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[Federal Register Volume 79, Number 160 (Tuesday, August 19, 2014)]
[Rules and Regulations]
[Pages 48972-48975]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: 2014-19152]

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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2014-0250; Directorate Identifier 2013-NM-165-AD; 
Amendment 39-17930; AD 2014-16-06]
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 certain 
Bombardier, Inc. Model CL-600-2B16 (CL-604 Variant) airplanes. This AD 
was prompted by reports of in-flight uncommanded rudder movements. This 
AD requires revising the airplane flight manual (AFM) to incorporate an 
uncommanded yaw motion procedure. We are issuing this AD to prevent in-
flight uncommanded rudder movements, which could lead to structural 
failure and subsequent loss of the airplane.

DATES: This AD becomes effective September 23, 2014.
    The Director of the Federal Register approved the incorporation by 
reference of certain publications listed in this AD as of September 23, 
2014.

ADDRESSES: You may examine the AD docket on the Internet at http://www.regulations.gov/#!docketDetail;D=FAA-2014-0250 or in person at the 
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.
    For service information identified in this AD, contact Bombardier, 
Inc., 400 C[ocirc]te-Vertu Road West, Dorval, Qu[eacute]bec H4S 1Y9, 
Canada; telephone 514-855-5000; fax 514-855-7401; email 
thd.crj@aero.bombardier.com; Internet http://

[[Page 48973]]

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.

FOR FURTHER INFORMATION CONTACT: Luke Walker, 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 516-228-7363; 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 CL-600-2B16 (CL-604 Variant) airplanes. The NPRM published in the 
Federal Register on April 21, 2014 (79 FR 22069). The NPRM was prompted 
by reports of in-flight uncommanded rudder movements. The NPRM proposed 
to require revising the AFM to incorporate an uncommanded yaw motion 
procedure. We are issuing this AD to prevent in-flight uncommanded 
rudder movements, which could lead to structural failure and subsequent 
loss of the airplane.
    Transport Canada Civil Aviation (TCCA), which is the aviation 
authority for Canada, has issued Canadian Airworthiness Directive CF-
2013-22, dated August 12, 2013 (referred to after this as the Mandatory 
Continuing Airworthiness Information, or ``the MCAI''), to correct an 
unsafe condition for certain Bombardier, Inc. Model CL-600-2B16 (CL-604 
Variant) airplanes. The MCAI states:

    There have been several reported incidents where Bombardier 
Regional Jet aeroplanes experienced in-flight uncommanded rudder 
movements. Investigation revealed that a failure of the voltage 
regulator inside the yaw damper actuator could lead to uncommanded 
yaw movement. If not corrected, this condition could lead to 
structural failure and the subsequent loss of the aeroplane.
    Since the Challenger 604 aeroplanes have the same system, and 
can also experience a similar problem of uncommanded yaw movement, 
Transport Canada is issuing this [Canadian] AD that mandates the 
introduction of an emergency procedure to the Aeroplane Flight 
Manual (AFM) to address the above-mentioned unsafe condition.

    You may examine the MCAI in the AD docket on the Internet at http://www.regulations.gov/#!documentDetail;D=FAA-2014-0250-0002.

Comments

    We gave the public the opportunity to participate in developing 
this AD. We received no comments on the NPRM (79 FR 22069, April 21, 
2014) or on the determination of the cost to the public.

``Contacting the Manufacturer'' Paragraph in This AD

    Since late 2006, we have included a standard paragraph titled 
``Airworthy Product'' in all MCAI ADs in which the FAA develops an AD 
based on a foreign authority's AD.
    We have become aware that some operators have misunderstood or 
misinterpreted the Airworthy Product paragraph to allow the owner/
operator to use messages provided by the manufacturer as approval of 
deviations during the accomplishment of an AD-mandated action. The 
Airworthy Product paragraph does not approve messages or other 
information provided by the manufacturer for deviations to the 
requirements of the AD-mandated actions. The Airworthy Product 
paragraph only addresses the requirement to contact the manufacturer 
for corrective actions for the identified unsafe condition and does not 
cover deviations from other AD requirements. However, deviations to AD-
required actions are addressed in 14 CFR 39.17, and anyone may request 
the approval for an alternative method of compliance to the AD-required 
actions using the procedures found in 14 CFR 39.19.
    To address this misunderstanding and misinterpretation of the 
Airworthy Product paragraph, we have changed the paragraph and retitled 
it ``Contacting the Manufacturer.'' This paragraph now clarifies that 
for any requirement in this AD to obtain corrective actions from a 
manufacturer, the actions must be accomplished using a method approved 
by the FAA, TCCA, or Bombardier, Inc.'s TCCA Design Approval 
Organization (DAO).
    The Contacting the Manufacturer paragraph also clarifies that, if 
approved by the DAO, the approval must include the DAO-authorized 
signature. The DAO signature indicates that the data and information 
contained in the document are TCCA-approved, which is also FAA-
approved. Messages and other information provided by the manufacturer 
that do not contain the DAO-authorized signature approval are not TCCA-
approved, unless TCCA directly approves the manufacturer's message or 
other information.
    This clarification does not remove flexibility previously afforded 
by the Airworthy Product paragraph. Consistent with long-standing FAA 
policy, such flexibility was never intended for required actions. This 
is also consistent with the recommendation of the Airworthiness 
Directive Implementation Aviation Rulemaking Committee to increase 
flexibility in complying with ADs by identifying those actions in 
manufacturers' service instructions that are ``Required for 
Compliance'' with ADs. We continue to work with manufacturers to 
implement this recommendation. But once we determine that an action is 
required, any deviation from the requirement must be approved as an 
alternative method of compliance.
    We also have decided not to include a generic reference to either 
the ``delegated agent'' or ``design approval holder (DAH) with State of 
Design Authority design organization approval,'' but instead we have 
provided the specific delegation approval granted by the State of 
Design Authority for the DAH throughout this AD.

Conclusion

    We reviewed the relevant data 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 (79 FR 22069, April 21, 2014) for correcting the unsafe condition; 
and
     Do not add any additional burden upon the public than was 
already proposed in the NPRM (79 FR 22069, April 21, 2014).
    We also determined that these changes will not increase the 
economic burden on any operator or increase the scope of this AD.

Costs of Compliance

    We estimate that this AD affects 116 airplanes of U.S. registry.
    We also estimate that it will take about 1 work-hour per product to 
comply with the basic requirements of this AD. The average labor rate 
is $85 per work-hour. Required parts will cost about $0 per product. 
Based on these figures, we estimate the cost of this AD on U.S. 
operators to be $9,860, or $85 per product.

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

[[Page 48974]]

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.

Examining the AD Docket

    You may examine the AD docket on the Internet at http://www.regulations. gov/#!docketDetail;D=FAA-2014-0250; 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 Operations office 
(telephone 800-647-5527) is in the ADDRESSES section.

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):

2014-16-06 Bombardier, Inc.: Amendment 39-17930. Docket No. FAA-
2014-0250; Directorate Identifier 2013-NM-165-AD.

(a) Effective Date

    This AD becomes effective September 23, 2014.

(b) Affected ADs

    None.

(c) Applicability

    This AD applies to Bombardier, Inc. Model CL-600-2B16 (CL-604 
Variant) airplanes, certificated in any category, serial numbers (S/
Ns) 5301 through 5665 inclusive, and 5701 and subsequent.

(d) Subject

    Air Transport Association (ATA) of America Code 22, Autopilot 
System; and Code 27, Rudder Actuator.

(e) Reason

    This AD was prompted by reports of in-flight uncommanded rudder 
movements. We are issuing this AD to prevent in-flight uncommanded 
rudder movements, which could lead to structural failure and 
subsequent loss of the airplane.

(f) Compliance

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

(g) Airplane Flight Manual (AFM) Revision

    Within 30 days after the effective date of this AD, revise the 
Emergency Procedures Section of the applicable Bombardier AFM to 
incorporate the uncommanded yaw motion procedure specified in 
paragraph (g)(1) or (g)(2) of this AD, as applicable.
    (1) For Model CL-600-2B16 (CL-604 Variant) airplanes having S/Ns 
5301 through 5665 inclusive: Procedure 1.C., Uncommanded Yaw Motion, 
of Section 03-06, Automatic Flight Control System, of Chapter 3--
Emergency Procedures, of the Bombardier Challenger CL-604 AFM, PSP 
604-1, Revision 89, dated July 8, 2013.
    (2) For Model CL-600-2B16 (CL-604 Variant) airplanes having S/Ns 
5701 and subsequent: Procedure 1.C., Uncommanded Yaw Motion, of 
Section 03-06, Automatic Flight Control System, of Chapter 3--
Emergency Procedures, of the Bombardier Challenger CL-605 AFM, PSP 
605-1, Revision 25, dated July 8, 2013.

(h) Other FAA AD Provisions

    The following provisions also apply to this AD:
    (1) Alternative Methods of Compliance (AMOCs): The Manager, FAA, 
New York Aircraft Certification Office (ACO), ANE-170, 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 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. The AMOC approval letter must 
specifically reference this AD.
    (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, Engine and Propeller Directorate, 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.

(i) Related Information

    Refer to Mandatory Continuing Airworthiness Information (MCAI) 
Canadian Airworthiness Directive CF-2013-22, dated August 12, 2013, 
for related information. This MCAI may be found in the AD docket on 
the Internet at http://www.regulations. gov/#!documentDetail; D=FAA-
2014-0250-0002.

(j) 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) Procedure 1.C., Uncommanded Yaw Motion, of Section 03-06, 
Automatic Flight Control System, of Chapter 3--Emergency Procedures, 
of the Bombardier Challenger CL-604 Airplane Flight Manual, PSP 604-
1, Revision 89, dated July 8, 2013.
    (ii) Procedure 1.C., Uncommanded Yaw Motion, of Section 03-06, 
Automatic Flight Control System, of Chapter 3--Emergency Procedures, 
of the Bombardier Challenger CL-605 Airplane Flight Manual, PSP 605-
1, Revision 25, dated July 8, 2013.
    (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; telephone 514-855-5000; fax 514-855-
7401; email thd.crj@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

[[Page 48975]]

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 July 30, 2014.
Jeffrey E. Duven,
Manager, Transport Airplane Directorate, Aircraft Certification 
Service.
[FR Doc. 2014-19152 Filed 8-18-14; 8:45 am]
BILLING CODE 4910-13-P
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