```

[Federal Register Volume 77, Number 40 (Wednesday, February 29, 2012)]
[Rules and Regulations]
[Pages 12158-12163]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: 2012-4449]

=======================================================================
-----------------------------------------------------------------------

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2011-0994; Directorate Identifier 2010-NM-143-AD; 
Amendment 39-16949; AD 2012-03-08]
RIN 2120-AA64

Airworthiness Directives; Bombardier, Inc. Airplanes

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Final rule.

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

SUMMARY: We are superseding an existing airworthiness directive (AD) 
for certain Bombardier, Inc. Model CL-600-2C10 (Regional Jet Series 
700, 701, & 702), CL-600-2D15 (Regional Jet Series 705), and CL-600-
2D24 (Regional Jet Series 900) 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. That AD also reduces the repetitive inspection interval for 
certain airplanes. This new AD adds a new modification of the MLG door 
configuration, and removes certain airplanes from the applicability. 
This AD was prompted by further analysis of the MLG door by the 
manufacturer. 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 is effective April 4, 2012.
    The Director of the Federal Register approved the incorporation by 
reference of certain publications listed in the AD as of April 4, 2012.

ADDRESSES: For service information identified in this AD, contact 
Bombardier, Inc., 400 C[ocirc]te-Vertu Road West, Dorval, Qu[eacute]bec 
H4S 1Y9, Canada; telephone 514-855-5000; fax 514-855-7401; email 
thd.crj@aero.bombardier.com; Internet http://www.bombardier.com. You 
may review copies of the referenced 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.

Examining the AD Docket

    You may examine the AD docket on the Internet at http://www.regulations.gov; or in person at the Docket Management Facility 
between 9 a.m. and 5 p.m., Monday through Friday, except Federal 
holidays. The AD docket contains this AD, the regulatory evaluation, 
any comments received, and other information. The address for the 
Docket Office (phone: 800-647-5527) is Document Management Facility, 
U.S. Department of Transportation, Docket Operations, M-30, West 
Building Ground Floor, Room W12-140, 1200 New Jersey Avenue SE., 
Washington, DC 20590.

FOR FURTHER INFORMATION CONTACT: Aziz Ahmed, Aerospace Engineer, 
Airframe and Mechanical Systems Branch, ANE-171, FAA, New York Aircraft 
Certification Office (ACO), 1600 Stewart Avenue, Suite 410, Westbury, 
New York 11590; phone: 516-228-7329; fax: (516) 794-5531; email: 
aziz.ahmed@faa.gov.

SUPPLEMENTARY INFORMATION: 

Discussion

    We issued a notice of proposed rulemaking (NPRM) to amend 14 CFR 
part 39 to supersede AD 2006-14-05, Amendment 39-14676 (71 FR 38979, 
July 11, 2006). That AD applies to the specified products. The NPRM was 
published in the Federal Register on October 5, 2011 (76 FR 61633). 
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. In addition, that NPRM proposed to add a new 
modification of the MLG door configuration, and remove certain 
airplanes from the applicability.

Comments

    We gave the public the opportunity to participate in developing 
this AD. We have considered the comment received. The Air Line Pilots 
Association International supports the NPRM (76 FR 61633, October 5, 
2011).

Explanation of Changes Made to This AD

    We have revised certain headers throughout this AD. We have also 
revised the wording in paragraphs (q) and (s) of this AD; this change 
has not changed the intent of these paragraphs.

Conclusion

    We reviewed the available data, including the comment received, and 
determined that air safety and the public interest require adopting the 
AD with the changes described previously--and minor editorial changes. 
We have determined that these minor changes:
     Are consistent with the intent that was proposed in the 
NPRM (76 FR 61633, October 5, 2011) for correcting the unsafe 
condition; and
     Do not add any additional burden upon the public than was 
already proposed in the NPRM (76 FR 61633, October 5, 2011).

Costs of Compliance

    We estimate that this AD affects about 220 products of U.S. 
registry.
    The actions that are required by AD 2006-14-05, Amendment 39-14676 
(71 FR 38979, July 11, 2006), and retained in this AD take about 3 
work-hours per product, at an average labor rate of $85 per work hour. 
Based on these figures, the estimated cost of the currently required 
actions is $255 per product.
    We estimate that it will take about 115 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 the AD on U.S. 
operators to be $2,150,500, or $9,775 per product.

[[Page 12159]]

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),
    (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

0
1. The authority citation for part 39 continues to read as follows:

    Authority:  49 U.S.C. 106(g), 40113, 44701.

Sec.  39.13  [Amended]

0
2. The FAA amends Sec.  39.13 by removing airworthiness directive (AD) 
2006-14-05, Amendment 39-14676 (71 FR 38979, July 11, 2006), and adding 
the following new AD:

2012-03-08 Bombardier Inc.: Amendment 39-16949; Docket No. FAA-2011-
0994; Directorate Identifier 2010-NM-143-AD.

(a) Effective Date

    This airworthiness directive (AD) is effective April 4, 2012.

(b) Affected ADs

    This AD supersedes AD 2006-14-05, Amendment 39-14676 (71 FR 
38979, July 11, 2006).

(c) Applicability

    This AD applies to Bombardier, Inc. Model CL-600-2C10 (Regional 
Jet Series 700, 701, & 702) airplanes having serial numbers (S/Ns) 
10003 through 10230 inclusive; and Model CL-600-2D15 (Regional Jet 
Series 705) airplanes; and Model CL-600-2D24 (Regional Jet Series 
900) airplanes having S/Ns 15001 through 15053 inclusive, 15055, and 
15056; certificated in any category.

(d) Subject

    Air Transport Association (ATA) of America Code 32: Landing 
gear.

(e) Reason

    This AD was prompted by further analysis of the main landing 
gear (MLG) door by the manufacturer. 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.

(f) Compliance

    You are responsible for having the actions required by this AD 
performed within the compliance times specified, unless the actions 
have already been done.

(g) Restatement of Requirements of AD 2003-19-51, Amendment 39-13353 
(68 FR 61615, October 29, 2003), With Revised Serial Numbers and 
Service Information: Initial Compliance Time

    For Model CL-600-2C10 (Regional Jet series 700 & 701) series 
airplanes, S/Ns 10003 through 10230 inclusive; and Model CL-600-2D24 
(Regional Jet series 900) series airplanes, S/Ns 15002 through 15053 
inclusive, 15055, and 15056: Perform the initial inspection 
specified in paragraph (h) of this AD at the applicable time 
specified in paragraph (g)(1) or (g)(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, Amendment 
39-13353 (68 FR 61615, October 29, 2003)): Do the inspections before 
the accumulation of 1,050 total flight cycles, or within 50 flight 
cycles after August 15, 2006 (the effective date of AD 2006-14-05, 
Amendment 39-14676 (71 FR 38979, July 11, 2006)), 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 
August 15, 2006.

(h) Restatement of Requirements of AD 2003-19-51, Amendment 39-13353 
(68 FR 61615, October 29, 2003), With Revised Serial Numbers and 
Service Information: Inspections

    For Model CL-600-2C10 (Regional Jet series 700 & 701) series 
airplanes, S/Ns 10003 through 10230 inclusive; and Model CL-600-2D24 
(Regional Jet series 900) series airplanes, S/Ns 15002 through 15053 
inclusive, 15055 and 15056: At the applicable time specified in 
paragraph (g) 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 (h)(1), (h)(2), (h)(3), and (h)(4) of this AD; and 
Figures 1, 2, and 3 of this AD. 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-P

[[Page 12160]]

[GRAPHIC] [TIFF OMITTED] TR29FE12.001

[GRAPHIC] [TIFF OMITTED] TR29FE12.002

[[Page 12161]]

[GRAPHIC] [TIFF OMITTED] TR29FE12.003

BILLING CODE 4910-13-C

(i) Restatement of Requirements of AD 2003-19-51, Amendment 39-13353 
(68 FR 61615, October 29, 2003), With Revised Serial Numbers and 
Service Information: Repetitive Inspections

    If no cracking or deformation, or pulled or missing fastener, as 
applicable, is found during any inspection required by paragraph (h) 
or (i) of this AD, repeat the inspections thereafter at intervals 
not to exceed 100 flight cycles.

(j) Restatement of Requirements of AD 2003-19-51, Amendment 39-13353 
(68 FR 61615, October 29, 2003), With Revised Serial Numbers and 
Service Information: Corrective Actions

    If any cracking or deformation, or pulled or missing fastener, 
as applicable, is found during any inspection done in accordance 
with paragraph (h) or (i) of this AD: Before further flight, 
accomplish paragraph (j)(1), (j)(2), or (j)(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). Repeat 
the inspections specified in paragraph (h) of this AD at intervals 
not to exceed 100 flight cycles.

    Note 1 to paragraph (j)(2) of this AD: Guidance on replacing the 
lower panel assembly can be found in Task Cards 32-12-01-000-801-A01 
and 32-12-01-400-801-A01 of the Bombardier CRJ 700/900 Series 
Regional Jet Aircraft Maintenance Manual.

    (3) Remove the lower panel assembly, P/N CC670-10520, of the 
affected MLG door, and accomplish paragraph (j)(3)(i) or (j)(3)(ii) 
of this AD, 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.

(k) Restatement of Requirements of AD 2006-14-05, Amendment 39-14676 
(71 FR 38979, July 11, 2006), With Revised Service Information: Inboard 
MLG Door Inspections

    For all airplanes on which an inspection has not been done in 
accordance with paragraph (h) of this AD on or before August 15, 
2006: At the applicable time specified in paragraph (k)(1) or (k)(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

[[Page 12162]]

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; or Bombardier Alert Service Bulletin 
A670BA-32-016, Revision F, dated May 14, 2010, excluding Appendix A, 
dated June 2, 2005, and including Appendix B, dated June 2, 2005. 
Doing the inspections required by this paragraph terminates the 
actions required by paragraphs (g) through (j) of this AD. As of the 
effective date of this AD, use only Bombardier Alert Service 
Bulletin A670BA-32-016, Revision F, dated May 14, 2010, excluding 
Appendix A, dated June 2, 2005, and including Appendix B, dated June 
2, 2005.
    (1) For airplanes that have accumulated fewer than 1,500 total 
flight cycles as of August 15, 2006: Before the accumulation of 
1,000 total flight cycles, or within 50 flight cycles after August 
15, 2006, whichever occurs later.
    (2) For airplanes that have accumulated 1,500 flight cycles or 
more as of August 15, 2006: Within 10 flight cycles after August 15, 
2006.

(l) Restatement of Requirements of AD 2006-14-05, Amendment 39-14676 
(71 FR 38979, July 11, 2006), With Revised Service Information: Inboard 
MLG Door Inspections

    For airplanes on which an inspection has been done in accordance 
with paragraph (h) of this AD on or before August 15, 2006: At the 
applicable time specified in paragraph (l)(1) or (l)(2) of this AD, 
inspect installed door(s) as specified in paragraph (k) of this AD. 
Doing the inspections required by this paragraph terminates the 
actions required by paragraphs (g) through (j) 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 (h) 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 (l)(2)(i) and (l)(2)(ii) of 
this AD:
    (i) Within 450 flight cycles since the last inspection done in 
accordance with paragraph (h) of this AD.
    (ii) Within 100 flight cycles since the last inspection done in 
accordance with paragraph (h) of this AD, or within 50 cycles after 
August 15, 2006, whichever occurs later.

(m) Restatement of Requirements of AD 2006-14-05, Amendment 39-14676 
(71 FR 38979, July 11, 2006), With Revised Service Information: 
Repetitive Inspections

    If no damage is found during any inspection done in accordance 
with paragraph (k) of this AD, repeat the inspections specified in 
paragraph (k) of this AD thereafter at intervals not to exceed 100 
flight cycles.

(n) Restatement of Requirements of AD 2006-14-05, Amendment 39-14676 
(71 FR 38979, July 11, 2006), With Revised Service Information: 
Corrective Action--Replace or Remove MLG Door

    If any damage is found during any inspection done in accordance 
with paragraph (k) of this AD, before further flight, do the actions 
in paragraph (n)(1) or (n)(2) of this AD. Repeat the inspections 
specified in paragraph (k) 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; or Bombardier Alert 
Service Bulletin A670BA-32-016, Revision F, dated May 14, 2010, 
excluding Appendix A, dated June 2, 2005, and including Appendix B, 
dated June 2, 2005; except where those service bulletins specify 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 TCCA 
(or its delegated agent). As of the effective date of this AD, use 
only Bombardier Alert Service Bulletin A670BA-32-016, Revision F, 
dated May 14, 2010, excluding Appendix A, dated June 2, 2005, and 
including Appendix B, dated June 2, 2005.
    (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; or 
Bombardier Alert Service Bulletin A670BA-32-016, Revision F, dated 
May 14, 2010, excluding Appendix A, dated June 2, 2005, and 
including Appendix B, dated June 2, 2005; and accomplish paragraph 
(n)(2)(i) or (n)(2)(ii) of this AD, as applicable. As of the 
effective date of this AD, use only Bombardier Alert Service 
Bulletin A670BA-32-016, Revision F, dated May 14, 2010, excluding 
Appendix A, dated June 2, 2005, and including Appendix B, dated June 
2, 2005.
    (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 (j)(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 to paragraph (n)(2)(i) of this AD: When a statement with 
the information specified in paragraph (n)(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 (j)(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 to paragraph (n)(2)(ii) of this AD: When a statement with 
the information specified in paragraph (n)(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.

(o) Restatement of Requirements of AD 2006-14-05, Amendment 39-14676 
(71 FR 38979, July 11, 2006), With Revised Service Information: Revise 
CDL

    For airplanes on which the door(s) have been removed in 
accordance with paragraph (j)(3) of this AD: Within 30 days after 
August 15, 2006, do the revision specified in paragraph (n)(2)(i) or 
(n)(2)(ii) of this AD, as applicable, and remove any revision 
required by paragraph (j)(3)(i) or (j)(3)(ii) of this AD.

(p) Restatement of Requirements of AD 2006-14-05, Amendment 39-14676 
(71 FR 38979, July 11, 2006), With Revised Service Information: No 
Reporting Required

    Although 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 Bombardier 
Alert Service Bulletin A670BA-32-016, Revision F, dated May 14, 
2010, excluding Appendix A, dated June 2, 2005, and including 
Appendix B, dated June 2, 2005; specify to submit certain 
information to the manufacturer, this AD does not include that 
requirement.

[[Page 12163]]

(q) Restatement of Requirements of AD 2006-14-05, Amendment 39-14676 
(71 FR 38979, July 11, 2006), With Revised Service Information: Credit 
for Previous Actions

    This paragraph provides credit for actions required by 
paragraphs of (g) through (q) of this AD, if those actions were 
performed before August 15, 2006 (the effective date of AD 2006-14-
05, Amendment 39-14767 (71 FR 38979, July 11, 2006), using 
Bombardier Alert Service Bulletin A670BA-32-016, dated June 2, 2005.

(r) New Requirements of This AD: Terminating Modification for MLG Door 
Configuration

    Within 6,000 flight hours after the effective date of this AD, 
modify the MLG door, in accordance with the Accomplishment 
Instructions of Bombardier Service Bulletin 670BA-32-017, Revision 
C, dated May 14, 2010. Doing this modification terminates the 
requirements of this AD.

(s) New Requirements of This AD: Credit for Previous Actions

    This paragraph provides credit for the modification of the MLG 
door required by paragraph (r) of this AD, if the modification was 
performed before the effective date of this AD using Bombardier 
Service Bulletin 670BA-32-017, dated July 24, 2006; Revision A, 
dated September 26, 2006; or Revision B, dated July 31, 2008; as 
applicable.

(t) Other FAA AD Provisions

    The following provisions also apply to this AD:
    (1) Alternative Methods of Compliance (AMOCs): The Manager, New 
York ACO, ANE-170, FAA, has the authority to approve AMOCs for this 
AD, if requested using the procedures found in 14 CFR 39.19. 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, notify your appropriate principal inspector, or 
lacking a principal inspector, the manager of the local flight 
standards district office/certificate holding district office. The 
AMOC approval letter must specifically reference this AD. AMOCs 
approved previously in accordance with AD 2006-14-05, Amendment 39-
14676 (71 FR 38979, July 11, 2006), are acceptable for compliance 
with this AD.
    (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.

(u) Related Information

    Refer to MCAI TCCA Airworthiness Directive CF-2003-23R3, dated 
May 21, 2010, and the following service information for related 
information:
    (1) Bombardier Alert Service Bulletin A670BA-32-016, Revision F, 
dated May 14, 2010, excluding Appendix A, dated June 2, 2005, and 
including Appendix B, dated June 2, 2005.
    (2) Bombardier Service Bulletin 670BA-32-017, Revision C, dated 
May 14, 2010.

(v) Material Incorporated by Reference

    (1) You must use the following service information to do the 
actions required by this AD, unless the AD specifies otherwise. The 
Director of the Federal Register approved the incorporation by 
reference (IBR) of the following service information under 5 U.S.C. 
552(a) and 1 CFR part 51:
    (i) Bombardier Service Bulletin 670BA-32-017, Revision C, dated 
May 14, 2010.
    (ii) Bombardier Alert Service Bulletin A670BA-32-016, Revision 
F, dated May 14, 2010, excluding Appendix A, dated June 2, 2005, and 
including Appendix B, dated June 2, 2005.
    (2) For service information identified in this AD, contact 
Bombardier, Inc., 400 C[ocirc]te-Vertu Road West, Dorval, 
Qu[eacute]bec H4S 1Y9, Canada; telephone 514-855-5000; fax 514-855-
7401; email thd.crj@aero.bombardier.com; Internet http://www.bombardier.com.
    (3) 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.
    (4) 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/cfr/ibr_locations.html.

    Issued in Renton, Washington, on January 27, 2012.
Kalene C. Yanamura,
Acting Manager, Transport Airplane Directorate, Aircraft Certification 
Service.
[FR Doc. 2012-4449 Filed 2-28-12; 8:45 am]
BILLING CODE 4910-13-P
```