Document ID: FAA-2012-1075-0006
Agency: faa
Document Type: Proposed Rule
Title: Airworthiness Directives: Bombardier, Inc. Airplanes
Posted Date: 2015-10-27T04:00Z

[Federal Register Volume 80, Number 207 (Tuesday, October 27, 2015)]
[Proposed Rules]
[Pages 65666-65670]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2015-27267]

 ========================================================================
 Proposed Rules
                                                 Federal Register
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 This section of the FEDERAL REGISTER contains notices to the public of 
 the proposed issuance of rules and regulations. The purpose of these 
 notices is to give interested persons an opportunity to participate in 
 the rule making prior to the adoption of the final rules.
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  Federal Register / Vol. 80, No. 207 / Tuesday, October 27, 2015 / 
Proposed Rules  

[[Page 65666]]

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2012-1075; Directorate Identifier 2012-NM-111-AD]
RIN 2120-AA64

Airworthiness Directives; Bombardier, Inc. Airplanes

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Supplemental notice of proposed rulemaking (NPRM); reopening of 
comment period.

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

SUMMARY: We are revising an earlier proposed airworthiness directive 
(AD) for certain Bombardier, Inc. Model CL-600-2B19 (Regional Jet 
Series 100 & 440) airplanes. The NPRM proposed to require revising the 
maintenance or inspection program to incorporate revised tasks 
specified in certain temporary revisions (TRs) to the airplane 
airworthiness limitations (AWLs). The NPRM was prompted by the need for 
more stringent inspection requirements for certain affected components. 
This action revises the NPRM by proposing to require revising the 
maintenance or inspection program to incorporate certain revised AWL 
tasks instead of TRs, and by proposing to require repairs of affected 
components. We are proposing this supplemental NPRM (SNPRM) to detect 
and correct fatigue cracking in the affected components, which could 
result in loss of structural integrity. Since these actions impose an 
additional burden over those proposed in the NPRM, we are reopening the 
comment period to allow the public the chance to comment on these 
proposed changes.

DATES: We must receive comments on this SNPRM by December 11, 2015.

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-2012-
1075; 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 
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: Jeffrey Zimmer, Aerospace Engineer, 
Airframe and Mechanical Systems Branch, ANE-171, FAA, New York Aircraft 
Certification Office, 1600 Stewart Avenue, Suite 410, Westbury, NY 
11590; telephone 516-228-7306; 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-2012-1075; 
Directorate Identifier 2012-NM-111-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

    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-600-2B19 (Regional Jet Series 100 & 440) airplanes. The NPRM 
published in the Federal Register on October 16, 2012 (77 FR 63282). 
The NPRM was prompted by a revision to the airplane AWLs to introduce 
more stringent inspection requirements on certain affected components. 
The NPRM proposed to require revising the maintenance or inspection 
program to incorporate revised AWL tasks specified in certain TRs.

Actions Since Previous NPRM (77 FR 63282, October 16, 2012) Was Issued

    Since we issued the NPRM (77 FR 63282, October 16, 2012), we have 
determined that a repair requirement should be added to this SNPRM to 
correct fatigue cracking in the affected components.

Related Service Information Under 1 CFR Part 51

    Bombardier Inc. has issued the following AWLs.
     AWL 52-11-131, ``Passenger door--piano hinge half on door 
side,'' of Appendix B--Airworthiness Limitations, of Part 2 
Airworthiness Requirements, Revision 9, dated June 10, 2013, of the 
Bombardier CL-600-2B19 Maintenance Requirements Manual (MRM) CSP A-053. 
This AWL describes procedures for a detailed visual inspection of the 
piano hinge half on the passenger door side.
     AWL 53-11-122, ``Windshield center post and bulkhead aft 
post at FS202.75,'' of Appendix B--

[[Page 65667]]

Airworthiness Limitations, of Part 2 Airworthiness Requirements, 
Revision 9, dated June 10, 2013, of the Bombardier CL-600-2B19 MRM CSP 
A-053. This AWL describes procedures for a special detailed inspection 
of the windshield center post and bulkhead aft post at fuselage station 
(FS) 202.75.
     AWL 53-21-118, ``Potable water servicing door cut-out and 
internal structure,'' of Appendix B--Airworthiness Limitations, of Part 
2 Airworthiness Requirements, Revision 9, dated June 10, 2013, of the 
Bombardier CL-600-2B19 MRM CSP A-053. This AWL describes procedures for 
a detailed visual inspection of the potable water servicing door cut-
out and internal structure.
     AWL 53-21-129, ``Passenger door--piano hinge half on 
fuselage side,'' of Appendix B--Airworthiness Limitations, of Part 2 
Airworthiness Requirements, Revision 9, dated June 10, 2013, of the 
Bombardier CL-600-2B19 MRM CSP A-053. This AWL describes procedures for 
a detailed visual inspection of the piano hinge half of the passenger 
door on the fuselage side.
     AWL 53-41-199, ``FS409.0 +128 vertical posts at BL0.0 and 
BL18.0 left and right local to WL69.0,'' of Appendix B--Airworthiness 
Limitations, of Part 2 Airworthiness Requirements, Revision 9, dated 
June 10, 2013, of the Bombardier CL-600-2B19 MRM CSP A-053. This AWL 
describes procedures for a special detailed inspection of the FS409.0 
+128 left and right vertical posts at buttock line (BL) 0.0 and BL18.0 
local to water line (WL) 69.0.
     AWL 53-41-200, ``FS409.0 +128 frame cap aft and fwd splice 
angles at STR21 left and right,'' of Appendix B--Airworthiness 
Limitations, of Part 2 Airworthiness Requirements, Revision 9, dated 
June 10, 2013, of the Bombardier CL-600-2B19 MRM CSP A-053. This AWL 
describes procedures for a detailed visual inspection of the FS409.0 
+128 frame cap aft and forward splice angles at stringer 21.
     AWL 53-41-201, ``FS559.0 pressure bulkhead web and cap 
angle local to BL9.0 and BL18.0 left and right,'' of Appendix B--
Airworthiness Limitations, of Part 2 Airworthiness Requirements, 
Revision 9, dated June 10, 2013, of the Bombardier CL-600-2B19 MRM CSP 
A-053. This AWL describes procedures for a special detailed inspection 
of the left and right FS559.0 pressure bulkhead web and cap angle local 
to BL9.0 and BL18.0.
     AWL 53-61-156, ``Rear pressure bulkhead forward face below 
floor,'' of Appendix B--Airworthiness Limitations, of Part 2 
Airworthiness Requirements, Revision 9, dated June 10, 2013, of the 
Bombardier CL-600-2B19 MRM CSP A-053. This AWL describes procedures for 
a special detailed inspection of the below floor forward face of the 
rear pressure bulkhead.
     AWL 54-10-105, ``Pylon track and support fitting,'' of 
Appendix B--Airworthiness Limitations, of Part 2 Airworthiness 
Requirements, Revision 9, dated June 10, 2013, of the Bombardier CL-
600-2B19 MRM CSP A-053. This AWL describes procedures for a special 
detailed inspection of the pylon track and support fitting.
     AWL 54-10-106, ``Pylon track and support fitting,'' of 
Appendix B--Airworthiness Limitations, of Part 2 Airworthiness 
Requirements, Revision 9, dated June 10, 2013, of the Bombardier CL-
600-2B19 MRM CSP A-053. This AWL describes procedures for a special 
detailed inspection of the pylon track and support fitting.
     AWL 57-21-105, ``Lower wing skin, between BL0.0 to wing 
station (WS) 314.0,'' of Appendix B--Airworthiness Limitations, of Part 
2 Airworthiness Requirements, Revision 9, dated June 10, 2013, of the 
Bombardier CL-600-2B19 MRM CSP A-053. This AWL describes procedures for 
a detailed visual inspection of the lower wing skin, between BL0.0 to 
WS314.0.
     AWL 57-21-112, ``Lower wing plank splice joints at BL45.0, 
WS65.75, and WS148.0,'' of Appendix B--Airworthiness Limitations, of 
Part 2 Airworthiness Requirements, Revision 9, dated June 10, 2013, of 
the Bombardier CL-600-2B19 MRM CSP A-053. This AWL describes procedures 
for a special detailed inspection of the lower wing plank splice joints 
at BL45.0, WS65.75, and WS148.0.
    This service information is reasonably available because the 
interested parties have access to it through their normal course of 
business or by the means identified in the ADDRESSES section of this 
SNPRM.

Comments

    We gave the public the opportunity to participate in developing 
this proposed AD. We considered the comments received.

Requests To Reduce the Number of Inspections

    Skywest Airlines (Skywest) and Expressjet Airlines (Expressjet) 
requested that we reduce the number of inspections proposed by the NPRM 
(77 FR 63282, October 16, 2012) by specifying the AWLs in lieu of the 
TRs referenced in the NPRM. Skywest and Expressjet stated that many of 
the TRs have already been incorporated into the maintenance program; 
the proposed requirements would therefore create difficulty in tracking 
TRs for compliance because of the many anticipated alternative methods 
of compliance (AMOCs) that would be needed. Expressjet stated that the 
large number of proposed inspections will create a significant burden 
on the operator.
    Bombardier requested that we specify the AWLs and cited an example 
of two TRs issued for the same AWL.
    Air Wisconsin (AWI) provided specific references to TRs that have 
been superseded by subsequently published TRs and requested that we 
revise the NPRM (77 FR 63282, October 16, 2012) to reference revised 
TRs that address the identified AWLs.
    We agree with the commenters' requests to specify the AWLs instead 
of the TRs. The entirety of each TR does not need to be mandated. By 
specifying the AWLs, we also eliminate AWI's concern over TRs that have 
been superseded. We have revised paragraph (g) of this SNPRM to remove 
the TRs and specify the AWLs that we propose to be incorporated into 
the maintenance or inspection program, as applicable.

Request To Change Compliance Times for Tasks Without Phase-in Schedules

    AWI requested that, for those tasks without specific phase-in 
schedules, we change the compliance times to the times specified in the 
applicable TR, or ``within 1,000 flight cycles after the effective date 
of this AD,'' whichever occurs later. AWI stated that although most of 
the tasks have phase-in schedules, some do not; therefore, the ability 
to perform these tasks on an entire fleet within the 60 days specified 
in the NPRM (77 FR 63282, October 16, 2012) may not be realistic.
    We agree with the commenter's request to specify phase-in schedules 
for the AWL tasks without specific phase-in schedules. As stated 
previously, we revised paragraph (g) of this SNPRM to reference the 
AWLs in lieu of the TRs. We revised paragraph (h) of this SNPRM to 
specify where to locate compliance times for tasks with phase-in 
schedules and for those without phase-in schedules. In addition, new 
paragraph (h)(2) of this SNPRM provides a grace period of ``within 
1,000 flight cycles after the effective date of this AD.''

Requests Regarding Previously Approved Repairs

    AWI requested that we approve AMOCs for the intervals and/or 
methods contained in technical repair data, e.g., repair engineering 
orders

[[Page 65668]]

(REOs) or generic repair engineering orders (GREOs) that have been 
approved previously by Transport Canada Civil Aviation (TCCA). AWI 
stated that many of these TCCA-approved REOs or GREOs have alternative 
inspection intervals that differ from the applicable AWL tasks stated 
in the TRs or the tasks contained within Appendix B--Airworthiness 
Limitations, of Part 2, Airworthiness Requirements, of the Bombardier 
CL-600-2B19 MRM CSP A-053.
    Skywest and Expressjet requested that we allow previous AWL task 
repairs that have been approved by Bombardier, Inc.'s TCCA Design 
Approval Organization (DAO) in the inspection areas. Skywest and 
Expressjet stated that this will reduce the number of AMOCs needed for 
previous repairs.
    We agree with the commenters' requests regarding previously 
approved repairs. We agree to include a provision in this SNPRM to 
allow for previously approved repairs in the inspection area that were 
approved by the Manager, New York Aircraft Certification Office, ANE-
170, FAA; or TCCA; or Bombardier, Inc.'s TCCA DAO. We have added this 
provision in paragraph (k) of this SNPRM.

Request To Use Future Revisions of AWLs

    Expressjet requested that we allow the use of future revisions of 
the identified AWL tasks, provided they are approved by TCCA.
    We disagree to allow the use of future revisions of the identified 
AWL tasks as a method of compliance with this SNPRM. When referring to 
a specific document in an AD, using the phrase ``or later approved 
revisions'' violates Office of the Federal Register (OFR) regulations 
for approving materials that are incorporated by reference in rules. 
See 1 CFR 51.1(f). In general terms, we are required by these OFR 
regulations to either publish the service document contents as part of 
the actual AD language, or submit the service document to the OFR for 
approval as ``referenced'' material. In the latter case, we may only 
refer to such material in the text of an AD; the AD may refer to the 
service document only if the OFR approved it for incorporation by 
reference.
    To allow operators to use later revisions of the referenced 
document (issued after publication of the AD), either we must revise 
the AD to reference specific later revisions, or operators must request 
approval to use later revisions as an AMOC under the provisions of 
paragraph (k) of this SNPRM. Therefore, affected operators may request 
approval to use a later revision of the referenced AWL tasks as an AMOC 
using the procedures specified in paragraph (k) of this SNPRM provided 
an adequate level of safety is maintained. We have not changed this 
SNPRM in this regard.

Request To Permit Removal of TR From Bombardier CL-600-2B19 MRM

    Skywest requested that we permit removal of the TR when the 
required maintenance action is incorporated into an MRM revision. 
Skywest stated that referring to each TR becomes problematic because a 
standard revision of the MRM, when published, states that the 
incorporated TRs are to be removed and discarded.
    As stated previously, we have revised paragraph (g) of this SNPRM 
to remove the TRs and specify the AWLs that we propose to be 
incorporated into the maintenance or inspection program, as applicable. 
Therefore, it is unnecessary to change this SNPRM in this regard.

FAA's Determination and Requirements of This SNPRM

    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.
    Certain changes described above expand the scope of the NPRM (77 FR 
63282, October 16, 2012). As a result, we have determined that it is 
necessary to reopen the comment period to provide additional 
opportunity for the public to comment on this SNPRM.
    This SNPRM proposes to require revisions to certain operator 
maintenance documents to include new inspections. Compliance with these 
inspections is required by section 91.403(c) of the Federal Aviation 
Regulations (14 CFR 91.403(c)). For airplanes that have been previously 
modified, altered, or repaired in the areas addressed by these 
inspections, an operator might not be able to accomplish the 
inspections described in the revisions. In this situation, to comply 
with 14 CFR 91.403(c), the operator must request approval of an AMOC in 
accordance with the provisions of paragraph (k) of this SNPRM. The 
request should include a description of changes to the required 
inspections that will ensure the continued damage tolerance of the 
affected structure.

Costs of Compliance

    We estimate that this SNPRM affects 575 airplanes of U.S. registry.
    We estimate that it would take about 1 work-hour per product to 
comply with the requirements of this SNPRM. The average labor rate is 
$85 per work-hour. Based on these figures, we estimate the cost of this 
SNPRM on U.S. operators to be $48,875, or $85 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 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.

[[Page 65669]]

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-2012-1075; Directorate Identifier 
2012-NM-111-AD.

(a) Comments Due Date

    We must receive comments by December 11, 2015.

(b) Affected ADs

    None.

(c) Applicability

    This AD applies to Bombardier, Inc. Model CL-600-2B19 (Regional 
Jet Series 100 & 440) airplanes, certificated in any category, 
serial numbers 7003 and subsequent.

(d) Subject

    Air Transport Association (ATA) of America Code 05, Periodic 
inspections.

(e) Reason

    This AD was prompted by a revision to the airplane airworthiness 
limitations (AWLs) to introduce more stringent inspection 
requirements on certain affected components. We are issuing this AD 
to detect and correct fatigue cracking in the affected components 
and consequent loss of structural integrity.

(f) Compliance

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

(g) Maintenance Program or Inspection Program Revision

    Within 60 days after the effective date of this AD: Revise the 
maintenance or inspection program, as applicable, to incorporate the 
revised inspection requirements specified in the AWLs identified in 
paragraphs (g)(1) through (g)(12) of this AD.
    (1) AWL 52-11-131, ``Passenger door--piano hinge half on door 
side,'' of Appendix B--Airworthiness Limitations, of Part 2, 
Airworthiness Requirements, Revision 9, dated June 10, 2013, of the 
Bombardier CL-600-2B19 Maintenance Requirements Manual (MRM) CSP A-
053.
    (2) AWL 53-11-122, ``Windshield center post and bulkhead aft 
post at FS202.75,'' of Appendix B--Airworthiness Limitations, of 
Part 2, Airworthiness Requirements, Revision 9, dated June 10, 2013, 
of the Bombardier CL-600-2B19 MRM CSP A-053.
    (3) AWL 53-21-118, ``Potable water servicing door cut-out and 
internal structure,'' of Part 2, Airworthiness Requirements, 
Revision 9, dated June 10, 2013, of the Bombardier CL-600-2B19 MRM 
CSP A-053.
    (4) AWL 53-21-129, ``Passenger door--piano hinge half on 
fuselage side,'' of Appendix B--Airworthiness Limitations, of Part 
2, Airworthiness Requirements, Revision 9, dated June 10, 2013, of 
the Bombardier CL-600-2B19 MRM CSP A-053.
    (5) AWL 53-41-199, ``FS409.0 + 128 vertical posts at BL0.0 and 
BL18.0 left and right local to WL69.0,'' of Appendix B--
Airworthiness Limitations, of Part 2, Airworthiness Requirements, 
Revision 9, dated June 10, 2013, of the Bombardier CL-600-2B19 MRM 
CSP A-053.
    (6) AWL 53-41-200, ``FS409.0 + 128 frame cap aft and fwd splice 
angles at STR21 left and right,'' of Appendix B--Airworthiness 
Limitations, of Part 2, Airworthiness Requirements, Revision 9, 
dated June 10, 2013, of the Bombardier CL-600-2B19 MRM CSP A-053.
    (7) AWL 53-41-201, ``FS559.0 pressure bulkhead web and cap angle 
local to BL9.0 and BL18.0 left and right,'' of Appendix B--
Airworthiness Limitations, of Part 2, Airworthiness Requirements, 
Revision 9, dated June 10, 2013, of the Bombardier CL-600-2B19 MRM 
CSP A-053.
    (8) AWL 53-61-156, ``Rear pressure bulkhead forward face below 
floor,'' of Appendix B--Airworthiness Limitations, of Part 2, 
Airworthiness Requirements, Revision 9, dated June 10, 2013, of the 
Bombardier CL-600-2B19 MRM CSP A-053.
    (9) AWL 54-10-105, ``Pylon track and support fitting,'' of 
Appendix B--Airworthiness Limitations, of Part 2, Airworthiness 
Requirements, Revision 9, dated June 10, 2013, of the Bombardier CL-
600-2B19 MRM CSP A-053.
    (10) AWL 54-10-106, ``Pylon track and support fitting,'' of 
Appendix B--Airworthiness Limitations, of Part 2, Airworthiness 
Requirements, Revision 9, dated June 10, 2013, of the Bombardier CL-
600-2B19 MRM CSP A-053.
    (11) AWL 57-21-105, ``Lower wing skin, between BL0.0 to 
WS314.0,'' of Appendix B--Airworthiness Limitations, of Part 2, 
Airworthiness Requirements, Revision 9, dated June 10, 2013, of the 
Bombardier CL-600-2B19 MRM CSP A-053.
    (12) AWL 57-21-112, ``Lower wing plank splice joints at BL45.0, 
WS65.75, and WS148.0,'' of Appendix B--Airworthiness Limitations, of 
Part 2, Airworthiness Requirements, Revision 9, dated June 10, 2013, 
of the Bombardier CL-600-2B19 MRM CSP A-053.

(h) Initial Compliance Times for AWL Tasks

    (1) For tasks with phase-in schedules specified in the AWLs 
identified in paragraphs (g)(1) through (g)(12) of this AD: The 
initial compliance times are at the applicable times specified in 
the applicable AWL, or within 60 days after the effective date of 
this AD, whichever occurs later, except as specified in paragraph 
(h)(2) of this AD.
    (2) For tasks with no phase-in schedules specified in the AWLs 
identified in paragraphs (g)(1) through (g)(12) of this AD: The 
initial compliance times are at the applicable times specified in 
Appendix B--Airworthiness Limitations, of Part 2, Airworthiness 
Requirements, Revision 9, dated June 10, 2013, of the Bombardier CL-
600-2B19 MRM CSP A-053, or within 1,000 flight cycles after the 
effective date of this AD, whichever occurs later.

(i) Corrective Action

    If any damage (including, but not limited to, cracking, 
corrosion, and wear) is found during any inspection required by any 
AWL specified in paragraph (g) of this AD: Before further flight, 
repair using a method approved by the Manager, New York Aircraft 
Certification Office (ACO), ANE-170, FAA; or Transport Canada Civil 
Aviation (TCCA); or Bombardier, Inc.'s TCCA Design Approval 
Organization (DAO).

(j) No Alternative Actions or Intervals

    After accomplishing the revisions required by paragraph (g) of 
this AD, no alternative actions (e.g., inspections) or intervals may 
be used other than those specified in the AWLs identified in 
paragraphs (g)(1) through (g)(12) of this AD; unless the actions and 
intervals are approved as an alternative method of compliance (AMOC) 
in accordance with the procedures specified in paragraph (k) of this 
AD, or the actions and intervals are approved as part of a repair 
specified in paragraph (i) 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 appropriate. 
If sending information directly to the manager of 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) Previously Approved Repairs: Repairs approved before the 
effective date of this AD that meet the conditions specified in 
paragraphs (k)(2)(i), (k)(2)(ii), and (k)(2)(iii) of this AD are 
acceptable methods of compliance for the repaired area.
    (i) The repairs were accomplished using a method approved by the 
Manager, New York ACO, ANE-170, FAA; or TCCA; or Bombardier, Inc.'s 
TCCA DAO.
    (ii) The repair approval refers to MCAI Canadian Airworthiness 
Directive CF-2012-13, dated April 10, 2012, and provides an 
inspection program (inspection threshold, method, and repetitive 
interval).
    (iii) The operator has revised its maintenance or inspection 
program, as

[[Page 65670]]

applicable, to include the inspection program (inspection threshold, 
method, and repetitive interval) for the repair.
    (3) 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, FAA; or TCCA; or Bombardier, Inc.'s TCCA 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-2012-13, dated April 10, 
2012, for related information. You may examine the MCAI in the AD 
docket on the Internet at http://www.regulations.gov/#!documentDetail;D=FAA-2013-0597-0002.
    (2) For service information identified in this AD, contact 
Bombardier, Inc., 400 C[ocirc]te-Vertu Road West, Dorval, 
Qu[eacute]bec H4S 1Y9, Canada; telephone 514-855-5000; fax 514-855-
7401; email thd.crj@aero.bombardier.com; Internet http://www.bombardier.com. You may view this service information at the 
FAA, Transport Airplane Directorate, 1601 Lind Avenue SW., Renton, 
WA. For information on the availability of this material at the FAA, 
call 425-227-1221.

    Issued in Renton, Washington, on October 6, 2015.
Jeffrey E. Duven,
Manager, Transport Airplane Directorate, Aircraft Certification 
Service.
[FR Doc. 2015-27267 Filed 10-26-15; 8:45 am]
 BILLING CODE 4910-13-P