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2009-22-05 BOMBARDIER, INC.: Amendment 39-16056. Docket No. FAA-2009-0656; Directorate Identifier 2009-NM-038-AD.
EFFECTIVE DATE

(a) This airworthiness directive (AD) becomes effective April 15, 2010.

AFFECTED ADS

(b) This AD supersedes AD 2008-23-16, Amendment 39-15737.

APPLICABILITY

(c) This AD  applies to Bombardier,  Inc. Model CL-600-2B19  (Regional Jet
    Series  100 &  440) airplanes,  certificated in  any category;  serial
    numbers  (S/Ns)  7003  through  7067  inclusive,  7069  through   7990
    inclusive, 8000 through 8076 inclusive, 8082, 8086, 8090 through  8092
    inclusive, 8096, and 8097.

SUBJECT

(d) Air Transport  Association (ATA)  of America  Code 30:  Ice  and  rain
    protection.

REASON

(e) The mandatory continuing airworthiness information (MCAI) states:

    "There have been several cases  of wing leading edge anti-ice  piccolo
    duct   failure   reported   on   CL-600-2B19   (CRJ)   aircraft.  Upon
    investigation, it  was determined  that ducts  manufactured since  May
    2000 are  susceptible to  cracking due  to the  process used  to drill
    holes  in the  ducts. This  cracking may  cause air  leakage,  with  a
    possible adverse effect on  the anti-ice air distribution  pattern and
    anti-ice  capability, without  annunciation  to  the flight  crew [and
    consequent reduced controllability of the airplane].

    The faulty ducts were installed  on aircraft SN 7417 through  7990 and
    8000  through  8055 in  production,  and as  replacement  parts on  in
    service aircraft SN  7014, 7017, 7037,  7046, 7059, 7076,  7105, 7127,
    7151, 7157, 7163, 7179, 7203,  7228, 7271, 7347, 7359, 7362,  7378 and
    7381. Service  Bulletin (SB)  601R-30-029, Revision  B and  AD CF-2005
    -26R1 previously covered the above aircraft serial numbers.

    It has subsequently  been determined that  faulty ducts may  also have
    been installed in a number of leading edge assemblies built as  spares
    and whose current  locations are not  specifically known. As  they may
    have  been installed  on any  of the  aircraft serial  numbers in  the
    Applicability section  of this  directive, checking  of records and/or
    inspection * * * is now required for all applicable aircraft.

    "This directive, which supersedes  and cancels AD CF-2005-26R1  [which
    corresponds to  FAA AD  2005-17-12, amendment  39-14223], mandates the
    amendment of the Airplane Flight Manual (AFM) procedures, in  addition
    to checking the part numbers and serial numbers of installed and spare
    wing anti-ice piccolo ducts, as required, and inspecting, replacing or
    repairing them as necessary. Terminating action is also introduced."

    Required  actions  include   revising  the  airplane   flight  manual,
    inspecting  to  determine  if  certain  anti-ice  piccolo  ducts   are
    installed, and replacing or repairing the piccolo duct if necessary.

RESTATEMENT OF REQUIREMENTS OF AD 2005-17-12

IDENTIFICATION OF AFFECTED PICCOLO TUBES

(f) Unless already done, for airplanes having S/Ns 7013, 7017, 7037, 7046,
    7059, 7076,  7105, 7127,  7151, 7157,  7163, 7174,  7179, 7203,  7204,
    7228,  7271,  7347,  7362, 7378,  7417  through  7990 inclusive,  8000
    through 8076 inclusive, 8082, 8086, 8090 through 8092 inclusive,  8096
    and 8097: Before the airplane accumulates 3,000 total flight hours, or
    within 14 days after September 7, 2005 (the effective date of AD  2005
    -17-12,  which  was  superseded by  AD  2008-23-16),  whichever occurs
    later, determine whether any affected piccolo tube is installed on the
    airplane. Affected piccolo tubes  are identified in paragraph  1.A. of
    Bombardier Service  Bulletin 601R-30-029,  Revision A,  dated July  7,
    2005. Doing the  action required by  paragraph (p), (q),  (r), (w), or
    (y) of this AD terminates the requirements of this paragraph.

REVISION TO AIRPLANE FLIGHT MANUAL (AFM)

(g) Unless already done, for airplanes with an affected or  unidentifiable
    piccolo tube found during the action required by paragraph (f) of this
    AD:  Before  the airplane  accumulates  3,000 total  flight  hours, or
    within 14 days after September 7, 2005, whichever occurs later, revise
    the  Operating Limitations  and  Abnormal  Procedures sections  of the
    Canadair Regional Jet  AFM, CSP A-012,  to include the  information in
    Canadair  Temporary  Revision  (TR) RJ/155,  dated  July  5, 2005,  as
    specified in the TR.  This may be done  by inserting a copy  of the TR
    into the AFM. This TR introduces new procedures for operation in icing
    conditions.  Operate the  airplane according  to  the  limitations and
    procedures in the TR except as  required by paragraph (n) of this  AD.
    When this TR has  been included in general  revisions of the AFM,  the
    general revisions may  be inserted in  the AFM, provided  the relevant
    information in the  general revision is  identical to that  in the TR.
    After the AFM revision required by  paragraph (n) of this AD has  been
    done, remove the AFM limitation specified in this paragraph.

OPTIONAL INSPECTIONS

(h) Unless already done, for airplanes with an affected or  unidentifiable
    piccolo tube found during the action required by paragraph (f) of this
    AD: The  operating limitations  and abnormal  procedures specified  in
    Canadair TR RJ/155, dated July  5, 2005, as required by  paragraph (g)
    of this AD, may be removed from the AFM, provided all requirements  of
    this paragraph have been satisfied.

(1) A fluorescent dye penetrant inspection for cracks of the piccolo tubes
    is done and repeated thereafter within 2,000-flight-hour intervals  in
    accordance with the Accomplishment Instructions of Bombardier  Service
    Bulletin 601R-30-029, Revision  A, dated July  7, 2005. An  inspection
    done before September 7,  2005, in accordance with  Bombardier Service
    Bulletin  601R-30-029,  dated  June   17,  2005,  is  acceptable   for
    compliance with the requirements of paragraph (h)(1) of this AD. Doing
    the inspection  required by  paragraph (u)  of this  AD terminates the
    actions required by this paragraph.

(2) All applicable corrective actions  are done as specified in  paragraph
    (j) of this AD.

AFM LIMITATIONS REQUIRED FOR EXCEEDING INSPECTION INTERVAL

(i) Unless already done, for airplanes having S/Ns 7013, 7017, 7037, 7046,
    7059, 7076,  7105, 7127,  7151, 7157,  7163, 7174,  7179, 7203,  7204,
    7228,  7271,  7347,  7362, 7378,  7417  through  7990 inclusive,  8000
    through 8076 inclusive, 8082, 8086, 8090 through 8092 inclusive,  8096
    and 8097: During any period  in which the inspection interval  exceeds
    2,000 flight hours after the initial inspection specified in paragraph
    (h)(1) of this AD, the airplane must be operated under the limitations
    and abnormal procedures specified in  paragraph (g) of this AD.  Doing
    the action required by paragraph (p), (q), (r), (w), or (y) of this AD
    terminates the requirements of this paragraph.

CORRECTIVE ACTION

(j) Unless already  done,  if  any crack  is found  during any  inspection
    required by paragraph  (h) of this  AD: Before further  flight, do the
    actions  specified in  paragraph (j)(1),  (j)(2), (j)(3),  (j)(4),  or
    (j)(5) of this AD, except as required by paragraph (k) of this AD.

(1) Replace   the   cracked  piccolo   tube,   in   accordance  with   the
    Accomplishment  Instructions  of Bombardier  Service  Bulletin 601R-30
    -029, Revision A, dated July 7, 2005, with a new piccolo tube that has
    the same  part number  as identified  in paragraph  1.A. of Bombardier
    Service Bulletin 601R-30-029, Revision A, dated July 7, 2005, but that
    does not have a serial number listed in that paragraph.

(2) Replace   the   cracked  piccolo   tube,   in   accordance  with   the
    Accomplishment  Instructions  of Bombardier  Service  Bulletin 601R-30
    -029, Revision A, dated July 7, 2005, with a new piccolo tube that has
    a  part number  identified  in  the applicable  Bombardier illustrated
    parts  catalog but  not identified  in paragraph   1.A. of  Bombardier
    Service Bulletin 601R-30-029,  Revision A, dated July 7, 2005, or with
    a new piccolo tube identified in paragraph (l) of this AD.

(3) Replace  the    cracked  piccolo   tube,   in   accordance  with   the
    Accomplishment  Instructions  of Bombardier  Service  Bulletin 601R-30
    -029, Revision A,  dated July 7,  2005, with a  piccolo tube that  has
    been inspected in accordance  with the Accomplishment Instructions  of
    Bombardier Service  Bulletin 601R-30-029,  Revision A,  dated July  7,
    2005, is  not cracked,  and has  not accumulated  any air  time (hours
    time-in-service) since inspection.

(4) Replace the  cracked piccolo tube  with a piccolo  tube that has  been
    repaired in accordance with a  method approved by either the  Manager,
    New  York  Aircraft  Certification  Office  (ACO),  ANE-172,  FAA;  or
    Transport Canada Civil Aviation  (TCCA) (or its delegated  agent); and
    has not  accumulated any  air time  (hours time-in-service)  since the
    repair.

(5) Reinstall  the  cracked  piccolo tube  and  operate  the  airplane  in
    accordance with a method approved by either the Manager, New York ACO,
    or TCCA (or its delegated agent).

NOTE 1:  Guidance on  operating the  airplane under  certain conditions in
accordance with the provisions of the Master Minimum Equipment List (MMEL)
can be found in MMEL Entry 30-12-03.

EXCEPTION TO SERVICE BULLETIN PROCEDURES

(k) Unless already done:  Where  Bombardier Service Bulletin  601R-30-029,
    Revision  A,  dated  July 7, 2005,  specifies  that Bombardier  may be
    contacted for  information regarding  repair, this  AD requires repair
    according to a method approved by either the Manager, New York ACO, or
    TCCA (or its delegated agent).

OPTIONAL TERMINATING ACTION FOR PARAGRAPHS (F), (G), (H), (I), AND (J)

(l) Unless already done, for airplanes having S/Ns 7013, 7017, 7037, 7046,
    7059, 7076,  7105, 7127,  7151, 7157,  7163, 7174,  7179, 7203,  7204,
    7228,  7271,  7347,  7362, 7378,  7417  through  7990 inclusive,  8000
    through 8076 inclusive, 8082, 8086, 8090 through 8092 inclusive,  8096
    and  8097:  Installation,   in  accordance  with   the  Accomplishment
    Instructions of Bombardier  Service Bulletin 601R-30-029,  Revision A,
    dated July  7, 2005,  of a  complete set  of new  inboard, center, and
    outboard piccolo  tubes, as  identified in  paragraphs (l)(1), (l)(2),
    and (l)(3) of this AD, terminates the requirements of paragraphs  (f),
    (g), (h), (i), and (j) of this AD. When these piccolo tubes have  been
    installed, remove the  Operating Limitations and  Abnormal Procedures,
    if inserted in accordance with paragraph (g) of this AD, from the AFM.

(1) For the  inboard piccolo tube:  Part numbers (P/N)  601-80032-7 (14432
    -107) and 601-80032-8 (14432-108).

(2) For the center piccolo tube: P/N 14464-105 and 14464-106.

(3) For the outboard piccolo tube: P/N 14463-109 and 14463-110.

PARTS INSTALLATION

(m) Unless already done, for airplanes having S/Ns 7013, 7017, 7037, 7046,
    7059, 7076,  7105, 7127,  7151, 7157,  7163, 7174,  7179, 7203,  7204,
    7228,  7271,  7347,  7362, 7378,  7417  through  7990 inclusive,  8000
    through 8076 inclusive, 8082, 8086, 8090 through 8092 inclusive,  8096
    and 8097:  As of  September 7,  2005, no  person may  install, on  any
    airplane, a  piccolo tube  having a  P/N listed  in paragraph  1.A. of
    Bombardier Service Bulletin  601R -30-029, Revision  A, dated July  7,
    2005, unless the applicable requirements of paragraphs (f) through (l)
    of this  AD have  been accomplished  for that  piccolo tube before the
    effective date of this AD  or the requirements specified in  paragraph
    (v) of this  AD have been  accomplished. As of  December 1, 2008  (the
    effective date of AD 2008-23-16),  the requirements  of  paragraph (v)
    of this AD must be followed.

RESTATEMENT OF REQUIREMENTS OF AD 2008-23-16

REVISION TO AFM

(n) Unless already done: For all airplanes, within 14 days after  December
    1,  2008, revise  the Operating  Limitations  and  Abnormal Procedures
    sections of the Canadair Regional  Jet AFM, CSP A-012, to  include the
    information in Canadair (Bombardier) TR RJ/155-6, dated September  17,
    2008, as specified in that TR. This may be done by inserting a copy of
    Canadair (Bombardier) TR RJ/155-6 into the AFM. This TR introduces new
    procedures for operation in  icing conditions. After the  AFM revision
    specified in this paragraph has been done, the AFM limitation required
    by paragraph (g) of this AD must be removed from the AFM.

NOTE 2: When Canadair (Bombardier) TR RJ/155-6, dated September 17,  2008,
has been included in general  revisions of the AFM, the  general revisions
may  be inserted  in the  AFM, provided  the relevant  information in  the
general revision is identical to  that in Canadair (Bombardier) TR  RJ/155
-6.

(o) Unless  already  done:   Before  further  flight  after  accomplishing
    paragraph  (n)  of this  AD,  operate the  airplane  according to  the
    limitations and procedures in Canadair (Bombardier) TR RJ/155-6, dated
    September 17, 2008, except that MMEL Entry 30-12-03, which permits the
    wing anti-ice system  to be inoperative  with specific provisions,  is
    not affected by this AD.

RECORDS CHECK

(p) Unless  already  done,  for  airplanes having  S/Ns 7003  through 7013
    inclusive, 7015, 7016, 7018 through 7036 inclusive, 7038 through  7045
    inclusive, 7047 through 7058  inclusive, 7060 through 7067  inclusive,
    7069 through 7075 inclusive, 7077 through 7104 inclusive, 7106 through
    7126  inclusive,  7128  through  7150  inclusive,  7152  through  7156
    inclusive, 7158 through 7162  inclusive, 7164 through 7178  inclusive,
    7180 through 7202 inclusive, 7204 through 7227 inclusive, 7229 through
    7270  inclusive,  7272  through  7346  inclusive,  7348  through  7358
    inclusive, 7360, 7361, 7363  through 7377 inclusive, 7379,  7380, 7382
    through 7416 inclusive, 8056 through 8076 inclusive, 8082, 8086,  8090
    though 8092 inclusive, 8096 and 8097: Within 30 days after December 1,
    2008,  review the  airplane maintenance  records to  determine if  any
    anti-ice piccolo  ducts or  complete leading  edge sections  have been
    replaced  since  May  1,  2000. Doing  the  review  in  this paragraph
    terminates the  requirements of  paragraphs (f)  and (i)  of this  AD.
    Doing  the  action  specified  in paragraph  (w)  or  (y)  of this  AD
    terminates the requirements of this paragraph.

(1) If  no anti-ice  piccolo ducts  and no  complete leading edge sections
    have been replaced since May 1, 2000, no further action is required by
    this paragraph.

(2) If any anti-ice piccolo duct or complete leading edge section has been
    replaced since May 1, 2000, or if it cannot be conclusively determined
    that no anti-ice piccolo ducts  and no complete leading edge  sections
    have been replaced since May  1, 2000, before further flight,  inspect
    the  serial  numbers  of  the replaced  ducts.  A  review  of airplane
    maintenance records is  acceptable in lieu  of this inspection  if the
    serial number  of the  duct can  be conclusively  determined from that
    review.

(i) If none of the piccolo duct serial numbers match any of those in  Part
    A, Paragraph  2.A., of  the Accomplishment  Instructions of Bombardier
    Alert  Service Bulletin  A601R-30-032,  dated  September 18,  2008, no
    further action is required by this paragraph.

(ii) If any  of the piccolo  duct serial numbers  matches any of  those in
     Part  A,  Paragraph  2.A.,  of  the  Accomplishment  Instructions  of
     Bombardier Alert Service  Bulletin A601R-30-032, dated  September 18,
     2008, or if  the serial number  cannot be determined,  do the actions
     required by paragraph (s) of this AD.

(q) Unless already done, for airplanes having S/Ns 7014, 7017, 7037, 7046,
    7059, 7076,  7105, 7127,  7151, 7157,  7163, 7179,  7203, 7228,  7271,
    7347, 7359, 7362,  7378, 7381, 7417  through 7990 inclusive,  and 8000
    through 8055 inclusive, on  which Bombardier Service Bulletin  601R-30
    -029 has  been accomplished:  Within 30  days after  December 1, 2008,
    review the airplane maintenance  records to determine if  any anti-ice
    piccolo ducts  or complete  leading edge  sections have  been replaced
    since accomplishing Bombardier Service Bulletin 601R-30-029. Doing the
    action in this paragraph terminates the requirements of paragraphs (f)
    and (i) of this AD. Doing the action specified in paragraph (w) or (y)
    of this AD terminates the requirements of this paragraph.

(1) If  no anti-ice  piccolo ducts  and no  complete leading edge sections
    have been replaced since May 1, 2000, no further action is required by
    this paragraph.

(2) If any anti-ice piccolo duct or complete leading edge section has been
    replaced since May 1, 2000, or if it cannot be conclusively determined
    that no anti-ice piccolo ducts  and no complete leading edge  sections
    have been replaced since May  1, 2000, before further flight,  inspect
    the  serial  numbers  of  the replaced  ducts.  A  review  of airplane
    maintenance records is  acceptable in lieu  of this inspection  if the
    serial number  of the  duct can  be conclusively  determined from that
    review.

(i) If none of the piccolo duct serial numbers match any of those in  Part
    A, Paragraph  2.A., of  the Accomplishment  Instructions of Bombardier
    Alert  Service Bulletin  A601R-30-032,  dated  September 18,  2008, no
    further action is required by this paragraph.

(ii) If any  of the piccolo  duct serial numbers  matches any of  those in
     Part  A,  Paragraph  2.A.,  of  the  Accomplishment  Instructions  of
     Bombardier Alert Service  Bulletin A601R-30-032, dated  September 18,
     2008, or if  the serial number  cannot be determined,  do the actions
     required by paragraph (s) of this AD.

(r) Unless already done, for airplanes having S/Ns 7014, 7017, 7037, 7046,
    7059, 7076,  7105, 7127,  7151, 7157,  7163, 7179,  7203, 7228,  7271,
    7347, 7359, 7362,  7378, 7381, 7417  through 7990 inclusive,  and 8000
    through 8055 inclusive, on  which Bombardier Service Bulletin  601R-30
    -029 has not been accomplished: Within 30 days after December 1, 2008,
    inspect the serial numbers of the piccolo ducts. A review of  airplane
    maintenance records is  acceptable in lieu  of this inspection  if the
    serial number  of the  duct can  be conclusively  determined from that
    review.  Doing  the  inspection  in  this  paragraph  terminates   the
    requirements of paragraphs  (f) and (i)  of this AD.  Doing the action
    specified  in  paragraph  (w)  or  (y)  of  this  AD  terminates   the
    requirements of this paragraph.

(1) If none of the piccolo duct serial numbers match any of those in  Part
    A, Paragraph  2.A., of  the Accomplishment  Instructions of Bombardier
    Alert  Service Bulletin  A601R-30-032,  dated  September 18,  2008, no
    further action is required by this paragraph.

(2) If any of the piccolo duct serial numbers matches any of those in Part
    A, Paragraph  2.A., of  the Accomplishment  Instructions of Bombardier
    Alert Service Bulletin A601R-30-032,  dated September 18, 2008,  or if
    the serial  number cannot  be determined,  do the  actions required by
    paragraph (s) of this AD.

INSPECTION OF THE WING ANTI-ICE PICCOLO DUCTS

(s) Unless already done, for airplanes having a piccolo duct identified in
    paragraph (p)(2)(ii), (q)(2)(ii), or (r)(2) of this AD: Within 30 days
    after doing the action specified in paragraph (p), (q), or (r) of this
    AD,  as  applicable, do  a  fluorescent dye  penetrant  inspection for
    cracking of the piccolo  ducts, in accordance with  the Accomplishment
    Instructions of Bombardier Alert Service Bulletin A601R-30-032,  dated
    September 18,  2008. If  no cracking  is found,  repeat the inspection
    thereafter at intervals  not to exceed  2,000 flight hours.  Doing the
    action specified  in paragraph  (w) or  (y) of  this AD terminates the
    requirements of this paragraph.

(t) Unless already  done: If any  cracking is found  during any inspection
    required by paragraph  (s) of this  AD, before further  flight, do the
    actions specified in paragraph (t)(1),  (t)(2), or (t)(3) of this  AD,
    except  where Bombardier  Alert Service  Bulletin A601R-30-032,  dated
    September 18,  2008, specifies  to contact  Bombardier for information
    regarding  repair,  this  AD requires  repair  according  to a  method
    approved  by  either  the  Manager, New  York  ACO,  or  TCCA (or  its
    delegated agent). Doing the action  specified in paragraph (w) or  (y)
    of this AD terminates the requirements of this paragraph.

(1) Replace   the   cracked  piccolo   duct,   in   accordance  with   the
    Accomplishment  Instructions  of  Bombardier  Alert  Service  Bulletin
    A601R-30-032,  dated September 18, 2008, with a new piccolo duct  that
    has the same part number as  identified in Part A, Paragraph 2.A.,  of
    the Accomplishment Instructions  of Bombardier Alert  Service Bulletin
    A601R-30-032,  dated September  18, 2008,  but that  does  not  have a
    serial number listed in that paragraph.

(2) Replace  the   cracked  piccolo   duct,   in   accordance   with   the
    Accomplishment  Instructions  of  Bombardier  Alert  Service  Bulletin
    A601R-30-032,  dated September 18, 2008, with a new piccolo duct  that
    has a part number identified in the applicable Bombardier  illustrated
    parts catalog  but not  identified in  Part A,  Paragraph 2.A., of the
    Accomplishment  Instructions  of  Bombardier  Alert  Service  Bulletin
    A601R-30-032, dated September 18, 2008.

(3) Replace the  cracked piccolo duct  with a piccolo  duct that has  been
    repaired in accordance with a  method approved by either the  Manager,
    New York ACO, FAA; or TCCA (or its delegated agent).

REPETITIVE INSPECTION OF THE WING ANTI-ICE PICCOLO DUCTS

(u) Unless already done, for airplanes on which an inspection required  by
    paragraph (h)(1) of  this AD has   been done, except  for airplanes on
    which the terminating action specified in paragraph (l) of this AD has
    been done: Within 2,000 flight hours since the last inspection, or  30
    days after December  1, 2008, whichever  occurs later, do  the actions
    specified in paragraph (s) of  this AD. Doing the inspection  required
    by this paragraph terminates the actions required by paragraph  (h)(1)
    of this AD. Doing the action specified in paragraph (w) or (y) of this
    AD terminates the requirements of this paragraph.

PARTS INSTALLATION PARAGRAPH

(v) Unless  already  done:  As  of  December  1,  2008,  the  requirements
    specified in paragraphs (v)(1) and (v)(2) of this AD must be followed.

(1) For airplanes on which  the terminating action specified in  paragraph
    (w) of this  AD had not  been  done as of December 1, 2008: No  person
    may install a piccolo duct having a part number identified in Part  A,
    Paragraph 2.A., of the Accomplishment Instructions of Bombardier Alert
    Service  Bulletin  A601R-30-032,  dated  September  18,  2008,  on any
    airplane, unless the requirements specified in paragraphs (s) and  (t)
    of this  AD, as  applicable, have  been accomplished  for that piccolo
    duct.

(2) For airplanes on which  the terminating action specified in  paragraph
    (w) of this  AD had been  done as of  December 1, 2008:  No person may
    install a  piccolo duct  having a  part number  identified in  Part A,
    Paragraph 2.A., of the Accomplishment Instructions of Bombardier Alert
    Service  Bulletin  A601R-30-032,  dated  September  18,  2008,  on any
    airplane.

OPTIONAL TERMINATING ACTION

(w) Replacing  all piccolo  ducts that  have serial  numbers identified in
    Part  A,  Paragraph  2.A.,  of  the  Accomplishment  Instructions   of
    Bombardier Alert  Service Bulletin  A601R-30-032, dated  September 18,
    2008, with piccolo ducts that do not have serial numbers identified in
    Part   A,  Paragraph  2.A.,  of  the  Accomplishment  Instructions  of
    Bombardier Alert  Service Bulletin  A601R-30-032, dated  September 18,
    2008, in accordance with the Accomplishment Instructions of Bombardier
    Alert  Service  Bulletin  A601R-30-032,  dated  September  18,   2008,
    terminates the  requirements of  paragraphs (f),  (h), (i),  (p), (q),
    (r), (s), (t), and (u) of this AD.

OPTIONAL SERVICE INFORMATION FOR CERTAIN REQUIREMENTS OF THIS AD

(x) Actions accomplished according to Bombardier Service Bulletin  601R-30
    -029, Revision B, dated August  29, 2005; or Bombardier Alert  Service
    Bulletin  A601R-30-032,  dated  September  18,  2008;  are  considered
    acceptable for compliance with the corresponding actions specified  in
    paragraphs (h)(1), (j)(1), (j)(2), (j)(3), and (l) of this AD.

NEW REQUIREMENTS OF THIS AD: ACTIONS AND COMPLIANCE

TERMINATING ACTION

(y) Unless already done, do the following actions: Within 24 months  after
    the effective  date of  this AD,  replace all  piccolo ducts that have
    serial  numbers  identified  in   Part  A,  Paragraph  2.A.,   of  the
    Accomplishment  Instructions  of  Bombardier  Alert  Service  Bulletin
    A601R-30-032, dated September 18, 2008, with piccolo ducts that do not
    have  serial numbers  identified  in  Part A,  Paragraph 2.A.,  of the
    Accomplishment  Instructions  of  Bombardier  Alert  Service  Bulletin
    A601R-30-032,  dated  September  18,  2008,  in  accordance  with  the
    Accomplishment  Instructions  of  Bombardier  Alert  Service  Bulletin
    A601R-30-032,  dated September  18, 2008.  Replacing  all  the piccolo
    ducts in accordance with this paragraph terminates the requirements of
    paragraphs (f), (h), (i), (p), (q), (r), (s), (t), and (u) of this AD.

FAA AD DIFFERENCES

NOTE 3: This  AD differs  from  the  MCAI  and/or  service information  as
follows: No differences.

OTHER FAA AD PROVISIONS

(z) 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. Send information
    to ATTN: Program Manager, Continuing Operational Safety, FAA, New York
    ACO,  1600  Stewart  Avenue,  Suite  410,  Westbury,  New  York 11590;
    telephone 516-228-7300; fax  516-794-5531.  Before using any  approved
    AMOC on any airplane to which the AMOC applies, notify your  principal
    maintenance inspector (PMI) or principal avionics inspector (PAI),  as
    appropriate,  or  lacking  a principal  inspector,  your  local Flight
    Standards District Office.

(2) Airworthy Product: For any requirement in this AD to obtain corrective
    actions from a manufacturer or other source, use these actions if they
    are FAA-approved.  Corrective actions  are considered  FAA-approved if
    they are approved by the State of Design Authority (or their delegated
    agent). You are required to assure the product is airworthy before  it
    is returned to service.

(3) Reporting Requirements:  For any  reporting requirement  in  this  AD,
    under the provisions of the Paperwork Reduction Act (44 U.S.C. 3501 et
    seq.), the  Office of  Management and  Budget (OMB)  has approved  the
    information  collection  requirements  and  has  assigned  OMB Control
    Number 2120-0056.

RELATED INFORMATION

(aa) Refer  to  MCAI Canadian  Airworthiness Directive  CF-2008-30,  dated
     October 7, 2008, and the service information identified in Table 1 of
     this AD, for related information.

                     TABLE 1--RELATED SERVICE INFORMATION
    ______________________________________________________________________
          SERVICE INFORMATION            REVISION LEVEL       DATE
    ______________________________________________________________________
    Bombardier Alert Service Bulletin       Original    September 18, 2008
    A601R-30-032, including Appendix A
    and Appendix B

    Bombardier Service Bulletin             Original       June 17, 2005
    601R-30-029, including Appendices A
    and B, dated June 17, 2005

    Bombardier Service Bulletin                A           July 7, 2005
    601R-30-029, including Appendix A,
    dated June 17, 2005, and Appendix B,
    Revision A, dated July 7, 2005

    Bombardier Service Bulletin                B         August 29, 2005
    601R-30-029, including Appendix A,
    dated June 17, 2005, and Appendix B,
    Revision A, dated July 7, 2005

    Canadair (Bombardier) Temporary         Original    September 17, 2008
    Revision RJ/155-6 to the Canadair
    Regional Jet Airplane Flight Manual,
    CSP A-012

    Canadair Temporary Revision RJ/155      Original       July 5, 2005
    to the Canadair Regional Jet Airplane
    Flight Manual, CSP A-012
    ______________________________________________________________________

MATERIAL INCORPORATED BY REFERENCE

(bb) You must use the service information contained in Table 2 of this AD,
     as applicable, to do the actions  required by this AD, unless the  AD
     specifies otherwise. If you accomplish the optional actions specified
     by this AD, you must use the service information contained in Table 3
     of this AD, as applicable, unless the AD specifies otherwise.

       TABLE 2--MATERIAL INCORPORATED BY REFERENCE FOR REQUIRED ACTIONS
    ______________________________________________________________________
          SERVICE INFORMATION            REVISION LEVEL       DATE
    ______________________________________________________________________
    Bombardier Alert Service Bulletin       Original    September 18, 2008
    A601R-30-032, including Appendix A
    and Appendix B

    Bombardier Service Bulletin                A           July 7, 2005
    601R-30-029, including Appendix A,
    dated June 17, 2005, and Appendix B,
    Revision A, dated July 7, 2005

    Canadair (Bombardier) Temporary         Original    September 17, 2008
    Revision RJ/155-6 to the Canadair
    Regional Jet Airplane Flight Manual,
    CSP A-012

    Canadair Temporary Revision RJ/155      Original       July 5, 2005
    to the Canadair Regional Jet Airplane
    Flight Manual, CSP A-012
    ______________________________________________________________________

       TABLE 3--MATERIAL INCORPORATED BY REFERENCE FOR OPTIONAL ACTIONS
    ______________________________________________________________________
          SERVICE INFORMATION            REVISION LEVEL       DATE
    ______________________________________________________________________
    Bombardier Alert Service Bulletin       Original    September 18, 2008
    A601R-30-032, including Appendix A
    and Appendix B

    Bombardier Service Bulletin             Original       June 17, 2005
    601R-30-029, including Appendices A
    and B, dated June 17, 2005

    Bombardier Service Bulletin                A           July 7, 2005
    601R-30-029, including Appendix A,
    dated June 17, 2005, and Appendix B,
    Revision A, dated July 7, 2005

    Bombardier Service Bulletin                B         August 29, 2005
    601R-30-029, including Appendix A,
    dated June 17, 2005, and Appendix B,
    Revision A, dated July 7, 2005
    ______________________________________________________________________

(1) The  Director  of  the  Federal Register  approved  Bombardier Service
    Bulletin 601R-30-029, dated June 17, 2005, including Appendices A  and
    B, dated June 17,  2005; and Bombardier Service  Bulletin 601R-30-029,
    Revision B, dated  August 29, 2005,  including Appendix A,  dated June
    17, 2005,  and Appendix  B, Revision  A, dated  July 7,  2005; under 5
    U.S.C. 552(a) and 1 CFR part 51.

(2) On December 1, 2008 (73 FR 67363, November 14, 2008), the Director  of
    the  Federal  Register   previously  approved  the   incorporation  by
    reference of Bombardier Alert Service Bulletin A601R-30-032, including
    Appendix A  and Appendix  B, dated  September 18,  2008; and  Canadair
    (Bombardier) Temporary Revision RJ/155-6, dated September 17, 2008, to
    the Canadair Regional Jet Airplane Flight Manual, CSP A-012.

(3) On September 7, 2005 (70  FR 49164, August 23, 2005), the  Director of
    the  Federal  Register   previously  approved  the   incorporation  by
    reference of Canadair Temporary  Revision RJ/155, dated July  5, 2005,
    to the Canadair  Regional Jet Airplane  Flight Manual, CSP  A-012; and
    Bombardier Service  Bulletin 601R-30-029,  Revision A,  dated July  7,
    2005,  including Appendix  A,  dated  June 17, 2005,  and  Appendix B,
    Revision A, dated July 7, 2005.

(4) For  service information  identified in  this AD,  contact Bombardier,
    Inc.,  400  Côte-Vertu  Road West,  Dorval,  Québec  H4S 1Y9,  Canada;
    telephone   514-855-5000;  fax   514-855-7401;  e-mail   thd.crj@aero.
    bombardier.com; Internet http://www.bombardier.com.

(5) You may review copies of the service information at the FAA, Transport
    Airplane Directorate, 1601 Lind  Avenue, SW., Renton, Washington.  For
    information on the availability of this material at the FAA, call  425
    -227-1221 or 425-227-1152.

(6) You  may  also  review copies  of  the  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/code_of_federal_regulations/i
    br_locations.html.

Issued in Renton, Washington, on  October 19, 2009. Ali Bahrami,  Manager,
Transport Airplane Directorate, Aircraft Certification Service.

FOR  FURTHER  INFORMATION  CONTACT:  Fabio  Buttitta,  Aerospace Engineer,
Airframe and Mechanical  Systems Branch, ANE-171,  FAA, New York  Aircraft
Certification Office, 1600 Stewart  Avenue, Suite 410, Westbury,  New York
11590; telephone (516) 228-7303; fax (516) 794-5531.
PREAMBLE 

AGENCY: Federal Aviation Administration (FAA), Department of Transportation (DOT).

ACTION: Final rule.

SUMMARY: We are superseding an existing airworthiness directive (AD) for the products listed above. This AD results from mandatory continuing airworthiness information (MCAI) originated by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as:

There have been several cases of wing leading edge anti-ice piccolo duct failure reported on CL-600-2B19 (CRJ) aircraft. Upon investigation, it was determined that ducts manufactured since May 2000 are susceptible to cracking due to the process used to drill holes in the ducts. This cracking may cause air leakage, with a possible adverse effect on the anti-ice air distribution pattern and anti-ice capability, without annunciation to the flight crew [and consequent reduced controllability of the airplane].

* * * * *

It has subsequently been determined that faulty ducts may also have been installed in a number of leading edge assemblies built as spares and whose current locations are not specifically known. * * *

* * * * *

We are issuing this AD to require actions to correct the unsafe condition on these products.

DATES: This AD becomes effective April 15, 2010.

The Director of the Federal Register approved the incorporation by reference of certain publications listed in this AD as of April 15, 2010.

On December 1, 2008 (73 FR 67363, November 14, 2008), the Director of the Federal Register previously approved the incorporation by reference of certain publications listed in this AD.

On September 7, 2005 (70 FR 49164, August 23, 2005), the Director of the Federal Register previously approved the incorporation by reference of certain other publications listed in this AD.

ADDRESSES: You may examine the AD docket on the Internet at http:// www.regulations.gov or in person at the U.S. Department of Transportation, Docket Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New Jersey Avenue, SE., Washington, DC.

FOR FURTHER INFORMATION CONTACT: Fabio Buttitta, Aerospace Engineer, Airframe and Mechanical Systems Branch, ANE-171, FAA, New York Aircraft Certification Office, 1600 Stewart Avenue, Suite 410, Westbury, New York 11590; telephone (516) 228-7303; fax (516) 794-5531.

SUPPLEMENTARY INFORMATION:

Discussion

We issued a notice of proposed rulemaking (NPRM) to amend 14 CFR part 39 to include an AD that would apply to the specified products. That NPRM was published in the Federal Register on July 24, 2009 (74 FR 36628), and proposed to supersede AD 2008-23-16, Amendment 39-15737 (73 FR 67363, November 14, 2008).
That NPRM proposed to correct an unsafe condition for the specified products.

The preamble to AD 2008-23-16 explains that we consider those requirements ''interim action'' and were considering further rulemaking. We now have determined that further rulemaking is indeed necessary to require the previously optional terminating action, and this AD follows from that determination. Transport Canada Civil Aviation (TCCA), which is the aviation authority for Canada, previously issued Canadian Airworthiness Directive CF-2008-30, dated October 7, 2008 (referred to after this as ''the MCAI''), to correct an unsafe condition for the specified products.

The unsafe condition is cracked piccolo ducts, which could result in air leakage, a possible adverse effect on the anti-ice distribution pattern and anti-ice capability without annunciation to the flight crew, and consequent reduced controllability of the airplane. Required actions include revising the airplane flight manual, inspecting to determine if certain anti-ice piccolo ducts are installed, and replacing or repairing the piccolo duct if necessary. You may obtain further information by examining the MCAI in the AD docket.

Comments

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

Explanation of Changes Made to the AD

We have revised this AD to identify the legal name of the manufacturer as published in the most recent type certificate data sheet for the affected airplane models.

We have revised paragraph (j)(5) of this AD to remove reference to Master Minimum Equipment List (MMEL) Entry 30-12-03. However, we have approved operation of the airplane according to MMEL Entry 30-12-03 as a method for complying with the requirements of paragraph (j)(5) of this AD. Operators may contact the Manager, New York ACO, ANE-170, for information regarding the use of MMEL Entry 30-12-03 for compliance with the requirements of paragraph (j)(5) of this AD. We have included a new Note 1 in this AD to specify that guidance on operating the airplane under certain conditions according to the MMEL can be found in MMEL Entry 30-12-03, and have renumbered subsequent notes accordingly.

Conclusion

We reviewed the available data and determined that air safety and the public interest require adopting the AD with the changes described previously. We determined that these changes will not increase the economic burden on any operator or increase the scope of the AD.

Differences Between This AD and the MCAI or Service Information

We have reviewed the MCAI and related service information and, in general, agree with their substance. But we might have found it necessary to use different words from those in the MCAI to ensure the AD is clear for U.S. operators and is enforceable. In making these changes, we do not intend to differ substantively from the information provided in the MCAI and related service information.

We might also have required different actions in this AD from those in the MCAI in order to follow our FAA policies. Any such differences are highlighted in a NOTE within the AD.

Explanation of Change to Costs of Compliance

Since issuance of the NPRM, we have increased the labor rate used in the Costs of Compliance from $80 per work-hour to $85 per work-hour. The Costs of Compliance information, below, reflects this increase in the specified hourly labor rate.

Costs of Compliance

We estimate that this AD will affect about 711 products of U.S. registry.

The actions that are required by AD 2008-23-16 and retained in this AD take about 3 work-hours per product, at an average labor rate of $85 per work hour. Required parts cost about $0 per product. Based on these figures, the estimated cost of the currently required actions is $181,305, or $255 per product.

We estimate that it will take about 12 work-hours per product to comply with the new basic requirements of this AD. The average labor rate is $85 per work-hour. Required parts will cost about $0 per product. Where the service information lists required parts costs that are covered under warranty, we have assumed that there will be no charge for these costs. As we do not control warranty coverage for affected parties, some parties may incur costs higher than estimated here. Based on these figures, we estimate the cost of this AD to the U.S. operators to be $725,220, or $1,020 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 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); and

3. Will not have a significant economic impact, positive or negative, on a substantial number of small entities under the criteria of the Regulatory Flexibility Act.

We prepared a regulatory evaluation of the estimated costs to comply with this AD and placed it in the AD docket.

Examining the AD Docket

You may examine the AD docket on the Internet at http:// www.regulations.gov; or in person at the Docket Operations office between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. The AD docket contains the NPRM, 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.

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 removing Amendment 39-15737 (73 FR 67363, November 14, 2008) and adding the following new AD: