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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Federal Register / Vol. 87, No. 28 / Thursday, February 10, 2022 / Rules and Regulations 7693 

(AD 2008–03–01). AD 80–13–10 applied 

to de Havilland (type certificate now 

held by Viking Air Limited) Model 

‘‘DHC–6 type’’ airplanes with certain 

MLG legs and required repetitively 

inspecting the weld juncture at the Yjoint of the MLG legs for cracks and 

corrosion. AD 80–13–12 R1 applied to 

certain serial-numbered de Havilland 

(now Viking Air Limited) Model ‘‘DHC– 

6 type’’ airplanes with intermediate or 

high floatation tires, skis, or floats and 

required repetitively inspecting each 

engine nacelle lower longeron for cracks 

and buckling. AD 2008–03–01 applied 

to all Viking Air Limited Model DHC– 

6–1, DHC–6–100, DHC–6–200, and 

DHC–6–300 airplanes and required 

incorporating the inspections, 

modifications, and life limits 

(retirement) of certain structural 

components, as contained in Revision 5 

of the DHC–6 Product Support Manual 

(PSM) 1–6–11, into the aircraft 

maintenance program. The NPRM 

published in the Federal Register on 

November 8, 2021 (86 FR 61719). 

The NPRM was prompted by 

Canadian AD CF–2019–02, dated 

January 9, 2019 (referred to after this as 

‘‘the MCAI’’), issued by Transport 

Canada, which is the aviation authority 

for Canada. The MCAI applies to all 

Viking Air Limited (formerly de 

Havilland) Model DHC–6 series 1, DHC– 

6 series 100, DHC–6 series 110, DHC–6 

series 200, DHC–6 series 210, DHC–6 

series 300, DHC–6 series 310, DHC–6 

series 320, and DHC–6 series 400 

airplanes. The MCAI states: 

The airworthiness limitations for DHC–6 

aeroplanes are defined and published in the 

Viking Air Ltd. (Viking) Airframe 

Airworthiness Limitations Manual, Product 

Support Manual (PSM) 1–6–11, approved by 

Transport Canada. The instructions 

contained in PSM 1–6–11 have been 

identified as mandatory actions for continued 

airworthiness. Failure to comply with those 

instructions could result in an unsafe 

condition. 

Viking Air Ltd. published Revision 9 of 

PSM 1–6–11 earlier in 2018. Revision 9 of 

PSM 1–6–11, dated 30 April 2018, includes 

some new and/or more restrictive limitations 

than those contained in Revision 5. For the 

reason described above, this [Transport 

Canada] AD requires implementation of the 

actions specified in PSM 1–6–11 Revision 9. 

The compliance requirements for several of 

the tasks in PSM 1–6–11 were previously a 

range of flight hours and flight cycles. With 

Revision 9 of PSM 1–6–11, the range-based 

requirements have been changed to specific 

flight hours and flight cycle limits. This 

[Transport Canada] AD provides a phase-in 

allowance for those limitations so that 

operators will have the opportunity to 

schedule the modifications and inspections 

required by the limitations. The phase-in 

allowances are intended to mitigate the 

impact of changing from compliance ranges 

to compliance limits for aeroplanes that are 

approaching or have exceeded the limits on 

the effective date of the [Transport Canada] 

AD. 

Revision 9 of PSM 1–6–11 also includes 

some airworthiness limitations that were 

previously contained in service bulletins (SB) 

or other PSMs. Some of those limitations 

were mandated by [Transport Canada] ADs, 

specifically AD CF–80–06, CF–81–07R4 and 

CF–95–12. Because the affected limitations 

will now be controlled in PSM 1–6–11, the 

above mentioned [Transport Canada] ADs are 

superseded by this [Transport Canada] AD. 

The following are new tasks in PSM 1–6– 

11 Revision 9: 

1. Task 27–007 Replacement of flight 

control pulleys at Fuselage Station (FS) 270. 

2. Tasks 32–001 and 32–002 Overhaul of 

main landing gear leg. There is an associated 

requirement to ensure that each affected part 

has been assigned a unique serial number. 

3. Task 53–006 Inspection of the skin 

flange of machined frame at FS 239. 

4. Tasks 54–003 to 54–010 Inspection of 

nacelle longerons. 

5. Tasks 57–039 to 57–041 Inspection for 

wing upper skin disbond. 

Task 27–004 Replacement of flight control 

cables after spillage of corrosive materials in 

PSM 1–6–11 was limited to landplane 

configurations in previous revisions of PSM 

1–6–11 but is now applicable to all 

configurations. 

The intent of the word ‘‘airframe’’ in PSM 

1–6–11 Revision 9 is to include fuselage, 

nacelles, struts, interiors, cowlings, fairings, 

airfoils, landing gear and their controls. The 

airframe life limitation in PSM 1–6–11 

Revision 9 is not intended to apply to 

components such as those in the fuel, 

electrical and hydraulic systems that are 

occasionally transferred from one aeroplane 

to another and may be salvaged from an 

aeroplane that is retired from service for use 

on an in-service aeroplane. PSM 1–6–13 

defines current airworthiness limitations for 

DHC–6 avionics that are not addressed in this 

[Transport Canada] AD. 

Model DHC–6–400 airplanes were 

type certificated after Transport Canada 

AD CF–2000–14 was issued and are 

subject to the same unsafe condition. 

You may examine the MCAI in the AD 

docket at https://www.regulations.gov 

by searching for and locating Docket No. 

FAA–2021–0960. 

Discussion of Final Airworthiness 

Directive 

Comments 

The FAA received no comments on 

the NPRM or on the determination of 

the costs. 

Conclusion 

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 and service information 

referenced above. The FAA determined 

that air safety requires adopting this AD 

as proposed. Accordingly, the FAA is 

issuing this AD to address the unsafe 

condition on these products. This AD is 

adopted as proposed in the NPRM. 

Related Service Information Under 1 

CFR Part 51 

The FAA reviewed Viking Air 

Limited DHC–6 Twin Otter PSM 1–6– 

11, Airframe Airworthiness Limitations 

Manual, Revision 9, dated April 30, 

2018. The service information contains 

airworthiness limitations for certain 

structural components. 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 ADDRESSES. 

ADs Mandating Airworthiness 

Limitations 

The FAA has previously mandated 

airworthiness limitations by issuing 

ADs that require revising the 

airworthiness limitation section (ALS) 

of the existing maintenance manual or 

instructions for continued airworthiness 

to incorporate new or revised 

inspections and life limits. This AD, 

however, requires incorporating new or 

revised inspections and life limits into 

the maintenance records required by 14 

CFR 91.417(a)(2) or 135.439(a)(2) for 

your airplane. The FAA does not intend 

this as a substantive change. Requiring 

incorporation of the new ALS 

requirements into the maintenance 

records, rather than requiring individual 

repetitive inspections and replacements, 

allows operators to record AD 

compliance once after updating the 

maintenance records, rather than 

recording compliance after every 

inspection and part replacement. 

Differences Between This AD and the 

MCAI 

The MCAI applies to Viking Air 

Limited Model DHC–6 series 110, DHC– 

6 series 210, DHC–6 series 310, and 

DHC–6 series 320, and this AD does not 

because these models do not have an 

FAA type certificate. Transport Canada 

Models DHC–6 series 1, DHC–6 series 

100, DHC–6 series 200, DHC–6 series 

300, and DHC–6 series 400 airplanes 

correspond to FAA Model DHC–6–1, 

DHC–6–100, DHC–6–200, DHC–6–300, 

and DHC–6–400 airplanes, respectively. 

Costs of Compliance 

The FAA estimates that this AD 

affects 33 airplanes of U.S. registry. 


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7694 Federal Register / Vol. 87, No. 28 / Thursday, February 10, 2022 / Rules and Regulations 

The FAA also estimates that it would 

take about 1 work-hour per airplane to 

incorporate life limits, modification 

limits, and inspection or overhaul 

intervals into maintenance records. The 

average labor rate is $85 per work-hour. 

Based on these figures, the FAA 

estimates the cost of this AD on U.S. 

operators to be $2,805 or $85 per 

airplane. 

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. 

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 

■ a. Removing Airworthiness Directive 

80–13–10, Amendment 39–3812 (45 FR 

43155, June 26, 1980); Airworthiness 

Directive 80–13–12 R1, Amendment 39– 

4135 (46 FR 31251, June 15, 1981); and 

Airworthiness Directive 2008–03–01, 

Amendment 39–15350 (73 FR 5729, 

January 31, 2008); and 

■ b. Adding the following new 

airworthiness directive: 

2022–03–04 Viking Air Limited (Type 

Certificate Previously Held by 

Bombardier, Inc. and de Havilland, 

Inc.): Amendment 39–21921; Docket No. 

FAA–2021–0960; Project Identifier 

2019–CE–021–AD. 

(a) Effective Date 

This airworthiness directive (AD) is 

effective March 17, 2022. 

(b) Affected ADs 

This AD replaces the ADs specified in 

paragraphs (b)(1) through (3) of this AD. 

(1) AD 80–13–10, Amendment 39–3812 (45 

FR 43155, June 26, 1980). 

(2) AD 80–13–12 R1, Amendment 39–4135 

(46 FR 31251, June 15, 1981). 

(3) AD 2008–03–01 Amendment 39–15350 

(73 FR 5729, January 31, 2008). 

(c) Applicability 

This AD applies to Viking Air Limited 

(type certificate previously held by 

Bombardier, Inc. and de Havilland, Inc.) 

Model DHC–6–1, DHC–6–100, DHC–6–200, 

DHC–6–300, and DHC–6–400 airplanes, all 

serial numbers, certificated in any category. 

(d) Subject 

Joint Aircraft System Component (JASC) 

Code 0500, Time Limits. 

(e) Unsafe Condition 

This AD was prompted by mandatory 

continuing airworthiness information (MCAI) 

originated by an aviation authority of another 

country to identify and correct an unsafe 

condition on an aviation product. The MCAI 

identifies the unsafe condition as failure to 

comply with new and more restrictive 

airworthiness limitations, including tasks 

where range-based requirements have been 

changed to specific hours time-in-service 

(TIS) and flight cycle limits. The FAA is 

issuing this AD to prevent loss of structural 

integrity of certain parts. The unsafe 

condition, if not addressed, could result in 

loss of control of the airplane. 

(f) Compliance 

Comply with this AD within the 

compliance times specified, unless already 

done. 

(g) Maintenance and Life Limits 

(1) Within 30 days after the effective date 

of this AD, incorporate into the maintenance 

records required by 14 CFR 91.417(a)(2) or 

135.439(a)(2) for your airplane the life limits, 

modification limits, and inspection or 

overhaul intervals in Viking Air Limited 

DHC–6 Twin Otter PSM 1–6–11, Airframe 

Airworthiness Limitations Manual, Revision 

9, dated April 30, 2018 (Viking Air Limited 

PSM 1–6–11, Revision 9). 

(2) Before further flight after revising the 

maintenance records as required by 

paragraph (g)(1) of this AD, except as allowed 

under paragraph (h) of this AD, remove from 

service each part that has reached or 

exceeded its life limit and modify each part 

that has reached or exceeded its modification 

limit. 

(3) Before further flight after revising the 

maintenance records as required by 

paragraph (g)(1) of this AD, except as allowed 

under paragraph (h) of this AD, inspect or 

overhaul each part that has reached or 

exceeded its inspection or overhaul interval. 

(h) Phase-in Period 

The following phase-in periods are allowed 

to comply with the initial tasks in Viking Air 

Limited PSM 1–6–11, Revision 9. 

(1) Task 27–007: For any pulley that has 

been in service for 48 or more months on the 

effective date of this AD, replace the pulley 

within 12 months after the effective date of 

this AD. 

(2) Tasks 32–001 and 32–002: 

(i) For any main landing gear (MLG) leg 

that, on the effective date of this AD, has not 

been marked with a new serial number as 

specified in Viking DHC–6 Twin Otter 

Technical Bulletin V6/00063: Within 6 

months after the effective date of this AD, 

inspect and serialize the MLG leg. The 

absence of a serial number indicates that the 

initial inspection of the landing gear leg has 

not previously been accomplished. 

(ii) For all other MLG legs, overhaul the 

MLG leg within 60 months after the last 

overhaul. 

(3) Tasks 57–006, 57–007, 57–010, 57–011, 

57–013, and 57–014: 

(i) For any wing that on the effective date 

of this AD has accumulated more than 16,000 

hours total TIS or 32,000 total flight cycles 

but less than 17,000 hours total TIS or less 

than 34,000 total flight cycles, accomplish 

the task within 1,000 hours TIS or 2,000 

flight cycles, whichever occurs first after the 

effective date of this AD. 

(ii) For any wing that on the effective date 

of this AD has accumulated 17,000 or more 

hours total TIS or 34,000 or more total flight 

cycles, accomplish the task before 

accumulating 18,000 hours total TIS or 

36,000 total flight cycles, or within 60 

months after the effective date of this AD, 

whichever occurs first. 

(4) Tasks 57–018, 57–019, 57–022, 57–023, 

57–026, 57–027, 57–030, and 57–031: 

(i) For any wing that on the effective date 

of this AD has accumulated more than 11,000 

hours total TIS or 22,000 total flight cycles 

but less than 12,000 hours total TIS or less 

than 24,000 total flight cycles, accomplish 

the task within 1,000 hours TIS or 2,000 

flight cycles, whichever occurs first after the 

effective date of this AD. 


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Federal Register / Vol. 87, No. 28 / Thursday, February 10, 2022 / Rules and Regulations 7695 

(ii) For any wing that on the effective date 

of this AD has accumulated 12,000 or more 

hours total TIS or 24,000 or more total flight 

cycles, accomplish the task before 

accumulating 13,000 hours total TIS or 

26,000 total flight cycles or within 60 months 

after the effective date of this AD, whichever 

occurs first. 

(5) Tasks 57–039 to 57–041 inclusive: For 

any wing that on the effective date of this AD 

has more than 20 years since the date of 

manufacture and has not previously been 

inspected in accordance with Viking Service 

Bulletin V6/0018, inspect the wing upper 

surface within 120 days after the effective 

date of this AD. 

(i) No Alternative Actions or Intervals 

After the maintenance records have been 

revised as required by paragraph (g) of this 

AD, no alternative actions (e.g., inspections) 

or intervals may be used unless the actions 

or intervals are approved as an alternative 

method of compliance (AMOC) in 

accordance with the procedures specified in 

paragraph (j)(1) of this AD. 

(j) Alternative Methods of Compliance 

(AMOCs) 

(1) 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 local Flight Standards 

District Office, as appropriate. If sending 

information directly to the manager of the 

certification office, send it to the attention of 

the person identified in paragraph (k)(1) of 

this AD. 

(2) Before using any approved AMOC, 

notify your appropriate principal inspector, 

or lacking a principal inspector, the manager 

of the local flight standards district office/ 

certificate holding district office. 

(k) Related Information 

(1) For more information about this AD, 

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. 

(2) Refer to Transport Canada AD CF– 

2019–02, dated January 9, 2019, for more 

information. You may examine the Transport 

Canada AD in the AD docket at https://

www.regulations.gov by searching for and 

locating Docket No. FAA–2021–0960. 

(l) Material Incorporated by Reference 

(1) The Director of the Federal Register 

approved the incorporation by reference 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) Viking Air Limited DHC–6 Twin Otter 

PSM 1–6–11, Airframe Airworthiness 

Limitations Manual, Revision 9, dated April 

30, 2018. 

(ii) [Reserved] 

(3) For service information identified in 

this AD, 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. 

(4) 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. 

(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 January 20, 2022. 

Lance T. Gant, 

Director, Compliance & Airworthiness 

Division, Aircraft Certification Service. 

[FR Doc. 2022–02715 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–2021–1181; Project 

Identifier MCAI–2021–00562–R; Amendment 

39–21901; AD 2022–02–04] 

RIN 2120–AA64 

Airworthiness Directives; Airbus 

Helicopters 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Final rule; request for 

comments. 

SUMMARY: The FAA is adopting a new 

airworthiness directive (AD) for certain 

Airbus Helicopters Model AS350B, 

AS350B2, AS350B3, and AS350BA 

helicopters. This AD was prompted by 

a report that a modification of the 

electrical wiring of the hydraulic system 

was wrongly embodied on certain 

helicopters, and a wiring nonconformity caused the solenoid of the 

tail rotor (TR) load compensator to deenergize when the ‘‘HYD’’ cut-off switch 

was activated. This AD requires 

installing a placard in the cockpit, in 

full view of the pilots; a functional 

check of the main rotor (MR) and TR 

servo actuator solenoids, and corrective 

actions (modification) if necessary; a 

modification (unless already done); and, 

after corrective actions or modification, 

optional removal of the placard, as 

specified in a European Union Aviation 

Safety Agency (EASA) AD, which is 

incorporated by reference. The FAA is 

issuing this AD to address the unsafe 

condition on these products. 

DATES: This AD becomes effective 

February 25, 2022. 

The Director of the Federal Register 

approved the incorporation by reference 

of a certain publication listed in this AD 

as of February 25, 2022. 

The FAA must receive comments on 

this AD by March 28, 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 material incorporated by reference 

(IBR) in this AD, contact the EASA, 

Konrad-Adenauer-Ufer 3, 50668 

Cologne, Germany; phone: +49 221 8999 

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

internet: www.easa.europa.eu. You may 

find this material on the EASA website 

at https://ad.easa.europa.eu. You may 

view this material 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. 

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– 

1181. 

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– 

1181; 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 AD, any 

comments received, and other 

information. The street address for 

Docket Operations is listed above. 

Comments will be available in the AD 

docket shortly after receipt. 

FOR FURTHER INFORMATION CONTACT: 

Darren Gassetto, Aerospace Engineer, 

COS Program Management Section, 

Operational Safety Branch, Compliance 

& Airworthiness Division, FAA, 1600 

Stewart Ave., Suite 410, Westbury, NY 

11590; phone: (516) 228–7323; email: 

Darren.Gassetto@faa.gov. 


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