82 FR 47094 - Airworthiness Directives; Bombardier, Inc., Airplanes

DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration

Federal Register Volume 82, Issue 195 (October 11, 2017)

We are adopting a new airworthiness directive (AD) for certain Bombardier, Inc., Model CL-600-1A11 (CL-600), CL-600-2A12 (CL-601 Variant), and CL-600-2B16 (CL-601-3A and CL-601-3R Variants) airplanes. This AD was prompted by a report of laminated shims that may have been improperly installed at a certain wing tie beam. This AD requires revising the maintenance or inspection program to incorporate certification maintenance requirement tasks that introduce revised checks of the tie beam. We are issuing this AD to address the unsafe condition on these products.

[Federal Register Volume 82, Number 195 (Wednesday, October 11, 2017)]
[Rules and Regulations]
[Pages 47094-47096]
From the Federal Register Online  [www.thefederalregister.org]
[FR Doc No: 2017-21374]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2017-0691; Product Identifier 2017-NM-029-AD; Amendment 
39-19068; AD 2017-20-11]
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-600-1A11 (CL-600), CL-600-2A12 (CL-601 
Variant), and CL-600-2B16 (CL-601-3A and CL-601-3R Variants) airplanes. 
This AD was prompted by a report of laminated shims that may have been 
improperly installed at a certain wing tie beam. This AD requires 
revising the maintenance or inspection program to incorporate 
certification maintenance requirement tasks that introduce revised 
checks of the tie beam. We are issuing this AD to address the unsafe 
condition on these products.

DATES: This AD is effective November 15, 2017.
    The Director of the Federal Register approved the incorporation by 
reference of certain publications listed in this AD as of November 15, 
2017.

ADDRESSES: For service information identified in this final rule, 
contact Bombardier, Inc., 400 C[ocirc]te-Vertu Road West, Dorval, 
Qu[eacute]bec H4S 1Y9, Canada; Widebody Customer Response Center North 
America toll-free telephone 1-866-538-1247 or direct-dial telephone 1-
514-855-2999; fax 514-855-7401; email [email protected]; 
Internet http://www.bombardier.com. You may view this referenced 
service information at the FAA, Transport Standards Branch, 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-2017-0691.

Examining the AD Docket

    You may examine the AD docket on the Internet at http://www.regulations.gov by searching for and locating Docket No. FAA-2017-
0691; 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 Office (telephone 
800-647-5527) is 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 20590.

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: 

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-600-1A11 (CL-600), CL-600-2A12 (CL-601 Variant), and CL-600-
2B16 (CL-601-3A and CL-601-3R Variants) airplanes. The NPRM published 
in the Federal Register on July 17, 2017 (82 FR 32652) (``the NPRM''). 
The NPRM was prompted by a report of laminated shims that may have been 
improperly installed at a certain wing tie beam. The NPRM proposed to 
require revising the maintenance or inspection program to incorporate 
certification maintenance requirement tasks that introduce revised 
checks of the tie beam. We are issuing this AD to detect and correct 
degradation of the structural integrity of the affected tie beam, which 
could result in cracking of the pressure floor.
    Transport Canada Civil Aviation (TCCA), which is the aviation 
authority for Canada, has issued Canadian Airworthiness Directive CF-
2016-34, dated October 14, 2016 (referred to after

[[Page 47095]]

this as the Mandatory Continuing Airworthiness Information, or ``the 
MCAI''), to correct an unsafe condition for certain Bombardier, Inc., 
Model CL-600-1A11 (CL-600), CL-600-2A12 (CL-601 Variant), and CL-600-
2B16 (CL-601-3A and CL-601-3R Variants) airplanes. The MCAI states:

    Bombardier has determined that laminated shims may have been 
improperly installed at the floor/wing tie beam bumper pads. 
Improperly installed shims may become damaged, which could result in 
a gapping condition. This would lead to increased stress and 
degradation of structural integrity of the tie beam. Undetected 
failure may lead to premature cracking of the pressure floor.
    Bombardier has introduced revised maintenance tasks through 
revisions of the applicable CL-600 Time Limits Maintenance Checks 
(TLMCs) to confirm structural integrity of the affected tie beam.
    This [Canadian] AD is issued to mandate the incorporation of the 
applicable revised TLMC tasks.

You may examine the MCAI in the AD docket on the Internet at http://www.regulations.gov by searching for and locating Docket No. FAA-2017-
0691.
    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 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 (i)(1) of this AD. The request 
should include a description of changes to the required actions that 
will ensure the continued operational safety of the airplane.

Comments

    We gave the public the opportunity to participate in developing 
this AD. We received no comments on the NPRM or on the determination of 
the cost to the public.

Conclusion

    We reviewed the relevant data and determined that air safety and 
the public interest require adopting this AD as proposed except for 
minor editorial changes. We have determined that these minor changes:
     Are consistent with the intent that was proposed in the 
NPRM for correcting the unsafe condition; and
     Do not add any additional burden upon the public than was 
already proposed in the NPRM.

Related Service Information Under 1 CFR Part 51

    Bombardier, Inc., has issued the following service information.
     Task 53-10-00-131, ``Pressure Floor--Wing Tie Beam--
FS460.00,'' of Section 5-10-30, ``Airworthiness Limitation Checks by 
ATA Chapter Number,'' of Bombardier Challenger 600 Time Limits/
Maintenance Checks, Publication No. PSP 605, Revision 37, dated April 
29, 2016.
     Task 53-10-00-133, ``Pressure Floor--Wing Tie Beam--
FS460.00,'' of Section 5-10-30, ``Airworthiness Limitation Checks by 
ATA Chapter Number,'' of Bombardier Challenger 601 Time Limits/
Maintenance Checks, Publication No. PSP 601-5, Revision 44, dated April 
29, 2016.
     Task 53-10-00-134, ``Pressure Floor--Wing Tie Beam--
FS460.00,'' of Section 5-10-30, ``Airworthiness Limitation Checks by 
ATA Chapter Number,'' of Bombardier Challenger 601 Time Limits/
Maintenance Checks, Publication No. PSP 601A-5, Revision 40, dated 
April 29, 2016.
    This service information identifies airworthiness limitation tasks 
for checks of the pressure floor at a certain wing tie beam. These 
documents are distinct since they apply to different airplane models. 
This service information is reasonably available because the interested 
parties have access to it through their normal course of business or by 
the means identified in the ADDRESSES section.

Costs of Compliance

    We estimate that this AD affects 137 airplanes of U.S. registry.
    We estimate the following costs to comply with this AD:

                                                 Estimated Costs
----------------------------------------------------------------------------------------------------------------
                                                                                     Cost per      Cost on U.S.
               Action                         Labor cost            Parts cost        product        operators
----------------------------------------------------------------------------------------------------------------
Maintenance or inspection program    1 work-hour x $85 per hour               $0             $85         $11,645
 revision.                            = $85.
----------------------------------------------------------------------------------------------------------------

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 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 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.

[[Page 47096]]

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):

2017-20-11 Bombardier, Inc.: Amendment 39-19068; Docket No. FAA-
2017-0691; Product Identifier 2017-NM-029-AD.

(a) Effective Date

    This AD is effective November 15, 2017.

(b) Affected ADs

    None.

(c) Applicability

    This AD applies to Bombardier, Inc., Model CL-600-1A11 (CL-600) 
airplanes, serial numbers 1004 through 1085 inclusive; Model CL-600-
2A12 airplanes (CL-601 Variant), serial numbers 3001 through 3066 
inclusive; and Model CL-600-2B16 (CL-601-3A and CL-601-3R Variants) 
airplanes, serial numbers 5001 through 5194 inclusive; certificated 
in any category.

(d) Subject

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

(e) Reason

    This AD was prompted by a report of laminated shims that may 
have been improperly installed at a certain wing tie beam. We are 
issuing this AD to detect and correct degradation of the structural 
integrity of the affected tie beam, which could result in cracking 
of the pressure floor.

(f) Compliance

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

(g) Maintenance or Inspection Program Revision

    Within 30 days after the effective date of this AD, revise the 
maintenance or inspection program, as applicable, to incorporate the 
certification maintenance requirement (CMR) task specified in the 
applicable service information identified in paragraphs (g)(1) 
through (g)(3) of this AD. The initial compliance time for the task 
is within the applicable time specified in the service information, 
or within 30 days after the effective date of this AD, whichever 
occurs later.
    (1) For Model CL-600-1A11 (CL-600) airplanes: Task 53-10-00-131, 
``Pressure Floor--Wing Tie Beam--FS460.00,'' of Section 5-10-30, 
``Airworthiness Limitation Checks by ATA Chapter Number,'' of 
Bombardier Challenger 600 Time Limits/Maintenance Checks, 
Publication No. PSP 605, Revision 37, dated April 29, 2016.
    (2) For Model CL-600-2A12 airplanes (CL-601 Variant) airplanes: 
Task 53-10-00-133, ``Pressure Floor--Wing Tie Beam--FS460.00,'' of 
Section 5-10-30, ``Airworthiness Limitation Checks by ATA Chapter 
Number,'' of Bombardier Challenger 601 Time Limits/Maintenance 
Checks, Publication No. PSP 601-5, Revision 44, dated April 29, 
2016.
    (3) For Model CL-600-2B16 (CL-601-3A and CL-601-3R Variants) 
airplanes: Task 53-10-00-134, ``Pressure Floor--Wing Tie Beam--
FS460.00,'' of Section 5-10-30, ``Airworthiness Limitation Checks by 
ATA Chapter Number,'' of Bombardier Challenger 601 Time Limits/
Maintenance Checks, Publication No. PSP 601A-5, Revision 40, dated 
April 29, 2016.

(h) No Alternative Actions or Intervals

    After the maintenance or inspection program has been revised as 
required by paragraph (g) of this AD, no alternative actions (e.g., 
inspections) or intervals may be used unless the actions or 
intervals are approved as an alternative method of compliance (AMOC) 
in accordance with the procedures specified in paragraph (i)(1) of 
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 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 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, NY 11590; telephone 516-228-7300; fax 516-794-5531. Before 
using any approved AMOC, notify your appropriate principal 
inspector, or lacking a principal inspector, the manager of the 
local flight standards district office/certificate holding district 
office.
    (2) Contacting the Manufacturer: For any requirement in this AD 
to obtain corrective actions from a manufacturer, the action must be 
accomplished using a method approved by the Manager, New York ACO 
Branch, 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.

(j) Related Information

    (1) Refer to Mandatory Continuing Airworthiness Information 
(MCAI) Canadian Airworthiness Directive CF-2016-34, dated October 
14, 2016, for related information. This MCAI may be found in the AD 
docket on the Internet at http://www.regulations.gov by searching 
for and locating Docket No. FAA-2017-0691.
    (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.

(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) Task 53-10-00-131, ``Pressure Floor--Wing Tie Beam--
FS460.00,'' of Section 5-10-30, ``Airworthiness Limitation Checks by 
ATA Chapter Number,'' of Bombardier Challenger 600 Time Limits/
Maintenance Checks, Publication No. PSP 605, Revision 37, dated 
April 29, 2016. The revision level of this document is identified on 
only the Transmittal Letter.
    (ii) Task 53-10-00-133, ``Pressure Floor--Wing Tie Beam--
FS460.00,'' of Section 5-10-30, ``Airworthiness Limitation Checks by 
ATA Chapter Number,'' of Bombardier Challenger 601 Time Limits/
Maintenance Checks, Publication No. PSP 601-5, Revision 44, dated 
April 29, 2016. The revision level of this document is identified on 
only the Transmittal Letter.
    (iii) Task 53-10-00-134, ``Pressure Floor--Wing Tie Beam--
FS460.00,'' of Section 5-10-30, ``Airworthiness Limitation Checks by 
ATA Chapter Number,'' of Bombardier Challenger 601 Time Limits/
Maintenance Checks, Publication No. PSP 601A-5, Revision 40, dated 
April 29, 2016. The revision level of this document is identified on 
only the Transmittal Letter.
    (3) For service information identified in this AD, contact 
Bombardier, Inc., 400 C[ocirc]te-Vertu Road West, Dorval, 
Qu[eacute]bec H4S 1Y9, Canada; Widebody Customer Response Center 
North America toll-free telephone 1-866-538-1247 or direct-dial 
telephone 1-514-855-2999; fax 514-855-7401; email 
[email protected]; Internet http://www.bombardier.com.
    (4) You may view this service information at the FAA, Transport 
Standards Branch, 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 September 27, 2017.
Dionne Palermo,
Acting Director, System Oversight Division, Aircraft Certification 
Service.
[FR Doc. 2017-21374 Filed 10-10-17; 8:45 am]
 BILLING CODE 4910-13-P