24476 Federal Register / Vol. 87, No. 80 / Tuesday, April 26, 2022 / Proposed Rules 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2022–0470; Project 

Identifier MCAI–2021–01002–T] 

RIN 2120–AA64 

Airworthiness Directives; 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 all 

Bombardier, Inc., Model BD–700–1A10 

and BD–700–1A11 airplanes. This 

proposed AD was prompted by reports 

that some oxygen box assemblies had 

their piston ejected during the mask 

deployment test. This proposed AD 

would require a one-time inspection of 

each passenger oxygen box dual 

manifold assembly to find and replace 

affected parts. This proposed AD would 

also prohibit installing affected parts. 

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 June 10, 2022. 

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 Bombardier 

Business Aircraft Customer Response 

Center, 400 Coˆte-Vertu Road West, 

Dorval, Que ́bec H4S 1Y9, Canada; 

telephone 514–855–2999; email ac.yul@

aero.bombardier.com; internet https://

www.bombardier.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–2022–0470; 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: 

Elizabeth Dowling, 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; 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–2022–0470; Project Identifier 

MCAI–2021–01002–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 Elizabeth Dowling, 

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; 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– 

2021–30, dated September 7, 2021 

(TCCA AD CF–2021–30) (also referred 

to after this as the Mandatory 

Continuing Airworthiness Information, 

or the MCAI), to correct an unsafe 

condition for all Bombardier, Inc., 

Model BD–700–1A10 and BD–700– 

1A11 airplanes. You may examine the 

MCAI in the AD docket at https://

www.regulations.gov by searching for 

and locating Docket No. FAA–2022– 

0470. 

This proposed AD was prompted by 

reports that some passenger oxygen box 

dual manifold assemblies had their 

piston ejected during the mask 

deployment test due to a nonconformity in manufacturing. The FAA 

is proposing this AD to address a 

possible in-service piston ejection when 

used for emergency descent, smoke, or 

fire that may result in a high rate of 

oxygen leakage, which could 

prematurely deplete the oxygen for all 

passengers. See the MCAI for additional 

background information. 

Related Service Information Under 1 

CFR Part 51 

Bombardier, Inc., has issued the 

following service information. 

• Service Bulletin 700–35–5004, 

Revision 02, dated August 27, 2021. 

• Service Bulletin 700–35–5502, 

dated August 27, 2021. 

• Service Bulletin 700–35–6004, 

Revision 05, dated August 27, 2021. 

• Service Bulletin 700–35–6502, 

dated August 27, 2021. 

This service information describes 

procedures for inspecting each 

passenger oxygen box dual manifold 

assembly to find affected parts, and 

replacing affected parts. These 

documents are distinct because they 

apply to different airplane 

configurations. 

This service information is reasonably 

available because the interested parties 

have access to it through their normal 


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Federal Register / Vol. 87, No. 80 / Tuesday, April 26, 2022 / Proposed Rules 24477 

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 308 

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 

1 work-hour × $85 per hour = $85 .............................................................................................. $0 $85 $26,180 

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 this 

on-condition action: 

ESTIMATED COSTS OF ON-CONDITION ACTIONS

Labor cost Parts cost Cost per 

product 

Up to 34 work-hours × $85 per hour = $2,890 ................................................................................................. Up to $1,700 ..... Up to $4,590. 

The FAA has included all known 

costs in its cost estimate. According to 

the manufacturer, however, some or all 

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: 

Bombardier, Inc.: Docket No. FAA–2022– 

0470; Project Identifier MCAI–2021– 

01002–T. 

(a) Comments Due Date 

The FAA must receive comments on this 

airworthiness directive (AD) by June 10, 

2022. 

(b) Affected ADs 

None. 

(c) Applicability 

This AD applies to all Bombardier, Inc., 

Model BD–700–1A10 and BD–700–1A11 

airplanes, certificated in any category. 

(d) Subject 

Air Transport Association (ATA) of 

America Code 35, Oxygen. 

(e) Unsafe Condition 

This AD was prompted by reports that 

some passenger oxygen box dual manifold 

had their piston ejected during the mask 

deployment test due to a non-conformity in 

manufacturing. The FAA is issuing this AD 

to address a possible in-service piston 

ejection when used for emergency descent, 

smoke, or fire that may result in a high rate 

of oxygen leakage, which could prematurely 

deplete the oxygen for all passengers. 


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24478 Federal Register / Vol. 87, No. 80 / Tuesday, April 26, 2022 / Proposed Rules 

(f) Compliance 

Comply with this AD within the 

compliance times specified, unless already 

done. 

(g) Definition 

An affected part is a passenger oxygen box 

assembly having a dual manifold assembly 

having part number 100–009–39 and a lot 

and serial number specified in figure 1 to 

paragraph (g) of this AD. 

BILLING CODE 4910–13–P 

(h) Required Actions 

Within the applicable compliance time 

specified in paragraph (h)(1) or (2) of this AD: 

Inspect each passenger oxygen box dual 

manifold assembly to determine if it is an 

affected part, as defined in paragraph (g) of 

this AD, and replace any affected part in 

accordance with paragraph 2.B. of the 

Accomplishment Instructions of the 

applicable Bombardier service bulletin 

specified in figure 2 to paragraph (h) of this 

AD. Replace any affected part before further 

flight. 

(1) For airplanes having serial numbers 

9771, 9779, 9784, 9788 through 9824 

inclusive, 9853 through 9857 inclusive, and 

9859 through 9876 inclusive, within 4 

months after the effective date of this AD. 

(2) For airplane having serial numbers 

9877 through 9879 inclusive, and 60001 

through 60042 inclusive, within 30 months 

after the effective date of this AD. 

(i) Parts Installation Prohibition 

As of the effective date of this AD, no 

person may install an affected part as defined 

in paragraph (g) of this AD, on any airplane. 

(j) Credit for Previous Actions 

This paragraph provides credit for actions 

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

actions were performed before the effective 

date of this AD using the service information 

specified in paragraphs (j)(1) through (7) of 

this AD, as applicable. 

(1) Bombardier Service Bulletin 700–35– 

5004, dated December 10, 2018. 

(2) Bombardier Service Bulletin 700–35– 

5004, Revision 01, dated November 29, 2019. 


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Federal Register / Vol. 87, No. 80 / Tuesday, April 26, 2022 / Proposed Rules 24479 

(3) Bombardier Service Bulletin 700–35– 

6004, dated December 10, 2018. 

(4) Bombardier Service Bulletin 700–35– 

6004, Revision 01, dated January 16, 2019. 

(5) Bombardier Service Bulletin 700–35– 

6004, Revision 02, dated April 5, 2019. 

(6) Bombardier Service Bulletin 700–35– 

6004, Revision 03, dated May 31, 2019. 

(7) Bombardier Service Bulletin 700–35– 

6004, Revision 04, dated November 29, 2019. 

(k) 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. 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 Bombardier, Inc.’s TCCA Design 

Approval Organization (DAO). If approved by 

the DAO, the approval must include the 

DAO-authorized signature. 

(l) Related Information 

(1) Refer to Mandatory Continuing 

Airworthiness Information (MCAI) TCCA AD 

CF–2021–30, dated September 7, 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–2022–0470. 

(2) For more information about this AD, 

contact Elizabeth Dowling, 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; email 9-avs-nyaco-cos@

faa.gov. 

(3) For service information identified in 

this AD, contact Bombardier Business 

Aircraft Customer Response Center, 400 CoˆteVertu Road West, Dorval, Que ́bec H4S 1Y9, 

Canada; telephone 514–855–2999; email 

ac.yul@aero.bombardier.com; internet 

https://www.bombardier.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 April 20, 2022. 

Lance T. Gant, 

Director, Compliance & Airworthiness 

Division, Aircraft Certification Service. 

[FR Doc. 2022–08822 Filed 4–25–22; 8:45 am] 

BILLING CODE 4910–13–C 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 71 

[Docket No. FAA–2022–0440; Airspace 

Docket No. 19–AAL–45] 

RIN 2120–AA66 

Proposed Establishment of United 

States Area Navigation (RNAV) Route 

T–376 in the Vicinity of Iliamna, AK 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Notice of proposed rulemaking 

(NPRM). 

SUMMARY: This action proposes to 

establish United States Area Navigation 

(RNAV) route, in the vicinity of Iliamna, 

AK. This action is in support of a large 

and comprehensive RNAV T-route 

modernization project for the state of 

Alaska. 

DATES: Comments must be received on 

or before June 10, 2022. 

ADDRESSES: Send comments on this 

proposal to the U.S. Department of 

Transportation, Docket Operations, 1200 

New Jersey Avenue SE, West Building, 

Ground Floor Room W12–140, 

Washington, DC 20590; telephone: (800) 

647–5527, or (202) 366–9826. You must 

identify FAA Docket No. FAA–2022–

0440; Airspace Docket No. 19–AAL–45 

at the beginning of your comments. You 

may also submit comments through the 

internet at https://www.regulations.gov. 

FAA Order JO 7400.11F, Airspace 

Designations and Reporting Points, and 

subsequent amendments can be viewed 

online at https://www.faa.gov/air_

traffic/publications/. For further 

information, you can contact the Rules 

and Regulations Group, Federal 

Aviation Administration, 800 

Independence Avenue SW, Washington, 

DC 20591; telephone: (202) 267–8783. 

FOR FURTHER INFORMATION CONTACT: 

Jesse Acevedo, Rules and Regulations 

Group, Office of Policy, Federal 

Aviation Administration, 800 

Independence Avenue SW, Washington, 

DC 20591; telephone: (202) 267–8783. 

SUPPLEMENTARY INFORMATION: 

Authority for This Rulemaking 

The FAA’s authority to issue rules 

regarding aviation safety is found in 

Title 49 of the United States Code. 

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. This rulemaking is 

promulgated under the authority 

described in Subtitle VII, Part A, 

Subpart I, Section 40103. Under that 

section, the FAA is charged with 

prescribing regulations to assign the use 

of the airspace necessary to ensure the 

safety of aircraft and the efficient use of 

airspace. This regulation is within the 

scope of that authority as it would 

expand the availability of RNAV in 

Alaska and improve the efficient flow of 

air traffic within the National Airspace 

System (NAS) by lessoning the 

dependency on ground based 

navigation. 

Comments Invited 

Interested parties are invited to 

participate in this proposed rulemaking 

by submitting such written data, views, 

or arguments as they may desire. 

Comments that provide the factual basis 

supporting the views and suggestions 

presented are particularly helpful in 

developing reasoned regulatory 

decisions on the proposal. Comments 

are specifically invited on the overall 

regulatory, aeronautical, economic, 

environmental, and energy-related 

aspects of the proposal. 

Communications should identify both 

docket numbers (FAA Docket No. FAA– 

2022–0440; Airspace Docket No. 19– 

AAL–45) and be submitted in triplicate 

to the Docket Management Facility (see 

ADDRESSES section for address and 

phone number). You may also submit 

comments through the internet at 

https://www.regulations.gov. 

Commenters wishing the FAA to 

acknowledge receipt of their comments 

on this action must submit with those 

comments a self-addressed, stamped 

postcard on which the following 

statement is made: ‘‘Comments to FAA 

Docket No. FAA–2022–0440; Airspace 

Docket No. 19–AAL–45.’’ The postcard 

will be date/time stamped and returned 

to the commenter. 

All communications received on or 

before the specified comment closing 

date will be considered before taking 

action on the proposed rule. The 

proposal contained in this action may 

be changed in light of comments 

received. All comments submitted will 

be available for examination in the 

public docket both before and after the 

comment closing date. A report 

summarizing each substantive public 

contact with FAA personnel concerned 

with this rulemaking will be filed in the 

docket. 


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