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PROPOSED AD VIKING AIR LIMITED (TYPE CERTIFICATE PREVIOUSLY HELD BY BOMBARDIER, INC.; CANADAIR LIMITED): Docket No. FAA-2018-1070; Product Identifier 2018-NM-154-AD.
(a) COMMENTS DUE DATE

    We must receive comments by March 25, 2019.

(b) AFFECTED ADS

    None.

(c) APPLICABILITY

    This AD  applies to  Viking Air  Limited (Type  Certificate previously
    held by Bombardier, Inc.; Canadair Limited) airplanes, certificated in
    any category, as  identified in paragraphs  (c)(1) and (c)(2)  of this
    AD.

(1) Model CL-215-6B11  (CL-215T Variant)  airplanes,  serial numbers 1085,
    1086, 1093, 1094, and 1098 through 1101 inclusive.

(2) Model CL-215-6B11  (CL-415 Variant)  airplanes,  serial  numbers  2076
    through 2090 inclusive.

(d) SUBJECT

    Air Transport Association (ATA) of America Code 27, Flight controls.

(e) REASON

    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. 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 airplane.

(f) COMPLIANCE

    Comply  with this  AD within  the compliance  times specified,  unless
    already done.

(g) INSPECTION

    Within 50 flight hours after the effective date of this AD: Accomplish
    a detailed visual inspection of the aileron control systems cables and
    flap interconnect system cables for disconnected or damaged cables  in
    accordance with paragraph 2.A.  of the Accomplishment Instructions  of
    Bombardier Service  Bulletin 215-3185,  Revision 1,  dated January 28,
    2014;  or  Bombardier  Service Bulletin  215-4476,  Revision  1, dated
    January 28, 2014; as  applicable. Repeat the inspection  thereafter at
    intervals not to exceed 50 flight hours.

(h) CORRECTIVE ACTION

    If any disconnected or damaged (including broken wires, unusual  wear,
    or  fraying)  cables  are  found  during  any  inspection  required by
    paragraph (g)  of this  AD: Before  further flight,  obtain corrective
    actions  approved  by  the  Manager,  New  York  ACO  Branch,  FAA; or
    Transport Canada Civil Aviation  (TCCA); or Viking Air  Limited's TCCA
    Design  Approval  Organization  (DAO). If  approved  by  the DAO,  the
    approval  must include  the DAO-authorized  signature. Accomplish  the
    corrective actions within the compliance time specified therein. If no
    compliance time is specified  in the corrective actions  instructions,
    accomplish the corrective action before further flight.

(i) REPLACEMENT

    Within 29  months after  the effective  date of  this AD:  Replace the
    Teflon  parts  in  the  aileron  control  system,  the  aileron/rudder
    interconnect, and the aileron power unit beam in accordance with Parts
    A, B, and C of  the Accomplishment Instructions of Bombardier  Service
    Bulletin 215-3186, Revision 3, dated September 29, 2015; or Bombardier
    Service Bulletin 215-4477, Revision 2, dated September 29, 2015.

(j) TERMINATING ACTION FOR INSPECTIONS

    Accomplishing the replacement required by paragraph (i) of this AD  on
    an  airplane  constitutes  terminating  action  for  the   inspections
    required by paragraph (g) of this AD for that airplane.

(k) CREDIT FOR PREVIOUS ACTIONS

    This paragraph provides credit  for actions required by  paragraph (i)
    of this AD, if those actions were performed before the effective  date
    of  this  AD using  the  service information  specified  in paragraphs
    (k)(1) through (k)(5) of this AD.

(1) Bombardier Service Bulletin 215-3186, dated September 30, 2013.

(2) Bombardier Service Bulletin 215-3186, Revision 1,  dated  November 26,
    2014.

(3) Bombardier Service Bulletin 215-3186,  Revision 2,  dated  December 5,
    2014.

(4) Bombardier Service Bulletin 215-4477, dated September 30, 2013.

(5) Bombardier Service Bulletin 215-4477, Revision 1,  dated  November 26,
    2014.

(l) NO REPORTING REQUIREMENT

    Although  Bombardier  Service  Bulletin  215-3185,  Revision  1, dated
    January 28,  2014; Bombardier  Service Bulletin  215-3186, Revision 3,
    dated  September  29,  2015;  Bombardier  Service  Bulletin  215-4476,
    Revision 1, dated  January 28, 2014;  and Bombardier Service  Bulletin
    215-4477,  Revision 2,  dated September  29, 2015;  specify to  submit
    certain information to the manufacturer, this AD does not include that
    requirement.

(m) 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
    local Flight  Standards District  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  local  flight  standards
    district office/certificate holding district office.

(2) Contacting the Manufacturer:  For any requirement in this AD to obtain
    corrective  actions   from  a   manufacturer,  the   action  must   be
    accomplished using  a method  approved by  the Manager,  New York  ACO
    Branch, FAA; or TCCA; or Viking Air Limited's TCCA DAO. If approved by
    the DAO, the approval must include the DAO-authorized signature.

(n) RELATED INFORMATION

(1) Refer   to   Mandatory  Continuing  Airworthiness  Information  (MCAI)
    Canadian AD CF-2018-27, dated October 12, 2018,  for  related informa-
    tion. This  MCAI may  be found  in the  AD docket  on the  internet at
    http://www.regulations.gov by  searching for  and locating  Docket No.
    FAA-2018-1070.

(2) For more information about this AD, contact Darren Gassetto, Aerospace
    Engineer, Mechanical Systems and Admin Services Section, FAA, New York
    ACO Branch, 1600 Stewart Avenue,  Suite 410, Westbury, NY 11590; tele-
    phone 516-228-7323; fax 516-794-5531; email 9-avs-nyaco-cos@faa.gov.

(3) For  service information identified  in  this  AD,  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  acs-
    technical.publications@vikingair.com;  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.

Issued in Des Moines, Washington,  on January 10, 2019.  Jeffrey E. Duven,
Director, System Oversight Division, Aircraft Certification Service.

DATES: We must receive comments on this proposed AD by March 25, 2019.
PREAMBLE 

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2018-1070; Product Identifier 2018-NM-154-AD]
RIN 2120-AA64

Airworthiness Directives; Viking Air Limited (Type Certificate
Previously Held by Bombardier, Inc.; Canadair Limited) Airplanes

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Notice of proposed rulemaking (NPRM).

-----------------------------------------------------------------------

SUMMARY: We propose to adopt a new airworthiness directive (AD) for
certain Viking Air Limited Model CL-215-6B11 (CL-215T Variant) and CL-
215-6B11 (CL-415 Variant) airplanes. This proposed 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 proposed AD would 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 replacement of these parts would terminate the
repetitive inspections. We are proposing this AD to address the unsafe
condition on these products.

DATES: We must receive comments on this proposed AD by March 25, 2019.

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 http://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 service information identified in this NPRM, 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 acs-
technical.publications@vikingair.com; 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.

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 NPRM, the regulatory evaluation, any comments received, and other
information. The street address for Docket Operations (phone: 800-647-
5527) is in the ADDRESSES section. Comments will be available in the AD
docket shortly after receipt.

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

SUPPLEMENTARY INFORMATION:

Comments Invited

We invite you to send any written relevant data, views, or
arguments about this proposal. Send your comments to an address listed
under the ADDRESSES section. Include "Docket No. FAA-2018-1070;
Product Identifier 2018-NM-154-AD" at the beginning of your comments.
We specifically invite comments on the overall regulatory, economic,
environmental, and energy aspects of this NPRM. We will consider all
comments received by the closing date and may amend this NPRM because
of those comments.

We will post all comments we receive, without change, to http://www.
regulations.gov, including any personal information you provide. We
will also post a report summarizing each substantive verbal contact we
receive about this NPRM.

Discussion

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.
FAA-2018-1070.

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
configurations.

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.

FAA's Determination

This product has been approved by the aviation authority of another
country, and is approved for operation in the United States. Pursuant
to our bilateral agreement with the State of Design Authority, we have
been notified of the unsafe condition described in the MCAI and service
information referenced above. We are proposing this AD because we
evaluated all the relevant information and determined the unsafe
condition described previously is likely to exist or develop on other
products of the same type design.

Proposed Requirements of This NPRM

This proposed AD would require accomplishing the actions specified
in the service information described previously.

Costs of Compliance

We estimate that this proposed AD affects 1 airplane of U.S.
registry. We estimate the following costs to comply with this proposed
AD:

Estimated Costs for Required Actions

Labor cost
Parts cost
Cost per product
Cost on U.S. operators
66 work-hours x $85 per hour = $5,610
$16,456
$22,066
$22,066

We have received no definitive data that would enable us to provide
cost estimates for the on-condition actions specified in this proposed
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
rulemaking action.

This proposed 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 to the Director of the System Oversight
Division.

Regulatory Findings

We determined that this proposed AD would not have federalism
implications under Executive Order 13132. This proposed AD would 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 this proposed
regulation:

1. Is not a "significant regulatory action" under Executive Order
12866;

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
reference, Safety.

The Proposed Amendment

Accordingly, under the authority delegated to me by the
Administrator, the FAA proposes to amend 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
directive (AD):