DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2018-1070; Product Identifier 2018-NM-154-AD; Amendment
39-19633; AD 2019-08-12]
Airworthiness Directives; Viking Air Limited (Type Certificate
Previously Held by Bombardier, Inc.; Canadair Limited) Airplanes
AGENCY: Federal Aviation Administration (FAA), Department of
ACTION: Final rule.
SUMMARY: We are adopting a new airworthiness directive (AD) for
Viking Air Limited Model CL-215-6B11 (CL-215T Variant) and CL-215-6B11
(CL-415 Variant) airplanes. This AD was prompted by a report that a
supplier fabricated Teflon parts with a charge of 15 percent fiberglass
content instead of the specified 5 percent fiberglass content. This AD
requires repetitive detailed visual inspections of the aileron control
system cables and flap interconnect system cables for damage or
disconnected cables, corrective actions if necessary, and replacement
of the Teflon parts in the aileron control systems, aileron/rudder
interconnect, and aileron power unit beam. The replacement of these
parts terminates the repetitive inspections. We are issuing this AD to
address the unsafe condition on these products.
DATES: This AD is effective June 13, 2019.
The Director of the Federal Register approved the incorporation by
reference of certain publications listed in this AD as of June 13,
ADDRESSES: For service information identified in this final rule,
contact Viking Air Limited, 1959 de Havilland Way, Sidney, British
Columbia V8L 5V5, Canada; telephone +1-250-656-7227; fax +1-250-656-
0673; email firstname.lastname@example.org; internet http://
www.vikingair.com. You may view this service information at the FAA,
Transport Standards 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 http://www.regulations.gov
by searching for and locating Docket No. FAA-2018-1070.
Examining the AD Docket
You may examine the AD docket on the internet at http://www.regulations.
gov by searching for and locating Docket No. FAA-2018-
1070; 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 regulatory evaluation, any comments received, and
other information. The address for Docket Operations (phone: 800-647-
5527) 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: Darren Gassetto, Aerospace Engineer,
Mechanical Systems and Admin Services Section, FAA, New York ACO
Branch, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590; telephone
516-228-7323; fax 516-794-5531; email email@example.com.
We issued a notice of proposed rulemaking (NPRM) to amend 14 CFR
part 39 by adding an AD that would apply to certain Viking Air Limited
Model CL-215-6B11 (CL-215T Variant) and CL-215-6B11 (CL-415 Variant)
airplanes. The NPRM published in the Federal Register on February 8,
2019 (84 FR 2791). The NPRM was prompted by a report that a supplier
fabricated Teflon parts with a charge of 15 percent fiberglass content
instead of the specified 5 percent fiberglass content. The NPRM
proposed to require repetitive detailed visual inspections of the
aileron control system cables and flap interconnect system cables for
damage or disconnected cables, corrective actions if necessary, and
replacement of the Teflon parts in the aileron control systems,
aileron/rudder interconnect, and aileron power unit beam. The NPRM
proposed that the replacement of these parts would terminate the
We are issuing this AD to address parts manufactured with this
higher percentage of fiberglass, which may cause deterioration of
control cables and adjacent parts due to greater friction should they
come into contact, which could lead to reduced controllability of the
Transport Canada Civil Aviation (TCCA), which is the aviation
authority for Canada, has issued Canadian AD CF-2018-27, dated October
12, 2018 (referred to after this as the Mandatory Continuing
Airworthiness Information, or ``the MCAI''), to correct an unsafe
condition for certain Viking Air Limited Model CL-215-6B11 (CL-215T
Variant) and CL-215-6B11 (CL-415 Variant) airplanes. The MCAI states:
It was found that a supplier fabricated TeflonTM
parts with a charge of 15% fiberglass content in lieu of the
required 5%. Parts manufactured with this higher percentage of
fiberglass may cause wear and rupture of control cables due to
greater friction if contacted [which could lead to reduced
controllability of the airplane].
This [Canadian] AD mandates a [detailed] visual inspection of
the aileron control system cables and flap interconnect system
cables in the area of the aileron power control unit. The inspection
is required to ensure that there is no cable damage or disconnect
until the replacement of the TeflonTM parts has been
completed in the aileron control system, the aileron/rudder
interconnect and the aileron power unit beam. This [Canadian] AD
also requires replacement of the TeflonTM parts.
Signs of damage include broken wires, unusual wear, or fraying
cables. You may examine the MCAI in the AD docket on the internet at
http://www.regulations.gov by searching for and locating Docket No.
We gave the public the opportunity to participate in developing
this final rule. We received no comments on the NPRM or on the
determination of the cost to the public.
We reviewed the relevant data and determined that air safety and
the public interest require adopting this final rule as proposed,
except for minor editorial changes. We have determined that these minor
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.
Related Service Information Under 1 CFR Part 51
Bombardier has issued Service Bulletin 215-3185, Revision 1, dated
January 28, 2014; and Service Bulletin 215-4476, Revision 1, dated
January 28, 2014. The service information describes procedures for a
detailed visual inspection in the area of the aileron power control
unit for damaged or disconnected aileron control system cables or flap
interconnect system cables, and corrective actions. These documents are
distinct since they apply to different airplane models in different
Bombardier has also issued Service Bulletin 215-3186, Revision 3,
dated September 29, 2015; and Service
Bulletin 215-4477, Revision 2, dated September 29, 2015. The service
information describes procedures for replacement of Teflon parts in the
aileron control system, the aileron/rudder interconnect, and the
aileron power unit beam. These documents are distinct since they apply
to different airplane models in different configurations.
This service information is reasonably available because the
interested parties have access to it through their normal course of
business or by the means identified in the ADDRESSES section.
Costs of Compliance
We estimate that this AD affects 1 airplane of U.S. registry. We
estimate the following costs to comply with this AD:
Estimated Costs for Required Actions
|66 work-hours x $85 per hour
We have received no definitive data
that would enable us to provide
cost estimates for the on-condition actions specified in this AD.
Authority for This Rulemaking
Title 49 of the United States Code specifies the FAA's authority to
issue rules on aviation safety. Subtitle I, section 106, describes the
authority of the FAA Administrator. Subtitle VII: Aviation Programs,
describes in more detail the scope of the Agency's authority.
We are 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
This AD is issued in accordance with authority delegated by the
Executive Director, Aircraft Certification Service, as authorized by
FAA Order 8000.51C. In accordance with that order, issuance of ADs is
normally a function of the Compliance and Airworthiness Division, but
during this transition period, the Executive Director has delegated the
authority to issue ADs applicable to transport category airplanes and
associated appliances to the Director of the System Oversight Division.
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
(2) Is not a ``significant rule'' under the DOT Regulatory Policies
and Procedures (44 FR 11034, February 26, 1979),
(3) Will not affect intrastate aviation in Alaska, and
(4) 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
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.
Sec. 39.13 [Amended]
2. The FAA amends Sec. 39.13 by adding the following new airworthiness