7690 Federal Register / Vol. 87, No. 28 / Thursday, February 10, 2022 / Rules and Regulations 

(i) European Aviation Safety Agency 

(EASA) AD 2018–0132, dated June 21, 2018. 

(ii) [Reserved] 

(3) For EASA AD 2018–0132, contact 

EASA, Konrad-Adenauer-Ufer 3, 50668 

Cologne, Germany; telephone +49 221 8999 

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

www.easa.europa.eu. You may find the 

EASA material on EASA website at https:// 

ad.easa.europa.eu. 

(4) You may view this service information 

at the FAA, Office of the Regional Counsel, 

Southwest Region, 10101 Hillwood Pkwy., 

Room 6N–321, Fort Worth, TX 76177. For 

information on the availability of this 

material at the FAA, call (817) 222–5110. 

This material may be found in the AD docket 

at https://www.regulations.gov by searching 

for and locating Docket No. FAA–2021–0964. 

(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: https:// 

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

Issued on January 11, 2022. 

Lance T. Gant, 

Director, Compliance & Airworthiness 

Division, Aircraft Certification Service. 

[FR Doc. 2022–02747 Filed 2–9–22; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2021–0694; Project 

Identifier MCAI–2021–00305–T; Amendment 

39–21919; AD 2022–03–02] 

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–8–401 and –402 airplanes. 

This AD was prompted by reports of a 

possible hard contact between the #2 

top high level sensor (HLS) terminal 

screw head and the #6 outer wing fuel 

access panel stiffener flange. This AD 

requires removing and replacing or 

reworking the #6 outer wing fuel access 

panel assembly. The FAA is issuing this 

AD to address the unsafe condition on 

these products. 

DATES: This AD is effective March 17, 

2022. 

The Director of the Federal Register 

approved the incorporation by reference 

of a certain publication listed in this AD 

as of March 17, 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–2021–0694. 

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– 

0694; 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: 

Thomas Niczky, Aerospace Engineer, 

Avionics and Electrical Systems 

Section, FAA, New York ACO Branch, 

1600 Stewart Avenue, Suite 410, 

Westbury, NY 11590; telephone 516– 

228–7347; fax 516–794–5531; email 9- 

avs-nyaco-cos@faa.gov. 

SUPPLEMENTARY INFORMATION: 

Discussion 

Transport Canada Civil Aviation 

(TCCA), which is the aviation authority 

for Canada, has issued TCCA AD CF– 

2021–08, dated March 9, 2021 (TCCA 

AD CF–2021–08) (also referred to after 

this as the Mandatory Continuing 

Airworthiness Information, or the 

MCAI), to correct an unsafe condition 

for De Havilland Aircraft of Canada 

Limited Model DHC–8–401 and –402 

airplanes, serial numbers 4001 and 4003 

through 4628 inclusive. You may 

examine the MCAI in the AD docket at 

https://www.regulations.gov by 

searching for and locating Docket No. 

FAA–2021–0694. 

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–8–401 and 

–402 airplanes. The NPRM published in 

the Federal Register on August 24, 2021 

(86 FR 47258). The NPRM was 

prompted by reports of a possible hard 

contact between the #2 top HLS 

terminal screw head and the #6 outer 

wing fuel access panel stiffener flange. 

The NPRM proposed to require 

removing and replacing or reworking 

the #6 outer wing fuel access panel 

assembly. The FAA is issuing this AD 

to address the possibility of electrical 

arcing during a lightning strike, which 

could be a source of ignition inside the 

fuel tank. 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. The Air Line Pilots 

Association, International, supported 

the NPRM. 

Request To Specify the Latest Revision 

of the Service Information 

Horizon Air requested that the 

specified service information in 

paragraphs (g)(1) and (2) of the proposed 

AD be updated to the latest revision: De 

Havilland Aircraft of Canada Limited 

Service Bulletin 84–57–35, Revision B, 

dated June 9, 2021. Horizon Air also 

requested that De Havilland Aircraft of 

Canada Limited Service Bulletin 84–57– 

35, Revision A, dated February 11, 2021, 

be added to paragraph (i) of the 

proposed AD in order to give credit for 

incorporating that revision. 

The FAA agrees, De Havilland 

Aircraft of Canada Limited Service 

Bulletin 84–57–35, Revision B, dated 

June 9, 2021, revises a NOTE and steps 

to include all part numbers of access 

panel #6. 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 B of the service 

information and Revision A of the 

service information, which was 

proposed as required in the NPRM. The 

FAA has updated this AD as requested. 

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 change described 


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Federal Register / Vol. 87, No. 28 / Thursday, February 10, 2022 / Rules and Regulations 7691 

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– 

57–35, Revision B, dated June 9, 2021. 

This service information describes 

procedures for replacing or reworking 

the #6 outer wing fuel access panel 

assembly. The rework involves an eddy 

current or fluorescent liquid penetrant 

inspection of the rework area for crack 

indications. 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 

affects 54 airplanes of U.S. registry. For 

either replacement or repair of the #6 

outer wing fuel access panel, depending 

on the option selected by the operator 

to comply with this AD, the FAA 

estimates the following costs: 

ESTIMATED COSTS

Action Labor cost Parts cost Cost per product 

Replacement ...... Up to 10 work-hours × $85 per hour = Up to $850 ............................................... Up to $16,430 ........ Up to $17,280. 

Repair ................ 13 work-hours × $85 per hour = $1,105 ................................................................ $49 ......................... $1,154. 

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. 

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: 

2022–03–02 De Havilland Aircraft of 

Canada Limited (Type Certificate 

Previously Held by Bombardier, Inc.): 

Amendment 39–21919; Docket No. 

FAA–2021–0694; Project Identifier 

MCAI–2021–00305–T. 

(a) Effective Date 

This airworthiness directive (AD) is 

effective March 17, 2022. 

(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 4628 

inclusive. 

(d) Subject 

Air Transport Association (ATA) of 

America Code 57, Wings. 

(e) Unsafe Condition 

This AD was prompted by reports of a 

possible hard contact between the #2 top 

high level sensor (HLS) terminal screw head 

and the #6 outer wing fuel access panel 

stiffener flange. The FAA is issuing this AD 

to address the possibility of electrical arcing 

during a lightning strike, which could be a 

source of ignition inside the fuel tank. 

(f) Compliance 

Comply with this AD within the 

compliance times specified, unless already 

done. 

(g) Required Actions 

Within 8,000 flight hours after the effective 

date of this AD: Do the actions specified in 

paragraph (g)(1) or (2) of this AD. 

(1) Replace the #6 outer wing fuel access 

panel assembly in accordance with Section 

3.B., Part A, of the Accomplishment 

Instructions of De Havilland Aircraft of 

Canada Limited Service Bulletin 84–57–35, 

Revision B, dated June 9, 2021. 

(2) Rework the #6 outer wing fuel access 

panel assembly, including an eddy current or 

fluorescent liquid penetrant inspection for 

crack indications of the rework area, in 

accordance with Section 3.B., Part B, of the 

Accomplishment Instructions of De 

Havilland Aircraft of Canada Limited Service 

Bulletin 84–57–35, Revision B, dated June 9, 

2021. If any crack indication is found, before 

further flight, repair using a method 

approved in accordance with the procedures 

specified in paragraph (j)(2) of this AD. 

(h) Parts Installation Prohibition 

As of the effective date of this AD, no 

person may install a #6 outer wing fuel 

access panel assembly, part numbers (P/Ns) 

85714233–003/–004 and 85714233–005/– 

006, on any airplane. 


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7692 Federal Register / Vol. 87, No. 28 / Thursday, February 10, 2022 / Rules and Regulations 

(i) 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 84–57– 

35, dated October 1, 2020; or De Havilland 

Aircraft of Canada Limited Service Bulletin 

84–57–35, Revision A, dated February 11, 

2021. 

(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–2021–08, dated March 9, 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–2021–0694. 

(2) For more information about this AD, 

contact Thomas Niczky, Aerospace Engineer, 

Avionics and Electrical Systems Section, 

FAA, New York ACO Branch, 1600 Stewart 

Avenue, Suite 410, Westbury, NY 11590; 

telephone 516–228–7347; 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)(4) and (5) 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 84–57–35, Revision B, dated 

June 9, 2021. 

(ii) [Reserved] 

(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: http:// 

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

Issued on January 19, 2022. 

Lance T. Gant, 

Director, Compliance & Airworthiness 

Division, Aircraft Certification Service. 

[FR Doc. 2022–02754 Filed 2–9–22; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2021–0960; Project 

Identifier 2019–CE–021–AD; Amendment 

39–21921; AD 2022–03–04] 

RIN 2120–AA64 

Airworthiness Directives; Viking Air 

Limited (Type Certificate Previously 

Held by Bombardier, Inc. and de 

Havilland, Inc.) Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Final rule. 

SUMMARY: The FAA is superseding 

Airworthiness Directive (AD) 80–13–10, 

AD 80–13–12 R1, and AD 2008–03–01, 

which applied to certain de Havilland 

(type certificate now held by Viking Air 

Limited) Model DHC–6–1, DHC–6–100, 

DHC–6–200, and DHC–6–300 airplanes. 

AD 80–13–10 required repetitively 

inspecting the main landing gear (MLG) 

legs for cracks and corrosion. AD 80– 

13–12 R1 required repetitively 

inspecting each engine nacelle lower 

longeron for cracks and buckling. AD 

2008–03–01 required incorporating 

inspections, modifications, and life 

limits of certain structural components 

into the aircraft maintenance program. 

Since the FAA issued those ADs, new 

and more restrictive airworthiness 

limitations have been issued for certain 

structural components. This AD 

requires incorporating into maintenance 

records new or revised life limits, 

modification limits, and inspection or 

overhaul intervals. The FAA is issuing 

this AD to address the unsafe condition 

on these products. 

DATES: This AD is effective March 17, 

2022. 

The Director of the Federal Register 

approved the incorporation by reference 

of a certain publication listed in this AD 

as of March 17, 2022. 

ADDRESSES: For service information 

identified in this final rule, contact 

Viking Air Limited Technical Support, 

1959 De Havilland Way, Sidney, British 

Columbia, Canada, V8L 5V5; phone: 

(North America) (800) 663–8444; fax: 

(250) 656–0673; email: 

technical.support@vikingair.com; 

website: https://www.vikingair.com/ 

support/service-bulletins. You may view 

this service information at the FAA, 

Airworthiness Products Section, 

Operational Safety Branch, 901 Locust, 

Kansas City, MO 64106. For information 

on the availability of this material at the 

FAA, call (817) 222–5110. It is also 

available at https://www.regulations.gov 

by searching for and locating Docket No. 

FAA–2021–0960. 

Examining the AD Docket 

You may examine the AD docket at 

https://www.regulations.gov by 

searching for and locating Docket No. 

FAA–2021–0960; 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: Aziz 

Ahmed, Aviation Safety Engineer, New 

York ACO Branch, FAA, 1600 Stewart 

Avenue, Suite 410, Westbury, NY 

11590; phone: (516) 228–7329; fax: (516) 

794–5531; email: aziz.ahmed@faa.gov. 

SUPPLEMENTARY INFORMATION: 

Background 

The FAA issued a notice of proposed 

rulemaking (NPRM) to amend 14 CFR 

part 39 to supersede AD 80–13–10, 

Amendment 39–3812 (45 FR 43155, 

June 26, 1980) (AD 80–13–10); AD 80– 

13–12 R1, Amendment 39–4135 (46 FR 

31251, June 15, 1981) (AD 80–13–12 

R1); and AD 2008–03–01, Amendment 

39 15350 (73 FR 5729, January 31, 2008) 


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