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2017-14-02 BOMBARDIER, INC.: Amendment 39-18946; Docket No. FAA-2017-0125; Directorate Identifier 2016-NM-193-AD.
(a) EFFECTIVE DATE

    This AD is effective August 10, 2017.

(b) AFFECTED ADS

    None.

(c) APPLICABILITY

    This  AD  applies  to Bombardier, Inc.,  Model DHC-8-401 and DHC-8-402
    airplanes,  certificated in any category,  as identified in Bombardier
    Service Bulletin 84-25-169, Revision B, dated February 17, 2017.

(d) SUBJECT

    Air Transport Association (ATA) of America Code 25, Equipment/furnish-
    ings.

(e) REASON

    This AD was prompted by a report  that a pilot was unable to move  the
    rudder pedal due  to an obstruction  caused by the  non-flying pilot's
    foot. We  are issuing  this AD  to prevent  an obstruction  that could
    prevent  rudder pedal  movement during  critical phases  of flight  or
    ground operations,  potentially resulting  in loss  of control  of the
    airplane.

(f) COMPLIANCE

    Comply with this AD within the compliance times specified,  unless al-
    ready done.

(g) INSPECTION AND MODIFICATION OF WIRING SHROUDS

    Within 6 months after the effective date of this AD, do a one-time in-
    spection to determine if wiring shrouds are installed,  in  accordance
    with paragraph 3.B.,  "Procedure,"  of the Accomplishment Instructions
    of Bombardier Service Bulletin 84-25-169,  Revision B,  dated February
    17, 2017.

(1) If the airplane  does not have  wiring shrouds installed,  no  further
    action is required by this AD.

(2) If the airplane has wiring shrouds installed,  before  further flight,
    modify  the  wiring  shrouds   in  accordance  with  paragraph   3.B.,
    "Procedure," of the Accomplishment Instructions of Bombardier  Service
    Bulletin 84-25-169, Revision B, dated February 17, 2017.

Note 1 to paragraph (g) of this AD:  Installation  of  wiring shrouds  was
provided in Bombardier Modification Summary Package (ModSum) IS4Q2500035-1
Revision A,  dated  July 26, 2011;   Revision B,  dated  October 10, 2013;
Revision C, dated March 26, 2014;  or Revision D, dated February 26, 2016;
or  ModSum IS4Q2500035-2,  Revision A,  dated  July 26, 2011;  Revision B,
dated October 10, 2013;  Revision C, dated March 26, 2014;  or Revision D,
dated February 26, 2016.

(h) 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  Bombardier Service Bulletin 84-25-169,  Revision A,
    dated April 25, 2016.

(i) OTHER FAA AD PROVISIONS

    The following provisions also apply to this AD:

(1) Alternative Methods of Compliance (AMOCs):  The Manager, New York Air-
    craft Certification Office (ACO),  ANE-170, 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
    ACO, send it to ATTN: Program Manager, Continuing Operational  Safety,
    FAA, New York ACO, 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,
    ANE-170,  FAA;   or  Transport   Canada  Civil   Aviation  (TCCA);  or
    Bombardier,  Inc.'s  TCCA  Design  Approval  Organization  (DAO).   If
    approved  by the  DAO, the  approval must  include the  DAO-authorized
    signature.

(j) RELATED INFORMATION

(1) Refer   to   Mandatory  Continuing  Airworthiness  Information  (MCAI)
    Canadian AD CF-2016-27, dated September 14, 2016, 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-
    2017-0125.

(2) For more information  about this AD,  contact  Cesar Gomez,  Aerospace
    Engineer,  Airframe and Mechanical Systems Branch,  ANE-171,  FAA, New
    York ACO,  1600 Stewart Avenue,  Suite 410, Westbury, NY 11590;  tele-
    phone: 516-228-7318; fax: 516-794-5531.

(3) Service information identified  in this AD that is not incorporated by
    reference is available at the addresses specified in paragraphs (k)(3)
    and (k)(4) of this AD.

(k) 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) Bombardier Service Bulletin 84-25-169, Revision B,  dated February 17,
    2017.

(ii) Reserved.

(3) For  service information identified  in this AD,  contact  Bombardier,
    Inc.,  Q-Series Technical Help Desk,  123 Garratt Boulevard,  Toronto,
    Ontario M3K 1Y5, Canada;  telephone 416-375-4000; fax 416-375-4539; e-
    mail thd.qseries@aero.bombardier.com;  Internet http://www.bombardier.
    com.

(4) You may view this service information at the FAA,  Transport  Airplane
    Directorate, 1601 Lind Avenue SW., Renton, WA.  For information on the
    availability of this material at the FAA, call 425-227-1221.

(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, call 202
    -741-6030, or go to: http://www.archives.gov/federal-register/cfr/ibr-
    locations.html.

Issued in Renton, Washington, on June 23, 2017.  Chris Spangenberg, Acting
Manager, Transport Airplane Directorate, Aircraft Certification Service.

FOR FURTHER INFORMATION CONTACT: Cesar Gomez, Aerospace Engineer, Airframe
and Mechanical Systems Branch ANE-171, FAA New York Aircraft Certification
Office (ACO), 1600 Stewart Avenue, Ste 410, Westbury, NY 11590; telephone:
516-228-7318; fax: 516-794-5531.
PREAMBLE 

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2017-0125; Directorate Identifier 2016-NM-193-AD;
Amendment 39-18946; AD 2017-14-02]
RIN 2120-AA64

Airworthiness Directives; Bombardier, Inc., Airplanes

AGENCY: Federal Aviation Administration (FAA), Department of
Transportation (DOT).

ACTION: Final rule.

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

SUMMARY: We are adopting a new airworthiness directive (AD) for certain
Bombardier, Inc., Model DHC-8-401 and DHC-8-402 airplanes. This AD was
prompted by a report that a pilot was unable to move the rudder pedal
due to an obstruction. This AD requires an inspection to determine if
wiring shrouds are present, and modifying the wiring shrouds if
necessary. We are issuing this AD to address the unsafe condition on
these products.

DATES: This AD is effective August 10, 2017.
The Director of the Federal Register approved the incorporation by
reference of a certain publication listed in this AD as of August 10,
2017.

ADDRESSES: For service information identified in this final rule,
contact Bombardier, Inc., Q-Series Technical Help Desk, 123 Garratt
Boulevard, Toronto, Ontario M3K 1Y5, Canada; telephone 416-375-4000;
fax 416-375-4539; email thd.qseries@aero.bombardier.com; Internet
http://www.bombardier.com. You may view this referenced service
information at the FAA, Transport Airplane Directorate, 1601 Lind
Avenue SW., Renton, WA. For information on the availability of this
material at the FAA, call 425-227-1221. It is also available on the
Internet at http://www.regulations.gov by searching for and locating
Docket No. FAA-2017-0125.

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-2017-
0125; or in person at the Docket Management Facility between 9 a.m. and
5 p.m., Monday through Friday, except Federal holidays. The AD docket
contains this AD, the regulatory evaluation, any comments received, and
other information. The street address for the Docket Office (telephone
800-647-5527) is Docket Management Facility, 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: Cesar Gomez, Aerospace Engineer,
Airframe and Mechanical Systems Branch, ANE-171, FAA, New York Aircraft
Certification Office (ACO), 1600 Stewart Avenue, Suite 410, Westbury,
NY 11590; telephone: 516-228-7318; fax: 516-794-5531.

SUPPLEMENTARY INFORMATION:

Discussion

We issued a notice of proposed rulemaking (NPRM) to amend 14 CFR
part 39 by adding an AD that would apply to certain Bombardier, Inc.,
Model DHC-8-401 and DHC-8-402 airplanes. The NPRM published in the
Federal Register on March 2, 2017 (82 FR 12301). The NPRM was prompted
by a report that a pilot was unable to move the rudder pedal due to an
obstruction. The NPRM proposed to require an inspection to determine if
wiring shrouds are present, and modifying the wiring shrouds if
necessary. We are issuing this AD to prevent an obstruction that could
prevent rudder pedal movement during critical phases of flight or
ground operations, potentially resulting in loss of control of the
airplane.
Transport Canada Civil Aviation (TCCA), which is the aviation
authority for Canada, has issued Canadian AD CF-2016-27, dated
September 14, 2016 (referred to after this as the Mandatory Continuing
Airworthiness Information, or ``the MCAI''), to correct an unsafe
condition for certain Bombardier, Inc., Model DHC-8-401 and DHC-8-402
airplanes. The MCAI states:

An operator reported that the flying pilot was unable to move
the rudder pedal due to an obstruction caused by the non-flying
pilot's foot. The shoe belonging to the non-flying pilot was placed
between the rudder pedal and the newly installed wiring shroud and
prevented rudder pedal movement. The wiring shroud was installed to
support the wire harnesses installed below the cockpit instrument
panel.
If not corrected, this condition could prevent rudder movement
during critical phases of flight or ground operation, and result in
loss of control of the aeroplane.
This [Canadian] AD was issued to re-work the wiring shrouds to
eliminate potential for obstruction.

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-2017-
0125.

Comments

We gave the public the opportunity to participate in developing
this AD. The following presents the comments received on the NPRM and
the FAA's response to each comment.

Support for the NPRM

The Air Line Pilots Association, International, stated that it
supports the NPRM.

Request To Refer to Updated Service Information and Provide Credit

Horizon Air requested that we revise the proposed AD to refer to
the newest version of the service information, Bombardier Service
Bulletin 84-25-169, Revision B, dated February 17, 2017. Horizon Air
also asked that we provide credit for previous actions done using
Bombardier Service Bulletin 84-25-169, Revision A, dated April 25,
2016.
We agree with the commenter's requests. We have determined that the
new service information does not require any additional actions for
airplanes modified using Revision A. We have revised this AD to refer
to Bombardier Service Bulletin 84-25-169, Revision B, dated February
17, 2017. We have also added paragraph (h) to this AD to provide credit
for previous actions and redesignated subsequent paragraphs
accordingly.

Request To Reference Only the Actions Required for Compliance

Horizon Air requested that we revise the requirements of the
proposed AD to mandate only the actions in paragraph 3.B.,
``Procedure'' of the Accomplishment Instructions of Bombardier Service
Bulletin 84-25-169, Revision B, dated February 17, 2017, rather than
the entire Accomplishment Instructions. Horizon Air explained that
requiring the job set-up and close-out sections of the service
information restricts an operator's ability to perform other
maintenance at the same time as incorporating the service information.
We agree with the commenter's request because it provides operators
additional flexibility, while still ensuring the unsafe condition is
corrected. We have revised paragraph (g) of this AD accordingly.

Conclusion

We reviewed the relevant data, considered the comments received,
and determined that air safety and the public interest require adopting
this AD with the changes described previously and minor editorial
changes. We have determined that these minor changes:
Are consistent with the intent that was proposed in the
NPRM for correcting the unsafe condition; and
Do not add any additional burden upon the public than was
already proposed in the NPRM.
We also determined that these changes will not increase the
economic burden on any operator or increase the scope of this AD.

Related Service Information Under 1 CFR Part 51

We reviewed Bombardier Service Bulletin 84-25-169, Revision B,
dated February 17, 2017. This service information describes procedures
for an inspection to verify if wiring shrouds are installed, and
modification of any existing wiring shrouds. 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 82 airplanes of U.S. registry.
We estimate the following costs to comply with this AD:

Estimated Costs

Action
Labor cost
Parts cost
Cost per product
Cost on U.S.
operators
Inspection 1 work-hour x $85 per hour = $85
$0
$85
$6,970

We estimate the following costs to do any necessary modifications
that would be required based on the results of the inspection. We have
no way of determining the number of aircraft that might need these
modifications:

On-Condition Costs

Action
Labor cost
Parts cost
Cost per product
Modification of wiring shrouds 7 work-hours x $85 per hour = $595
$71
$666

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.

Regulatory Findings

We determined that 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. 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.

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
directive (AD):