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2017-15-08 BOMBARDIER, INC.: Amendment 39-18968; Docket No. FAA-2017-0699; Directorate Identifier 2017-NM-004-AD.
(a) EFFECTIVE DATE

    This AD becomes effective September 5, 2017.

(b) AFFECTED ADS

    None.

(c) APPLICABILITY

    This AD applies to  Bombardier, Inc., Model CL-600-2E25  (Regional Jet
    Series 1000) airplanes, certificated  in any category, serial  numbers
    19001 through 19048 inclusive.

(d) SUBJECT

    Air Transport Association (ATA) of America Code 36, Pneumatic.

(e) REASON

    This AD was prompted by a report of a possibility that the shrouds  of
    the high pressure bleed air ducts could deteriorate and their  maximum
    permitted leakage rate  could be exceeded.  We are issuing  this AD to
    prevent a bleed air leak from exceeding the maximum permitted  leakage
    rate, which if not sensed by the detection system, could cause hot air
    impingement to damage the adjacent structure and system components  or
    create a fire hazard.

(f) COMPLIANCE

    Comply with this AD within the compliance times specified,  unless al-
    ready done.

(g) MODIFICATION

    At the earlier of the times specified in paragraphs (g)(1) and  (g)(2)
    of  this  AD:  Modify  the bleed-air  duct  and  detection  system, in
    accordance with the Accomplishment Instructions of Bombardier  Service
    Bulletin 670BA-36-022, Revision B, dated December 20, 2016.

(1) Within 6,600 flight hours or 32 months,  whichever  occurs first after
    the effective date of this AD.

(2) Within the next 10,000-flight-hours scheduled maintenance  check after
    the effective date of this AD.

(h) MAINTENANCE OR INSPECTION PROGRAM REVISION

    Within  30  days after  the  effective date  of  this AD:  Revise  the
    maintenance or inspection program, as applicable, by incorporating the
    service information specified in figure 1 to paragraph (h) of this AD.
    The initial compliance time for tasks 28-12-00-601 and 28-12-00-602 is
    at  the  later  of  the  applicable  times  specified  in  the service
    information specified  in figure  1 to  paragraph (h)  of this  AD, or
    within 30 days after the  effective date of this AD,  whichever occurs
    later. The initial compliance  times for tasks 25-85-00-101,  36-20-00
    -101, and 36-20-00-102 are specified  in Figure 2 to paragraph  (h) of
    this AD. When  these temporary revisions  (TRs) have been  included in
    general revisions  of the  maintenance requirement  manual (MRM),  the
    general revisions may  be inserted in  the MRM, provided  the relevant
    information in the general revision is identical to the TRs  specified
    in figure 1 to paragraph (h) of this AD.

    FIGURE 1 TO PARAGRAPH (H) OF THIS AD - TEMPORARY REVISIONS MAINTENANCE
                                           REQUIREMENTS                   
    ______________________________________________________________________
                                              MAINTENANCE
                                             REQUIREMENTS
    TEMPORARY REVISION        TASK NO.       MANUAL (MRM)    REVISION DATE
                                            PART 2 SECTION
    ______________________________________________________________________
    ALI-0553                25-85-00-101         1-25      August 19, 2016
    ALI-0554                36-20-00-101         1-36      August 19, 2016
    ALI-0555                36-20-00-102         1-36      August 19, 2016
    ALI-0556                28-12-00-601         4-28      August 19, 2016
    ALI-0557                28-12-00-602         4-28      August 19, 2016
    ______________________________________________________________________



       FIGURE 2 TO PARAGRAPH (H) OF THIS AD - INITIAL COMPLIANCE TIMES    
    ______________________________________________________________________
              TASK NO.                INITIAL COMPLIANCE TIME (WHICHEVER
                                                 OCCURS LATER)
                                    ______________________________________
           25-85-00-101             Before the            Within 30 days
                                     accumulation of       after the
                                     8,000 total           effective date
                                     flight hours.         of this AD.
           36-20-00-101             Before the            Within 30 days
                                     accumulation of       after the
                                     10,000 total          effective date
                                     flight hours.         of this AD.
           36-20-00-102             Before the            Within 30 days
                                     accumulation of       after the
                                     10,000 total          effective date
                                     flight hours.         of this AD.
    ______________________________________________________________________

(i) NO ALTERNATIVE ACTIONS OR INTERVALS

    After  the  maintenance or  inspection  program has  been  revised, as
    required by paragraph  (h) 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)(1)  of this
    AD.

(j) CREDIT FOR PREVIOUS ACTIONS

    This paragraph provides credit  for actions required by  paragraph (g)
    of this AD, if those actions were performed before the effective  date
    of this AD using  Bombardier Service Bulletin 670BA-36-022,  dated May
    30, 2016;  or Bombardier  Service Bulletin  670BA-36-022,  Revision A,
    dated September 16, 2016.

(k) OTHER FAA AD PROVISIONS

    The following provisions also apply to this AD:

(1) Alternative Methods of Compliance (AMOCs):  The Manager, New York Air-
    craft 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 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.

(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,  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.

(l) RELATED INFORMATION

(1) Refer   to   Mandatory  Continuing  Airworthiness  Information  (MCAI)
    Canadian Airworthiness Directive CF-2016-35,  dated November 16, 2016,
    for related information. You may  examine the MCAI on the  Internet at
    http://www.regulations.gov by  searching for  and locating  Docket No.
    FAA-2017-0699.

(2) For more information about this AD contact Joseph Catanzaro, Aerospace
    Engineer, Propulsion and Services Branch, ANE-173,  FAA, New York ACO,
    1600 Stewart Avenue, Suite 410, Westbury, NY 11590; telephone 516-228-
    7366; fax 516-794-5531.

(3) Service information  identified in this AD that is not incorporated by
    reference is available at the addresses specified in paragraphs (m)(3)
    and (m)(4) of this AD.

(m) MATERIAL INCORPORATED BY REFERENCE

(1) The  Director of the Federal Register  approved  the  incorporation by
    reference (IBR) of  the service information  listed in this  paragraph
    under 5 U.S.C. 552(a) and 1 CFR part 51.

(2) You must use this  service information as applicable to do the actions
    required by this AD, unless this AD specifies otherwise.

(i) Bombardier Service Bulletin 670BA-36-022,  Revision B,  dated December
    20, 2016.

(ii) Bombardier CRJ Series Regional Jet  Airworthiness Limitations Tempor-
     ary Revision ALI-0553, dated August 19, 2016.

(iii) Bombardier CRJ Series Regional Jet Airworthiness Limitations Tempor-
      ary Revision ALI-0554, dated August 19, 2016.

(iv) Bombardier CRJ Series Regional Jet  Airworthiness Limitations Tempor-
     ary Revision ALI-0555, dated August 19, 2016.

(v) Bombardier CRJ Series Regional Jet Airworthiness Limitations Temporary
    Revision ALI-0556, dated August 19, 2016.

(vi) Bombardier CRJ Series Regional Jet  Airworthiness Limitations Tempor-
     ary Revision ALI-0557, dated August 19, 2016.

(3) For  service information identified  in this AD,  contact  Bombardier,
    Inc.,  400 Cote-Vertu Road West, Dorval, Quebec H4S 1Y9, Canada; Wide-
    body Customer Response Center North America toll-free telephone 1-866-
    538-1247 or  direct-dial telephone 1-514-855-2999;  fax  514-855-7401;
    email ac.yul@aero.bombardier.com; Internet http://www.bombardier.com.

(4) 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.

(5) You  may  view  this  service  information  that  is  incorporated  by
    reference at the  National Archives and Records Administration (NARA).
    For information on the availability of this material at NARA, call 202
    -741-6030, or go to: http://www.archives.gov/federal-register/cfr/ibr-
    locations.html.

Issued in  Renton, Washington,  on July 13, 2017.  Dionne Palermo,  Acting
Manager, Transport Airplane Directorate, Aircraft Certification Service.

FOR FURTHER INFORMATION CONTACT:  Joseph  Catanzaro,  Aerospace  Engineer,
Propulsion and Services Branch, ANE-173, FAA, New York Aircraft Certifica-
tion Office (ACO),  1600 Stewart Avenue,  Suite  410,  Westbury, NY 11590;
telephone 516-228-7366; fax 516-794-5531.
PREAMBLE 

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2017-0699; Directorate Identifier 2017-NM-004-AD;
Amendment 39-18968; AD 2017-15-08]
RIN 2120-AA64

Airworthiness Directives; Bombardier, Inc., Airplanes

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Final rule; request for comments.

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

SUMMARY: We are adopting a new airworthiness directive (AD) for certain
Bombardier, Inc., Model CL-600-2E25 (Regional Jet Series 1000)
airplanes. This AD requires modifying the bleed-air duct and detection
system; and revising the maintenance or inspection program, as
applicable. This AD was prompted by a report of a possibility that the
shrouds of the high pressure bleed air ducts could deteriorate and
their maximum permitted leakage rate could be exceeded. We are issuing
this AD to address the unsafe condition on these products.

DATES: This AD becomes effective September 5, 2017.
The Director of the Federal Register approved the incorporation by
reference of certain publications listed in this AD as of September 5,
2017.
We must receive comments on this AD by October 2, 2017.

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 final rule, contact
Bombardier, Inc., 400 C[ocirc]te-Vertu Road West, Dorval, Qu[eacute]bec
H4S 1Y9, Canada; Widebody Customer Response Center North America toll-
free telephone 1-866-538-1247 or direct-dial telephone 1-514-855-2999;
fax 514-855-7401; email ac.yul@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. It is also available on the Internet at http://www.
regulations.gov by searching for and locating Docket No. FAA-2017-0699.

Examining the AD Docket

You may examine the AD docket on the Internet at http://www.regulations.
gov by searching for and locating Docket No. FAA-2017-
0699; 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 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: Joseph Catanzaro, Aerospace Engineer,
Propulsion and Services Branch, ANE-173, FAA, New York Aircraft
Certification Office (ACO), 1600 Stewart Avenue, Suite 410, Westbury,
NY 11590; telephone 516-228-7366; fax 516-794-5531.

SUPPLEMENTARY INFORMATION:

Discussion

Transport Canada Civil Aviation (TCCA), which is the aviation
authority for Canada, has issued Canadian Airworthiness Directive CF-
2016-35, dated November 16, 2016 (referred to after this as the
Mandatory Continuing Airworthiness Information, or ``the MCAI''), to
correct an unsafe condition for certain Bombardier, Inc., Model CL-600-
2E25 (Regional Jet Series 1000) airplanes. The MCAI states:

It is possible for the shrouds of the High Pressure (HP) bleed
air ducts located in the main wheel wells and overwing areas to
deteriorate and consequently, their maximum permitted leakage rate
could be exceeded. If a significant bleed air leak is not sensed by
the detection system, hot air impingement may cause damage to the
adjacent structure and system components or create a fire hazard.
This [Canadian] AD is issued to mandate a modification of the
bleed-air duct and detection system, as well as a revision of the
Airworthiness Limitation tasks to correspond with this modification.

You may examine the MCAI on the Internet at http://www.regulations.gov by
searching for and locating Docket No. FAA-2017-0699.

Related Service Information Under 1 CFR Part 51

Bombardier, Inc. has issued Bombardier Service Bulletin 670BA-36-
022, Revision B, dated December 20, 2016. The service information
describes modifying the bleed-air duct and detection system.
Bombardier, Inc. has issued the following service information.
Bombardier CRJ Series Regional Jet Airworthiness
Limitations Temporary Revision ALI-0553, dated August 19, 2016, which
describes an airworthiness limitation task for a detailed inspection of
the protection jackets (shields) and insulating blankets located on top
of the center wing and fuel tank and fuel vent lines for condition and
security.
Bombardier CRJ Series Regional Jet Airworthiness
Limitations Temporary Revision ALI-0554, dated August 19, 2016, which
describes an airworthiness limitation task for a functional check of
the bleed air duct shrouds.
Bombardier CRJ Series Regional Jet Airworthiness
Limitations Temporary Revision ALI-0555, dated August 19, 2016, which
describes an airworthiness limitation task for a detailed inspection of
the bleed air duct coupling covers and detection manifolds.
Bombardier CRJ Series Regional Jet Airworthiness
Limitations Temporary Revision ALI-0556, dated August 19, 2016, which
describes an airworthiness limitation task for a detailed inspection of
the overwing shield and the protection jackets for condition and
security.
Bombardier CRJ Series Regional Jet Airworthiness
Limitations Temporary Revision ALI-0557, dated August 19, 2016, which
describes an airworthiness limitation task for a detailed inspection of
the vent boot protection jackets for condition and security.
This service information is reasonably available because the
interested parties have access to it through their normal course of
business or by the means identified in the ADDRESSES section.

FAA's Determination and Requirements of This 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 issuing this AD because we
evaluated all pertinent information and determined the unsafe condition
exists and is likely to exist or develop on other products of the same
type design.
This AD requires revisions to certain operator maintenance
documents to include new actions (e.g., inspections). Compliance with
these actions is required by 14 CFR 91.403(c). For airplanes that have
been previously modified, altered, or repaired in the areas addressed
by this 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)(1) of this AD. The request
should include a description of changes to the required inspections
that will ensure the continued operational safety of the airplane.

FAA's Determination of the Effective Date

Since there are currently no domestic operators of this product,
notice and opportunity for public comment before issuing this AD are
unnecessary.

Comments Invited

This AD is a final rule that involves requirements affecting flight
safety, and we did not precede it by notice and opportunity for public
comment. We invite you to send any written relevant data, views, or
arguments about this AD. Send your comments to an address listed under
the ADDRESSES section. Include ``Docket No. FAA-2017-0699; Directorate
Identifier 2017-NM-004-AD'' at the beginning of your comments. We
specifically invite comments on the overall regulatory, economic,
environmental, and energy aspects of this AD. We will consider all
comments received by the closing date and may amend this 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 AD.

Costs of Compliance

We estimate that this AD affects 0 airplanes of U.S. registry.
We also estimate that it will take about 91 work-hours per product
to comply with the basic requirements of this AD. The average labor
rate is $85 per work-hour. Required parts cost are not available. Based
on these figures, we estimate the cost of this AD on U.S. operators to
be $0, or $7,735 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 AD will not have federalism implications
under Executive Order 13132. This AD will not have a substantial direct
effect on the States, on the relationship between the national
government and the States, or on the distribution of power and
responsibilities among the various levels of government.
For the reasons discussed above, I certify that this AD:
1. Is not a ``significant regulatory action'' under Executive Order
12866;
2. Is not a ``significant rule'' under the DOT Regulatory Policies
and Procedures (44 FR 11034, February 26, 1979);
3. Will not affect intrastate aviation in Alaska; and
4. Will not have a significant economic impact, positive or
negative, on a substantial number of small entities under the criteria
of the Regulatory Flexibility Act.

List of Subjects in 14 CFR Part 39

Air transportation, Aircraft, Aviation safety, Incorporation by
reference, Safety.

Adoption of the Amendment

Accordingly, under the authority delegated to me by the
Administrator, the FAA amends 14 CFR part 39 as follows:

PART 39--AIRWORTHINESS DIRECTIVES

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]

2. The FAA amends Sec. 39.13 by adding the following new airworthiness
directive (AD):