
[Federal Register Volume 82, Number 103 (Wednesday, May 31, 2017)]
[Proposed Rules]
[Pages 24897-24900]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2017-10544]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2017-0495; Directorate Identifier 2017-NM-017-AD]
RIN 2120-AA64


Airworthiness Directives; Bombardier, Inc., Airplanes

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Notice of proposed rulemaking (NPRM).

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SUMMARY: We propose to adopt a new airworthiness directive (AD) for all 
Bombardier, Inc., Model CL-600-2B19 (Regional Jet Series 100 & 440), 
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 proposed AD was prompted by development of a 
modification to prevent uncommanded rudder movement during flight. This 
proposed AD would require modifying the wiring harness of the yaw 
damper control system. We are proposing this AD to address the unsafe 
condition on these products.

[[Page 24898]]


DATES: We must receive comments on this proposed AD by July 17, 2017.

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 
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 ac.yul@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.

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

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: 

Comments Invited

    We invite you to send any written relevant data, views, or 
arguments about this proposed AD. Send your comments to an address 
listed under the ADDRESSES section. Include ``Docket No. FAA-2017-0495; 
Directorate Identifier 2017-NM-017-AD'' at the beginning of your 
comments. We specifically invite comments on the overall regulatory, 
economic, environmental, and energy aspects of this proposed AD. We 
will consider all comments received by the closing date and may amend 
this proposed AD based on 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 proposed AD.

Discussion

    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 44781, 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-2017-
0495.

Related Rulemaking

    On July 11, 2013, we issued AD 2013-14-11, applicable 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. That AD requires revising the airplane flight 
manual by incorporating an emergency procedure for uncommanded yaw 
motion. That AD was prompted by reports of airplanes experiencing 
uncommanded rudder movements while in flight. That AD was issued to 
advise the flightcrew of procedures to address a possible failure of 
the voltage regulator inside the yaw damper actuator that could lead to 
uncommanded rudder movement and consequent loss of the ability to 
control the airplane.
    Since issuance of AD 2013-14-11, a wiring modification for the yaw 
damper control system has been developed to prevent uncommanded rudder 
movement.

Related Service Information Under 1 CFR Part 51

    We reviewed Bombardier Service Bulletin 601R-22-017, Revision C, 
dated May 11, 2016; and Bombardier 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.

FAA's Determination and Requirements of This Proposed AD

    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 pertinent information and determined an unsafe condition 
exists and is likely to exist or develop on other products of the same 
type design.

Costs of Compliance

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

[[Page 24899]]



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

    According to the manufacturer, some of the costs of this proposed 
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.

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

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):

Bombardier, Inc.: Docket No. FAA-2017-0495; Directorate Identifier 
2017-NM-017-AD.

(a) Comments Due Date

    We must receive comments by July 17, 2017.

(b) Affected ADs

    None.

(c) Applicability

    This AD applies to all Bombardier, Inc., Model CL-600-2B19 
(Regional Jet Series 100 & 440), 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.

                   Table 1 to Paragraph (g) of This AD
------------------------------------------------------------------------
                                  Airplane serial    Applicable Service
         Airplane model               numbers             Bulletin
------------------------------------------------------------------------
CL-600-2B19....................  7002 through 8999  Bombardier Service
                                  inclusive.         Bulletin 601R-22-
                                                     017, Revision C,
                                                     dated May 11, 2016.
CL-600-2C10....................  10002 through      Bombardier Service
                                  10344 inclusive.   Bulletin 670BA-22-
                                                     007, Revision A,
                                                     dated February 16,
                                                     2016.
CL-600-2D15 and CL-600-2D24....  15001 through
                                  15400 inclusive.
------------------------------------------------------------------------

(h) Credit for Previous Actions

    (1) 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 the service information specified in 
paragraph (h)(1)(i), (h)(1)(ii), or (h)(1)(iii) of this AD, which is 
applicable to Model CL-600-2B19 (Regional Jet Series 100 & 440) 
airplanes.
    (i) Bombardier Service Bulletin 601R-22-017, dated September 24, 
2014, in conjunction with Bombardier Service Non-Incorporated 
Engineering Order (SNIEO) K601R50211 S02, dated October 31, 2014.
    (ii) Bombardier Service Bulletin 601R-22-017, Revision A, dated 
February 26, 2015, in conjunction with Bombardier SNIEO K601R50211 
S03, dated April 21, 2015; or S04, dated April 24, 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, if those actions were performed before the 
effective date of this AD using Bombardier Service Bulletin 670BA-
22-007, dated October 15, 2014, which is applicable to Model CL-600-
2C10 (Regional Jet Series 700, 701, & 702), CL-600-2D15 (Regional 
Jet

[[Page 24900]]

Series 705), and CL-600-2D24 (Regional Jet Series 900) airplanes.

(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 Aircraft 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 New York 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.

(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 Branch, ANE-171, 
FAA, New York ACO, 1600 Stewart Avenue, Suite 410, Westbury, NY 
11590; telephone 516-228-7318; fax 516-794-5531.
    (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 
ac.yul@aero.bombardier.com; Internet: http://www.bombardier.com. 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.

    Issued in Renton, Washington, on May 15, 2017.
Michael Kaszycki,
Acting Manager, Transport Airplane Directorate, Aircraft Certification 
Service.

[FR Doc. 2017-10544 Filed 5-30-17; 8:45 am]
BILLING CODE 4910-13-P


