed, would affect 16 

airplanes of U.S. registry. The FAA 

estimates the following costs to comply 

with this proposed AD: 

ESTIMATED COSTS FOR REQUIRED ACTIONS

Labor cost Parts cost Cost per 

product 

Cost on U.S. 

operators 

Up to 51 work-hours × $85 per hour = Up to $4,335 ................................................ Up to $3,538 ....... Up to $7,873 ....... Up to $125,968. 

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: 

Airbus Canada Limited Partnership (Type 

Certificate Previously Held by C Series 

Aircraft Limited Partnership (CSALP); 

Bombardier, Inc.): Docket No. FAA– 

2023–1880; Project Identifier MCAI– 

2023–00587–T. 

(a) Comments Due Date 

The FAA must receive comments on this 

airworthiness directive (AD) by October 30, 

2023. 

(b) Affected ADs 

None. 

(c) Applicability 

This AD applies to Airbus Canada Limited 

Partnership Model BD–500–1A10 and BD– 

500–1A11 airplanes, certificated in any 

category, as identified in Transport Canada 


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63036 Federal Register / Vol. 88, No. 177 / Thursday, September 14, 2023 / Proposed Rules 

AD CF–2023–24, dated April 6, 2023 

(Transport Canada AD CF–2023–24). 

(d) Subject 

Air Transport Association (ATA) of 

America Code 24, Electrical Power. 

(e) Unsafe Condition 

This AD was prompted by damage found 

on two variable frequency generator (VFG) 

power-feeder harnesses due to chafing with 

wheel bins. An investigation found that the 

power-feeder harnesses were not adequately 

supported to protect from chafing due to 

vibration. The FAA is issuing this AD to 

prevent damage to VFG power-feeder 

harnesses from chafing due to vibration. The 

unsafe condition, if not addressed, could lead 

to a loss of generated power from both VFGs, 

or to a fire in the case of flammable fluid 

contact with arcing wires. 

(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, Transport Canada AD CF– 

2023–24. 

(h) Exceptions to Transport Canada AD CF– 

2023–24 

(1) Where Transport Canada AD CF–2023– 

24 refers to its effective date, this AD requires 

using the effective date of this AD. 

(2) Where Transport Canada AD CF–2023– 

24 refers to ‘‘hours air time,’’ this AD requires 

using ‘‘flight hours.’’ 

(i) 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 International Validation Branch, send 

it to the attention of the person identified in 

paragraph (j) of this AD. Information may be 

emailed to: 9-AVS-AIR-730-AMOC@faa.gov. 

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 Transport Canada; or Airbus 

Canada Limited Partnership’s Transport 

Canada Design Approval Organization 

(DAO). If approved by the DAO, the approval 

must include the DAO-authorized signature. 

(j) Additional Information 

For more information about this AD, 

contact William Reisenauer, Aviation Safety 

Engineer, FAA, 1600 Stewart Avenue, Suite 

410, Westbury, NY 11590; phone: 516–228 

7300; email: 9-avs-nyaco-cos@faa.gov. 

(k) 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) Transport Canada AD CF–2023–24, 

dated April 6, 2023. 

(ii) [Reserved] 

(3) For Transport Canada AD CF–2023–24, 

contact Transport Canada National Aircraft 

Certification, 159 Cleopatra Drive, Nepean, 

Ontario K1A 0N5, Canada; telephone 888– 

663–3639; email TC.AirworthinessDirectivesConsignesdenavigabilite.TC@tc.gc.ca. You 

may find this Transport Canada AD on the 

Transport Canada website at tc.canada.ca/ 

en/aviation. 

(4) 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. 

(5) You may view this material 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 8, 2023. 

Ross Landes, 

Deputy Director for Regulatory Operations, 

Compliance & Airworthiness Division, 

Aircraft Certification Service. 

[FR Doc. 2023–19861 Filed 9–13–23; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2023–1881; Project 

Identifier MCAI–2023–00495–T] 

RIN 2120–AA64 

Airworthiness Directives; Deutsche 

Aircraft GmbH (Type Certificate 

Previously Held by 328 Support 

Services GmbH; AvCraft Aerospace 

GmbH; Fairchild Dornier GmbH; 

Dornier Luftfahrt GmbH) 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 all 

Deutsche Aircraft GmbH Model 328–100 

and 328–300 airplanes. This proposed 

AD was prompted by a manufacturer’s 

design review, which identified a 

potential risk of the rudder control rod 

buckling during operation with one 

engine inoperative during take-off and 

landing phases. This proposed AD 

would require visually inspecting the 

rudder control rod, performing a onetime functional check of the rudder 

control rod, performing corrective 

actions if necessary, and reporting the 

inspection results, as specified in a 

European Union Aviation Safety Agency 

(EASA) AD, which is proposed for 

incorporation by reference (IBR). This 

proposed AD would also limit the 

installation of affected parts under 

certain conditions. 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 30, 

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–2023–1881; 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 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. It is also available at 

regulations.gov under Docket No. FAA– 

2023–1881. 

• 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 


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