```

[Federal Register Volume 79, Number 149 (Monday, August 4, 2014)]
[Proposed Rules]
[Pages 45140-45146]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: 2014-18401]

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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2014-0491; Directorate Identifier 2014-NM-023-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 adopt a new airworthiness directive (AD) for 
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. This proposed AD was prompted by a determination that the 
forward lugs of the flap hinge box might not conform to engineering 
drawings, which could result in premature fatigue cracking. This 
proposed AD would require revising the maintenance or inspection 
program to include new airworthiness limitations tasks; and measuring 
the forward lug edge distance of each flap hinge box, and inspecting 
for cracking and damage (i.e., deformation or bearing failure) of the 
forward lug edge of each flap hinge box, and repair if necessary. We 
are proposing this AD to detect and correct non-conforming flap hinge 
box forward lugs, which could result in failure of the lugs and 
detachment of the flap hinge box and consequent detachment of the flap 
surface.

DATES: We must receive comments on this proposed AD by September 18, 
2014.

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: 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 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-2014-
0491; 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: Ricardo Garcia, Aerospace Engineer, 
Airframe and Mechanical Systems Branch, ANE-171, FAA, New York Aircraft 
Certification Office, 1600 Stewart Avenue, Suite 410, Westbury, NY 
11590; telephone 516-228-7331; 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-2014-0491; 
Directorate Identifier 2014-NM-023-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

    Transport Canada Civil Aviation (TCCA), which is the aviation 
authority for Canada, has issued Canadian Airworthiness Directive CF-
2014-01, dated January 3, 2014 (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:

    The aeroplane manufacturer has determined that the flap hinge 
box forward lugs edge distance may not conform to the engineering 
drawings. Non-conforming flap hinge box forward lugs may result in 
premature fatigue cracking.
    Failure of the lugs 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.
    This [Canadian] AD mandates the incorporation of new Time 
Limits/Maintenance Checks (TLMC) Airworthiness Limitations (AWL) 
tasks, and the measurement [and inspection for cracking and damage] 
of the forward lug edge distance of each flap hinge-box and 
rectification as required.

    Corrective actions include repairing damage and cracking. 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-2014-
0491.

Relevant Service Information

    Bombardier has issued the following service information. The 
actions described in this service information are intended to correct 
the unsafe condition identified in the MCAI.
     Bombardier Service Bulletin 600-0762, dated September 26, 
2013 (for Model CL-600-1A11 airplanes).

[[Page 45141]]

     Bombardier Service Bulletin 601-0631, dated September 26, 
2013 (for Models CL-600-2A12 and CL-600-2B16 airplanes).
     Bombardier Service Bulletin 604-57-007, dated September 
26, 2013 (for Model CL-600-2B16 airplanes).
     Bombardier Service Bulletin 605-57-005, dated September 
26, 2013 (for Model CL-600-2B16 airplanes).
     Canadair Challenger Temporary Revision 5-157, dated July 
8, 2013, to Canadair Challenger Time Limits/Maintenance Checks Manual, 
PSP 605.
     Canadair Challenger Temporary Revision 5-158, dated July 
8, 2013, to Canadair Challenger Time Limits/Maintenance Checks Manual, 
PSP 605.
     Canadair Challenger Temporary Revision 5-262, dated July 
8, 2013, to Canadian Challenger Time Limits/Maintenance Checks Manual 
PSP 601.
     Canadair Challenger Temporary Revision 5-275, dated July 
8, 2013, to Canadian Challenger Time Limits/Maintenance Checks Manual 
PSP 601A.
     Canadair Challenger Temporary Revision 5-276, dated July 
8, 2013, to Canadian Challenger Time Limits/Maintenance Checks Manual 
PSP 601A.
     Tasks 57-50-00-121 and 57-52-01-102 of Section 5-10-30 of 
Part 2, ``Airworthiness Limitations,'' of Bombardier CL-605 Time 
Limits/Maintenance Checks Manual, Revision 8, dated July 8, 2013.
     Tasks 57-50-00-121 and 57-52-01-102 of Section 5-10-30 of 
Part 2, ``Airworthiness Limitations,'' of Bombardier CL-604 Time 
Limits/Maintenance Checks Manual, Revision 20, dated July 8, 2013.

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 designs.
    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 (k) 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.

``Contacting the Manufacturer'' Paragraph in This Proposed AD

    Since late 2006, we have included a standard paragraph titled 
``Airworthy Product'' in all MCAI ADs in which the FAA develops an AD 
based on a foreign authority's AD.
    The MCAI or referenced service information in an FAA AD often 
directs the owner/operator to contact the manufacturer for corrective 
actions, such as a repair. Briefly, the Airworthy Product paragraph 
allowed owners/operators to use corrective actions provided by the 
manufacturer if those actions were FAA-approved. In addition, the 
paragraph stated that any actions approved by the State of Design 
Authority (or its delegated agent) are considered to be FAA-approved.
    In an NPRM having Directorate Identifier 2012-NM-101-AD (78 FR 
78285, December 26, 2013), we proposed to prevent the use of repairs 
that were not specifically developed to correct the unsafe condition, 
by requiring that the repair approval provided by the State of Design 
Authority or its delegated agent specifically refer to the FAA AD. This 
change was intended to clarify the method of compliance and to provide 
operators with better visibility of repairs that are specifically 
developed and approved to correct the unsafe condition. In addition, we 
proposed to change the phrase ``its delegated agent'' to include a 
design approval holder (DAH) with State of Design Authority design 
organization approval (DOA), as applicable, to refer to a DAH 
authorized to approve required repairs for the proposed AD.
    One commenter to the NPRM having Directorate Identifier 2012-NM-
101-AD (78 FR 78285, December 26, 2013) stated the following: ``The 
proposed wording, being specific to repairs, eliminates the 
interpretation that Airbus messages are acceptable for approving minor 
deviations (corrective actions) needed during accomplishment of an AD 
mandated Airbus service bulletin.''
    This comment has made the FAA aware that some operators have 
misunderstood or misinterpreted the Airworthy Product paragraph to 
allow the owner/operator to use messages provided by the manufacturer 
as approval of deviations during the accomplishment of an AD-mandated 
action. The Airworthy Product paragraph does not approve messages or 
other information provided by the manufacturer for deviations to the 
requirements of the AD-mandated actions. The Airworthy Product 
paragraph only addresses the requirement to contact the manufacturer 
for corrective actions for the identified unsafe condition and does not 
cover deviations from other AD requirements. However, deviations to AD-
required actions are addressed in 14 CFR 39.17, and anyone may request 
the approval for an alternative method of compliance to the AD-required 
actions using the procedures found in 14 CFR 39.19.
    To address this misunderstanding and misinterpretation of the 
Airworthy Product paragraph, we have changed the paragraph and retitled 
it ``Contacting the Manufacturer.'' This paragraph now clarifies that 
for any requirement in this proposed AD to obtain corrective actions 
from a manufacturer, the action must be accomplished using a method 
approved by the FAA, TCCA, or Bombardier, Inc.'s TCCA Design Approval 
Organization (DAO).
    The Contacting the Manufacturer paragraph also clarifies that, if 
approved by the DAO, the approval must include the DAO-authorized 
signature. The DAO signature indicates that the data and information 
contained in the document are TCCA-approved, which is also FAA-
approved. Messages and other information provided by the manufacturer 
that do not contain the DAO-authorized signature approval are not TCCA-
approved, unless TCCA directly approves the manufacturer's message or 
other information.
    This clarification does not remove flexibility previously afforded 
by the Airworthy Product paragraph. Consistent with long-standing FAA 
policy, such flexibility was never intended for required actions. This 
is also consistent with the recommendation of the Airworthiness 
Directive Implementation Aviation Rulemaking Committee to increase 
flexibility in complying with ADs by identifying those actions in 
manufacturers' service instructions that are ``Required for 
Compliance'' with ADs. We continue to work with manufacturers to 
implement this recommendation. But once we determine that an action is 
required, any deviation from the requirement must be approved as an 
alternative method of compliance.

[[Page 45142]]

Costs of Compliance

    We estimate that this proposed AD affects 105 airplanes of U.S. 
registry.
    We also estimate that it would take about 45 work-hours per product 
to comply with the basic requirements of this proposed AD. The average 
labor rate is $85 per work-hour. Based on these figures, we estimate 
the cost of this proposed AD on U.S. operators to be $401,625, or 
$3,825 per product.
    We have received no definitive data that would enable us to provide 
cost estimates for the cost of parts or 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 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.

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 adding the following new airworthiness 
directive (AD):

Bombardier, Inc.: Docket No. FAA-2014-0491; Directorate Identifier 
2014-NM-023-AD.

(a) Comments Due Date

    We must receive comments by September 18, 2014.

(b) Affected ADs

    None.

(c) Applicability

    This AD applies to the airplanes identified in paragraphs (c)(1) 
through (c)(4) of this AD, certificated in any category.
    (1) Bombardier, Inc. Model CL-600-1A11 (CL-600) airplanes, 
serial numbers 1004 through 1085 inclusive.
    (2) Bombardier, Inc. Model CL-600-2A12 (CL-601) airplanes, 
serial numbers 3001 through 3066 inclusive.
    (3) Bombardier, Inc. Model CL-600-2B16 (CL-601-3A and CL-601-3R 
Variants) airplanes, serial numbers 5001 through 5194 inclusive.
    (4) Bombardier, Inc. Model CL-600-2B16 (CL-604 Variants) 
airplanes; serial numbers 5301 through 5665 inclusive, and 5701 
through 5953 inclusive.

(d) Subject

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

(e) Reason

    This AD was prompted by a determination that the flap hinge box 
forward lugs edge distance might not conform to engineering 
drawings, which could result in premature fatigue cracking. We are 
issuing this AD to detect and correct non-conforming flap hinge box 
forward lugs, which could result in failure of the lugs and 
detachment of the flap hinge box and consequent detachment of the 
flap surface.

(f) Compliance

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

(g) Maintenance or Inspection Program Revision

    Within 60 days after the effective date of this AD, revise the 
maintenance or inspection program, as applicable, by incorporating 
the applicable airworthiness limitation (AWL) tasks as specified in 
table 1 to paragraph (g) of this AD. The initial compliance time for 
doing the task is at the applicable times specified in table 1 to 
paragraph (g) of this AD.

    Note 1 to paragraph (g) of this AD:  For the incorporation of 
tasks specified in the temporary revisions (TRs) specified in table 
1 to paragraph (g) of this AD that are a part of the maintenance or 
inspection program revision required by paragraph (g) of this AD, 
such incorporation may be done by inserting a copy of the applicable 
TRs specified in table 1 to paragraph (g) of this AD into the 
applicable ``time limits/maintenance checks'' (TLMC) manuals 
specified in table 1 to paragraph (g) of this AD. When the 
applicable TRs specified in table 1 to paragraph (g) of this AD have 
been included in general revisions of the applicable TLMC manual 
specified in table 1 to paragraph (g) of this AD, the general 
revisions may be inserted in the applicable TLMC manual specified in 
table 1 to paragraph (g) of this AD.

                                   Table 1 to Paragraph (g) of This AD--Tasks
----------------------------------------------------------------------------------------------------------------
                                                                Canadair service
           Affected airplanes                Task No.              information          Initial compliance time
----------------------------------------------------------------------------------------------------------------
Model CL-600-1A11 (CL-600 Variant)           57-40-00-186  Canadair Challenger         Within 500 flight cycles
 airplanes with inboard flaps having                        Temporary Revision (TR) 5-  after the effective date
 greater than 7,400 total flight cycles                     158, dated July 8, 2013,    of this AD, but not
 but equal to or less than 14,850 total                     of the Canadair             later than 15,100 total
 flight cycles as of the effective date                     Challenger Time Limits/     flight cycles.
 of this AD.                                                Maintenance Checks (TLMC)
                                                            Manual, PSP 605.
Model CL600-1A11 (CL-600 Variant)            57-40-00-186  Canadair Challenger TR 5-   Within 250 flight cycles
 airplanes with inboard flaps having                        158, dated July 8, 2013,    after the effective date
 greater than 14,850 total flight                           of the Canadair             of this AD.
 cycles as of the effective date of                         Challenger TLMC Manual,
 this AD.                                                   PSP 605.

[[Page 45143]]

 
Model CL-600-1A11 (CL-600 Variant)           57-40-00-186  Canadair Challenger TR 5-   Before the accumulation
 airplanes with inboard flaps having                        158, dated July 8, 2013,    of 7,900 total flight
 equal to or less than 7,400 total                          of the Canadair             cycles.
 flight cycles.                                             Challenger TLMC Manual,
                                                            PSP 605.
Model CL-600-1A11 (CL-600 Variant)           57-40-00-160  Canadair Challenger TR 5-   Within 500 flight cycles
 airplanes with outboard flaps having                       157, dated July 8, 2013,    after the effective date
 greater than 7,500 total flight                            of the Canadair             of this AD, but no later
 cycles, but equal to or less than                          Challenger TLMC Manual,     than 11,600 total flight
 11,350 total flight cycles as of the                       PSP 605.                    cycles.
 effective date of this AD.
Model CL-600-1A11 (CL-600 Variant)           57-40-00-160  Canadair Challenger TR 5-   Within 250 flight cycles
 airplanes with outboard flaps having                       157, dated July 8, 2013,    after the effective date
 greater than 11,350 total flight                           of the Canadair             of this AD.
 cycles as of the effective date of                         Challenger TLMC Manual,
 this AD.                                                   PSP 605.
Model CL-600-1A11 (CL-600 Variant)           57-40-00-160  Canadair Challenger TR 5-   Before the accumulation
 airplanes with outboard flaps having                       157, dated July 8, 2013,    of 8,000 total flight
 equal to or less than 7,500 total                          of the Canadair             cycles.
 flight cycles.                                             Challenger TLMC Manual,
                                                            PSP 605.
Model CL-600-2A12 (CL-601 Variant)           57-40-01-101  Canadair Challenger TR 5-   Within 500 flight cycles
 airplanes with inboard flaps having                        262, dated July 8, 2013,    after the effective date
 greater than 7,400 total flight                            of the Canadair             of this AD, but no later
 cycles, but equal to or less than                          Challenger TLMC Manual,     than 15,100 total flight
 14,850 total flight cycles, as of the                      PSP 601-5.                  cycles.
 effective date of this AD.
Model CL-600-2A12 (CL-601 Variant)           57-40-01-101  Canadair Challenger TR 5-   Within 250 flight cycles
 airplanes with inboard flaps with                          262, dated July 8, 2013,    after the effective date
 greater than 14,850 total flight                           of the Canadair             of this AD.
 cycles as of the effective date of                         Challenger TLMC Manual,
 this AD.                                                   PSP 601-5.
Model CL-600-2A12 (CL-601 Variant)           57-40-01-101  Canadair Challenger TR 5-   Before the accumulation
 airplanes with inboard flaps with                          262, dated July 8, 2013,    of 7,900 total flight
 equal to or less than 7,400 total                          of the Canadair             cycles.
 flight cycles as of the effective date                     Challenger TLMC Manual,
 of this AD.                                                PSP 601-5.
Model CL-600-2A12 (CL-601 Variant)           57-40-00-175  Canadair Challenger TR 5-   Within 500 flight cycles
 airplanes with outboard flaps with                         262, dated July 8, 2013,    after the effective date
 greater than 7,500 total flight cycles                     of the Canadair             of this AD, but not
 but equal to or less than 11,350 total                     Challenger TLMC Manual,     later than 11,600 total
 flight cycles as of the effective date                     PSP 601-5.                  flight cycles.
 of this AD.
Model CL-600-2A12 (CL-601 Variant)           57-40-00-175  Canadair Challenger TR 5-   Within 250 flight cycles
 airplanes with outboard flaps having                       262, dated July 8, 2013,    after the effective date
 greater than 11,350 total flight                           of the Canadair             of this AD.
 cycles as of the effective date of                         Challenger TLMC Manual,
 this AD.                                                   PSP 601-5.
Model CL-600-2A12 (CL-601 Variant)           57-40-00-175  Canadair Challenger TR 5-   Before the accumulation
 airplanes with outboard flaps having                       262, dated July 8, 2013,    of 8,000 total flight
 equal to or less than 7,500 total                          of the Canadair             cycles.
 flight cycles as of the effective date                     Challenger TLMC Manual,
 of this AD.                                                PSP 601-5.
Model CL-600-2B16 (CL-601-3A and -3R         57-40-00-101  Canadair Challenger TR 5-   Within 500 flight cycles
 Variant) airplanes having S/Ns 5001                        276, dated July 8, 2013,    after the effective date
 through 5194 inclusive with inboard                        of the Canadair             of this AD, but not
 flaps having greater than 7,400 total                      Challenger TLMC Manual,     later than 15,100 total
 flight cycles but equal to or less                         PSP 601A-5.                 flight cycles.
 than 14,850 total flight cycles as of
 the effective date of this AD.
Model CL-600-2B16 (CL-601-3A and -3R         57-40-00-101  Canadair Challenger TR 5-   Within 250 flight cycles.
 Variant) airplanes having S/Ns 5001                        276, dated July 8, 2013,
 through 5194 inclusive, with inboard                       of the Canadair
 flaps having greater than 14,850 total                     Challenger TLMC Manual,
 flight cycles as of the effective date                     PSP 601A-5.
 of this AD.
Model CL-600-2B16 (CL-601-3A and -3R         57-40-00-101  Canadair Challenger TR 5-   Before the accumulation
 Variant) airplanes having S/Ns 5001                        276, dated July 8, 2013,    of 7,900 total flight
 through 5194 inclusive, with inboard                       of the Canadair             cycles.
 flaps having equal to or less than                         Challenger TLMC Manual,
 7,400 total flight cycles as of the                        PSP 601A-5.
 effective date of this AD.

[[Page 45144]]

 
Model CL-600-2B16 (CL-601-3A and -3R         57-40-00-174  Canadair Challenger TR 5-   Within 500 flight cycles
 Variant) airplanes having S/Ns 5001                        276, dated July 8, 2013,    after the effective date
 through 5194 inclusive, with outboard                      of the Canadair             of this AD, but no later
 flaps having greater than 7,500 total                      Challenger TLMC Manual,     than 11,600 total flight
 flight cycles but equal to or less                         PSP 601A-5.                 cycles.
 than 11,350 total flight cycles as of
 the effective date of this AD.
Model CL-600-2B16 (CL-601-3A and -3R         57-40-00-174  Canadair Challenger TR 5-   Within 250 flight cycles
 Variant) airplanes having S/Ns 5001                        276, dated July 8, 2013,    after the effective date
 through 5194 inclusive, with outboard                      of the Canadair             of this AD.
 flaps having greater than 11,350 total                     Challenger TLMC Manual,
 flight cycles as of the effective date                     PSP 601A-5.
 of this AD.
Model CL-600-2B16 (CL-601-3A and -3R         57-40-00-174  Canadair Challenger TR 5-   Before the accumulation
 Variant) airplanes having S/Ns 5001                        276, dated July 8, 2013,    of 8,000 total flight
 through 5194 inclusive, with outboard                      of the Canadair             cycles.
 flaps having equal to or less than                         Challenger TLMC Manual,
 7,500 total flight cycles as of the                        PSP 601A-5.
 effective date of this AD.
Model CL-600-2B16 (CL-604 Variant)           57-50-00-121  Section 5-10-30 of Part 2,  Before the accumulation
 airplanes with inboard and outboard                        ``Airworthiness             of 7,800 total flight
 flaps.                                                     Limitations,'' of           cycles, or within 500
                                                            Bombardier CL-604 TLMC      flight cycles after the
                                                            Manual, Revision 8, dated   effective date of this
                                                            July 8, 2013.               AD, whichever occurs
                                                                                        later.
Model CL-600-2B16 (CL-604 Variant)           57-52-01-102  Section 5-10-30 of Part 2,  At the time specified in
 airplanes, S/Ns 5301 through 5665                          ``Airworthiness             the task.
 inclusive.                                                 Limitations,'' of
                                                            Bombardier CL-604 TLMC
                                                            Manual, Revision 8, dated
                                                            July 8, 2013.
Model CL-600-2B16 (CL-604 Variant)       57-50-00-121 and  Section 5-10-30 of Part 2,  At the applicable time
 airplanes, S/Ns 5701 through 5953           57-52-01-102   ``Airworthiness             specified in the tasks.
 inclusive.                                                 Limitations,'' of
                                                            Bombardier CL-605 TLMC
                                                            Manual, Revision 8, dated
                                                            July 8, 2013.
----------------------------------------------------------------------------------------------------------------

(h) Lug Edge Measurement and Inspection

    At the applicable times specified in table 2 to paragraphs (h) 
and (i)(1) of this AD, measure the forward lug edge distance of all 
flap hinge boxes, in accordance with the applicable service bulletin 
specified in paragraphs (h) and (i)(1) of this AD; and do a general 
visual inspection for cracking and damage (i.e., deformation or 
bearing failure) of the forward lug edge of all flap hinge boxes.

    Table 2 to Paragraphs (h) and (i)(1) of This AD--Compliance Times for Lug Edge Measurement and Inspection
----------------------------------------------------------------------------------------------------------------
           Airplane models                  Affected flaps          Compliance time        Service information
----------------------------------------------------------------------------------------------------------------
Model CL-600-1A11 (CL-600) airplanes   Inboard flaps having     Before the accumulation  Bombardier Service
 having S/N 1004 through 1085           less than or equal to    of 7,900 total flight    Bulletin 600-0762,
 inclusive.                             7,400 total flight       cycles, or within 48     dated September 26,
                                        cycles as of the         months after the         2013.
                                        effective date of this   effective date of this
                                        AD.                      AD, whichever occurs
                                                                 first.
Model CL-600-1A11 (CL-600) airplanes   Inboard flaps having     Before the accumulation  Bombardier Service
 having S/N 1004 through 1085           greater than 7,400       of 15,100 total flight   Bulletin 600-0762,
 inclusive.                             total flight cycles,     cycles, or within 500    dated September 26,
                                        but equal to or less     flight cycles or 48      2013.
                                        than 14,850 total        months after the
                                        flight cycles as of      effective date of this
                                        the effective date of    AD; whichever occurs
                                        this AD.                 first.
Model CL-600-1A11 (CL-600) airplanes   Inboard flaps having     Within 250 flight        Bombardier Service
 having S/N 1004 through 1085           greater than 14,850      cycles or 48 months      Bulletin 600-0762,
 inclusive.                             total flight cycles as   after the effective      dated September 26,
                                        of the effective date    date of this AD,         2013.
                                        of this AD.              whichever occurs first.
Model CL-600-1A11 (CL-600) airplanes   Outboard flaps having    Before the accumulation  Bombardier Service
 having S/N 1004 through 1085           equal to or less than    of 8,000 total flight    Bulletin 600-0762,
 inclusive.                             7,500 total flight       cycles, or within 48     dated September 26,
                                        cycles as of the         months after the         2013.
                                        effective date of this   effective date of this
                                        AD.                      AD, whichever occurs
                                                                 first.
Model CL-600-1A11 (CL-600) airplanes   Outboard flaps having    Within 500 flight        Bombardier Service
 having S/N 1004 through 1085           greater than 7,500       cycles or 48 months      Bulletin 600-0762,
 inclusive.                             total flight cycles      after the effective      dated September 26,
                                        but less than or equal   date of this AD,         2013.
                                        to 11,350 total flight   whichever occurs
                                        cycles as of the         first; but not
                                        effective date of this   exceeding 11,600 total
                                        AD.                      flight cycles.

[[Page 45145]]

 
Model CL-600-1A11 (CL-600) airplanes   Outboard flaps having    Within 250 flight        Bombardier Service
 having S/N 1004 through 1085           greater than 11,350      cycles or within 48      Bulletin 600-0762,
 inclusive.                             total flight cycles as   months after the         dated September 26,
                                        of the effective date    effective date of this   2013.
                                        of this AD.              AD, whichever occurs
                                                                 first.
Model CL-600-2A12 (CL-601 Variant)     Inboard flaps having     Before the accumulation  Bombardier Service
 and CL-600-2B16 (CL-601-3A and -3R     less than or equal to    of 7,900 total flight    Bulletin 601-0631,
 Variants) airplanes having S/N 3001    7,400 total flight       cycles, or within 48     dated September 26,
 through 3066 inclusive, and 5001       cycles as of the         months after the         2013.
 through 5194 inclusive.                effective date of this   effective date of this
                                        AD.                      AD, whichever occurs
                                                                 first.
Model CL-600-2A12 (CL-601 Variant)     Inboard flaps having     Within 500 flight        Bombardier Service
 and CL-600-2B16 (CL-601-3A and -3R     greater than 7,400       cycles or within 48      Bulletin 601-0631,
 Variant) airplanes having S/N 3001     total flight cycles,     months after the         dated September 26,
 through 3066 inclusive, and 5001       but equal to or less     effective date of this   2013.
 through 5194 inclusive.                than 14,850 total        AD, whichever occurs
                                        flight cycles, as of     first; but not
                                        the effective date of    exceeding 15,100 total
                                        this AD.                 flight cycles.
Model CL-600-2A12 (CL-601 Variant)     Inboard flaps having     Within 250 flight        Bombardier Service
 and CL-600-2B16 (CL-601-3A and -3R     greater than 14,850      cycles or within 48      Bulletin 601-0631,
 Variant) airplanes having S/N 3001     total flight cycles as   months after the         dated September 26,
 through 3066 inclusive, and 5001       of the effective date    effective date of this   2013.
 through 5194 inclusive.                of this AD.              AD, whichever occurs
                                                                 first.
Model CL-600-2A12 (CL-601 Variant)     Outboard flaps having    Before the accumulation  Bombardier Service
 and CL-600-2B16 (CL-601-3A and -3R     less than or equal to    of 8,000 total flight    Bulletin 601-0631,
 Variant) airplanes having S/N 3001     7,500 total flight       cycles, or within 48     dated September 26,
 through 3066 inclusive, and 5001       cycles as of the         months after the         2013.
 through 5194 inclusive.                effective date of this   effective date of this
                                        AD.                      AD, whichever occurs
                                                                 first.
Model CL-600-2A12 (CL-601 Variant)     Outboard flaps having    Within 500 flight        Bombardier Service
 and CL-600-2B16 (CL-601-3A and -3R     greater than 7,500       cycles or within 48      Bulletin 601-0631,
 Variant) airplanes having S/N 3001     total flight cycles,     months after the         dated September 26,
 through 3066 inclusive, and 5001       but equal to or less     effective date of this   2013.
 through 5194 inclusive.                than 11,350 total        AD; but not exceeding
                                        flight cycles, as of     11,600 total flight
                                        the effective date of    cycles.
                                        this AD.
Model CL-600-2A12 (CL-601 Variant)     Outboard flaps having    Within 250 flight        Bombardier Service
 and CL-600-2B16 (CL-601-3A and -3R     greater than 11,350      cycles or 48 months      Bulletin 601-0631,
 Variant) airplanes having S/N 3001     total flight cycles as   after the effective      dated September 26,
 through 3066 inclusive, and 5001       of the effective date    date of this AD,         2013.
 through 5194 inclusive.                of this AD.              whichever occurs first.
Model CL-600-2B16 (CL-604 Variant)     Outboard and inboard     Before the accumulation  Bombardier Service
 airplanes having S/Ns 5301 through     flaps.                   of 7,800 total flight    Bulletin 604-57-007,
 5665 inclusive.                                                 cycles or within 48      dated October 2, 2013.
                                                                 months after the
                                                                 effective date of this
                                                                 AD, whichever occurs
                                                                 first.
Model CL-600-2B16 (CL-604 Variant)     Outboard and inboard     Before the accumulation  Bombardier Service
 airplanes having S/Ns 5701 through     flaps.                   of 7,800 total flight    Bulletin 605-57-005,
 5953 inclusive.                                                 cycles or within 48      dated November 15,
                                                                 months after the         2013.
                                                                 effective date of this
                                                                 AD, whichever occurs
                                                                 first.
----------------------------------------------------------------------------------------------------------------

(i) Corrective Actions

    (1) If, during the measurement required by paragraph (h) of this 
AD, the lug edge distance is equal to or greater than the limit 
specified in the applicable service bulletin specified in table 2 to 
paragraphs (h) and (i)(1) of this AD, no further action is required 
by this paragraph.
    (2) If, during the measurement required by paragraph (h) of this 
AD, the lug edge distance is below the limit specified in the 
applicable service bulletin specified in table 3 to paragraphs (h) 
and (i)(1) of this AD, before further flight, repair using a method 
approved by the Manager, New York ACO, ANE-170, Engine and Propeller 
Directorate, 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.
    (3) If, during the inspection required by paragraph (h) of this 
AD, any cracking or damage is found, before further flight, repair 
using a method approved by the Manager, New York ACO, ANE-170, 
Engine and Propeller Directorate, FAA; or TCCA; or Bombardier, 
Inc.'s TCCA Design Approval Organization (DAO). If approved by the 
DAO, the approval must include the DAO-authorized signature.

(j) No Alternative Actions or Intervals

    After accomplishing the revision 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 (k) of this AD.

(k) Other FAA AD Provisions

    The following provisions also apply to this AD:
    (1) Alternative Methods of Compliance (AMOCs): The Manager, New 
York 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

[[Page 45146]]

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. Before using any approved AMOC, 
notify your appropriate principal inspector, or lacking a principal 
inspector, the manager of the local flight standards district 
office/certificate holding district office. The AMOC approval letter 
must specifically reference this AD.
    (2) Contacting the Manufacturer: For any requirement in this AD 
to obtain corrective actions from a manufacturer, the action must be 
accomplished using a method approved by the Manager, New York ACO, 
ANE-170, Engine and Propeller Directorate, FAA; or TCCA; or 
Bombardier, Inc.'s TCCA Design Approval Organization (DAO). If 
approved by the DAO, the approval must include the DAO-authorized 
signature.

(l) Related Information

    (1) Refer to Mandatory Continuing Airworthiness Information 
(MCAI) Canadian Airworthiness Directive CF-2014-01, dated January 3, 
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-2014-0491.
    (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 July 23, 2014.
John P. Piccola,
Acting Manager, Transport Airplane Directorate, Aircraft Certification 
Service.
[FR Doc. 2014-18401 Filed 8-1-14; 8:45 am]
BILLING CODE 4910-13-P
```