```

[Federal Register Volume 78, Number 250 (Monday, December 30, 2013)]
[Proposed Rules]
[Pages 79329-79333]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: 2013-31185]

[[Page 79329]]

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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2013-1065; Directorate Identifier 2011-NM-230-AD]
RIN 2120-AA64

Airworthiness Directives; Bombardier, Inc. Airplanes

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Notice of proposed rulemaking (NPRM).

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SUMMARY: We propose to supersede an existing airworthiness directive 
(AD) that applies to certain Bombardier, Inc. Model CL-600-1A11 (CL-
600), CL-600-2A12 (CL-601), and CL-600-2B16 (CL-601-3A, CL-601-3R, and 
CL-604 Variants) airplanes. The existing AD currently requires 
operators to assign serial numbers or part numbers to certain landing 
gear parts; and to establish the number of landings on the parts, if 
necessary. The existing AD also requires operators to revise the 
Airworthiness Limitations Section (ALS) of the Instructions for 
Continued Airworthiness (ICA) to reflect the new life limits of the 
landing gear parts. Since we issued that AD, additional landing gear 
parts have been identified that need serialization. This proposed AD 
would add airplanes to the applicability; require operators to assign 
serial numbers or part numbers to certain additional landing gear 
parts, to establish the number of landings on the parts, if necessary; 
and record in all required airplane technical records and manuals the 
new part numbers, serial numbers, and landings assigned to these parts. 
We are proposing this AD to prevent life-limited landing gear parts 
from being used beyond their safe-life limits, which could lead to 
collapse of the landing gear.

DATES: We must receive comments on this proposed AD by February 13, 
2014.

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.
    For Bombardier, Inc./Canadair 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. For Messier-Dowty service information identified in 
this proposed AD, contact Messier Services Americas, Customer Support 
Center, 45360 Severn Way, Sterling, VA 20166-8910; phone: 703-450-8233; 
fax: 703-404-1621; Internet: https://techpubs.services/messier-dowty.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; or in person at the Docket Operations office 
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: Andreas Rambalakos, Aerospace 
Engineer, Airframe and Mechanical Systems Branch, ANE-171, FAA, New 
York Aircraft Certification Office, 1600 Stewart Avenue, Suite 410, 
Westbury, NY 11590; telephone (516) 228-7345; 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-2013-1065; 
Directorate Identifier 2011-NM-230-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 July 11, 2005, we issued AD 2005-15-04, Amendment 39-14193 (70 
FR 43032, July 26, 2005). That AD required actions intended to address 
an unsafe condition on the products listed above.
    Since we issued AD 2005-15-04, Amendment 39-14193 (70 FR 43032, 
July 26, 2005), Transport Canada Civil Aviation (TCCA), which is the 
airworthiness authority for Canada, has issued Canadian Airworthiness 
Directives CF-2003-18R2, dated September 28, 2011; CF-2003-20R1, dated 
September 28, 2011; and CF-2003-21R2, dated September 28, 2011; 
(referred to after this as the Mandatory Continuing Airworthiness 
Information, or ``the MCAI'') to correct an unsafe condition for the 
specified products. The MCAI states:

    Certain landing gear parts that are listed in the aeroplane 
model Airworthiness Limitations Section, as safe life items with 
structural life limits, could be rotable and may not have been 
serialized, making tracking difficult. This [Canadian airworthiness] 
directive mandates that such parts be serialized. This [Canadian 
airworthiness] directive also provides the procedure to determine 
the number of landings for those parts where the service history 
cannot be established.
* * * * *
    [T]his [Canadian Airworthiness] directive * * * mandate[s] 
serialization of * * * additional landing gear parts.

    This proposed AD would also add airplanes to the applicability. The 
unsafe condition is using life-limited landing gear parts beyond their 
safe-life limits, which could lead to collapse of the landing gear. You 
may examine the MCAI in the AD docket on the Internet at http://www.regulations.gov by searching for and locating it in Docket No. FAA-
2013-1065.

Relevant Service Information

    Bombardier, Inc. has issued the following service bulletins.
     Bombardier Service Bulletin 600-0710, Revision 03, dated 
May 9, 2011, including Appendix 1, dated May 9, 2011, and Service 
Bulletin Information Sheet, dated July 6, 2010 (for Model CL-600-1A11 
(CL-600) airplanes).
     Bombardier Service Bulletin 601-0546, Revision 03, dated 
May 9, 2011, including Appendix 1, dated May 9, 2011, and Service 
Bulletin Information Sheet, dated July 6, 2010 (for Model CL-600-2A12 
(CL-601) airplanes and Model CL-600-2B16 (CL-601-3A and CL-601-3R 
Variants) airplanes).

[[Page 79330]]

     Bombardier Service Bulletin 604-32-014, Revision 02, dated 
May 9, 2011, including Appendix 1, dated May 9, 2011, and Service 
Bulletin Information Sheet, dated July 6, 2010 (for Model CL-600-2B16 
(CL-604 Variant) airplanes).
    The actions described in this service information are intended to 
correct the unsafe condition identified in the MCAI.

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.

Differences Between This Proposed AD and the MCAI or Service 
Information

    For Model CL-600-2B16 (CL-604 Variant) airplanes, the MCAI 
specifies serial numbers 5301 through 5595 inclusive; however, the 
actions of the MCAI address only serial numbers 5301 through 5573 
inclusive, 5579, and 5595. Consequently, we have specified the proposed 
applicability as serial numbers 5301 to 5573 inclusive, 5579, and 5595. 
We have coordinated this difference with TCCA.

Costs of Compliance

    Based on the service information, we estimate that this proposed AD 
would affect about 419 products of U.S. registry.
    The actions that are required by AD 2005-15-04, Amendment 39-14193 
(70 FR 43032, July 26, 2005), and retained in this proposed AD take up 
to 13 work-hours per product, at an average labor rate of $85 per work 
hour. Based on these figures, the estimated cost of the currently 
required actions is $1,105 per product.
    We estimate that it would take about 9 work-hours per product to 
comply with the new basic requirements of this proposed AD. The average 
labor rate is $85 per work-hour. Based on these figures, we estimate 
the cost of the proposed AD on U.S. operators to be $320,535, or $765 
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 proposed 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.
    We prepared a regulatory evaluation of the estimated costs to 
comply with this proposed AD and placed it in the AD docket.

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) 
2005-15-04, Amendment 39-14193 (70 FR 43032, July 26, 2005), and adding 
the following new AD:

Bombardier, Inc.: Docket No. FAA-2013-1065; Directorate Identifier 
2011-NM-230-AD.

(a) Comments Due Date

    We must receive comments by February 13, 2014.

(b) Affected ADs

    This AD supersedes AD 2005-15-04, Amendment 39-14193 (70 FR 
43032, July 26, 2005).

(c) Applicability

    This AD applies to Bombardier, Inc. airplanes, certificated in 
any category, as identified in paragraphs (c)(1) through (c)(4) of 
this AD.
    (1) Model CL-600-1A11 (CL-600) airplanes, serial numbers 1004 
through 1085 inclusive.
    (2) Model CL-600-2A12 (CL-601) airplanes, serial numbers 3001 
through 3066 inclusive;
    (3) Model CL-600-2B16 (CL-601-3A and CL-601-3R Variants) 
airplanes, serial numbers 5001 through 5194 inclusive.
    (4) Model CL-600-2B16 (CL-604 Variant) airplanes, serial numbers 
5301 through 5573 inclusive, 5579, and 5595.
    (5) 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 (r) of this AD. The request should include a 
description of changes to the required actions that will ensure the 
continued damage tolerance of the affected structure.

(d) Subject

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

(e) Reason

    This AD was prompted by reports that landing gear parts that 
have safe-life limits but do not have serial numbers or part numbers 
can be removed from one landing gear and re-installed on another, 
making tracking difficult. We are issuing this AD to prevent life-
limited landing gear parts from being used beyond their safe-life 
limits, which could lead to collapse of the landing gear.

(f) Compliance

    You are responsible for having the actions required by this AD 
performed within the compliance times specified, unless the actions 
have already been done.

[[Page 79331]]

(g) Retained Requirement To Add Serial Numbers (S/Ns) or Part Numbers 
(P/Ns)

    This paragraph restates the actions required by paragraph (f) of 
AD 2005-15-04, Amendment 39-14193 (70 FR 43032, July 26, 2005), with 
revised affected airplanes. Except for Model CL-600-2B16 airplanes 
having serial numbers 5514 through 5595 inclusive: At the applicable 
compliance time specified in paragraph (g)(1), (g)(2), or (g)(3) of 
this AD, add serial numbers and part numbers, as applicable, to the 
parts identified in the applicable service bulletin specified in 
paragraph (g)(1), (g)(2), or (g)(3) of this AD. Do all actions in 
accordance with the applicable service bulletin specified in 
paragraph (g)(1), (g)(2), or (g)(3) of this AD.
    (1) For parts identified in Bombardier Service Bulletin 600-
0710, Revision 01, dated December 15, 2003; and Bombardier Service 
Bulletin 601-0546, Revision 01, dated December 15, 2003; as having a 
compliance time of ``five years for the parts listed in Part A'': 
Within 60 months after August 30, 2005 (the effective date of AD 
2005-15-04, Amendment 39-14193 (70 FR 43032, July 26, 2005)).
    (2) For parts identified in Bombardier Service Bulletin 600-
0710, Revision 01, dated December 15, 2003; and Bombardier Service 
Bulletin 601-0546, Revision 01, dated December 15, 2003; as having a 
compliance time of ``ten years for the parts listed in Part B'': 
Within 120 months after August 30, 2005 (the effective date of AD 
2005-15-04, Amendment 39-14193 (70 FR 43032, July 26, 2005)).
    (3) For parts identified in Bombardier Service Bulletin 604-32-
014, dated May 31, 2002, as having a compliance time of ``no later 
than a calendar time of 8 years'': Within 96 months after August 30, 
2005 (the effective date of AD 2005-15-04, Amendment 39-14193 (70 FR 
43032, July 26, 2005)).
    Note 1 to paragraph (g) of this AD: The Bombardier service 
bulletins refer to the Messier-Dowty service bulletins in table 1 to 
paragraph (g) of this AD as additional sources of service 
information for adding part numbers or serial numbers by vibro-
peening the numbers on main landing gear (MLG) and nose landing gear 
(NLG) components that do not have them; and for determining the 
number of landings for parts without a part number or serial number 
on which the time since new (TSN) and cycles since new (CSN) have 
not been tracked.

                      Table 1 to Paragraph (g) of This AD--Messier-Dowty Service Bulletins
----------------------------------------------------------------------------------------------------------------
                                                           Landing gear       Corresponding Bombardier Service
 Messier-Dowty Service Bulletin          Model              component                    Bulletin(s)
----------------------------------------------------------------------------------------------------------------
M-DT SB104467009/010-32-1, dated  CL-600-1A11 (CL-     MLG side strut       600-0710 and 601-0546.
 March 19, 2001.                   600), CL-600-2A12    retraction
                                   (CL-601) and CL-     actuator eye bolt.
                                   600-2B16 (CL-601-
                                   3A and CL-601-3R)
                                   airplanes.
M-DT SB19090-32-4, dated March    CL-600-2B16 (CL-     MLG shock strut....  604-32-014.
 19, 2001.                         604) airplanes.
M-DT SB20020-32-5, dated July     CL-600-2B16 (CL-     NLG shock strut....  604-32-014.
 12, 2001.                         604) airplanes.
M-DT SB200814001-32-3, dated      CL-600-1A11 (CL-     NLG drag brace       600-0710 and 601-0546.
 March 19, 2001.                   600), CL-600-2A12    hinge pin.
                                   (CL-601) and CL-
                                   600-2B16 (CL-601-
                                   3A and CL-601-3R)
                                   airplanes.
M-DT SB200922001/2-32-6, dated    CL-600-1A11 (CL-     MLG shock strut....  600-0710.
 March 19, 2001.                   600) airplanes.
M-DT SB200924003/004-32-16,       CL-600-1A11 (CL-     NLG shock strut....  600-0710.
 dated July 12, 2001.              600) airplanes.
M-DT SB6100-32-10, dated March    CL-600-2A12 (CL-     MLG shock strut pin  601-0546.
 19, 2001.                         601) and CL-600-
                                   2B16 (CL-601-3A
                                   and CL-601-3R)
                                   airplanes.
M-DT SB6500-32-1, dated March     CL-600-1A11 (CL-     MLG side strut       600-0710 and 601-0546.
 19, 2001.                         600), CL-600-2A12    retraction
                                   (CL-601) and CL-     actuator.
                                   600-2B16 (CL-601-
                                   3A and CL-601-3R)
                                   airplanes.
M-DT SB7200-32-6, dated March     CL-600-1A11 (CL-     NLG drag brace       600-0710 and 601-0546.
 19, 2001.                         600), CL-600-2A12    hinge pin.
                                   (CL-601) and CL-
                                   600-2B16 (CL-601-
                                   3A and CL-601-3R)
                                   airplanes.
M-DT SB7300-32-16, dated July     CL-600-2A12 (CL-     NLG shock strut....  601-0546.
 12, 2001.                         601) and CL-600-
                                   2B16 (CL-601-3A
                                   and CL-601-3R)
                                   airplanes.
----------------------------------------------------------------------------------------------------------------

(h) Retained Requirement To Establish the Number of Landings

    This paragraph restates the actions required by paragraph (g) of 
AD 2005-15-04, Amendment 39-14193 (70 FR 43032, July 26, 2005), with 
revised affected airplanes. Except for Model CL-600-2B16 airplanes 
having serial numbers 5314 through 5595 inclusive: At the applicable 
time specified in paragraph (g) of this AD, if a component does not 
have a serial number and the CSN or TSN were not tracked, use the 
formula in the applicable Messier-Dowty service bulletin in table 1 
to paragraph (g) of this AD to establish the number of landings (TSN 
or CSN), and record the newly calculated TSN or CSN in the aircraft 
log books.

(i) Retained Requirement To Revise the Airworthiness Limitations 
Section (ALS)

    This paragraph restates the revision required by paragraph (h) 
of AD 2005-15-04, Amendment 39-14193 (70 FR 43032, July 26, 2005), 
with revised affected airplanes. Except for Model CL-600-2B16 
airplanes having serial numbers 5514 through 5595 inclusive: Within 
30 days after August 30, 2005 (the effective date of AD 2005-15-04), 
revise the ALS of the applicable Instructions for Continued 
Airworthiness to reflect the new life limits of the landing gear 
parts by inserting copies of the Canadair temporary revisions (TR) 
in table 2 to paragraph (i) of this AD into the ALS of the 
applicable Canadair Time-Limits/Maintenance Check Manual. When the 
contents of the TRs are included in the general revisions of the 
ALS, these TRs may be removed provided the relevant information in 
the ALS is identical to that in the TRs.

[[Page 79332]]

                        Table 2 to Paragraph (i) of This AD--Canadair Temporary Revisions
----------------------------------------------------------------------------------------------------------------
                                               Applicable Canadair Time-
              Temporary revision                Limits/Maintenance Check    Manual              Model
                                                         Manual            section
----------------------------------------------------------------------------------------------------------------
5-116, dated April 11, 2002..................  PSP 605..................    5-10-10  CL-600-1A11 (CL-600)
                                                                                      airplanes.
5-190, dated April 11, 2002..................  PSP 601-5................    5-10-10  CL-600-2A12 (CL-601) and CL-
                                                                                      600-2B16 (CL-601-3A and CL-
                                                                                      601-3R) airplanes.
5-191, dated April 11, 2002..................  PSP 601-5................    5-10-11  CL-600-2A12 (CL-601) and CL-
                                                                                      600-2B16 (CL-601-3A and CL-
                                                                                      601-3R) airplanes.
5-192, dated April 11, 2002..................  PSP 601-5................    5-10-12  CL-600-2A12 (CL-601) and CL-
                                                                                      600-2B16 (CL-601-3A and CL-
                                                                                      601-3R) airplanes.
5-2-6, dated April 11, 2002..................  CL-604...................    5-10-10  CL-600-2B16 (CL-604)
                                                                                      airplanes.
5-204, dated April 11, 2002..................  PSP 601A-5...............    5-10-10  CL-600-2A12 (CL-601) and CL-
                                                                                      600-2B16 (CL-601-3A and CL-
                                                                                      601-3R) airplanes.
5-205, dated April 11, 2002..................  PSP 601A-5...............    5-10-11  CL-600-2A12 (CL-601) and CL-
                                                                                      600-2B16 (CL-601-3A and CL-
                                                                                      601-3R) airplanes.
5-206, dated April 11, 2002..................  PSP 601A-5...............    5-10-12  CL-600-2A12 (CL-601) and CL-
                                                                                      600-2B16 (CL-601-3A and CL-
                                                                                      601-3R) airplanes.
----------------------------------------------------------------------------------------------------------------

(j) Retained Parts Installation Limitation

    This paragraph restates the limitations specified in paragraph 
(i) of AD 2005-15-04, Amendment 39-14193 (70 FR 43032, July 26, 
2005), with revised affected airplanes. Except for Model CL-600-2B16 
airplanes having serial numbers 5514 through 5595 inclusive: As of 
August 30, 2005 (the effective date of AD 2005-15-04), no person may 
install on any airplane a landing gear part, unless it has had the 
applicable part number or serial number added in accordance with 
paragraph (g) of this AD; and has had the number of landings 
established in accordance with paragraph (h) of this AD.

(k) Retained Stipulation of Information of No Reporting

    This paragraph restates the stipulation specified in paragraph 
(j) of AD 2005-15-04, Amendment 39-14193 (70 FR 43032, July 26, 
2005). Although the service bulletins identified in paragraph (g) of 
this AD specify that operators should submit incorporation notices 
to Bombardier after each new part number or serial number and 
landings assigned to these parts is added, this AD does not include 
that action.

(l) New Requirement of This AD: Add Serial Numbers and Part Numbers

    (1) For Model CL-600-2B16 (CL-604 Variant) airplanes: Within 96 
months after the effective date of this AD, add serial numbers and 
part numbers, as applicable, to the parts identified in paragraphs 
(l)(1)(i) and (l)(1)(ii) of this AD, as applicable, in accordance 
with the Accomplishment Instructions of Bombardier Service Bulletin 
604-32-014, Revision 02, dated May 9, 2011, including Appendix 1, 
dated May 9, 2011, and Service Bulletin Information Sheet, dated 
July 6, 2010.
    (i) For airplanes having serial numbers 5301 through 5513 
inclusive: Main fitting/drag stay pin of the NLG having P/N 
200811721.
    (ii) For airplanes having serial numbers 5301 through 5573 
inclusive, 5579, and 5595: NLG crossbeam pins having P/N 200814601 
and NLG center hinge pins having P/N 200814624.
    (2) For Bombardier Model CL-600-2A12 (CL-601) airplanes and 
Model CL-600-2B16 (CL-601-3A and CL-601-3R Variants) airplanes: 
Within 60 months after the effective date of this AD, add serial 
numbers and part numbers, as applicable, to left and right MLG side 
strut pins having P/N 6318-1 or 6318-3; and to left and right MLG 
hinge pins having P/N 6329-3; in accordance with the Accomplishment 
Instructions of Bombardier Service Bulletin 601-0546, Revision 03, 
dated May 9, 2011, including Appendix 1, dated May 9, 2011, and 
Service Bulletin Information Sheet, dated July 6, 2010.
    (3) For Bombardier Model CL-600-2A12 (CL-601) airplanes and 
Model CL-600-2B16 (CL-601-3A and CL-601-3R Variants) airplanes: 
Within 120 months after the effective date of this AD, add serial 
numbers and part numbers, as applicable, to NLG main fitting/drag 
stay pins having P/N 200811721; NLG drag brace pivot pins having P/N 
200814601; and left and right MLG pintle pins having P/N 6324-1; in 
accordance with the Accomplishment Instructions of Bombardier 
Service Bulletin 601-0546, Revision 03, dated May 9, 2011, including 
Appendix 1, dated May 9, 2011, and Service Bulletin Information 
Sheet, dated July 6, 2010.
    (4) For Bombardier Model CL-600-1A11 (CL-600) airplanes: Within 
120 months after the effective date of this AD, add serial numbers 
and part numbers, as applicable, to NLG main fitting/drag stay pins 
having P/N 200811721 and NLG drag brace pivot pins having P/N 
200814601, in accordance with the Accomplishment Instructions of 
Bombardier Service Bulletin 600-0710, Revision 03, dated May 9, 
2011, including Appendix 1, dated May 9, 2011, and Service Bulletin 
Information Sheet, dated July 6, 2010.

(m) New Requirement of This AD: Establish the Number of Landings (CSN)

    At the applicable times specified in paragraph (l) of this AD: 
If a component does not have a serial number and the number of 
landings (CSN) were not tracked, use the applicable service bulletin 
specified in paragraph (m)(1), (m)(2), or (m)(3) of this AD to 
establish the number of landings (CSN).
    (1) Appendix 1, dated May 9, 2011, of Bombardier Service 
Bulletin 604-32-014, Revision 02, dated May 9, 2011, including 
Service Bulletin Information Sheet, dated July 6, 2010 (for 
Bombardier Model CL-600-2B16 (CL-604 Variant) airplanes).
    (2) Appendix 1, dated May 9, 2011, of Bombardier Service 
Bulletin 601-0546, Revision 03, dated May 9, 2011, including Service 
Bulletin Information Sheet, dated July 6, 2010 (for Model CL-600-
2A12 (CL-601) airplanes and Model CL-600-2B16 (CL-601-3A and CL-601-
3R Variants) airplanes).
    (3) Appendix 1, dated May 9, 2011, of Bombardier Service 
Bulletin 600-0710, Revision 03, dated May 9, 2011, including Service 
Bulletin Information Sheet, dated July 6, 2010 (for Bombardier Model 
CL-600-1A11 (CL-600) airplanes).

(n) New Requirement of This AD: Records Update

    Concurrently with the actions specified in paragraphs (l) and 
(m) of this AD: Record any newly calculated number of landings 
(CSN), new part numbers, and new serial numbers in the airplane 
technical records and manuals.

(o) New Requirement of This AD: Parts Installation Limitation

    As of the effective date of this AD, no person may install on 
any airplane a landing gear part identified in paragraph (l) of this 
AD, unless it has had the applicable part number or serial number 
added as required by paragraph (l) of this AD, and had the number of 
landings (CSN) established as required by paragraph (m) of this AD.

(p) New Action of This AD: Optional Method of Compliance

    Accomplishing the action required by paragraph (g) of this AD, 
in accordance with the Accomplishment Instructions of the applicable 
service bulletin specified in paragraph (p)(1), (p)(2), or (p)(3) of 
this AD, is acceptable for compliance with the requirements of 
paragraph (g) of this AD.

[[Page 79333]]

    (1) Bombardier Service Bulletin 601-0546, Revision 03, dated May 
9, 2011, including Appendix 1, dated May 9, 2011, and Service 
Bulletin Information Sheet, dated July 6, 2010 (for Model CL-600-
2A12 (CL-601) airplanes and Model CL-600-2B16 (CL-601-3A and CL-601-
3R Variants) airplanes).
    (2) Bombardier Service Bulletin 604-32-014, Revision 02, dated 
May 9, 2011, including Appendix 1, dated May 9, 2011, and Service 
Bulletin Information Sheet, dated July 6, 2010 (for Model CL-600-
2B16 (CL-604 Variant) airplanes).
    (3) Bombardier Service Bulletin 600-0710, Revision 03, dated May 
9, 2011, including Appendix 1, dated May 9, 2011, and Service 
Bulletin Information Sheet, dated July 6, 2010 (for Model CL-600-
1A11 (CL-600) airplanes).

(q) Credit for Previous Actions

    (1) This paragraph provides credit for the actions required by 
paragraph (g) of this AD, if those actions were performed before 
August 30, 2005 (the effective date of AD 2005-15-04, Amendment 39-
14193 (70 FR 43032, July 26, 2005)), using the applicable service 
bulletin specified in paragraph (q)(1)(i), (q)(1)(ii), or 
(q)(1)(iii) of this AD, which are not incorporated by reference in 
this AD.
    (i) Bombardier Service Bulletin 601-0546, dated May 31, 2002 
(for Model CL-600-2A12 (CL-601) airplanes and Model CL-600-2B16 (CL-
601-3A and CL-601-3R Variants) airplanes).
    (ii) Bombardier Service Bulletin 600-0710, dated May 31, 2002 
(for Model CL-600-1A11 (CL-600) airplanes).
    (iii) Bombardier Service Bulletin 604-32-014, dated May 31, 2002 
(for Model CL-600-2B16 (CL-604 Variant) airplanes).
    (2) This paragraph provides credit for the addition of serial 
numbers and part numbers required by paragraph (l) of this AD, if 
those actions were performed before the effective date of this AD 
using the applicable service bulletin specified in paragraph 
(q)(2)(i), (q)(2)(ii), or (q)(2)(iii) of this AD, which are not 
incorporated by reference in this AD.
    (i) Bombardier Service Bulletin 604-32-014, Revision 01, dated 
October 29, 2007 (for Bombardier Model CL-600-2B16 (CL-604 Variant) 
airplanes).
    (ii) Bombardier Service Bulletin 601-0546, Revision 02, dated 
October 29, 2007 (for Model CL-600-2A12 (CL-601) airplanes and Model 
CL-600-2B16 (CL-601-3A and CL-601-3R Variants) airplanes).
    (iii) Bombardier Service Bulletin 600-0710, Revision 02, dated 
October 29, 2007 (for Bombardier Model CL-600-1A11 (CL-600) 
airplanes).
    (3) This paragraph provides credit for the establishment of the 
number of landings (CSN) required by paragraph (m) of this AD, if 
those actions were performed before the effective date of this AD 
using the applicable service bulletin information sheet specified in 
paragraph (q)(3)(i), (q)(3)(ii), or (q)(3)(iii) of this AD.
    (i) Service Bulletin Information Sheet, dated July 6, 2010, of 
Bombardier Service Bulletin 604-32-014 (for Bombardier Model CL-600-
2B16 (CL-604 Variant) airplanes).
    (ii) Service Bulletin Information Sheet, dated July 6, 2010, of 
Bombardier Service Bulletin 601-0546 (for Bombardier Model CL-600-
2A12 (CL-601) and Model CL-600-2B16 (CL-601-3A and CL-601-3R 
Variants) airplanes).
    (iii) Service Bulletin Information Sheet, dated July 6, 2010 of 
Bombardier Service Bulletin 600-0710 (for Bombardier Model CL-600-
1A11 (CL-600) airplanes).

(r) 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, New York 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. AMOCs approved previously in accordance with AD 
2005-15-04, Amendment 39-14193 (70 FR 43032, July 26, 2005), are 
approved as AMOCs for the corresponding provisions of this AD.
    (2) Airworthy Product: For any requirement in this AD to obtain 
corrective actions from a manufacturer or other source, use these 
actions if they are FAA-approved. Corrective actions are considered 
FAA-approved if they are approved by the State of Design Authority 
(or their delegated agent). You are required to assure the product 
is airworthy before it is returned to service.

(s) Related Information

    (1) Refer to the Mandatory Continuing Airworthiness Information 
Canadian Airworthiness Directives specified in paragraphs (s)(1)(i), 
(s)(1)(ii), and (s)(1)(iii) of this AD for related information. 
These MCAIs may be found in the AD docket on the Internet at http://www.regulations.gov by searching for and locating it in Docket No. 
FAA-2013-1065.
    (i) Canadian Airworthiness Directive CF-2003-18R2, dated 
September 28, 2011.
    (ii) Canadian Airworthiness Directive CF-2003-20R1, dated 
September 28, 2011.
    (iii) Canadian Airworthiness Directive CF-2003-21R2, dated 
September 28, 2011.
    (2) For Bombardier, Inc./Canadair 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. For Messier-Dowty service information 
identified in this proposed AD, contact Messier Services Americas, 
Customer Support Center, 45360 Severn Way, Sterling, VA 20166-8910. 
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 December 19, 2013.
Jeffrey E. Duven,
Manager, Transport Airplane Directorate, Aircraft Certification 
Service.
[FR Doc. 2013-31185 Filed 12-27-13; 8:45 am]
BILLING CODE 4910-13-P
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