80 FR 51459 - Airworthiness Directives; Bombardier, Inc. Airplanes

DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration

Federal Register Volume 80, Issue 164 (August 25, 2015)

Page Range		51459-51461
FR Document		2015-20584

We are adopting a new airworthiness directive (AD) for certain Bombardier, Inc. Model DHC-8-400 series airplanes. This AD was prompted by an in-service report of an uncommanded and unannunciated nose wheel steering during airplane pushback from the gate. This AD requires installing new cable assemblies with a pull-down resistor. We are issuing this AD to prevent an uncommanded nose wheel steering during takeoff or landing in the event of an open circuit in the steering system, and possible consequent runway excursion.

Federal Register, Volume 80 Issue 164 (Tuesday, August 25, 2015)

[Federal Register Volume 80, Number 164 (Tuesday, August 25, 2015)]
[Rules and Regulations]
[Pages 51459-51461]
From the Federal Register Online [www.thefederalregister.org]
[FR Doc No: 2015-20584]

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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2014-1050; Directorate Identifier 2014-NM-123-AD;
Amendment 39-18241; AD 2015-17-08]
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 DHC-8-400 series airplanes. This AD was prompted
by an in-service report of an uncommanded and unannunciated nose wheel
steering during airplane pushback from the gate. This AD requires
installing new cable assemblies with a pull-down resistor. We are
issuing this AD to prevent an uncommanded nose wheel steering during
takeoff or landing in the event of an open circuit in the steering
system, and possible consequent runway excursion.

DATES: This AD becomes effective September 29, 2015.
The Director of the Federal Register approved the incorporation by
reference of a certain publication listed in this AD as of September
29, 2015.

ADDRESSES: You may examine the AD docket on the Internet at http://www.regulations.gov/#!docketDetail;D=FAA-2014-1050 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., 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-2014-
1050.

FOR FURTHER INFORMATION CONTACT: Assata Dessaline, Aerospace Engineer,
Avionics and Services Branch, ANE-172, FAA, New York Aircraft
Certification Office (ACO), 1600 Stewart Avenue, Suite 410, Westbury,
NY 11590; telephone (516) 228-7301; 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-8-400 series airplanes. The NPRM published in the Federal
Register on January 23, 2015 (80 FR 3504).
The Transport Canada Civil Aviation (TCCA), which is the aviation
authority for Canada, has issued Canadian Airworthiness Directive CF-
2013-38, dated November 28, 2013 (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-
400, -401, and -402 series airplanes. The MCAI states:

There has been one in-service report of an un-commanded and un-
annunciated nose wheel steering during aeroplane push-back from the
gate. The investigation revealed that a design deficiency exists
within the steering control unit (SCU) where an open circuit may not
be adequately detected and annunciated to the flight crew. A
sustained open circuit could result in an un-commanded and un-
annunciated nose wheel steering input.
Un-commanded nose wheel steering during takeoff or landing may
lead to a runway excursion.
This [Canadian] AD mandates the installation of new cable
assemblies, with a pull-down resistor, to ensure that the nose wheel
steering system reverts to fail-safe free castor mode in the event
of an open circuit in the steering system.

You may examine the MCAI in the AD docket on the Internet at http://www.regulations.gov/#!documentDetail;D=FAA-2014-1050-0002.

Comments

We gave the public the opportunity to participate in developing
this AD. The following presents the comment received on the NPRM (80 FR
3504, January 23, 2015) and the FAA's response to each comment.

Request To Remove Certain Service Information Procedures

Horizon Air requested that we amend paragraph (g) of the proposed
AD (80 FR 3504, January 23, 2015) to exclude Part A, ``Job Set-up,''
and Part C ``Close Out,'' sections of the Accomplishment Instructions
in Bombardier Service

[[Page 51460]]

Bulletin 84-32-122, Revision A, dated August 28, 2013 Horizon Air
stated that Part A, ``Job Set-up,'' and Part C, ``Close Out,'' do not
directly correct the unsafe condition. Horizon Air explained that
requiring operators to perform the actions in these sections in a
specific manner restricts the operator's ability to perform other
maintenance in conjunction with performing the corrective action.
We agree with the commenter's request to exclude the ``Job Set-up''
and ``Close Out'' sections of the Accomplishment Instructions of
Bombardier Service Bulletin 84-32-122, Revision A, dated August 28,
2013. We have revised paragraph (g) of this AD to require
accomplishment of only paragraph B., ``Procedure,'' of the
Accomplishment Instructions of Bombardier Service Bulletin 84-32-122,
Revision A, dated October 4, 2013.

Conclusion

We reviewed the relevant data, considered the comment received, and
determined that air safety and the public interest require adopting
this AD with the change described previously and minor editorial
changes. We have determined that these minor changes:
Are consistent with the intent that was proposed in the
NPRM (80 FR 3504, January 23, 2015) for correcting the unsafe
condition; and
Do not add any additional burden upon the public than was
already proposed in the NPRM (80 FR 3504, January 23, 2015).
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, Inc. has issued Service Bulletin 84-32-122, Revision A,
dated October 4, 2013. This service information describes procedures
for incorporating Bombardier Modification Summary (Modsum) 4-126585 to
install new cable assemblies with a pull-down resistor to the pilot
hand control and rudder pedal potentiometer of the nose wheel steering
control unit. 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 of this
AD.

Costs of Compliance

We estimate that this AD affects 81 airplanes of U.S. registry.
We also estimate that it will take about 6 work-hours 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 $2,541 per
product. Based on these figures, we estimate the cost of this AD on
U.S. operators to be $247,131, or $3,051 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 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/#!documentDetail;D=FAA-2014-1050; 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):

2015-17-08 Bombardier, Inc.: Amendment 39-18241. Docket No. FAA-
2014-1050; Directorate Identifier 2014-NM-123-AD.

(a) Effective Date

This AD becomes effective September 29, 2015.

(b) Affected ADs

None.

This AD applies to Bombardier, Inc. Model DHC-8-400, -401, and-
402 series airplanes, certificated in any category, serial numbers
4001 through 4448 inclusive.

(d) Subject

Air Transport Association (ATA) of America Code 32, Landing
gear.

(e) Reason

This AD was prompted by an in-service report of an uncommanded
and unannunciated nose wheel steering during airplane pushback from
the gate. We are issuing this AD to prevent an uncommanded nose
wheel steering during takeoff or landing in the event of an open
circuit in the steering system, and possible consequent runway
excursion.

(f) Compliance

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

(g) Incorporate Bombardier Modification Summary (Modsum) 4-126585

Within 2,000 flight cycles or 12 months after the effective date
of this AD, whichever occurs first: Incorporate Bombardier Modsum 4-
126585 to install new cable assemblies, with a pull-down resistor,
in accordance with paragraph B., ``Procedure,'' of the
Accomplishment Instructions of Bombardier Service Bulletin 84-32-
122, Revision A, dated October 4, 2013.

[[Page 51461]]

(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 84-32-122, dated
August 28, 2013. This service information is not incorporated by
reference in this AD.

(i) 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 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, FAA; or the 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 Airworthiness Directive CF-2013-38, dated November
28, 2013, for related information. This MCAI may be found in the AD
docket on the Internet at http://www.regulations.gov/#!documentDetail;D=FAA-2014-1050.
(2) Service information identified in this AD that is not
incorporated by reference may be obtained 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 84-32-122, Revision A, dated
October 4, 2013.
(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; email 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 August 10, 2015.
Michael Kaszycki,
Acting Manager, Transport Airplane Directorate, Aircraft Certification
Service.
[FR Doc. 2015-20584 Filed 8-24-15; 8:45 am]
BILLING CODE 4910-13-P

Federal Register / Vol. 80, No. 164 / Tuesday, August 25, 2015 / Rules and Regulations 51461

(h) Credit for Previous Actions (4) You may view this service information www.regulations.gov/
This paragraph provides credit for actions at the FAA, Transport Airplane Directorate, #!docketDetail;D=FAA-2015-0676 or in
required by paragraph (g) of this AD, if those 1601 Lind Avenue SW., Renton, WA. For person at the Docket Management
actions were performed before the effective information on the availability of this
Facility, U.S. Department of
date of this AD using Bombardier Service material at the FAA, call 425–227–1221.
(5) You may view this service information Transportation, Docket Operations, M–
Bulletin 84–32–122, dated August 28, 2013. 30, West Building Ground Floor, Room
This service information is not incorporated that is incorporated by reference at the
by reference in this AD. National Archives and Records W12–140, 1200 New Jersey Avenue SE.,
Administration (NARA). For information on Washington, DC.
(i) Other FAA AD Provisions the availability of this material at NARA, call For service information identified in
The following provisions also apply to this 202–741–6030, or go to: http:// this AD, contact Bombardier, Inc., 400
AD: www.archives.gov/federal-register/cfr/ibr- Côte-Vertu Road West, Dorval, Québec
(1) Alternative Methods of Compliance locations.html.
(AMOCs): The Manager, New York Aircraft
H4S 1Y9, Canada; telephone 514–855–
Issued in Renton, Washington, on August 5000; fax 514–855–7401; email thd.crj@
Certification Office (ACO), ANE–170, FAA,
10, 2015. aero.bombardier.com; Internet http://
has the authority to approve AMOCs for this
AD, if requested using the procedures found Michael Kaszycki, www.bombardier.com. You may view
in 14 CFR 39.19. In accordance with 14 CFR Acting Manager, Transport Airplane this referenced service information at
39.19, send your request to your principal Directorate, Aircraft Certification Service. the FAA, Transport Airplane
inspector or local Flight Standards District [FR Doc. 2015–20584 Filed 8–24–15; 8:45 am] Directorate, 1601 Lind Avenue SW.,
Office, as appropriate. If sending information Renton, WA. For information on the
BILLING CODE 4910–13–P
directly to the New York ACO, send it to
ATTN: Program Manager, Continuing availability of this material at the FAA,
Operational Safety, FAA, New York ACO, call 425–227–1221. It is also available
1600 Stewart Avenue, Suite 410, Westbury, DEPARTMENT OF TRANSPORTATION on the Internet at http://
NY 11590; telephone 516–228–7300; fax www.regulations.gov by searching for
516–794–5531. Before using any approved Federal Aviation Administration and locating Docket No. FAA–2015–
AMOC, notify your appropriate principal 0676.
inspector, or lacking a principal inspector, 14 CFR Part 39
the manager of the local flight standards FOR FURTHER INFORMATION CONTACT:
district office/certificate holding district [Docket No. FAA–2015–0676; Directorate Fabio Buttitta, Aerospace Engineer,
office. The AMOC approval letter must Identifier 2014–NM–164–AD; Amendment
39–18238; AD 2015–17–05]
Airframe and Mechanical Systems
specifically reference this AD. Branch, ANE–171, FAA, New York
(2) Contacting the Manufacturer: For any RIN 2120–AA64
requirement in this AD to obtain corrective
Aircraft Certification Office (ACO), 1600
actions from a manufacturer, the action must Stewart Avenue, Suite 410, Westbury,
Airworthiness Directives; Bombardier, NY 11590; telephone 516–228–7303; fax
be accomplished using a method approved
by the Manager, New York ACO, ANE–170, Inc. Airplanes 516–794–5531.
FAA; or the Transport Canada Civil Aviation AGENCY: Federal Aviation SUPPLEMENTARY INFORMATION:
(TCCA); or Bombardier, Inc.’s, TCCA Design
Approval Organization (DAO). If approved by
Administration (FAA), Department of
Transportation (DOT). Discussion
the DAO, the approval must include the
DAO-authorized signature. ACTION: Final rule. We issued a notice of proposed
rulemaking (NPRM) to amend 14 CFR
(j) Related Information SUMMARY: We are adopting a new part 39 by adding an AD that would
(1) Refer to Mandatory Continuing airworthiness directive (AD) for certain apply to certain Bombardier, Inc. Model
Airworthiness Information (MCAI) Canadian Bombardier, Inc. Model BD–700–1A10 BD–700–1A10 and BD–700–1A11
Airworthiness Directive CF–2013–38, dated and BD–700–1A11 airplanes. This AD
November 28, 2013, for related information. airplanes. The NPRM published in the
This MCAI may be found in the AD docket
was prompted by a report of several Federal Register on March 30, 2015 (80
on the Internet at http:// events where pilots experienced FR 16608).
www.regulations.gov/ difficulty in lateral control of the Transport Canada Civil Aviation
#!documentDetail;D=FAA-2014-1050. airplane after doing a climb through (TCCA), which is the aviation authority
(2) Service information identified in this heavy rain conditions and a for Canada, has issued Canadian
AD that is not incorporated by reference may determination that the cause was water Airworthiness Directive CF–2014–23,
be obtained at the addresses specified in ingress in the aileron control pulley
paragraphs (k)(3) and (k)(4) of this AD. dated July 18, 2014 (referred to after this
assembly. This AD requires, for certain as the Mandatory Continuing
(k) Material Incorporated by Reference airplanes, inspecting for correct Airworthiness Information, or ‘‘the
(1) The Director of the Federal Register clearance and rework if necessary, and, MCAI’’), to correct an unsafe condition
approved the incorporation by reference for certain other airplanes, installing a for certain Bombardier, Inc. Model BD–
(IBR) of the service information listed in this cover for the aileron pulley assembly. 700–1A10 and BD–700–1A11 airplanes.
paragraph under 5 U.S.C. 552(a) and 1 CFR We are issuing this AD to prevent water The MCAI states:
part 51. ingress in the aileron control pulley
(2) You must use this service information There have been several reports whereby
assembly, which could freeze in cold
as applicable to do the actions required by pilots have experienced difficulty in lateral
conditions and result in reduced control control following climb through heavy rain
this AD, unless this AD specifies otherwise.
(i) Bombardier Service Bulletin 84–32–122, of the airplane. conditions. In each event, the pilots were
Revision A, dated October 4, 2013. DATES: This AD becomes effective able to overcome this difficulty without
(ii) Reserved. September 29, 2015. disconnecting the aileron control. An
Lhorne on DSK5TPTVN1PROD with RULES

(3) For service information identified in The Director of the Federal Register investigation has determined that the root
this AD, contact Bombardier, Inc., Q-Series approved the incorporation by reference cause of the restricted movement of the
Technical Help Desk, 123 Garratt Boulevard, of certain publications listed in this AD aileron was due to water ingress into the
Toronto, Ontario M3K 1Y5, Canada; wing root aileron control pulley assembly
telephone 416–375–4000; fax 416–375–4539;
as of September 29, 2015. through a gap on the wing-to-fuselage fairing
email thd.qseries@aero.bombardier.com; ADDRESSES: You may examine the AD resulting in freezing of the aileron control
Internet http://www.bombardier.com. docket on the Internet at http:// system.

VerDate Sep<11>2014 15:04 Aug 24, 2015 Jkt 235001 PO 00000 Frm 00039 Fmt 4700 Sfmt 4700 E:\FR\FM\25AUR1.SGM 25AUR1

Document Created: 2018-02-23 11:03:05
Document Modified: 2018-02-23 11:03:05

Category		Regulatory Information
Collection		Federal Register
sudoc Class		AE 2.7: GS 4.107: AE 2.106:
Publisher		Office of the Federal Register, National Archives and Records Administration
Section		Rules and Regulations
Action		Final rule.
Dates		This AD becomes effective September 29, 2015.
Contact		Assata Dessaline, Aerospace Engineer, Avionics and Services Branch, ANE-172, FAA, New York Aircraft Certification Office (ACO), 1600 Stewart Avenue, Suite 410, Westbury, NY 11590; telephone (516) 228-7301; fax (516) 794-5531.
FR Citation		80 FR 51459
RIN Number		2120-AA64
CFR Associated		Air Transportation; Aircraft; Aviation Safety; Incorporation by Reference and Safety

80 FR 51459 - Airworthiness Directives; Bombardier, Inc. Airplanes

DEPARTMENT OF TRANSPORTATIONFederal Aviation Administration

Federal Register Volume 80, Issue 164 (August 25, 2015)

DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration