Airworthiness Directives; Viking Air Limited (Type Certificate Previously Held by Bombardier, Inc. and de Havilland, Inc.) Airplanes, 7692-7695 [2022-02715]
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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.
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(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.
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(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: https://
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
Federal Aviation
Administration (FAA), DOT.
ACTION: Final rule.
AGENCY:
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
SUMMARY:
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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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(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
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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
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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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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.
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.
The Amendment
(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.
Accordingly, under the authority
delegated to me by the Administrator,
the FAA amends 14 CFR part 39 as
follows:
(f) Compliance
Comply with this AD within the
compliance times specified, unless already
done.
List of Subjects in 14 CFR Part 39
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PART 39—AIRWORTHINESS
DIRECTIVES
Air transportation, Aircraft, Aviation
safety, Incorporation by reference,
Safety.
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(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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(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.
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
(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.
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(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,
VerDate Sep<11>2014
16:22 Feb 09, 2022
Jkt 256001
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
Federal Aviation
Administration (FAA), DOT.
ACTION: Final rule; request for
comments.
AGENCY:
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
SUMMARY:
PO 00000
Frm 00017
Fmt 4700
Sfmt 4700
7695
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.
E:\FR\FM\10FER1.SGM
10FER1
Agencies
[Federal Register Volume 87, Number 28 (Thursday, February 10, 2022)]
[Rules and Regulations]
[Pages 7692-7695]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2022-02715]
-----------------------------------------------------------------------
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: [email protected];
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:
[email protected].
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)
[[Page 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 Y-joint 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.
[[Page 7694]]
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
0
1. The authority citation for part 39 continues to read as follows:
Authority: 49 U.S.C. 106(g), 40113, 44701.
Sec. 39.13 [Amended]
0
2. The FAA amends Sec. 39.13 by
0
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
0
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.
[[Page 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: [email protected].
(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: [email protected];
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: [email protected], 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