[Federal Register Volume 83, Number 57 (Friday, March 23, 2018)]
[Rules and Regulations]
[Pages 12659-12662]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2018-05014]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2017-0495; Product Identifier 2017-NM-017-AD; Amendment 
39-19222; AD 2018-06-02]
RIN 2120-AA64


Airworthiness Directives; Bombardier, Inc., Airplanes

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

ACTION: Final rule.

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SUMMARY: We are adopting a new airworthiness directive (AD) for all 
Bombardier, Inc., Model CL-600-2B19 (Regional Jet Series 100 & 440), 
Model CL-600-2C10 (Regional Jet Series 700, 701, & 702), Model CL-600-
2D15 (Regional Jet Series 705), and Model CL-600-2D24 (Regional Jet 
Series 900) airplanes. This AD was prompted by development of a 
modification to prevent uncommanded rudder movement during flight. This 
AD requires modifying the wiring harness of the yaw damper control 
system. We are issuing this AD to address the unsafe condition on these 
products.

DATES: This AD is effective April 27, 2018.
    The Director of the Federal Register approved the incorporation by 
reference of certain publications listed in this AD as of April 27, 
2018.

ADDRESSES: For service information identified in this final rule, 
contact Bombardier, Inc., 400 C[ocirc]te-Vertu Road West, Dorval, 
Qu[eacute]bec H4S 1Y9, Canada; Widebody Customer Response Center North 
America toll-free telephone 1-866-538-1247 or direct-dial telephone 1-
514-855-2999; fax 514-855-7401; email [email protected]; 
internet: http://www.bombardier.com.

[[Page 12660]]

You may view this referenced 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-2017-0495.

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-
0495; 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 Section, New York ACO Branch, FAA, 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 all Bombardier, Inc., Model 
CL-600-2B19 (Regional Jet Series 100 & 440), Model CL-600-2C10 
(Regional Jet Series 700, 701, & 702), Model CL-600-2D15 (Regional Jet 
Series 705), and Model CL-600-2D24 (Regional Jet Series 900) airplanes. 
The NPRM published in the Federal Register on May 31, 2017 (82 FR 
24897) (``the NPRM''). The NPRM was prompted by development of a 
modification to prevent uncommanded rudder movement during flight. The 
NPRM proposed to require modifying the wiring harness of the yaw damper 
control system. We are issuing this AD to prevent uncommanded rudder 
movement and consequent loss of the ability to control the airplane.
    Transport Canada Civil Aviation (TCCA), which is the aviation 
authority for Canada, has issued Canadian Airworthiness Directive CF-
2017-06, effective February 14, 2017 (referred to after this as the 
Mandatory Continuing Airworthiness Information, or ``the MCAI''), to 
correct an unsafe condition for all Bombardier, Inc., Model CL-600-2B19 
(Regional Jet Series 100 & 440), Model CL-600-2C10 (Regional Jet Series 
700, 701, & 702), Model CL-600-2D15 (Regional Jet Series 705), and 
Model CL-600-2D24 (Regional Jet Series 900) airplanes. The MCAI states:

    [Canadian] AD CF-2013-13 was issued on 28 May 2013 [related to 
FAA AD 2013-14-11, Amendment 39-17516 (78 FR 44871, July 25, 2013) 
(``AD 2013-14-11'')] to mandate the introduction of an emergency 
procedure to the Aeroplane Flight Manual to address the uncommanded 
rudder movement.
    Since the original issue of [Canadian] AD CF-2013-13, Bombardier 
Aerospace has developed a wiring modification for the yaw damper 
control system to prevent uncommanded movement of the rudder [and 
consequent loss of the ability to control the airplane].
    This [Canadian] AD mandates the wiring modification for the yaw 
damper control system * * *.

    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-20**-
****.

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 (ALPA), agreed with 
the intent of the NPRM.

Request To Clarify Credit for Certain Service Information

    SkyWest Airlines and Ahmad Lababidi asked that we revise paragraph 
(h) of the proposed AD to clarify the credit language for accomplishing 
the engineering orders in conjunction with the referenced service 
information. Ahmad Lababidi stated that Service Non-Incorporated 
Engineering Order (SNIEO) K601R50211 S02, dated October 31, 2014, was 
issued for certain airplane configurations where the wire connector was 
changed from pin type to socket type. The commenters added that SNIEOs 
K601R50211 S03, dated April 21, 2015, and S04, dated April 24, 2015, 
were issued to clarify certain splicing, capping, and stowing 
locations, and to reduce the work hours for accomplishing the actions 
specified in the service bulletin. The commenters added that it is not 
necessary to do the engineering orders in conjunction with the 
referenced service information. SkyWest reported accomplishing the 
modification on some airplanes using only the applicable service 
bulletin without any reference to the SNIEOs specified in paragraph (h) 
of the proposed AD.
    We agree with the commenters' requests for the reasons provided. We 
have revised paragraphs (h)(1)(i) and (h)(1)(ii) of this AD to remove 
reference to the SNIEOs, which are not required to be used in 
conjunction with the referenced service information.

Request To Revise Parts Installation Limitations Paragraph

    Air Wisconsin asked that we revise paragraph (i) of the proposed AD 
(Parts Installation Limitations) to exclude parts on which the actions 
in the referenced service information have been done.
    We acknowledge the commenter's request. However, paragraph (i) of 
this AD already prohibits installation of a yaw damper actuator . . . 
``unless it has been modified in accordance with the applicable service 
information specified in table 1 to paragraph (g) of this AD.'' Since 
existing language meets the intent of the commenter's request, we have 
not changed this AD in this regard.

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

    Bombardier has issued Service Bulletin 601R-22-017, Revision C, 
dated May 11, 2016; and Service Bulletin 670BA-22-007, Revision A, 
dated February 16, 2016. This service information describes procedures 
for modifying the wiring harness of the yaw damper control system. 
These documents are distinct since they apply to different airplane 
models. 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.

[[Page 12661]]

Costs of Compliance

    We estimate that this AD affects 1,006 airplanes of U.S. registry.
    We estimate the following costs to comply with this AD:

                                                 Estimated Costs
----------------------------------------------------------------------------------------------------------------
                                                                                                  Cost on U.S.
             Action                    Labor cost            Parts cost      Cost per product      operators
----------------------------------------------------------------------------------------------------------------
Wiring modification............  5 work-hours x $85 per  Up to $39........  Up to $464.......  Up to $466,784.
                                  hour = $425.
----------------------------------------------------------------------------------------------------------------

    According to the manufacturer, some of the costs of this AD may be 
covered under warranty, thereby reducing the cost impact on affected 
individuals. We do not control warranty coverage for affected 
individuals. As a result, we have included all costs in our cost 
estimate.

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 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 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

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 adding the following new airworthiness 
directive (AD):

2018-06-02 Bombardier, Inc.: Amendment 39-19222; Docket No. FAA-
2017-0495; Product Identifier 2017-NM-017-AD.

(a) Effective Date

    This AD is effective April 27, 2018.

(b) Affected ADs

    None.

(c) Applicability

    This AD applies to all Bombardier, Inc., Model CL-600-2B19 
(Regional Jet Series 100 & 440), Model CL-600-2C10 (Regional Jet 
Series 700, 701, & 702), Model CL-600-2D15 (Regional Jet Series 
705), and Model CL-600-2D24 (Regional Jet Series 900) airplanes, 
certificated in any category.

(d) Subject

    Air Transport Association (ATA) of America Code 22, Auto Flight.

(e) Reason

    This AD was prompted by development of a modification to prevent 
uncommanded rudder movement during flight. We are issuing this AD to 
prevent uncommanded rudder movement and consequent loss of the 
ability to control the airplane.

(f) Compliance

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

(g) Modification

    Within 6,600 flight hours or 36 months after the effective date 
of this AD, whichever occurs first: Modify the wiring harness of the 
yaw damper control system, in accordance with the applicable service 
information specified in table 1 to paragraph (g) of this AD.

[[Page 12662]]

[GRAPHIC] [TIFF OMITTED] TR23MR18.021

(h) Credit for Previous Actions

    (1) This paragraph provides credit for actions required by 
paragraph (g) of this AD for Model CL-600-2B19 (Regional Jet Series 
100 & 440) airplanes, if those actions were performed before the 
effective date of this AD using the service information specified in 
paragraph (h)(1)(i), (h)(1)(ii), or (h)(1)(iii) of this AD.
    (i) Bombardier Service Bulletin 601R-22-017, dated September 24, 
2014.
    (ii) Bombardier Service Bulletin 601R-22-017, Revision A, dated 
February 26, 2015.
    (iii) Bombardier Service Bulletin 601R-22-017, Revision B, dated 
July 16, 2015.
    (2) This paragraph provides credit for actions required by 
paragraph (g) of this AD for Model CL-600-2C10 (Regional Jet Series 
700, 701, & 702), Model CL-600-2D15 (Regional Jet Series 705), and 
Model CL-600-2D24 (Regional Jet Series 900) airplanes, if those 
actions were performed before the effective date of this AD using 
Bombardier Service Bulletin 670BA-22-007, dated October 15, 2014.

(i) Parts Installation Limitations

    As of 24 months after the effective date of this AD, no person 
may install, on any airplane, a yaw damper actuator having part 
number 622-9968-001, unless it has been modified in accordance with 
the applicable service information specified in table 1 to paragraph 
(g) of this AD.

(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 local Flight Standards District Office, as appropriate. 
If sending information directly to the manager of the New York ACO, 
send it to ATTN: Program Manager, Continuing Operational Safety, New 
York ACO Branch, FAA, 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 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.

(k) Related Information

    (1) Refer to Mandatory Continuing Airworthiness Information 
(MCAI) Canadian Airworthiness Directive CF-2017-06, effective 
February 14, 2017, for related information. 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-2017-0495.
    (2) For more information about this AD, contact Cesar Gomez, 
Aerospace Engineer, Airframe and Mechanical Systems Section, New 
York ACO Branch, FAA, 1600 Stewart Avenue, Suite 410, Westbury, NY 
11590; telephone 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 (l)(3) and (l)(4) 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) Bombardier Service Bulletin 601R-22-017, Revision C, dated 
May 11, 2016.
    (ii) Bombardier Service Bulletin 670BA-22-007, Revision A, dated 
February 16, 2016.
    (3) For service information identified in this AD, contact 
Bombardier, Inc., 400 C[ocirc]te-Vertu Road West, Dorval, 
Qu[eacute]bec H4S 1Y9, Canada; Widebody Customer Response Center 
North America toll-free telephone 1-866-538-1247 or direct-dial 
telephone 1-514-855-2999; fax 514-855-7401; email 
[email protected]; internet: http://www.bombardier.com.
    (4) 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.
    (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 March 2, 2018.
Michael Kaszycki,
Acting Director, System Oversight Division, Aircraft Certification 
Service.
[FR Doc. 2018-05014 Filed 3-22-18; 8:45 am]
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