Federal Register / Vol. 87, No. 18 / Thursday, January 27, 2022 / Rules and Regulations 4145 

intervals, or CDCCLs may be used unless the 

actions, intervals, and CDCCLs are approved 

as an alternative method of compliance 

(AMOC) in accordance with the procedures 

specified in paragraph (l) of this AD. 

(k) Terminating Actions for Certain AD 

Requirements 

Accomplishment of the revision required 

by paragraph (g) of this AD terminates the 

requirements specified in paragraphs (k)(1) 

and (2) of this AD for that airplane. 

(1) All requirements of AD 2012–12–15. 

(2) The requirements in paragraph (i)(2) of 

AD 2018–20–13. 

(l) Alternative Methods of Compliance 

(AMOCs) 

(1) The Manager, Los Angeles 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 the attention of 

the person identified in Related Information. 

Information may be emailed to: 9-AWPLAACO-ADS@faa.gov. 

(2) Before using any approved AMOC, 

notify your appropriate principal inspector, 

or lacking a principal inspector, the manager 

of the responsible Flight Standards Office. 

(3) An AMOC that provides an acceptable 

level of safety may be used for any repair, 

modification, or alteration required by this 

AD if it is approved by The Boeing Company 

Organization Designation Authorization 

(ODA) that has been authorized by the 

Manager, Los Angeles ACO Branch, FAA, to 

make those findings. To be approved, the 

repair method, modification deviation, or 

alteration deviation must meet the 

certification basis of the airplane, and the 

approval must specifically refer to this AD. 

(m) Related Information 

For more information about this AD, 

contact Samuel Lee, Aerospace Engineer, 

Propulsion Section, FAA, Los Angeles ACO 

Branch, 3960 Paramount Blvd., Lakewood, 

CA 90712–4102; phone: 562–627–5262; 

email: samuel.lee@faa.gov. 

(n) 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 the AD specifies otherwise. 

(i) Boeing 757 Maintenance Planning Data 

(MPD) Document, Section 9, Airworthiness 

Limitations (AWLs) and Certification 

Maintenance Requirements (CMRs), 

D622N001–9, dated September 2020. 

(ii) [Reserved] 

(3) For service information identified in 

this AD, contact Boeing Commercial 

Airplanes, Attention: Contractual & Data 

Services (C&DS), 2600 Westminster Blvd., 

MC 110–SK57, Seal Beach, CA 90740–5600; 

telephone 562–797–1717; internet https://

www.myboeingfleet.com. 

(4) 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. 

(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, 

fr.inspection@nara.gov, or go to: https://

www.archives.gov/federal-register/cfr/ibrlocations.html. 

Issued on December 17, 2021. 

Lance T. Gant, 

Director, Compliance & Airworthiness 

Division, Aircraft Certification Service. 

[FR Doc. 2022–01568 Filed 1–26–22; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2021–0514; Project 

Identifier MCAI–2020–01570–T; Amendment 

39–21890; AD 2022–01–02] 

RIN 2120–AA64 

Airworthiness Directives; De Havilland 

Aircraft of Canada Limited (Type 

Certificate Previously Held by 

Bombardier, Inc.) Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), Department of 

Transportation (DOT). 

ACTION: Final rule. 

SUMMARY: The FAA is adopting a new 

airworthiness directive (AD) for certain 

De Havilland Aircraft of Canada Limited 

Model DHC–8–400, –401, and –402 

airplanes. This AD was prompted by a 

report that the epoxy primer on the 

internal bore of the nacelle and landing 

gear attachment pins was not applied, 

and corrosion on the internal bore of the 

wing rear spar attachment pins was 

found. This AD requires doing a 

detailed visual inspection of the nacelle 

to wing rear spar attachment pins, and 

the nacelle and landing gear attachment 

pins, for any corrosion, and doing all 

applicable corrective actions. The FAA 

is issuing this AD to address the unsafe 

condition on these products. 

DATES: This AD is effective March 3, 

2022. 

The Director of the Federal Register 

approved the incorporation by reference 

of certain publications listed in this AD 

as of March 3, 2022. 

ADDRESSES: For service information 

identified in this final rule, 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. 

It is also available on the internet at 

https://www.regulations.gov by 

searching for and locating Docket No. 

FAA–2021–0514. 

Examining the AD Docket 

You may examine the AD docket on 

the internet at https://

www.regulations.gov by searching for 

and locating Docket No. FAA–2021– 

0514; 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, 

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. 

FOR FURTHER INFORMATION CONTACT: 

Deep Gaurav, Aerospace Engineer, 

Airframe and Propulsion 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: 

Background 

Transport Canada Civil Aviation 

(TCCA), which is the aviation authority 

for Canada, has issued TCCA AD CF– 

2020–51R1, dated February 24, 2021 

(also referred to as the Mandatory 

Continuing Airworthiness Information, 

or the MCAI), to correct an unsafe 

condition for certain De Havilland 

Aircraft of Canada Limited Model DHC– 

8–400, –401, and –402 airplanes. You 

may examine the MCAI in the AD 

docket on the internet at https://

www.regulations.gov by searching for 

and locating Docket No. FAA–2021– 

0514. 

The FAA issued a notice of proposed 

rulemaking (NPRM) to amend 14 CFR 

part 39 by adding an AD that would 

apply to certain De Havilland Aircraft of 

Canada Limited Model DHC–8–400, 

–401, and –402 airplanes. The NPRM 

published in the Federal Register on 

June 29, 2021 (86 FR 34163). The NPRM 

was prompted by a report that the epoxy 


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4146 Federal Register / Vol. 87, No. 18 / Thursday, January 27, 2022 / Rules and Regulations 

primer on the internal bore of the 

nacelle and landing gear attachment 

pins was not applied, and corrosion on 

the internal bore of the wing rear spar 

attachment pins was found. The NPRM 

proposed to require doing a detailed 

visual inspection of the nacelle to wing 

rear spar attachment pins, and the 

nacelle and landing gear attachment 

pins, for any corrosion, and doing all 

applicable corrective actions. The FAA 

is issuing this AD to address premature 

corrosion and subsequent failure of the 

nacelle to landing gear and nacelle to 

rear wing spar attachment pins, which 

if undetected, could lead to a single or 

dual collapse of the main landing gear. 

See the MCAI for additional background 

information. 

Comments 

The FAA gave the public the 

opportunity to participate in developing 

this final rule. The following presents 

the comments received on the NPRM 

and the FAA’s response to each 

comment. 

Request To Use the Latest Service 

Information 

Horizon Air requested that the latest 

service information be used in the 

proposed AD. Horizon Air stated that 

since the NPRM was issued, the 

applicable service information specified 

in figure 1 to paragraph (g) of the 

proposed AD has been revised to De 

Havilland Aircraft of Canada Limited 

Service Bulletin 84–54–31, Revision C, 

dated March 15, 2021. Horizon Air also 

requested that paragraph (h)(3) of the 

proposed AD be revised to allow credit 

for De Havilland Aircraft of Canada 

Limited Service Bulletin 84–54–31, 

Revision B, dated February 21, 2020, if 

those actions were performed before the 

effective date of the proposed AD. 

The FAA agrees to use the latest 

service information in this AD. De 

Havilland Aircraft of Canada Limited 

Service Bulletin 84–54–31, Revision C, 

dated March 15, 2021, adds information 

to the ‘‘Effectivity’’ section for 

production airplanes, i.e., specifying 

airplane line numbers that will have 

certain ModSums (for application of 

primer and corrosion preventive 

compound) installed before delivery. 

This information does not affect the 

applicability of this AD. 

De Havilland Aircraft of Canada 

Limited Service Bulletin 84–54–31, 

Revision C, dated March 15, 2021, also 

adds additional acceptable polyurethane 

enamel, and clarifies that production 

pins can be used to replace corroded 

pins. These changes do not affect 

operators who use previous revisions of 

the service information to show 

compliance with this AD. There are no 

substantive changes to the procedures 

between Revision C of the service 

information and Revision B, which was 

proposed as required in the NPRM. 

Further, the technical content of this AD 

and the service information remains 

unchanged. The FAA has revised the 

‘‘Related Service Information Under 1 

CFR part 51’’ paragraph, Figure 1 to 

paragraph (g) of this AD, and paragraphs 

(g)(2) and (i) of this AD accordingly. The 

FAA has also added paragraph (h)(4) of 

this AD to specify the requested credit. 

Conclusion 

The FAA reviewed the relevant data, 

considered the comments received, and 

determined that air safety and the 

public interest require adopting this 

final rule with the changes described 

previously and minor editorial changes. 

The FAA has determined that these 

minor changes: 

• Are consistent with the intent that 

was proposed in the NPRM for 

addressing the unsafe condition; and 

• Do not add any additional burden 

upon the public than was already 

proposed in the NPRM. 

The FAA also determined that these 

changes will not increase the economic 

burden on any operator or increase the 

scope of this final rule. 

Related Service Information Under 1 

CFR Part 51 

De Havilland Aircraft of Canada 

Limited has issued Service Bulletin 84– 

54–28, Revision B, dated January 24, 

2020; and Service Bulletin 84–54–31, 

Revision C, dated March 15, 2021. This 

service information describes 

procedures for doing a detailed visual 

inspection of the nacelle to wing rear 

spar attachment pins, and the nacelle 

and landing gear attachment pins, for 

any corrosion; and doing all applicable 

corrective actions. Corrective actions 

include applying epoxy primer to the 

bore surface of the pins, a fluorescent 

magnetic particle inspection for any 

cracking, corrosion removal, reworking 

and part marking certain pins, and 

replacing any cracked or corroded pins 

with serviceable pins. These documents 

are distinct since they apply to different 

airplane configurations. 

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. 

Costs of Compliance 

The FAA estimates that this AD will 

affect 41 airplanes of U.S. registry. The 

FAA estimates the following costs to 

comply with this AD: 

ESTIMATED COSTS FOR REQUIRED ACTIONS

Labor cost Parts cost Cost per 

product 

Cost on U.S. 

operators 

Up to 9 work-hours × $85 per hour = Up to $765 ...................................................... $0 Up to $765 ............. Up to $31,365. 

The FAA has received no definitive 

data on which to base the cost estimates 

for the on-condition actions specified in 

this AD. 

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 


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Federal Register / Vol. 87, No. 18 / Thursday, January 27, 2022 / Rules and Regulations 4147 

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. 

Adoption of 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 adding 

the following new airworthiness 

directive: 

2022–01–02 De Havilland Aircraft of 

Canada Limited (Type Certificate 

Previously Held by Bombardier, Inc.): 

Amendment 39–21890; Docket No. 

FAA–2021–0514; Project Identifier 

MCAI–2020–01570–T. 

(a) Effective Date 

This airworthiness directive (AD) is 

effective March 3, 2022. 

(b) Affected ADs 

None. 

(c) Applicability 

This AD applies to De Havilland Aircraft 

of Canada Limited (type certificate 

previously held by Bombardier, Inc.) Model 

DHC–8–400, –401, and –402 airplanes, 

certificated in any category, serial numbers 

4001, 4003 through 4550 inclusive, 4583 

through 4585 inclusive, 4587, 4588, and 

4590. 

(d) Subject 

Air Transport Association (ATA) of 

America Code 54, Nacelles/pylons. 

(e) Unsafe Condition 

This AD was prompted by a report that the 

epoxy primer on the internal bore of the 

nacelle and landing gear attachment pins was 

not applied, and corrosion on the internal 

bore of the wing rear spar attachment pins 

was found. The FAA is issuing this AD to 

address premature corrosion and subsequent 

failure of the nacelle to landing gear and 

nacelle to rear wing spar attachment pins, 

which if undetected, could lead to a single 

or dual collapse of the main landing gear. 

(f) Compliance 

Comply with this AD within the 

compliance times specified, unless already 

done. 

(g) Inspection and Corrective Actions 

(1) At the applicable compliance times 

specified in paragraphs (g)(1)(i) through (iii) 

of this AD: Do a detailed visual inspection of 

the nacelle to wing rear spar attachment pins, 

and the nacelle and landing gear attachment 

pins, for any cracking or corrosion, and do 

all applicable corrective actions, in 

accordance with Part A or Part B, as 

applicable, of Section 3., ‘‘Accomplishment 

Instructions,’’ of the applicable service 

information specified in figure 1 to paragraph 

(g) of this AD. Do all applicable corrective 

actions before further flight. 

(i) For nacelle to wing rear spar attachment 

pins, or nacelle and landing gear attachment 

pins, as applicable, that have accumulated 

less than 26,000 flight cycles as of the 

effective date of this AD, and have been in 

service less than 12 years from their entryinto-service as of the effective date of this 

AD: Prior to the pins reaching 14 years from 

their entry-into-service, or prior to the 

airplane reaching 30,000 total flight cycles, 

whichever occurs first. 

(ii) For nacelle to wing rear spar 

attachment pins, or nacelle and landing gear 

attachment pins, as applicable, that have 

accumulated 26,000 flight cycles or more as 

of the effective date of this AD, or have been 

in service 12 years or more from their entryinto-service as of the effective date of this 

AD: Within 4 years or 8,000 flight hours after 

the effective date of this AD, whichever 

occurs first. 

(iii) For airplanes on which the actions 

specified in Bombardier Service Bulletin 84– 

54–27, dated August 11, 2017; or Bombardier 

Service Bulletin 84–54–28, dated August 11, 

2017; as applicable, have been accomplished: 

Within 14 years or 30,000 flight cycles after 

the date of incorporation of Bombardier 

Service Bulletin 84–54–27, dated August 11, 

2017; or Bombardier Service Bulletin 84–54– 

28, dated August 11, 2017; as applicable, 

whichever occurs first. 

(2) For serial numbers 4583, 4584, 4585, 

4587, 4588 and 4590: At the applicable 

compliance times specified in paragraphs 

(g)(1)(i) through (iii) of this AD, re-part mark 

the yoke attachment pin, in accordance with 

Part B of the Accomplishment Instructions of 

De Havilland Aircraft of Canada Limited 

Service Bulletin 84–54–31, Revision C, dated 

March 15, 2021. 

(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 the applicable service 

information specified in paragraphs (h)(1) 

through (4) of this AD. 

(1) Bombardier Service Bulletin 84–54–28, 

Revision A, dated April 10, 2019. 

(2) Bombardier Service Bulletin 84–54–31, 

dated May 1, 2019. 

(3) Bombardier Service Bulletin 84–54–31, 

Revision A, dated October 15, 2019. 

(4) De Havilland Aircraft of Canada 

Limited Service Bulletin 84–54–31, Revision 

B, dated February 21, 2020. 

(i) No Reporting Requirement 

Although De Havilland Aircraft of Canada 

Limited Service Bulletin 84–54–28, Revision 

B, dated January 24, 2020; and De Havilland 


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Figure 1 to paragraph (g) - Service Information 

Serial Numbers- Service Information4001, 4003 through 4550 De Havilland Aircraft of Canada Limited Service 

inclusive Bulletin 84-54-28, Revision B, dated January 24, 2020 

4001, 4003 through 4533 De Havilland Aircraft of Canada Limited Service 

inclusive, 4583 through Bulletin 84-54-31, Revision C, dated March 15, 2021 

4585 inclusive, 4587, 

4588 and 4590 
4148 Federal Register / Vol. 87, No. 18 / Thursday, January 27, 2022 / Rules and Regulations 

Aircraft of Canada Limited Service Bulletin 

84–54–31, Revision C, dated March 15, 2021; 

specify to submit certain information to the 

manufacturer, this AD does not include that 

requirement. 

(j) 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. 

(k) Related Information 

(1) Refer to Mandatory Continuing 

Airworthiness Information (MCAI) TCCA AD 

CF–2020–51R1, dated February 24, 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–2021–0514. 

(2) For more information about this AD, 

contact Deep Gaurav, Aerospace Engineer, 

Airframe and Propulsion 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. 

(3) Service information identified in this 

AD that is not incorporated by reference is 

available at the addresses specified in 

paragraphs (l)(3) and (4) of this AD. 

(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) De Havilland Aircraft of Canada Limited 

Service Bulletin 84–54–28, Revision B, dated 

January 24, 2020. 

(ii) De Havilland Aircraft of Canada 

Limited Service Bulletin 84–54–31, Revision 

C, dated March 15, 2021. 

(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. 

(4) 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. 

(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: 

https://www.archives.gov/federal-register/cfr/ 

ibr-locations.html. 

Issued on December 21, 2021. 

Lance T. Gant, 

Director, Compliance & Airworthiness 

Division, Aircraft Certification Service. 

[FR Doc. 2022–01569 Filed 1–26–22; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2021–0615; Project 

Identifier MCAI–2021–00177–T; Amendment 

39–21886; AD 2021–26–27] 

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: Final rule. 

SUMMARY: The FAA is adopting a new 

airworthiness directive (AD) for certain 

Airbus Canada Limited Partnership 

Model BD–500–1A10 and BD–500– 

1A11 airplanes. This AD was prompted 

by a report indicating that during 

production, the manual opening and 

closing of the over-wing emergency exit 

door (OWEED) prior to the installation 

of the OWEED interior panel could have 

resulted in damaged insulation blankets 

below the left and right OWEEDs. This 

AD requires a one-time inspection for 

damage of the insulation blankets below 

the left and right OWEEDs, and 

replacement if necessary, as specified in 

a Transport Canada Civil Aviation 

(TCCA) 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 March 3, 

2022. 

The Director of the Federal Register 

approved the incorporation by reference 

of a certain publication listed in this AD 

as of March 3, 2022. 

ADDRESSES: For material incorporated 

by reference (IBR) in this AD, contact 

the TCCA, Transport Canada National 

Aircraft Certification, 159 Cleopatra 

Drive, Nepean, Ontario, K1A 0N5, 

Canada; telephone 888–663–3639; email 

AD-CN@tc.gc.ca; internet https://

tc.canada.ca/en/aviation. You may view 

this IBR 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 on 

the internet at https://

www.regulations.gov by searching for 

and locating Docket No. FAA–2021– 

0615. 

Examining the AD Docket 

You may examine the AD docket at 

https://www.regulations.gov by 

searching for and locating Docket No. 

FAA–2021–0615; 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. 

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; fax 516–794–5531; email 

9-avs-nyaco-cos@faa.gov. 

SUPPLEMENTARY INFORMATION: 

Background 

TCCA, which is the aviation authority 

for Canada, issued TCCA AD CF–2021– 

03 on February 11, 2021 (TCCA AD CF– 

2021–03) (also referred to as the 

Mandatory Continuing Airworthiness 

Information, or the MCAI), to correct an 

unsafe condition for certain Airbus 

Canada Limited Partnership Model BD– 

500–1A10 and BD–500–1A11 airplanes. 

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 Canada Limited 

Partnership Model BD–500–1A10 and 


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