44324 Federal Register / Vol. 86, No. 153 / Thursday, August 12, 2021 / Proposed Rules 

Cincinnati, OH 45215; phone: (513) 552– 

3272; email: aviation.fleetsupport@

ae.ge.com; website: www.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 (781) 238–7759. 

Issued on July 9, 2021. 

Gaetano A. Sciortino, 

Deputy Director for Strategic Initiatives, 

Compliance & Airworthiness Division, 

Aircraft Certification Service. 

[FR Doc. 2021–16758 Filed 8–11–21; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2021–0656; Project 

Identifier MCAI–2021–00394–T] 

RIN 2120–AA64 

Airworthiness Directives; De Havilland 

Aircraft of Canada Limited (Type 

Certificate Previously Held by 

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 De Havilland Aircraft of Canada 

Limited Model DHC–8–401 and –402 

airplanes. This proposed AD was 

prompted by reports of loss of hydraulic 

fluid and annunciation of the check fire 

detect light. This proposed AD would 

require doing a detailed visual 

inspection for chafing and proper 

clearance of the left-hand (LH) and 

right-hand (RH) main landing gear 

(MLG) primary zone advanced 

pneumatic detector (APD) sensing lines, 

the hydraulic tube assemblies, and the 

surrounding structure, and doing all 

applicable corrective actions. 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 September 27, 

2021. 

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 De Havilland 

Aircraft of Canada Limited, Q-Series 

Technical Help Desk, 123 Garratt 

Boulevard, Toronto, Ontario M3K 1Y5, 

Canada; telephone 416–375–4000; fax 

416–375–4539; email thd@

dehavilland.com; internet https://

dehavilland.com. You may view this 

service information 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. 

Examining the AD Docket 

You may examine the AD docket at 

https://www.regulations.gov by 

searching for and locating Docket No. 

FAA–2021–0656; 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: 

Chirayu Gupta, Aerospace Engineer, 

Mechanical Systems and Administrative 

Services Section, FAA, New York ACO 

Branch, 1600 Stewart Avenue, Suite 

410, Westbury, NY 11590; telephone 

516–228–7300; fax 516–794–5531; 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–2021–0656; Project Identifier 

MCAI–2021–00394–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 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 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 Chirayu Gupta, 

Aerospace Engineer, Mechanical 

Systems and Administrative Services 

Section, FAA, New York ACO Branch, 

1600 Stewart Avenue, Suite 410, 

Westbury, NY 11590; telephone 516– 

228–7300; fax 516–794–5531; 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 Civil Aviation 

(TCCA), which is the aviation authority 

for Canada, has issued TCCA AD CF– 

2021–12, dated April 14, 2021 (also 

referred to after this as the Mandatory 

Continuing Airworthiness Information, 

or the MCAI), to correct an unsafe 

condition for certain De Havilland 

Aircraft of Canada Limited Model DHC– 

8–401 and –402 airplanes. You may 

examine the MCAI in the AD docket at 

https://www.regulations.gov by 

searching for and locating Docket No. 

FAA–2021–0656. 

This proposed AD was prompted by 

reports of loss of hydraulic fluid and 

annunciation of the check fire detect 

light. The FAA is proposing this AD to 

address insufficient separation between 

the APD sensing line and surrounding 

components, which could lead to a 

hydraulic leak, loss of hydraulic 

systems, and loss of fire detection in the 

MLG primary zone should prolonged 

contact occur. See the MCAI for 

additional background information. 


lotter on DSK11XQN23PROD with PROPOSALS1
Federal Register / Vol. 86, No. 153 / Thursday, August 12, 2021 / Proposed Rules 44325 

Related Service Information Under 1 

CFR Part 51 

De Havilland Aircraft of Canada 

Limited has issued Service Bulletin 84– 

26–20, Revision A, dated March 9, 2021. 

This service information describes 

procedures for doing a detailed visual 

inspection for chafing and proper 

clearance of the LH and RH MLG 

primary zone APD sensing lines, the 

hydraulic tube assemblies and the 

surrounding structure, and doing all 

applicable corrective actions. Corrective 

actions include repair and replacement 

of the APD sensing line and the 

hydraulic tube assembly. 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 the ADDRESSES section. 

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 the State 

of Design Authority, the FAA has been 

notified of the unsafe condition 

described in the MCAI and service 

information referenced above. The FAA 

is proposing this AD because the FAA 

evaluated all the relevant information 

and determined 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 service information already 

described. 

Costs of Compliance 

The FAA estimates that this AD, if 

adopted as proposed, would affect 54 

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 

5 work-hours × $85 per hour = $425 .......................................................................................... $0 $425 $22,950 

The FAA estimates the following 

costs to do any necessary on-condition 

actions that would be required based on 

the results of any required actions. The 

FAA has no way of determining the 

number of aircraft that might need these 

on-condition actions: 

ESTIMATED COSTS OF ON-CONDITION ACTIONS

Labor cost Parts cost Cost per product 

Up to 7 work-hours × $85 per hour = Up to $595 ................................................................................... Up to 12,643 ......... Up to $13,238. 

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: 

De Havilland Aircraft of Canada Limited 

(Type Certificate Previously Held by 

Bombardier, Inc.): Docket No. FAA– 

2021–0656; Project Identifier MCAI– 

2021–00394–T. 

(a) Comments Due Date 

The FAA must receive comments on this 

airworthiness directive (AD) by September 

27, 2021. 

(b) Affected ADs 

None. 

(c) Applicability 

This AD applies to De Havilland Aircraft 

of Canada Limited Model DHC–8–401 and 

–402 airplanes, certificated in any category, 

serial numbers 4001 and 4003 through 4614 

inclusive. 


lotter on DSK11XQN23PROD with PROPOSALS1
44326 Federal Register / Vol. 86, No. 153 / Thursday, August 12, 2021 / Proposed Rules 

(d) Subject 

Air Transport Association (ATA) of 

America Code 26, Fire protection. 

(e) Unsafe Condition 

This AD was prompted by reports of loss 

of hydraulic fluid and annunciation of the 

check fire detect light. The FAA is issuing 

this AD to address insufficient separation 

between the advanced pneumatic detector 

(APD) sensing line and surrounding 

components, which could lead to a hydraulic 

leak, loss of hydraulic systems and loss of 

fire detection in the main landing gear (MLG) 

primary zone should prolonged contact 

occur. 

(f) Compliance 

Comply with this AD within the 

compliance times specified, unless already 

done. 

(g) Inspection and Corrective Actions 

Within 48 months or 8,000 flight hours, 

whichever occurs first after the effective date 

of this AD: Do a detailed visual inspection for 

chafing and proper clearance of the left- and 

right-hand MLG primary zone APD sensing 

lines, the hydraulic tube assemblies and the 

surrounding structure, and do all applicable 

corrective actions, in accordance with 

paragraph 3.B. of the Accomplishment 

Instructions of De Havilland Aircraft of 

Canada Limited Service Bulletin 84–26–20, 

Revision A, dated March 9, 2021. Do all 

applicable corrective actions before further 

flight. 

(h) Credit for Previous Actions 

This paragraph provides credit for actions 

required by paragraph (g) of this AD, if those 

actions were performed before the effective 

date of this AD using De Havilland Aircraft 

of Canada Limited Service Bulletin 84–26– 

20, dated October 21, 2020. 

(i) Other FAA AD Provisions 

The following provisions also apply to this 

AD: 

(1) Alternative Methods of Compliance 

(AMOCs): The Manager, New York ACO 

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 certification office, 

send it to ATTN: Program Manager, 

Continuing Operational Safety, FAA, New 

York ACO Branch, 1600 Stewart Avenue, 

Suite 410, Westbury, NY 11590; telephone 

516–228–7300; fax 516–794–5531. 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, New York ACO Branch, 

FAA; or Transport Canada Civil Aviation 

(TCCA); or De Havilland Aircraft of Canada 

Limited’s TCCA Design Approval 

Organization (DAO). If approved by the DAO, 

the approval must include the DAOauthorized signature. 

(j) Related Information 

(1) Refer to Mandatory Continuing 

Airworthiness Information (MCAI) TCCA AD 

CF–2021–12, dated April 14, 2021, for related 

information. This MCAI may be found in the 

AD docket on the internet at https://

www.regulations.gov by searching for and 

locating Docket No. FAA–2021–0656. 

(2) For more information about this AD, 

contact Chirayu Gupta, Aerospace Engineer, 

Mechanical Systems and Administrative 

Services Section, FAA, New York ACO 

Branch, 1600 Stewart Avenue, Suite 410, 

Westbury, NY 11590; telephone 516–228– 

7300; fax 516–794–5531; email 9-avs-nyacocos@faa.gov. 

(3) For service information identified in 

this AD, contact De Havilland Aircraft of 

Canada Limited, Q-Series Technical Help 

Desk, 123 Garratt Boulevard, Toronto, 

Ontario M3K 1Y5, Canada; telephone 416– 

375–4000; fax 416–375–4539; email thd@

dehavilland.com; internet https://

dehavilland.com. You may view this service 

information 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. 

Issued on August 4, 2021. 

Lance T. Gant, 

Director, Compliance & Airworthiness 

Division, Aircraft Certification Service. 

[FR Doc. 2021–16935 Filed 8–11–21; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF HOMELAND 

SECURITY 

Coast Guard 

33 CFR Part 165 

[Docket Number USCG–2021–0623] 

RIN 1625–AA00 

Safety Zone; M/V ZHEN HUA 24, Crane 

Delivery Operation, Chesapeake Bay 

and Coastal Virginia 

AGENCY: Coast Guard, DHS. 

ACTION: Notice of proposed rulemaking. 

SUMMARY: The Coast Guard is proposing 

to establish a temporary moving safety 

zone around M/V ZHEN HUA 24 during 

its transit through certain waters of the 

Chesapeake Bay and Coastal Virginia. 

This action is necessary to provide for 

the safety of life on these navigable 

waters during the movement of the M/ 

V ZHEN HUA 24 while it is transporting 

four new Super-Post Panamax container 

cranes to the Port of Baltimore, 

anticipated to arrive between September 

4, 2021, and September 29, 2021. The 

Captain of the Port Virginia has 

determined that limited 

maneuverability and unique cargo of 

this vessel are potential hazardous to 

any person or vessel within the 

proposed safety zone. This proposed 

rulemaking would prohibit persons and 

vessels from being in the safety zone 

unless authorized by the Captain of the 

Port Virginia or a designated 

representative. We invite your 

comments on this proposed rulemaking. 

DATES: Comments and related material 

must be received by the Coast Guard on 

or before August 23, 2021. 

ADDRESSES: You may submit comments 

identified by docket number USCG– 

2021–0623 using the Federal Decision 

Making Portal at https://

www.regulations.gov. See the ‘‘Public 

Participation and Request for 

Comments’’ portion of the 

SUPPLEMENTARY INFORMATION section for 

further instructions on submitting 

comments. 

FOR FURTHER INFORMATION CONTACT: If 

you have questions about this proposed 

rulemaking, call or email Lieutenant 

Commander Ashley Holm, Sector 

Virginia Waterways Management 

division, U.S. Coast Guard; telephone 

757–668–5581, email 

VirginiaWaterways@uscg.mil. 

SUPPLEMENTARY INFORMATION: 

I. Table of Abbreviations 

CFR Code of Federal Regulations 

DHS Department of Homeland Security 

FR Federal Register 

NPRM Notice of proposed rulemaking 

§ Section 

U.S.C. United States Code 

CBBT Chesapeake Bay Bridge-Tunnel 

COTP Captain of the Port 

II. Background, Purpose, and Legal 

Basis 

On June 28, 2021, Ports America 

Chesapeake, LLC notified the Coast 

Guard that the M/V ZHEN HUA 24 will 

be transporting four new Super-Post 

Panamax container cranes to the Port of 

Baltimore. The vessel transit is taking 

place from Shanghai, China. The M/V 

ZHEN HUA 24 is anticipated to arrive 

between September 4, 2021, and 

September 29, 2021. The current 

estimated arrival date is September 5, 

2021, but is subject to change. These 

cranes will be delivered to, and 

installed at, the Seagirt Marine Terminal 

at Baltimore, MD. 

The cranes exceed the beam of the M/ 

V ZHEN HUA 24 on the port side by 

approximately 129 feet and on the 

starboard side by approximately 40 feet. 

The total beam for the vessel with the 

cranes aboard is approximately 300 feet. 

The maximum height of the cranes 

aboard the vessel is approximately 326 


lotter on DSK11XQN23PROD with PROPOSALS1