Document ID: FAA-2015-3988-0001
Agency: faa
Document Type: Proposed Rule
Title: Airworthiness Directives: Bombardier, Inc. Airplanes
Posted Date: 2015-10-19T04:00Z

[Federal Register Volume 80, Number 201 (Monday, October 19, 2015)]
[Proposed Rules]
[Pages 63141-63145]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2015-26222]

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

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2015-3988; Directorate Identifier 2015-NM-005-AD]
RIN 2120-AA64

Airworthiness Directives; Bombardier, Inc. Airplanes

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Notice of proposed rulemaking (NPRM).

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

SUMMARY: We propose to supersede Airworthiness Directive (AD) 2014-17-
51, for certain Bombardier, Inc. Model CL-600-2B16 airplanes. AD 2014-
17-51 currently requires inspecting the inboard flap fasteners of the 
hinge-box forward fitting at Wing Station (WS) 76.50 and WS 127.25 to 
determine the orientation and condition of the fasteners, as 
applicable, and replacement or repetitive inspections of the fasteners 
if necessary. AD 2014-17-51 also provides for optional terminating 
action for the requirements of that AD. Since we issued AD 2014-17-51, 
we have determined that additional action is necessary. This proposed 
AD would also require accomplishment of the previously optional 
terminating action. We are proposing this AD to detect and correct 
incorrectly oriented or fractured fasteners, which could result in 
premature failure of the fasteners attaching the inboard flap hinge-box 
forward fitting; failure of the fasteners could lead to the detachment 
of the flap hinge box and the flap surface, and consequent loss of 
control of the airplane.

DATES: We must receive comments on this proposed AD by December 3, 
2015.

ADDRESSES: You may send comments 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: U.S. Department of Transportation, Docket 
Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New 
Jersey Avenue SE., Washington, DC, between 9 a.m. and 5 p.m., Monday 
through Friday, except Federal holidays.

[[Page 63142]]

    For service information identified in this proposed 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. 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-2015-
3988; 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: Aziz Ahmed, Aerospace Engineer, 
Propulsion and Services Branch, ANE-173, FAA, New York Aircraft 
Certification Office (ACO), 1600 Stewart Avenue, Suite 410, Westbury, 
NY 11590; telephone 516-228-7329; 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-2015-3988; 
Directorate Identifier 2015-NM-005-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

    On October 13, 2014, we issued AD 2014-17-51, Amendment 39-17999 
(79 FR 64088, October 28, 2014). AD 2014-17-51 requires actions 
intended to address an unsafe condition on certain Bombardier, Inc. 
Model CL-600-2B16 airplanes.
    The preamble to AD 2014-17-51, Amendment 39-17999 (79 FR 64088, 
October 28, 2014), explains that we consider the requirements ``interim 
action'' and were considering further rulemaking. We now have 
determined that further rulemaking is indeed necessary, and this 
proposed AD follows from that determination.
    Transport Canada Civil Aviation (TCCA), which is the aviation 
authority for Canada, has issued Canadian Airworthiness Directive CF-
2014-27R1, dated August 29, 2014 (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 airplanes. The MCAI states:

    There have been three in-service reports on 604 Variant 
aeroplanes of a fractured fastener head on the inboard flap hinge-
box forward fitting at Wing Station (WS) 76.50, found during a 
routine maintenance inspection. Investigation revealed that the 
installation of these fasteners on the inboard flap hinge-box 
forward fittings at WS 76.50 and WS 127.25, on both wings, does not 
conform to the engineering drawings. Incorrect installation may 
result in premature failure of the fasteners attaching the inboard 
flap hinge-box forward fitting. Failure of the fasteners could lead 
to the detachment of the flap hinge box and consequently the 
detachment of the flap surface. The loss of a flap surface could 
adversely affect the continued safe operation of the aeroplane.
    The original issue of [Canadian] AD CF-2013-39 [http://www.regulations.gov/#!documentDetail;D=FAA-2014-0054-0002] [which 
corresponds to FAA AD 2014-03-17, Amendment 39-17754 (79 FR 9389, 
February 19, 2014)] mandated a detailed visual inspection (DVI) of 
each inboard flap hinge-box forward fitting, on both wings, and 
rectification as required. Incorrectly oriented fasteners require 
repetitive inspections until the terminating action is accomplished.
    After the issuance of [Canadian] AD CF-2013-39, there has been 
one reported incident on a 604 Variant aeroplane where four 
fasteners were found fractured on the same flap hinge-box forward 
fitting. The investigation determined that the fasteners were 
incorrectly installed.
    The original issue of this [Canadian] AD was issued to reduce 
the initial and repetitive inspection intervals previously mandated 
in [Canadian] AD CF-2013-39, and to impose replacement of the 
incorrectly oriented fasteners within 24 months. The CL-600-1A11, -
2A12 and -2B16 (601-3A/-3R Variant) aeroplanes are addressed through 
[Canadian] AD CF-2013-39R1.
    Revision 1 of this [Canadian] AD is issued to clarify the 
requirements for the initial and repetitive inspections.

    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-2015-
3988.

Related Service Information Under 1 CFR Part 51

    Bombardier has issued Alert Service Bulletins:
     A604-57-006, Revision 04, dated November 12, 2014, 
including Appendices 1 and 2, dated September 26, 2013,
     A605-57-004, Revision 04, dated November 12, 2014, 
including Appendices 1 and 2, dated September 26, 2013, and
    The service information describes detailed visual inspection of 
each inboard flap fastener of the hinge-box forward fitting at WS 76.50 
and WS 127.25, on both wings, and, if necessary, replacement of the 
fasteners. 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 
NPRM.

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 285 airplanes of U.S. 
registry.
    The actions required by AD 2014-17-51, Amendment 39-17999 (79 FR 
64088, October 28, 2014), and retained in this proposed AD take about 1 
work-hour per product, at an average labor rate of $85 per work-hour. 
Required parts cost about $0 per product. Based on these figures, the 
estimated cost of the actions that are required by AD 2014-17-51 is $85 
per product.
    We also estimate that it would take about 58 work-hours per product 
to comply with the basic requirements of this proposed AD. The average 
labor rate is $85 per work-hour. Required parts would cost about $753 
per product. Based on these figures, we estimate the cost of this 
proposed AD on U.S. operators to be $1,619,655, or $5,683 per product.

[[Page 63143]]

    In addition, we estimate that any necessary follow-on actions would 
take about 58 work-hours and require parts costing $753, for a cost of 
$5,683 per product. We have no way of determining the number of 
aircraft that might need this action.
    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 removing Airworthiness Directive (AD) 
2014-17-51, Amendment 39-17999 (79 FR 64088, October 28, 2014), and 
adding the following new AD:

Bombardier, Inc.: Docket No. FAA-2015-3988; Directorate Identifier 
2015-NM-005-AD.

(a) Comments Due Date

    We must receive comments by December 3, 2015.

(b) Affected ADs

    (1) This AD replaces AD 2014-17-51, Amendment 39-17999 (79 FR 
64088, October 28, 2014).
    (2) This AD affects AD 2014-03-17, Amendment 39-17754 (79 FR 
9389, February 19, 2014), only for the airplanes identified in 
paragraph (c) of this AD.

(c) Applicability

    This AD applies to Bombardier, Inc. Model CL-600-2B16 airplanes, 
certificated in any category, serial numbers 5301 through 5665 
inclusive, and 5701 through 5920 inclusive.

(d) Subject

    Air Transport Association (ATA) of America Code 57, Wings.

(e) Reason

    This AD was prompted by reports of fractured fastener heads on 
the inboard flap hinge-box forward fitting at Wing Station (WS) 
76.50 due to incorrect installation. We are issuing this AD to 
detect and correct incorrectly oriented or fractured fasteners, 
which could result in premature failure of the fasteners attaching 
the inboard flap hinge-box forward fitting; failure of the fasteners 
could lead to the detachment of the flap hinge box and the flap 
surface, and consequent loss of control of the airplane.

(f) Compliance

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

(g) Retained Inspection, With New Service Information: Airplanes Not 
Previously Inspected

    This paragraph restates the requirements of paragraph (g) of AD 
2014-17-51, Amendment 39-17999 (79 FR 64088, October 28, 2014), with 
new service information. For airplanes on which the actions required 
by AD 2014-03-17, Amendment 39-17754 (79 FR 9389, February 19, 
2014), have not been done as of November 12, 2014 (the effective 
date of AD 2014-17-51): Within 10 flight cycles after November 12, 
2014, or within 100 flight cycles after March 6, 2014 (the effective 
date of AD 2014-03-17, Amendment 39-17754 (79 FR 9389, February 19, 
2014)), whichever occurs first, do a detailed visual inspection of 
each inboard flap fastener of the hinge-box forward fitting at WS 
76.50 and WS 127.25, on both wings, to determine if the fasteners 
are correctly oriented and intact (non-fractured, with intact 
fastener head). Do the inspection in accordance with the 
Accomplishment Instructions of Bombardier Alert Service Bulletin 
A604-57-006, Revision 01, dated September 26, 2013, including 
Appendices 1 and 2, dated September 26, 2013, Revision 02, dated 
January 22, 2014, including Appendices 1 and 2, dated September 26, 
2013, or Revision 04, dated November 12, 2014, including Appendices 
1 and 2, dated September 26, 2013 (for serial numbers 5301 through 
5665 inclusive); or Bombardier Alert Service Bulletin A605-57-004, 
Revision 01, dated September 26, 2013, including Appendices 1 and 2, 
dated September 26, 2013, Revision 02, dated January 22, 2014, 
including Appendices 1 and 2, dated September 26, 2013, or Revision 
04, dated November 12, 2014, including Appendices 1 and 2, dated 
September 26, 2013 (for serial numbers 5701 through 5920 inclusive). 
As of the effective date of this AD, only use Bombardier Alert 
Service Bulletin A604-57-006, Revision 04, dated November 12, 2014, 
including Appendices 1 and 2, dated September 26, 2013; or 
Bombardier Alert Service Bulletin A605-57-004, Revision 04, dated 
November 12, 2014, including Appendices 1 and 2, dated September 26, 
2013; as applicable; for the actions required by this paragraph.
    (1) If all fasteners are found intact and correctly oriented, no 
further action is required by this AD.
    (2) If any fastener is found fractured: Before further flight, 
remove and replace all forward and aft fasteners at WS 76.50 and WS 
127.25, regardless of condition or orientation, on both wings, in 
accordance with the Accomplishment Instructions of the applicable 
service information identified in paragraph (g) of this AD. As of 
the effective date of this AD, only use Bombardier Alert Service 
Bulletin A604-57-006, Revision 04, dated November 12, 2014, 
including Appendices 1 and 2, dated September 26, 2013; or 
Bombardier Alert Service Bulletin A605-57-004, Revision 04, dated 
November 12, 2014, including Appendices 1 and 2, dated September 26, 
2013; as applicable; for the actions required by this paragraph. 
After replacement of all fasteners as required by this paragraph of 
this AD, no further action is required by this AD.

[[Page 63144]]

    (3) If any incorrectly oriented but intact fastener is found, 
and no fractured fastener is found, repeat the inspection required 
by paragraph (g) of this AD thereafter at intervals not to exceed 10 
flight cycles, until the requirements of paragraph (i)(1) or (k) of 
this AD have been done.

(h) Retained Actions, With New Service Information: Airplanes 
Previously Inspected, Having Incorrectly Oriented Fastener(s)

    This paragraph restates the requirements of paragraph (h) of AD 
2014-17-51, Amendment 39-17999 (79 FR 64088, October 28, 2014), with 
new service information. For airplanes on which an inspection 
required by paragraph (g) or (j) of AD 2014-03-17, Amendment 39-
17754 (79 FR 9389, February 19, 2014), has been done as of November 
12, 2014 (the effective date of AD 2014-17-51), and on which any 
incorrectly oriented fastener, but no fractured fastener, was found: 
Except as provided by paragraph (i)(3) of this AD, do a detailed 
visual inspection of all inboard flap fasteners of the hinge-box 
forward fitting at WS 76.50 and WS 127.25, on both wings, to 
determine if the fasteners are intact (non-fractured, with intact 
fastener head). Inspect within 10 flight cycles after November 12, 
2014, or within 100 flight cycles after the most recent inspection 
done as required by AD 2014-03-17, whichever occurs first. Inspect 
in accordance with the Accomplishment Instructions of the applicable 
service information identified in paragraph (g) of this AD. As of 
the effective date of this AD, only use Bombardier Alert Service 
Bulletin A604-57-006, Revision 04, dated November 12, 2014, 
including Appendices 1 and 2, dated September 26, 2013; or 
Bombardier Alert Service Bulletin A605-57-004, Revision 04, dated 
November 12, 2014, including Appendices 1 and 2, dated September 26, 
2013; as applicable; for the actions required by this paragraph.
    (1) If all fasteners are found intact, repeat the inspection 
thereafter at intervals not to exceed 10 flight cycles, until the 
requirements of paragraph (i)(1) or (k) of this AD have been done.
    (2) If any fastener is found fractured: Before further flight, 
remove and replace all forward and aft fasteners at WS 76.50 and WS 
127.25, regardless of condition or orientation, on both wings, in 
accordance with the Accomplishment Instructions of the applicable 
service information identified in paragraph (g) of this AD. As of 
the effective date of this AD, only use Bombardier Alert Service 
Bulletin A604-57-006, Revision 04, dated November 12, 2014, 
including Appendices 1 and 2, dated September 26, 2013; or 
Bombardier Alert Service Bulletin A605-57-004, Revision 04, dated 
November 12, 2014, including Appendices 1 and 2, dated September 26, 
2013; as applicable; for the actions required by this paragraph. 
After replacement of all fasteners as required by this paragraph, no 
further action is required by this AD.

(i) Retained Terminating Action, With New Service Information

    This paragraph restates the terminating action specified in 
paragraph (i) of AD 2014-17-51, Amendment 39-17999 (79 FR 64088, 
October 28, 2014), with new service information.
    (1) Replacement of all forward and aft fasteners at WS 76.50 and 
WS 127.25, on both wings, in accordance with the Accomplishment 
Instructions of the applicable service information identified in 
paragraph (g) of this AD, terminates the requirements of this AD. As 
of the effective date of this AD, only use Bombardier Alert Service 
Bulletin A604-57-006, Revision 04, dated November 12, 2014, 
including Appendices 1 and 2, dated September 26, 2013; or 
Bombardier Alert Service Bulletin A605-57-004, Revision 04, dated 
November 12, 2014, including Appendices 1 and 2, dated September 26, 
2013; as applicable; for the actions specified in this paragraph.
    (2) Accomplishment of the applicable requirements of this AD 
constitutes terminating action for the requirements of AD 2014-03-
17, Amendment 39-17754 (79 FR 9389, February 19, 2014), for that 
airplane only.
    (3) Replacement of all fractured and incorrectly oriented 
fasteners before November 12, 2014 (the effective date of AD 2014-
17-51, Amendment 39-17999 (79 FR 64088, October 28, 2014)), as 
provided by paragraph (i) or (k) of AD 2014-03-17, Amendment 39-
17754 (79 FR 9389, February 19, 2014), is acceptable for compliance 
with the requirements of this AD.

(j) Retained Special Flight Permit Prohibition

    This paragraph restates the requirements of paragraph (j) of AD 
2014-17-51, Amendment 39-17999 (79 FR 64088, October 28, 2014). 
Special flight permits to operate the airplane to a location where 
the airplane can be repaired in accordance with sections 21.197 and 
21.199 of the Federal Aviation Regulations (14 CFR 21.197 and 
21.199) are not allowed.

(k) New Requirement of This AD: Post-Inspection Fastener Replacement

    For airplanes on which incorrectly oriented fasteners were found 
during any inspection required by paragraph (g), (g)(3), (h), or 
(h)(1) of this AD, but none were found to be fractured: Within 24 
months after the effective date of this AD, remove and replace all 
forward and aft fasteners at WS 76.50 and WS 127.25, regardless of 
condition or orientation, on both wings, in accordance with the 
Accomplishment Instructions of Bombardier Alert Service Bulletin 
A604-57-006, Revision 04, dated November 12, 2014, including 
Appendices 1 and 2, dated September 26, 2013 (for serial numbers 
5301 through 5665 inclusive); or Bombardier Alert Service Bulletin 
A605-57-004, Revision 04, dated November 12, 2014, including 
Appendices 1 and 2, dated September 26, 2013 (for serial numbers 
5701 through 5920 inclusive). Accomplishing the requirements of this 
paragraph terminates the requirements of this AD.

(l) Credit for Previous Actions

    (1) This paragraph provides credit for actions required by 
paragraphs (g), (h), and (i)(1) of this AD, if those actions were 
performed before the effective date of this AD using the applicable 
service information identified in paragraphs (l)(1)(i) and 
(l)(1)(ii) of this AD, which are not incorporated by reference in 
this AD.
    (i) Bombardier Alert Service Bulletin A604-57-006, Revision 03, 
dated August 19, 2014, including Appendices 1 and 2, dated September 
26, 2013.
    (ii) Bombardier Alert Service Bulletin A605-57-004, Revision 03, 
dated August 19, 2014, including Appendices 1 and 2, dated September 
26, 2013.
    (2) This paragraph provides credit for actions required by 
paragraph (k) of this AD, if those actions were done before the 
effective date of this AD using the applicable service information 
identified in paragraphs (l)(2)(i) through (l)(2)(iv) of this AD.
    (i) Bombardier Alert Service Bulletin A604-57-006, Revision 01, 
dated September 26, 2013, including Appendices 1 and 2, dated 
September 26, 2013, which is incorporated by reference in AD 2014-
03-17, Amendment 39-17754 (79 FR 9389, February 19, 2014).
    (ii) Bombardier Alert Service Bulletin A604-57-006, Revision 02, 
dated January 22, 2014, including Appendices 1 and 2, dated 
September 26, 2013, which is incorporated by reference in AD 2014-
17-51, Amendment 39-17999 (79 FR 64088, October 28, 2014).
    (iii) Bombardier Alert Service Bulletin A605-57-004, Revision 
01, dated September 26, 2013, including Appendices 1 and 2, dated 
September 26, 2013, which is incorporated by reference in AD 2014-
03-17, Amendment 39-17754 (79 FR 9389, February 19, 2014).
    (iv) Bombardier Alert Service Bulletin A604-57-004, Revision 02, 
dated January 22, 2014, including Appendices 1 and 2, dated 
September 26, 2013, which is incorporated by reference in AD 2014-
17-51, Amendment 39-17999 (79 FR 64088, October 28, 2014).

(m) 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 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.
    (i) 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.
    (ii) AMOCs previously approved for AD 2014-17-51, Amendment 39-
17999 (79 FR 64088, October 28, 2014), are acceptable for the 
corresponding requirements of this AD.
    (2) Contacting the Manufacturer: As of the effective date of 
this AD, for any requirement in this AD to obtain corrective actions 
from

[[Page 63145]]

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.

(n) Related Information

    (1) Refer to Mandatory Continuing Airworthiness Information 
(MCAI) Canadian Emergency Airworthiness Directive CF-2014-27R1, 
dated August 29, 2014, 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-2015-3988.
    (2) 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. 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 October 6, 2015.
Jeffrey E. Duven,
Manager, Transport Airplane Directorate, Aircraft Certification 
Service.
[FR Doc. 2015-26222 Filed 10-16-15; 8:45 am]
 BILLING CODE 4910-13-P