Published 2006-07-11 · Federal Register document 06-6051
Airworthiness Directives; Bombardier Model CL-600-2C10 (Regional Jet Series 700, 701, and 702) Airplanes, Model CL-600-2D15 (Regional Jet Series 705) Airplanes, and Model CL-600-2D24 (Regional Jet Series 900) Airplanes
Publication summary
The FAA is superseding an existing airworthiness directive (AD), which applies to certain Bombardier Model CL-600-2C10 (Regional Jet Series 700 and 701) and CL-600-2D24 (Regional Jet Series 900) series airplanes. That AD currently requires repetitive detailed inspections for cracking or deformation, or pulled or missing fasteners, on the lower panel of the left- and right-hand main landing gear (MLG) doors, as applicable, and corrective actions if necessary. This new AD reduces the repetitive inspection interval for certain airplanes. This new AD also adds airplanes to the applicability. This AD results from a report of a MLG door departing from an airplane. We are issuing this AD to prevent failure of the lower panel of the MLG door, departure of the lower panel from the airplane, and consequent damage to airplane structure, which could adversely affect the airplane's continued safe flight and landing.
Why this record is shown
Source: Federal Register annual FAA metadata. Acquired 2026-09-03T22:23:20.745856+00:00. The title, summary and date are source facts.
- Source revision
- federal_register_ad_metadata_2006-8d787f8b35bc8016
- Source row
- results[245]
- Raw source SHA-256
- 8d787f8b35bc80165a417cea66de09cd32a1700face13759db364c607e405963
Final-rule publication
Recorded publication clauses
- AD identifier printed in this edition
- 2006-14-05
- Effective date printed in this edition
- 2006-08-15
Read 16 complete recorded clauses
Effective Date
Effective Date
(a) This AD becomes effective August 15, 2006.
Exact source excerpt. Text positions 9846–9914, end exclusive, in the original decoded publication. SHA-256: e1ef782d547bf3c1c88a64d5db39d535d37a8d177d0b866fcc40a914cd6dcac7
Affected ADs
Affected ADs
(b) This AD supersedes AD 2003-19-51.
Exact source excerpt. Text positions 9914–9971, end exclusive, in the original decoded publication. SHA-256: 55d6aff96af6a25bc15b7250c1dfef833915f8a22b27cb5eeba7949807decb2f
Applicability wording · Applicability
Applicability
(c) This AD applies to Bombardier Model CL-600-2C10 (Regional
Jet Series 700, 701, and 702) airplanes, serial numbers (S/Ns) 10003
and subsequent; and Model CL-600-2D15 (Regional Jet Series 705)
airplanes and Model CL-600-2D24 (Regional Jet Series 900) airplanes,
S/Ns 15001 and subsequent; certificated in any category.
Exact source excerpt. Text positions 9971–10316, end exclusive, in the original decoded publication. SHA-256: 66c8db4c4c19a535bb1456375387693d1942f81501394b9d20a6a8aa855b0e60
Unsafe Condition
Unsafe Condition
(d) This AD results from a report of a main landing gear (MLG)
door departing from an airplane. We are issuing this AD to prevent
failure of the lower panel of the MLG door, departure of the lower
panel from the airplane, and consequent damage to airplane
structure, which could adversely affect the airplane's continued
safe flight and landing.
Exact source excerpt. Text positions 10316–10690, end exclusive, in the original decoded publication. SHA-256: 489df678587ff691ddd654d9c2d2aaeb57e291f53c0faad3f716a6948ff450bc
Compliance
Compliance
(e) You are responsible for having the actions required by this
AD performed within the compliance times specified, unless the
actions have already been done.
Restatement of Requirements of AD 2003-19-51
Exact source excerpt. Text positions 10690–10914, end exclusive, in the original decoded publication. SHA-256: 9e3c77326137f8a24f508c49de98c95e664401fba3bca28a5be6d94b6469aac6
Initial Compliance Time
Initial Compliance Time
(f) For Model CL-600-2C10 (Regional Jet series 700 & 701) series
airplanes, S/Ns 10003 through 10999 inclusive; and Model CL-600-2D24
(Regional Jet series 900) series airplanes, S/Ns 15002 through 15990
inclusive: Perform the initial inspection specified in paragraph (g)
of this AD at the applicable time specified in paragraph (f)(1) or
(f)(2) of this AD.
(1) For airplanes with fewer than 1,500 total flight cycles as
of November 3, 2003 (the effective date of AD 2003-19-51): Do the
inspections before the accumulation of 1,050 total flight cycles, or
within 50 flight cycles after the effective date of this AD,
whichever is later.
(2) For airplanes with 1,500 or more total flight cycles as of
November 3, 2003: Do the inspections within 10 flight cycles after
the effective date of this AD.
Exact source excerpt. Text positions 10914–11761, end exclusive, in the original decoded publication. SHA-256: 93221c7f07186f996d756ce4fccb8ce3feb65d8fc46164332e4725d5290eca3c
Inspections
Inspections
(g) For Model CL-600-2C10 (Regional Jet series 700 & 701) series
airplanes, S/Ns 10003 through 10999 inclusive; and Model CL-600-2D24
(Regional Jet series 900) series airplanes, S/Ns 15002 through 15990
inclusive: At the applicable time specified in paragraph (f) of this
AD, perform detailed inspections of the lower panel, part number (P/
N) CC670-10520, of the left- and right-hand MLG doors for the
conditions and in the areas specified in paragraphs (g)(1), (g)(2),
(g)(3), and (g)(4) of this AD; and Figures 1, 2, and 3 of this AD.
Note 1: For the purposes of this AD, a detailed inspection is
defined as: ``An intensive visual examination of a specific
structural area, system, installation, or assembly to detect damage,
failure, or irregularity. Available lighting is normally
supplemented with a direct source of good lighting at intensity
deemed appropriate by the inspector. Inspection aids such as mirror,
magnifying lenses, etc., may be used. Surface cleaning and elaborate
access procedures may be required.''
(1) Inspect the cross member, P/N CC670-10572, of the MLG door
lower panel for cracking or deformation, in accordance with Figure 2
of this AD.
(2) Inspect the inner skin, P/N CC670-10577, of the MLG door
lower panel at the cross member (P/N CC670-10572) for cracking or
deformation, or pulled or missing fasteners, in accordance with
Figure 2 of this AD.
(3) Inspect the outer skin, P/N CC670-10574, of the MLG door
lower panel at the cross member (P/N CC670-10572) for cracking or
deformation, or pulled or missing fasteners, in accordance with
Figure 2 of this AD.
(4) Inspect the forward member, P/N CC670-10570, and aft member,
P/N CC670-10571, of the MLG door lower panel for cracking or
deformation, or pulled or missing fasteners, in accordance with
Figure 3 of this AD. Figures 1 through 3 of this AD follow.
BILLING CODE 4910-13-U
[[Page 38982]]
[GRAPHIC] [TIFF OMITTED] TR11JY06.009
[GRAPHIC] [TIFF OMITTED] TR11JY06.010
[[Page 38983]]
[GRAPHIC] [TIFF OMITTED] TR11JY06.011
BILLING CODE 4910-13-C
Exact source excerpt. Text positions 11761–13867, end exclusive, in the original decoded publication. SHA-256: edbebd0ce4ee0b882b8693ca6d657b47c7b1835396aaeb43909f2e700299298a
Repetitive Inspections
Repetitive Inspections
(h) If no cracking or deformation, or pulled or missing
fastener, as applicable, is found during any inspection required by
paragraph (g) or (h) of this AD, repeat the inspections thereafter
at intervals not to exceed 100 flight cycles.
Exact source excerpt. Text positions 13867–14136, end exclusive, in the original decoded publication. SHA-256: 1a615bbfad2372061cc3569c1a4e0e9fa9d58cbcd5b46f0c9cf1dd6c288ef089
Corrective Actions
Corrective Actions
(i) If any cracking or deformation, or pulled or missing
fastener, as applicable, is found during any inspection done in
accordance with paragraph (g) or (h) of this AD: Before further
flight, accomplish paragraph (i)(1), (i)(2), or (i)(3) of this AD.
(1) Repair the damage in accordance with a method approved by
either the Manager, New York Aircraft Certification Office (ACO),
FAA; or Transport Canada Civil Aviation (TCCA) (or its delegated
agent); and accomplish repetitive inspections in accordance with a
method and at a repetitive interval approved by same.
(2) Replace the lower panel assembly, P/N CC670-10520, of the
affected MLG door with a new or serviceable lower panel assembly
having the same P/N, according to a method approved by either the
Manager, New York ACO, FAA; or TCCA (or its delegated agent). Task
Cards 32-12-01-000-801-A01 and 32-12-01-400-801-A01 of the CRJ 700/
900 Series Regional Jet Aircraft Maintenance Manual are one approved
method of doing the replacement. Repeat the inspections specified in
paragraph (g) of this AD at intervals not to exceed 100 flight
cycles.
(3) Remove the lower panel assembly, P/N CC670-10520, of the
affected MLG door, and accomplish paragraph (i)(3)(i) or (i)(3)(ii),
as applicable.
(i) For Model CL600-2C10 (Regional Jet series 700 & 701) series
airplanes: Revise the Configuration Deviation List (CDL), Appendix
1, of the airplane flight manual (AFM), to include the following
limitations. This may be accomplished by inserting a copy of this AD
into the CDL of the AFM.
``For Model CL600-2C10 series airplanes: If one or both door
panel assemblies, part number CC670-10520, is missing:
(1) Take-off Weight is reduced by 202.5 kg/door, or 450 lb/door
(2) Enroute Climb Weight is reduced by 445.5 kg/door, or 990 lb/
door
(3) Landing Weight is reduced by 202.5 kg/door, or 450 lb/door
(4) Fuel Consumption is increased by +3.42% on fuel used/door
(5) Cruise Airspeed is limited to not more than 0.78 Mach.''
(ii) For Model CL-600-2D24 (Regional Jet series 900) series
airplanes: Revise the CDL, Appendix 1, of the AFM, to include the
following limitations. This may be accomplished by inserting a copy
of this AD into the CDL of the AFM.
``For Model CL600-2D24 series airplanes: If one or both door
panel assemblies, part number CC670-10520, is missing:
(1) Take-off Weight is reduced by 245 kg/door, or 540 lb/door
(2) Enroute Climb Weight is reduced by 551 kg/door, or 1,215 lb/
door
(3) Landing Weight is reduced by 245 kg/door, or 540 lb/door
(4) Fuel Consumption is increased by +3.42% on fuel used/door
(5) Cruise Airspeed is limited to not more than 0.78 Mach.''
New Requirements of This AD
Exact source excerpt. Text positions 14136–16919, end exclusive, in the original decoded publication. SHA-256: 0d0b501b57999d68d5f74b8ecf187c0693d7aa30d33ad6a97c0f9b66f22fc7cc
Inboard MLG Door Inspections
Inboard MLG Door Inspections
(j) For all airplanes on which an inspection has not been done
in accordance with paragraph (g) of this AD on or before the
effective date of this AD: At the applicable time specified in
paragraph (j)(1) or (j)(2) of this AD, do the inspections of the
left- and right-hand inboard MLG doors for damage in accordance with
Part A of the Accomplishment Instructions of Bombardier Alert
Service Bulletin A670BA-32-016, Revision A, dated June 7, 2005,
excluding Appendix A, dated June 2, 2005, and including Appendix B,
dated June 2, 2005. Doing the inspections required by this
[[Page 38984]]
paragraph terminates the actions required by paragraphs (f) through
(i) of this AD.
(1) For airplanes that have accumulated fewer than 1,500 total
flight cycles as of the effective date of this AD: Before the
accumulation of 1,000 total flight cycles or within 50 flight cycles
after the effective date of this AD, whichever occurs later.
(2) For airplanes that have accumulated 1,500 flight cycles or
more as of the effective date of this AD: Within 10 flight cycles
after the effective date of this AD.
(k) For airplanes on which an inspection has been done in
accordance with paragraph (g) of this AD on or before the effective
date of this AD: At the applicable time specified in paragraph
(k)(1) or (k)(2) of this AD, inspect installed door(s) as specified
in paragraph (j) of this AD. Doing the inspections required by this
paragraph terminates the actions required by paragraphs (f) through
(i) of this AD.
(1) For airplanes that are not subject to an approved
alternative method of compliance (AMOC) that extends the inspection
interval to 450 flight cycles: Within 100 flight cycles since the
last inspection done in accordance with paragraph (g) of this AD.
(2) For airplanes that are subject to an approved AMOC that
extends the inspection interval to 450 flight cycles: At the earlier
of the times specified in paragraphs (k)(2)(i) and (k)(2)(ii) of
this AD:
(i) Within 450 flight cycles since the last inspection done in
accordance with paragraph (g) of this AD.
(ii) Within 100 flight cycles since the last inspection done in
accordance with paragraph (g) of this AD or within 50 cycles after
the effective date of this AD, whichever occurs later.
(l) If no damage is found during any inspection done in
accordance with paragraph (j) of this AD, repeat the inspections
specified in paragraph (j) of this AD thereafter at intervals not to
exceed 100 flight cycles.
Exact source excerpt. Text positions 16919–19487, end exclusive, in the original decoded publication. SHA-256: aa97cbae181f6d609e7d6db472f38a99fef17adb169fcb161897490e232f3a51
Corrective Action--Replace or Remove MLG Door
Corrective Action--Replace or Remove MLG Door
(m) If any damage is found during any inspection done in
accordance with paragraph (j) of this AD, before further flight, do
the actions in paragraph (m)(1) or (m)(2) of this AD. Repeat the
inspections specified in paragraph (j) of this AD thereafter at
intervals not to exceed 100 flight cycles.
(1) Replace the inboard MLG door with a new or repaired door in
accordance with Part B of the Accomplishment Instructions of the
Bombardier Alert Service Bulletin A670BA-32-016, Revision A, dated
June 7, 2005, excluding Appendix A, dated June 2, 2005, and
including Appendix B, dated June 2, 2005; except where the service
bulletin specifies to contact the manufacturer for repair if no
generic repair engineering order (REO) is available, before further
flight, repair using a method approved by either the Manager, New
York ACO, FAA; or the TCCA (or its delegated agent).
(2) Remove the inboard MLG door in accordance with Part B of the
Accomplishment Instructions of the Bombardier Alert Service Bulletin
A670BA-32-016, Revision A, dated June 7, 2005, excluding Appendix A,
dated June 2, 2005, and including Appendix B, dated June 2, 2005;
and accomplish paragraph (m)(2)(i) or (m)(2)(ii), as applicable.
(i) For Model CL-600-2C10 (Regional Jet Series 700, 701, & 702)
airplanes and Model CL-600-2D15 (Regional Jet Series 705) airplanes:
Revise the Configuration Deviation List (CDL), Appendix 1, of the
Bombardier Canadair Regional Jet AFM, to include the following
limitations. This may be accomplished by inserting a copy of this AD
into the CDL of the AFM. Remove any existing CDL limitation required
by paragraph (i)(3)(i) of this AD from the AFM.
``For Model CL-600-2C10 (Regional Jet Series 700, 701, & 702)
airplanes and Model CL-600-2D15 (Regional Jet Series 705) airplanes:
If one or both door panel assemblies, part number CC670-10520, is
missing:
(1) Take-off Weight is reduced by 202.5 kg/door, or 450 lb/door
(2) Enroute Climb Weight is reduced by 445.5 kg/door, or 990 lb/
door
(3) Landing Weight is reduced by 202.5 kg/door, or 450 lb/door
(4) Fuel Consumption is increased by +2.5% on fuel used/door
(5) Cruise Airspeed is limited to not more than 0.78 Mach
(6) The climb ceiling obtained from the Flight Planning and
Cruise Control Manual (FPCCM) must be reduced by 1,000 ft/door.''
Note 2: When a statement with the information specified in
paragraph (m)(2)(i) of this AD has been included in the general
revisions of the AFM, the general revisions may be inserted into the
AFM, and the copy of this AD may be removed from the AFM.
(ii) For Model CL-600-2D24 (Regional Jet Series 900) airplanes:
Revise the CDL, Appendix 1, of the Bombardier Canadair Regional Jet
AFM, to include the following limitations. This may be accomplished
by inserting a copy of this AD into the CDL of the AFM. Remove any
existing CDL limitation required by paragraph (i)(3)(ii) of this AD
from the AFM.
``For Model CL-600-2D24 (Regional Jet Series 900) airplanes: If
one or both door panel assemblies, part number CC670-10520, is
missing:
(1) Take-off Weight is reduced by 245 kg/door, or 540 lb/door
(2) Enroute Climb Weight is reduced by 551 kg/door, or 1,215 lb/
door
(3) Landing Weight is reduced by 245 kg/door, or 540 lb/door
(4) Fuel Consumption is increased by +2.5% on fuel used/door
(5) Cruise Airspeed is limited to not more than 0.78 Mach
(6) The climb ceiling obtained from the Flight Planning and
Cruise Control Manual (FPCCM) must be reduced by 1,000 ft/door.''
Note 3: When a statement with the information specified in
paragraph (m)(2)(ii) of this AD has been included in the general
revisions of the AFM, the general revisions may be inserted into the
AFM, and the copy of this AD may be removed from the AFM.
Exact source excerpt. Text positions 19487–23387, end exclusive, in the original decoded publication. SHA-256: 886b71787d4d3a300c9380e6a489485c9d26bcb4134eef0de9f4b4b04839ef27
Revise CDL
Revise CDL
(n) For airplanes on which the door(s) have been removed in
accordance with paragraph (i)(3) of this AD: Within 30 days after
the effective date of this AD, do the revision specified in
paragraph (m)(2)(i) or (m)(2)(ii) of this AD, as applicable, and
remove any revision required by paragraph (i)(3)(i) or (i)(3)(ii) of
this AD.
Exact source excerpt. Text positions 23387–23738, end exclusive, in the original decoded publication. SHA-256: 0f1a6bd64b23bcb7b28cc2b1e23df9ec71392b5a92f9458972bb725ef9b5dc23
No Reporting Required
No Reporting Required
(o) Although Bombardier Alert Service Bulletin A670BA-32-016,
Revision A, dated June 7, 2005, specifies to submit certain
information to the manufacturer, this AD does not include that
requirement.
Exact source excerpt. Text positions 23738–23967, end exclusive, in the original decoded publication. SHA-256: 039b75c26f25cefafd43b3601f0147fa6716861f710b3c95ad5fe58092351661
Actions Accomplished According to Previous Issue of Service Bulletin
Actions Accomplished According to Previous Issue of Service
Bulletin
(p) Actions accomplished before the effective date of this AD
according to Bombardier Alert Service Bulletin A670BA-32-016, dated
June 2, 2005, are considered acceptable for compliance with the
corresponding action specified in this AD.
Alternative Methods of Compliance (AMOCs)
(q)(1) The Manager, New York ACO, FAA, has the authority to
approve AMOCs for this AD, if requested in accordance with the
procedures found in 14 CFR 39.19.
(2) Before using any AMOC approved in accordance with Sec.
39.19 on any airplane to which the AMOC applies, notify the
appropriate principal inspector in the FAA Flight Standards
Certificate Holding District Office.
(3) AMOCs approved previously in accordance with AD 2003-19-51
are not approved as AMOCs with this AD.
Exact source excerpt. Text positions 23967–24822, end exclusive, in the original decoded publication. SHA-256: 42ab74c18cbfba9c97fed3d3377a83dd1797b38110d56580160aeafba63c9c93
Related Information
Related Information
(r) Canadian airworthiness directive CF-2003-23R2, dated July
27, 2005, also addresses the subject of this AD.
Exact source excerpt. Text positions 24822–24960, end exclusive, in the original decoded publication. SHA-256: 0d24a9441f78a2e42815351128ae1b1a22bbd4b41b5497bbc42ff0a69a9b84f8
Material Incorporated by Reference
Material Incorporated by Reference
(s) You must use Bombardier Alert Service Bulletin A670BA-32-
016, Revision A, dated June 7, 2005, excluding Appendix A, dated
June 2, 2005, and including Appendix B, dated June 2, 2005, to
perform the actions that are required by this AD, unless the AD
specifies otherwise. The Director of the Federal Register approved
the incorporation by reference of this document in accordance with 5
U.S.C. 552(a) and 1 CFR part 51. Contact Bombardier, Inc., Canadair,
Aerospace Group, P.O. Box 6087, Station Centre-ville, Montreal,
Quebec H3C 3G9, Canada, for a copy of this service information. You
may review copies at the Docket Management Facility, U.S. Department
of Transportation, 400 Seventh Street, SW., Room PL-401, Nassif
Building, Washington, DC; on the Internet at http://dms.dot.gov; or
at the National Archives and Records Administration (NARA). For
information on the availability of this material at the NARA, call
(202) 741-6030, or go to http://www.archives.gov/federal_register/code_of_federal_regulations/ibr_locations.html.
[[Page 38985]]
Exact source excerpt. Text positions 24960–26067, end exclusive, in the original decoded publication. SHA-256: 035c9c654189c1a13be6766b835ef170ebf1e49592550c9fc0fa8ad9e4bb6b42
No replacement link has been established from this edition. The complete historical rule chain and current legal effect remain unknown.
Find all recorded historical references to AD 2006-14-05 · 1 printed reference observations in this pinned collection.
These are observations from one dated publication. Current legal status is unknown; aircraft applicability, installed configuration, compliance and burden require separate evidence. Missing or unparsed conditions remain unknown.
Why these observations are shown
They were extracted offline from the same immutable official HTML source as the complete recorded text. The dated source wording, original text coordinates and exact quote digests are retained. PDF/text agreement and current regulatory effect have not been qualified.
Observation revision: whole-ad-publication-clause-observations-1.0.1. Text SHA-256: 34b82602385dcc652eb1809dedb0e0d910eb86d3a0761c9fbf75c932ca3d35d6. Source manifest: b2e42f52f224f1d82c22c627b771a1f646a5fb0676785de4d8bda497fbce17c4.
Official source · 2006-07-11
Publication text
This is the complete recorded text of this dated publication.
Current legal effect is unknown. Aircraft applicability, installed configuration and compliance require separate evidence. PDF/text agreement has not been evaluated.
Read the complete official publication text
[Federal Register Volume 71, Number 132 (Tuesday, July 11, 2006)]
[Rules and Regulations]
[Pages 38979-38985]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 06-6051]
=======================================================================
-----------------------------------------------------------------------
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2006-24074; Directorate Identifier 2005-NM-213-AD;
Amendment 39-14676; AD 2006-14-05]
RIN 2120-AA64
Airworthiness Directives; Bombardier Model CL-600-2C10 (Regional
Jet Series 700, 701, and 702) Airplanes, Model CL-600-2D15 (Regional
Jet Series 705) Airplanes, and Model CL-600-2D24 (Regional Jet Series
900) Airplanes
AGENCY: Federal Aviation Administration (FAA), Department of
Transportation (DOT).
ACTION: Final rule.
-----------------------------------------------------------------------
SUMMARY: The FAA is superseding an existing airworthiness directive
(AD), which applies to certain Bombardier Model CL-600-2C10 (Regional
Jet Series 700 and 701) and CL-600-2D24 (Regional Jet Series 900)
series airplanes. That AD currently requires repetitive detailed
inspections for cracking or deformation, or pulled or missing
fasteners, on the lower panel of the left- and right-hand main landing
gear (MLG) doors, as applicable, and corrective actions if necessary.
This new AD reduces the repetitive inspection interval for certain
airplanes. This new AD also adds airplanes to the applicability. This
AD results from a report of a MLG door departing from an airplane. We
are issuing this AD to prevent failure of the lower panel of the MLG
door, departure of the lower panel from the airplane, and consequent
damage to airplane structure, which could adversely affect the
airplane's continued safe flight and landing.
DATES: This AD becomes effective August 15, 2006.
The Director of the Federal Register approved the incorporation by
reference of certain publications listed in the AD as of August 15,
2006.
ADDRESSES: You may examine the AD docket on the Internet at http://dms.dot.gov or in person at the Docket Management Facility, U.S.
Department of Transportation, 400 Seventh Street, SW., Nassif Building,
Room PL-401, Washington, DC.
[[Page 38980]]
Contact Bombardier, Inc., Canadair, Aerospace Group, P.O. Box 6087,
Station Centre-ville, Montreal, Quebec H3C 3G9, Canada, for service
information identified in this AD.
FOR FURTHER INFORMATION CONTACT: Richard Beckwith, Aerospace Engineer,
Airframe and Propulsion Branch, ANE-171, FAA, New York Aircraft
Certification Office, 1600 Stewart Avenue, suite 410, Westbury, New
York 11590; telephone (516) 228-7302; fax (516) 794-5531.
SUPPLEMENTARY INFORMATION:
Examining the Docket
You may examine the airworthiness directive (AD) docket on the
Internet at http://dms.dot.gov or in person at the Docket Management
Facility office between 9 a.m. and 5 p.m., Monday through Friday,
except Federal holidays. The Docket Management Facility office
(telephone (800) 647-5227) is located on the plaza level of the Nassif
Building at the street address stated in the ADDRESSES section.
Discussion
The FAA issued a notice of proposed rulemaking (NPRM) to amend 14
CFR part 39 to include an AD that supersedes AD 2003-19-51, amendment
39-13353 (68 FR 61615, October 29, 2003). The existing AD applies to
certain Bombardier Model CL-600-2C10 (Regional Jet Series 700 and 701)
and CL-600-2D24 (Regional Jet Series 900) series airplanes (originally
issued September 17, 2003, as an emergency airworthiness directive).
That NPRM was published in the Federal Register on March 7, 2006 (71 FR
11335). That NPRM proposed to continue to require repetitive detailed
inspections for cracking or deformation, or pulled or missing
fasteners, on the lower panel of the left- and right-hand main landing
gear (MLG) doors, as applicable, and corrective actions if necessary.
That NPRM also proposed to reduce the repetitive inspection interval
for certain airplanes and to add airplanes to the applicability.
Comments
We provided the public the opportunity to participate in the
development of this AD. No comments have been received on the NPRM or
on the determination of the cost to the public.
Revision of Corrective Action Paragraph (i)(2)
We have revised paragraph (i)(2) of this AD to specify that the
replacement be done in accordance with a method approved by the
Manager, New York Aircraft Certification Office (ACO), FAA; or
Transport Canada Civil Aviation (TCCA) (or its delegated agent), and
that doing the replacement in accordance with Task Cards 32-12-01-000-
801-A01 and 32-12-01-400-801-A01 of the CRJ 700/900 Series Regional Jet
Aircraft Maintenance Manual is one approved method.
Clarification of Paragraph (k) Requirements
We have revised paragraph (k) of this AD to clarify that
inspections must be done on installed door(s) that have previously been
inspected in accordance with paragraph (g).
Clarification of AFM Reference
We have revised the AFM reference specified in paragraphs (m)(2)(i)
and (m)(2)(ii) of this AD.
Conclusion
We have carefully reviewed the available data, and determined that
air safety and the public interest require adopting the AD with the
changes described previously. We have determined that these changes
will neither increase the economic burden on any operator nor increase
the scope of the AD.
Interim Action
We consider this AD interim action. If final action is later
identified, we may consider further rulemaking then.
Costs of Compliance
The following table provides the estimated costs for U.S. operators
to comply with this AD. This affects about 213 airplanes of U.S.
registry.
Estimated Costs
----------------------------------------------------------------------------------------------------------------
Number of
Work Average U.S.-
Action hours labor rate Cost per airplane registered Fleet cost
per hour airplanes
----------------------------------------------------------------------------------------------------------------
Inspections (required by AD 2003- 1 $65 $65, per inspection 83 $5,395, per
19-51). cycle. inspection cycle.
Inspections (new action).......... 1 65 $65, per inspection 213 $13,854, per
cycle. inspection cycle.
Revision (new action)............. 1 65 $65, if necessary... 213 Up to $13,854.
----------------------------------------------------------------------------------------------------------------
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 have 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 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. See the ADDRESSES
section for a location to examine the regulatory evaluation.
[[Page 38981]]
List of Subjects in 14 CFR Part 39
Air transportation, Aircraft, Aviation safety, Incorporation by
reference, Safety.
Adoption of the Amendment
0
Accordingly, under the authority delegated to me by the Administrator,
the FAA amends 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 Federal Aviation Administration (FAA) amends Sec. 39.13 by
removing amendment 39-13353 (68 FR 61615, October 29, 2003) and by
adding the following new airworthiness directive (AD):
2006-14-05 Bombardier, Inc. (Formerly Canadair): Amendment 39-14676.
Docket No. FAA-2006-24074; Directorate Identifier 2005-NM-213-AD.
Effective Date
(a) This AD becomes effective August 15, 2006.
Affected ADs
(b) This AD supersedes AD 2003-19-51.
Applicability
(c) This AD applies to Bombardier Model CL-600-2C10 (Regional
Jet Series 700, 701, and 702) airplanes, serial numbers (S/Ns) 10003
and subsequent; and Model CL-600-2D15 (Regional Jet Series 705)
airplanes and Model CL-600-2D24 (Regional Jet Series 900) airplanes,
S/Ns 15001 and subsequent; certificated in any category.
Unsafe Condition
(d) This AD results from a report of a main landing gear (MLG)
door departing from an airplane. We are issuing this AD to prevent
failure of the lower panel of the MLG door, departure of the lower
panel from the airplane, and consequent damage to airplane
structure, which could adversely affect the airplane's continued
safe flight and landing.
Compliance
(e) You are responsible for having the actions required by this
AD performed within the compliance times specified, unless the
actions have already been done.
Restatement of Requirements of AD 2003-19-51
Initial Compliance Time
(f) For Model CL-600-2C10 (Regional Jet series 700 & 701) series
airplanes, S/Ns 10003 through 10999 inclusive; and Model CL-600-2D24
(Regional Jet series 900) series airplanes, S/Ns 15002 through 15990
inclusive: Perform the initial inspection specified in paragraph (g)
of this AD at the applicable time specified in paragraph (f)(1) or
(f)(2) of this AD.
(1) For airplanes with fewer than 1,500 total flight cycles as
of November 3, 2003 (the effective date of AD 2003-19-51): Do the
inspections before the accumulation of 1,050 total flight cycles, or
within 50 flight cycles after the effective date of this AD,
whichever is later.
(2) For airplanes with 1,500 or more total flight cycles as of
November 3, 2003: Do the inspections within 10 flight cycles after
the effective date of this AD.
Inspections
(g) For Model CL-600-2C10 (Regional Jet series 700 & 701) series
airplanes, S/Ns 10003 through 10999 inclusive; and Model CL-600-2D24
(Regional Jet series 900) series airplanes, S/Ns 15002 through 15990
inclusive: At the applicable time specified in paragraph (f) of this
AD, perform detailed inspections of the lower panel, part number (P/
N) CC670-10520, of the left- and right-hand MLG doors for the
conditions and in the areas specified in paragraphs (g)(1), (g)(2),
(g)(3), and (g)(4) of this AD; and Figures 1, 2, and 3 of this AD.
Note 1: For the purposes of this AD, a detailed inspection is
defined as: ``An intensive visual examination of a specific
structural area, system, installation, or assembly to detect damage,
failure, or irregularity. Available lighting is normally
supplemented with a direct source of good lighting at intensity
deemed appropriate by the inspector. Inspection aids such as mirror,
magnifying lenses, etc., may be used. Surface cleaning and elaborate
access procedures may be required.''
(1) Inspect the cross member, P/N CC670-10572, of the MLG door
lower panel for cracking or deformation, in accordance with Figure 2
of this AD.
(2) Inspect the inner skin, P/N CC670-10577, of the MLG door
lower panel at the cross member (P/N CC670-10572) for cracking or
deformation, or pulled or missing fasteners, in accordance with
Figure 2 of this AD.
(3) Inspect the outer skin, P/N CC670-10574, of the MLG door
lower panel at the cross member (P/N CC670-10572) for cracking or
deformation, or pulled or missing fasteners, in accordance with
Figure 2 of this AD.
(4) Inspect the forward member, P/N CC670-10570, and aft member,
P/N CC670-10571, of the MLG door lower panel for cracking or
deformation, or pulled or missing fasteners, in accordance with
Figure 3 of this AD. Figures 1 through 3 of this AD follow.
BILLING CODE 4910-13-U
[[Page 38982]]
[GRAPHIC] [TIFF OMITTED] TR11JY06.009
[GRAPHIC] [TIFF OMITTED] TR11JY06.010
[[Page 38983]]
[GRAPHIC] [TIFF OMITTED] TR11JY06.011
BILLING CODE 4910-13-C
Repetitive Inspections
(h) If no cracking or deformation, or pulled or missing
fastener, as applicable, is found during any inspection required by
paragraph (g) or (h) of this AD, repeat the inspections thereafter
at intervals not to exceed 100 flight cycles.
Corrective Actions
(i) If any cracking or deformation, or pulled or missing
fastener, as applicable, is found during any inspection done in
accordance with paragraph (g) or (h) of this AD: Before further
flight, accomplish paragraph (i)(1), (i)(2), or (i)(3) of this AD.
(1) Repair the damage in accordance with a method approved by
either the Manager, New York Aircraft Certification Office (ACO),
FAA; or Transport Canada Civil Aviation (TCCA) (or its delegated
agent); and accomplish repetitive inspections in accordance with a
method and at a repetitive interval approved by same.
(2) Replace the lower panel assembly, P/N CC670-10520, of the
affected MLG door with a new or serviceable lower panel assembly
having the same P/N, according to a method approved by either the
Manager, New York ACO, FAA; or TCCA (or its delegated agent). Task
Cards 32-12-01-000-801-A01 and 32-12-01-400-801-A01 of the CRJ 700/
900 Series Regional Jet Aircraft Maintenance Manual are one approved
method of doing the replacement. Repeat the inspections specified in
paragraph (g) of this AD at intervals not to exceed 100 flight
cycles.
(3) Remove the lower panel assembly, P/N CC670-10520, of the
affected MLG door, and accomplish paragraph (i)(3)(i) or (i)(3)(ii),
as applicable.
(i) For Model CL600-2C10 (Regional Jet series 700 & 701) series
airplanes: Revise the Configuration Deviation List (CDL), Appendix
1, of the airplane flight manual (AFM), to include the following
limitations. This may be accomplished by inserting a copy of this AD
into the CDL of the AFM.
``For Model CL600-2C10 series airplanes: If one or both door
panel assemblies, part number CC670-10520, is missing:
(1) Take-off Weight is reduced by 202.5 kg/door, or 450 lb/door
(2) Enroute Climb Weight is reduced by 445.5 kg/door, or 990 lb/
door
(3) Landing Weight is reduced by 202.5 kg/door, or 450 lb/door
(4) Fuel Consumption is increased by +3.42% on fuel used/door
(5) Cruise Airspeed is limited to not more than 0.78 Mach.''
(ii) For Model CL-600-2D24 (Regional Jet series 900) series
airplanes: Revise the CDL, Appendix 1, of the AFM, to include the
following limitations. This may be accomplished by inserting a copy
of this AD into the CDL of the AFM.
``For Model CL600-2D24 series airplanes: If one or both door
panel assemblies, part number CC670-10520, is missing:
(1) Take-off Weight is reduced by 245 kg/door, or 540 lb/door
(2) Enroute Climb Weight is reduced by 551 kg/door, or 1,215 lb/
door
(3) Landing Weight is reduced by 245 kg/door, or 540 lb/door
(4) Fuel Consumption is increased by +3.42% on fuel used/door
(5) Cruise Airspeed is limited to not more than 0.78 Mach.''
New Requirements of This AD
Inboard MLG Door Inspections
(j) For all airplanes on which an inspection has not been done
in accordance with paragraph (g) of this AD on or before the
effective date of this AD: At the applicable time specified in
paragraph (j)(1) or (j)(2) of this AD, do the inspections of the
left- and right-hand inboard MLG doors for damage in accordance with
Part A of the Accomplishment Instructions of Bombardier Alert
Service Bulletin A670BA-32-016, Revision A, dated June 7, 2005,
excluding Appendix A, dated June 2, 2005, and including Appendix B,
dated June 2, 2005. Doing the inspections required by this
[[Page 38984]]
paragraph terminates the actions required by paragraphs (f) through
(i) of this AD.
(1) For airplanes that have accumulated fewer than 1,500 total
flight cycles as of the effective date of this AD: Before the
accumulation of 1,000 total flight cycles or within 50 flight cycles
after the effective date of this AD, whichever occurs later.
(2) For airplanes that have accumulated 1,500 flight cycles or
more as of the effective date of this AD: Within 10 flight cycles
after the effective date of this AD.
(k) For airplanes on which an inspection has been done in
accordance with paragraph (g) of this AD on or before the effective
date of this AD: At the applicable time specified in paragraph
(k)(1) or (k)(2) of this AD, inspect installed door(s) as specified
in paragraph (j) of this AD. Doing the inspections required by this
paragraph terminates the actions required by paragraphs (f) through
(i) of this AD.
(1) For airplanes that are not subject to an approved
alternative method of compliance (AMOC) that extends the inspection
interval to 450 flight cycles: Within 100 flight cycles since the
last inspection done in accordance with paragraph (g) of this AD.
(2) For airplanes that are subject to an approved AMOC that
extends the inspection interval to 450 flight cycles: At the earlier
of the times specified in paragraphs (k)(2)(i) and (k)(2)(ii) of
this AD:
(i) Within 450 flight cycles since the last inspection done in
accordance with paragraph (g) of this AD.
(ii) Within 100 flight cycles since the last inspection done in
accordance with paragraph (g) of this AD or within 50 cycles after
the effective date of this AD, whichever occurs later.
(l) If no damage is found during any inspection done in
accordance with paragraph (j) of this AD, repeat the inspections
specified in paragraph (j) of this AD thereafter at intervals not to
exceed 100 flight cycles.
Corrective Action--Replace or Remove MLG Door
(m) If any damage is found during any inspection done in
accordance with paragraph (j) of this AD, before further flight, do
the actions in paragraph (m)(1) or (m)(2) of this AD. Repeat the
inspections specified in paragraph (j) of this AD thereafter at
intervals not to exceed 100 flight cycles.
(1) Replace the inboard MLG door with a new or repaired door in
accordance with Part B of the Accomplishment Instructions of the
Bombardier Alert Service Bulletin A670BA-32-016, Revision A, dated
June 7, 2005, excluding Appendix A, dated June 2, 2005, and
including Appendix B, dated June 2, 2005; except where the service
bulletin specifies to contact the manufacturer for repair if no
generic repair engineering order (REO) is available, before further
flight, repair using a method approved by either the Manager, New
York ACO, FAA; or the TCCA (or its delegated agent).
(2) Remove the inboard MLG door in accordance with Part B of the
Accomplishment Instructions of the Bombardier Alert Service Bulletin
A670BA-32-016, Revision A, dated June 7, 2005, excluding Appendix A,
dated June 2, 2005, and including Appendix B, dated June 2, 2005;
and accomplish paragraph (m)(2)(i) or (m)(2)(ii), as applicable.
(i) For Model CL-600-2C10 (Regional Jet Series 700, 701, & 702)
airplanes and Model CL-600-2D15 (Regional Jet Series 705) airplanes:
Revise the Configuration Deviation List (CDL), Appendix 1, of the
Bombardier Canadair Regional Jet AFM, to include the following
limitations. This may be accomplished by inserting a copy of this AD
into the CDL of the AFM. Remove any existing CDL limitation required
by paragraph (i)(3)(i) of this AD from the AFM.
``For Model CL-600-2C10 (Regional Jet Series 700, 701, & 702)
airplanes and Model CL-600-2D15 (Regional Jet Series 705) airplanes:
If one or both door panel assemblies, part number CC670-10520, is
missing:
(1) Take-off Weight is reduced by 202.5 kg/door, or 450 lb/door
(2) Enroute Climb Weight is reduced by 445.5 kg/door, or 990 lb/
door
(3) Landing Weight is reduced by 202.5 kg/door, or 450 lb/door
(4) Fuel Consumption is increased by +2.5% on fuel used/door
(5) Cruise Airspeed is limited to not more than 0.78 Mach
(6) The climb ceiling obtained from the Flight Planning and
Cruise Control Manual (FPCCM) must be reduced by 1,000 ft/door.''
Note 2: When a statement with the information specified in
paragraph (m)(2)(i) of this AD has been included in the general
revisions of the AFM, the general revisions may be inserted into the
AFM, and the copy of this AD may be removed from the AFM.
(ii) For Model CL-600-2D24 (Regional Jet Series 900) airplanes:
Revise the CDL, Appendix 1, of the Bombardier Canadair Regional Jet
AFM, to include the following limitations. This may be accomplished
by inserting a copy of this AD into the CDL of the AFM. Remove any
existing CDL limitation required by paragraph (i)(3)(ii) of this AD
from the AFM.
``For Model CL-600-2D24 (Regional Jet Series 900) airplanes: If
one or both door panel assemblies, part number CC670-10520, is
missing:
(1) Take-off Weight is reduced by 245 kg/door, or 540 lb/door
(2) Enroute Climb Weight is reduced by 551 kg/door, or 1,215 lb/
door
(3) Landing Weight is reduced by 245 kg/door, or 540 lb/door
(4) Fuel Consumption is increased by +2.5% on fuel used/door
(5) Cruise Airspeed is limited to not more than 0.78 Mach
(6) The climb ceiling obtained from the Flight Planning and
Cruise Control Manual (FPCCM) must be reduced by 1,000 ft/door.''
Note 3: When a statement with the information specified in
paragraph (m)(2)(ii) of this AD has been included in the general
revisions of the AFM, the general revisions may be inserted into the
AFM, and the copy of this AD may be removed from the AFM.
Revise CDL
(n) For airplanes on which the door(s) have been removed in
accordance with paragraph (i)(3) of this AD: Within 30 days after
the effective date of this AD, do the revision specified in
paragraph (m)(2)(i) or (m)(2)(ii) of this AD, as applicable, and
remove any revision required by paragraph (i)(3)(i) or (i)(3)(ii) of
this AD.
No Reporting Required
(o) Although Bombardier Alert Service Bulletin A670BA-32-016,
Revision A, dated June 7, 2005, specifies to submit certain
information to the manufacturer, this AD does not include that
requirement.
Actions Accomplished According to Previous Issue of Service
Bulletin
(p) Actions accomplished before the effective date of this AD
according to Bombardier Alert Service Bulletin A670BA-32-016, dated
June 2, 2005, are considered acceptable for compliance with the
corresponding action specified in this AD.
Alternative Methods of Compliance (AMOCs)
(q)(1) The Manager, New York ACO, FAA, has the authority to
approve AMOCs for this AD, if requested in accordance with the
procedures found in 14 CFR 39.19.
(2) Before using any AMOC approved in accordance with Sec.
39.19 on any airplane to which the AMOC applies, notify the
appropriate principal inspector in the FAA Flight Standards
Certificate Holding District Office.
(3) AMOCs approved previously in accordance with AD 2003-19-51
are not approved as AMOCs with this AD.
Related Information
(r) Canadian airworthiness directive CF-2003-23R2, dated July
27, 2005, also addresses the subject of this AD.
Material Incorporated by Reference
(s) You must use Bombardier Alert Service Bulletin A670BA-32-
016, Revision A, dated June 7, 2005, excluding Appendix A, dated
June 2, 2005, and including Appendix B, dated June 2, 2005, to
perform the actions that are required by this AD, unless the AD
specifies otherwise. The Director of the Federal Register approved
the incorporation by reference of this document in accordance with 5
U.S.C. 552(a) and 1 CFR part 51. Contact Bombardier, Inc., Canadair,
Aerospace Group, P.O. Box 6087, Station Centre-ville, Montreal,
Quebec H3C 3G9, Canada, for a copy of this service information. You
may review copies at the Docket Management Facility, U.S. Department
of Transportation, 400 Seventh Street, SW., Room PL-401, Nassif
Building, Washington, DC; on the Internet at http://dms.dot.gov; or
at the National Archives and Records Administration (NARA). For
information on the availability of this material at the NARA, call
(202) 741-6030, or go to http://www.archives.gov/federal_register/code_of_federal_regulations/ibr_locations.html.
[[Page 38985]]
Issued in Renton, Washington, on June 28, 2006.
Kalene C. Yanamura,
Acting Manager, Transport Airplane Directorate, Aircraft Certification
Service.
[FR Doc. 06-6051 Filed 7-10-06; 8:45 am]
BILLING CODE 4910-13-U
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