Document ID: FAA-2018-0794-0001
Agency: faa
Document Type: Proposed Rule
Title: Airworthiness Directives: Bombardier Inc. Airplanes
Posted Date: 2018-09-13T04:00Z

[Federal Register Volume 83, Number 178 (Thursday, September 13, 2018)]
[Proposed Rules]
[Pages 46428-46434]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2018-19735]

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

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2018-0794; Product Identifier 2017-NM-175-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) 2012-25-
02, which applies to certain Bombardier, Inc. Model CL-600-2B19 
(Regional Jet Series 100 & 440) airplanes. AD 2012-25-02 requires 
revising the airworthiness limitations section (AWL) of the 
instructions for continued airworthiness (ICA) of the maintenance 
requirements manual by incorporating new procedures for repetitive 
inspections for cracking of the rear pressure bulkhead (RPB). AD 2012-
25-02 also requires revising the maintenance program to incorporate a 
revised task which requires an improved non-destructive inspection 
procedure. Since we issued AD 2012-25-02, additional in-service crack 
findings resulted in the development of a structural modification to 
the RPB. This proposed AD would mandate modification of the RPB and 
would add repetitive inspections for cracking of the RPB web, which 
would terminate certain actions in this proposed AD. We are proposing 
this AD to address the unsafe condition on these products.

DATES: We must receive comments on this proposed AD by October 29, 
2018.

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 514-855-5000; 
fax 514-855-7401; email [email protected]; internet http://www.bombardier.com. 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.

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-2018-
0794; 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 NPRM, 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, 
Airframe and Mechanical Systems Section, FAA, New York ACO Branch, 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 proposal. Send your comments to an address listed 
under the ADDRESSES section. Include ``Docket No. FAA-2018-0794; 
Product Identifier 2017-NM-175-AD'' at the beginning of your comments. 
We specifically invite comments on the overall regulatory, economic, 
environmental, and energy

[[Page 46429]]

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

    We issued AD 2012-25-02, Amendment 39-17283 (77 FR 73902, December 
12, 2012) (``AD 2012-25-02''), for certain Bombardier, Inc. Model CL-
600-2B19 (Regional Jet Series 100 & 440) airplanes. AD 2012-25-02 
requires revising the AWL of the ICA of the Canadair Regional Jet 
Maintenance Requirements Manual by incorporating new procedures for 
repetitive detailed and special detailed inspections for cracking of 
the RPB. AD 2012-25-02 also requires revising the maintenance program 
to incorporate a revised task specified in a certain temporary 
revision, which requires an improved non-destructive inspection 
procedure; and adds airplanes to the applicability. AD 2012-25-02 
resulted from multiple reports of cracks on the forward face of the RPB 
web. We issued AD 2012-25-02 to detect and correct cracking in the RPB, 
which could result in reduced structural integrity and rapid 
decompression of the airplane.

Actions Since AD 2012-25-02 Was Issued

    Since we issued AD 2012-25-02, additional in-service crack findings 
resulted in the development of a structural modification to the RPB.
    Transport Canada Civil Aviation (TCCA), which is the aviation 
authority for Canada, has issued Canadian Airworthiness Directive CF-
2011-30R2, dated June 12, 2017 (referred to after this as the Mandatory 
Continuing Airworthiness Information, or ``the MCAI''), to correct an 
unsafe condition for certain Bombardier, Inc. Model CL-600-2B19 
(Regional Jet Series 100 & 440) airplanes. The MCAI states:

    Cracks on the forward face of the Rear Pressure Bulkhead (RPB) 
web have been discovered on three CL-600-2B19 aeroplanes in-service.
    A Temporary Revision has been made to Part 2 of the Maintenance 
Requirements Manual (MRM) to revise the existing AWL task by 
introducing an improved Non-Destructive Inspection (NDI) procedure 
to ensure that fatigue cracking of the RPB is detected and 
corrected.
    The original issue of this [TCCA] AD [which corresponds to FAA 
AD 2012-25-02] mandated the incorporation of a new NDI procedure for 
AWL task number 53-61-153.
    Additional in-service findings have resulted in the issue of 
revision 1 of this [TCCA] AD, which mandates a structural 
modification to the rear pressure bulkhead with revised threshold 
and repeat inspection intervals. This modification is intended to 
preclude the onset of multiple site fatigue damage for the remaining 
service life of the aeroplane. If not corrected, a failure of the 
RPB could result in loss of structural integrity of the aeroplane.
    Revision 2 of this [TCCA] AD requires an inspection to be 
carried out prior to modification of the RPB. This revision also 
requires an additional modification to be completed on the RPB prior 
to terminating AWL task number 53-61-153. It also includes 
provisions to account for certain repairs as well as [alternative 
methods of compliance] AMOCs issued to earlier revisions of this 
[TCCA] AD.

    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-2018-
0794.

Related Service Information Under 1 CFR Part 51

    Bombardier, Inc., has issued the following service information.
     Bombardier Repair Engineering Order (REO) 601R-53-61-1230, 
Revision F, dated November 7, 2011. This service information describes 
procedures for a repair to the pressure bulkhead web frame station (FS) 
621.00, lintel installation.
     Bombardier REO 601R-53-61-1240, Revision D, dated October 
31, 2016. This service information describes procedures for a repair 
and modification to FS 621.00 pressure bulkhead web.
     Bombardier REO 601R-53-61-5828, Revision A, dated March 
16, 2017. This service information describes procedures for a repair to 
FS 621.00 pressure bulkhead web at left buttock line (LBL) 27.5.
    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.
    This AD requires revisions to certain operator maintenance 
documents to include new actions (e.g., inspections). Compliance with 
these actions is required by 14 CFR 91.403(c). For airplanes that have 
been previously modified, altered, or repaired in the areas addressed 
by this proposed AD, the operator may not be able to accomplish the 
actions described in the revisions. In this situation, to comply with 
14 CFR 91.403(c), the operator must request approval for an alternative 
method of compliance according to paragraph (p)(1) of this proposed AD. 
The request should include a description of changes to the required 
actions that will ensure the continued damage tolerance of the affected 
structure.

Differences Between This Proposed AD and the Service Information

    The MCAI includes the following statement: ``If it is not possible 
to complete all of the instructions in the SBs [service bulletins] . . 
. due to the configuration of the aircraft, contact Bombardier Inc. for 
approved instructions.'' This issue is addressed in 14 CFR 39.17, which 
states that ``If a change in a product affects your ability to 
accomplish the actions required by the AD in any way, you must request 
FAA approval of an alternative method of compliance . . .'' Since we do 
not currently have the authority to delegate AMOC approvals to foreign 
civil aviation authorities, the FAA is responsible for these approvals.

Costs of Compliance

    We estimate that this proposed AD affects 457 airplanes of U.S. 
registry. We estimate the following costs to comply with this proposed 
AD:

[[Page 46430]]

                                      Estimated Costs for Required Actions
----------------------------------------------------------------------------------------------------------------
              Labor cost                      Parts cost            Cost per product      Cost on U.S. operators
----------------------------------------------------------------------------------------------------------------
Up to 917 work-hours x $85 per hour =  Up to $6,000...........  Up to $83,945..........  Up to $38,362,865.
 Up to $77,945.
----------------------------------------------------------------------------------------------------------------

    We have determined that revising the maintenance or inspection 
program takes an average of 90 work-hours per operator, although we 
recognize that this number may vary from operator to operator. In the 
past, we have estimated that this action takes 1 work-hour per 
airplane. Since operators incorporate maintenance or inspection program 
changes for their affected fleet(s), we have determined that a per-
operator estimate is more accurate than a per-airplane estimate. 
Therefore, we estimate the total cost per operator to be $7,650 (90 
work-hours x $85 per work-hour).
    We have received no definitive data that would enable us to provide 
cost estimates for the on-condition actions specified in this proposed 
AD.

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 proposed 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 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) 
2012-25-02, Amendment 39-17283 (77 FR 73902, December 12, 2012), and 
adding the following new AD:

Bombardier Inc.: Docket No. FAA-2018-0794; Product Identifier 2017-
NM-175-AD.

(a) Comments Due Date

    We must receive comments by October 29, 2018.

 (b) Affected ADs

    This AD replaces AD 2012-25-02, Amendment 39-17283 (77 FR 73902, 
December 12, 2012) (``AD 2012-25-02'').

 (c) Applicability

    This AD applies to Bombardier, Inc. Model CL-600-2B19 (Regional 
Jet Series 100 & 440) airplanes, certificated in any category, 
serial numbers 7002 through 8025 inclusive, 8030, and 8034.

 (d) Subject

    Air Transport Association (ATA) of America Code 53, Fuselage.

 (e) Reason

    This AD was prompted by multiple reports of cracks on the 
forward face of the rear pressure bulkhead (RPB) web, and additional 
in-service crack findings which resulted in the development of a 
structural modification to the RPB. We are issuing this AD to 
address cracking in the RPB, which could result in reduced 
structural integrity and rapid decompression of the airplane.

 (f) Compliance

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

 (g) Retained Revision of the Maintenance Program With New Terminating 
Action

    This paragraph restates the requirements of paragraph (i) of AD 
2012-25-02, with a new terminating action. Except for the airplane 
having serial number 7002, within 60 days after January 16, 2013 
(the effective date of AD 2012-25-02): Revise the maintenance 
program by incorporating the revised inspection requirements 
specified in airworthiness limitation section (AWL) 53-61-153 of 
Bombardier temporary revision (TR) 2B-2187, dated June 22, 2011, to 
Appendix B-Airworthiness Limitations, of Part 2 of the Bombardier 
CL-600-2B19 Maintenance Requirements Manual (MRM). The initial 
compliance times for the task are at the applicable time specified 
in paragraph (g)(1) or (g)(2) of this AD. Doing the actions required 
by paragraph (j) or (l) of this AD terminates the requirements of 
this paragraph, for the repaired area only. Accomplishment of the 
actions required by paragraph (m) of this AD terminates the 
requirements of this paragraph.
    (1) For airplanes on which the special detailed inspection 
specified in AWL 53-61-153 of Bombardier TR 2B-2187, dated June 22, 
2011; or Canadair Regional Jet TR 2B-2109, dated October 13, 2005; 
has not been done as of January 16, 2013 (the effective date of AD 
2012-25-02): The initial compliance time for AWL 53-61-153 is at the 
applicable time specified in paragraph (g)(1)(i) or (g)(1)(ii) of 
this AD.
    (i) For airplanes that have accumulated 10,500 total flight 
cycles or less as of January 16, 2013: Before the accumulation of 
12,000 total flight cycles.
    (ii) For airplanes that have accumulated more than 10,500 total 
flight cycles as of January 16, 2013: Within 1,500 flight cycles 
after January 16, 2013 (the effective date of AD 2012-25-02).
    (2) For airplanes on which the special detailed inspection 
specified in AWL 53-61-

[[Page 46431]]

153 of Bombardier TR 2B-2187, dated June 22, 2011; or Canadair 
Regional Jet TR 2B-2109, dated October 13, 2005; has been done as of 
January 16, 2013 (the effective date of AD 2012-25-02): The initial 
compliance time for AWL 53-61-153 is within 4,360 flight cycles 
after accomplishing the most recent special detailed inspection, or 
within 1,500 flight cycles after accomplishing the most recent 
detailed inspection as specified in AWL 53-61-153 of Canadair 
Regional Jet TR 2B-2109, dated October 13, 2005, whichever occurs 
later.

 (h) Retained No Alternative Actions or Intervals With New Exception

    This paragraph restates the requirements of paragraph (j) of AD 
2012-25-02, with a new exception. Except as required by paragraphs 
(j)(3), (l)(2), and (m) of this AD, after accomplishing the 
revisions required by paragraph (g) of this AD, no alternative 
actions (e.g., inspections) or intervals may be used other than 
those specified in Bombardier TR 2B-2187, dated June 22, 2011, to 
Appendix B-Airworthiness Limitations, of Part 2 of the Bombardier 
CL-600-2B19 MRM, unless the actions and intervals are approved as an 
alternative method of compliance (AMOC) in accordance with the 
procedures specified in paragraph (p)(1) of this AD.

 (i) Retained General Revision of the MRM With No Changes

    This paragraph restates the requirements of paragraph (k) of AD 
2012-25-02, with no changes. The maintenance program revision 
required by paragraph (g) of this AD may be done by inserting a copy 
of Bombardier TR 2B-2187, dated June 22, 2011, into Appendix B-
Airworthiness Limitations, of Part 2 of the Bombardier CL-600-2B19 
MRM. When this TR has been included in general revisions of the MRM, 
the general revisions may be inserted in the MRM, provided the 
relevant information in the general revision is identical to that in 
this TR.

 (j) New Requirements of This AD: Inspections, Modification, and 
Maintenance or Inspection Program Revision

    Accomplish the actions required by paragraphs (j)(1), (j)(2), 
and (j)(3) of this AD at the time specified, except as provided by 
paragraphs (l) and (m) of this AD.
    (1) At the applicable time specified in figure 1 to paragraph 
(j) of this AD: Do a nondestructive inspection for cracking of the 
forward face of the fuselage station (FS) 621 pressure bulkhead, in 
accordance with AWL 53-61-153 of Bombardier TR 2B-2187, dated June 
22, 2011, to Appendix B-Airworthiness Limitations, of Part 2 of the 
Bombardier CL-600-2B19 MRM.
    (2) At the applicable time specified in figure 1 to paragraph 
(j) of this AD: Modify the RPB and do a nondestructive inspection 
for cracking of the FS 621 pressure bulkhead web, in accordance with 
Bombardier Repair Engineering Order (REO) 601R-53-61-1240, Revision 
D, dated October 31, 2016.
    (3) Before further flight after accomplishing the modification 
required by paragraph (j)(2) of this AD: Revise the maintenance or 
inspection program, as applicable, by incorporating the inspection 
requirements at the threshold and repetitive inspection times 
specified in the in-service deviation inspection requirements (SDIR) 
of Bombardier REO 601R-53-61-1240, Revision D, dated October 31, 
2016.
[GRAPHIC] [TIFF OMITTED] TP13SE18.000

 (k) Corrective Action

    (1) If any crack is found during any inspection required by 
paragraph (j)(2), (l)(1), or (m) of this AD: Before further flight, 
repair using a method approved by the Manager, New York ACO Branch, 
FAA; 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.
    (2) If any crack is found during any inspection required by 
paragraph (j)(1) of this AD: Before further flight, repair in 
accordance with Bombardier REO 601R-53-61-1230, Revision F, dated 
November 7, 2011, or Bombardier REO 601R-53-61-1240, Revision D, 
dated October 31, 2016, as applicable, or using a method approved by 
the Manager, New York ACO Branch, FAA; TCCA; or Bombardier, Inc.'s 
TCCA DAO. If approved by the DAO, the approval must include the DAO-
authorized signature.

 (l) Alternative Actions for Certain Airplanes

    For airplanes on which the actions required by paragraphs (j)(1) 
and (j)(2) of this AD were performed before the effective date of 
this AD using the REOs identified in figure 2 to paragraph (l) of 
this AD: In lieu of accomplishing the actions required by paragraph 
(j) of this AD, accomplish the actions required by paragraphs (l)(1) 
and (l)(2) of this AD within 6,000 flight cycles after the effective 
date of this AD.
    (1) Perform a special detailed inspection for cracking of Zone B 
of the RPB web, in accordance with Part B of Bombardier REO 601R-53-
61-1240, Revision D, dated October 31, 2016.
    (2) Revise the maintenance or inspection program, as applicable, 
by incorporating the inspection requirements at the threshold and 
repetitive inspection times specified in Part B of the SDIR of 
Bombardier REO 601R-53-61-1240, Revision D, dated October 31, 2016. 
The inspection threshold is measured from the time of incorporation 
of the applicable REO specified in figure 2 to paragraph (l) of this 
AD.
 BILLING CODE 4910-13-P

[[Page 46432]]

[GRAPHIC] [TIFF OMITTED] TP13SE18.001

[[Page 46433]]

[GRAPHIC] [TIFF OMITTED] TP13SE18.002

 BILLING CODE 4910-13-C

 (m) Alternative Actions for Airplane Serial Number 7610

    For any airplane having serial number 7610: In lieu of 
accomplishing the actions required by paragraph (j) of this AD; 
within 6,000 flight cycles after the effective date of this AD, do a 
reinforcement of K601R36010--A at left buttock line (LBL) 27.5 and 
perform a special detailed inspection for cracking of the FS 621 
pressure bulkhead web at LBL 27.5, in accordance with Bombardier REO 
601R-53-61-5828, Revision A, dated March 16, 2017. Before further 
flight after accomplishing the reinforcement, or within 60 days 
after the effective date of this AD, whichever occurs later: Revise 
the maintenance or inspection program, as applicable, by 
incorporating the inspection requirements that include threshold and 
repetitive inspection times as specified in the SDIR of Bombardier 
REO 601R-53-61-5828, Revision A, dated March 16, 2017.

 (n) No Alternative Actions or Intervals

    After the maintenance or inspection program has been revised as 
required by paragraph (j)(3), (l)(2), or (m) of this AD, no 
alternative actions (e.g., inspections) or intervals may be used 
unless the actions or intervals are approved as an AMOC in 
accordance with the procedures specified in paragraph (p)(1) of this 
AD.

 (o) Terminating Actions for Paragraph (g) of This AD

    (1) Accomplishment of the actions required by paragraph (j) or 
(l) of this AD terminates the requirements of paragraph (g) of this 
AD, for the repaired area only.
    (2) Accomplishment of the actions required by paragraph (m) of 
this AD terminates the requirements of paragraph (g) of this AD.
    (3) For airplanes on which the actions required by paragraph (j) 
or (l) of this AD have been done and on which the modification and 
inspection specified in REO 601R-53-61-1230 Revision F, dated 
November 7, 2011, have been done and there were no inspection 
findings: The actions required by paragraph (g) of this AD are 
terminated.

 (p) Other FAA AD Provisions

    (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

[[Page 46434]]

request to your principal inspector or local Flight Standards 
District Office, as appropriate. If sending information directly to 
the manager of the certification office, send it to ATTN: Program 
Manager, Continuing Operational Safety, FAA, New York ACO Branch, 
1600 Stewart Avenue, Suite 410, Westbury, New York 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.
    (ii) AMOCs approved previously for AD 2012-25-02, are approved 
as AMOCs for the corresponding provisions in paragraphs (g), (k), 
and (l) of 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 
Branch, FAA; or TCCA; or Bombardier Inc.'s TCCA DAO. If approved by 
the DAO, the approval must include the DAO-authorized signature.

 (q) Related Information

    (1) Refer to Mandatory Continuing Airworthiness Information 
(MCAI) Canadian Airworthiness Directive CF-2011-30R2, dated June 12, 
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-2018-0794.
    (2) For more information about this AD, contact Aziz Ahmed, 
Aerospace Engineer, Airframe and Mechanical Systems Section, FAA, 
New York ACO Branch, 1600 Stewart Avenue, Suite 410, Westbury, NY 
11590; telephone 516-228-7329; 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 514-855-5000; fax 514-855-7401; 
email [email protected]; internet http://www.bombardier.com; internet http://www.bombardier.com. 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.

    Issued in Des Moines, Washington, on August 24, 2018.
James Cashdollar,
Acting Director, System Oversight Division, Aircraft Certification 
Service.
[FR Doc. 2018-19735 Filed 9-12-18; 8:45 am]
 BILLING CODE 4910-13-P