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[Federal Register: October 5, 2010 (Volume 75, Number 192)]
[Rules and Regulations]               
[Page 61348-61352]
From the Federal Register Online via GPO Access [wais.access.gpo.gov]
[DOCID:fr05oc10-7]                         

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

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2010-0276; Directorate Identifier 2009-NM-144-AD; 
Amendment 39-16452; AD 2010-20-17]
RIN 2120-AA64

 
Airworthiness Directives; Bombardier, Inc. Model CL-600-2B19 
(Regional Jet Series 100 & 440) Airplanes

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:

    Three cases of in-flight loss of cabin pressurization have been 
reported, resulting from failure of a bulkhead check valve in 
combination with failure of an air supply duct.
    In addition to mandating inspection, rework and/or replacement 
of the air supply ducts, Airworthiness Directive (AD) CF-2003-05 
(subsequently revised to CF-2003-05R1) [which corresponds to FAA AD 
2004-22-08] mandated the incorporation of a 4000 flight-hour 
repetitive inspection task for bulkhead check valves, Part Numbers 
(P/N) 92E20-3 and 92E20-4, into the approved maintenance schedule. 
However, this repetitive inspection task has since been superseded 
by a 3000 flight-hour periodic discard task for these bulkhead check 
valves.
    This directive mandates revision of the approved maintenance 
schedule to incorporate the discard task for bulkhead check valves, 
P/N 92E20-3 and 92E20-4, and supersedes the instructions in 
Corrective Actions, Part A, of AD CF-2003-05R1, dated 7 February 
2006.

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

DATES: This AD becomes effective November 9, 2010.
    The Director of the Federal Register approved the incorporation by 
reference of a certain publication listed in this AD as of November 9, 
2010.
    On December 2, 2004 (69 FR 62807, October 28, 2004), the Director 
of the Federal Register 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: Christopher Alfano, Airframe and 
Mechanical Systems Branch, ANE-171, FAA, New York Aircraft 
Certification Office (ACO), 1600 Stewart Avenue, Suite 410, Westbury, 
New York 11590; telephone (516) 228-7340; 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 April 5, 2010 (75 FR 
17086). That NPRM proposed to correct an unsafe condition for the 
specified products. The MCAI states:

    Three cases of in-flight loss of cabin pressurization have been 
reported, resulting from failure of a bulkhead check valve in 
combination with failure of an air supply duct.
    In addition to mandating inspection, rework and/or replacement 
of the air supply ducts, Airworthiness Directive (AD) CF-2003-05 
(subsequently revised to CF-2003-05R1) [which corresponds to FAA AD 
2004-22-08] mandated the incorporation of a 4000 flight-hour 
repetitive inspection task for bulkhead check valves, Part Numbers 
(P/N) 92E20-3 and 92E20-4, into the approved maintenance schedule. 
However, this repetitive inspection task has since been superseded 
by a 3000 flight-hour periodic discard task for these bulkhead check 
valves.
    This directive mandates revision of the approved maintenance 
schedule to incorporate the discard task for bulkhead check valves, 
P/N 92E20-3 and 92E20-4, and supersedes the instructions in 
Corrective Actions, Part A, of AD CF-2003-05R1, dated 7 February 
2006.

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 considered the comments received.

Request to Provide Credit for Actions Accomplished Per Previous Issue 
of Service Bulletin

    Air Wisconsin requests that credit be provided for actions 
accomplished in accordance with a previous issue of a service bulletin. 
Air Wisconsin states that paragraph (g)(3) of the NPRM specifies that 
actions accomplished in accordance with Bombardier Alert Service 
Bulletin A601R-21-053, dated November 8, 2001, are considered 
acceptable for compliance; however, paragraph (i) of the NPRM states 
that Bombardier Alert Service Bulletin A601R-21-053, Revision `A,' 
dated January 28, 2003, needs to be accomplished. Air Wisconsin states 
that the NPRM should provide credit for actions accomplished in 
accordance with Bombardier Alert Service Bulletin A601R-21-053, dated 
November 8, 2001; and Revision `A,' dated January 28, 2003. Air 
Wisconsin states that Revision `A' did not affect airplanes on which 
actions were accomplished in accordance with the original issue of that 
service bulletin. Air Wisconsin states that its affected airplanes were 
modified in accordance with Bombardier Alert Service Bulletin A601R-21-
053, dated November 8, 2001.
    We agree that credit should be given for actions done in accordance 
with Bombardier Alert Service Bulletin A601R-21-053, dated November 8, 
2001, and note that this AD does provide credit. In the ``Restatement 
of Requirements of AD 2004-22-08, Amendment 39-13836'' section of this 
AD, we refer to the latest revision of the service bulletin, Bombardier 
Alert Service Bulletin A601R-21-053, Revision `A,' dated January 28, 
2003, for accomplishing the actions specified in paragraphs (h) and (i) 
of this AD. In paragraph (g)(3) of this AD, we provide credit for 
actions done before December 2, 2004 (the effective date of AD 2004-22-
08) in accordance with Bombardier Alert Service Bulletin A601R-21-053, 
dated November 8, 2001, with the corresponding actions in paragraphs 
specified in paragraphs (h) and (i) of this AD. We have not changed the 
AD in regard to this issue. Norman -Payroll No: 68828 -Folios: 14-17 -
Date: 10/01/10[FEDREG][VOL]*[/VOL][NO]*[/NO][DATE]*[/
DATE][RULES][RULE][PREAMB][AGENCY]*[/AGENCY][SUBJECT]*[/SUBJECT][/
PREAMB][SUPLINF][HED]*[/HED]?>

Request To Clarify the Requirements of Paragraph (j) of the NPRM

    Comair, Inc. (Comair) notes that paragraph (j) of the NPRM proposes 
to revise the Airworthiness Limitations

[[Page 61349]]

section of the Instructions for Continued Airworthiness to include the 
information in Bombardier Temporary Revision (TR) 1-2-39, dated 
December 12, 2008, to Section 2--Systems and Powerplant Program, of 
Part 1 of the Bombardier CL-600-2B19 Maintenance Requirement Manual 
(MRM). Comair states that the MRM is not structured to incorporate Part 
1 items into Part 2 of the MRM. Comair notes that Note 3 of the NPRM 
allows the TR to be removed once the information in TR 1-2-39 has been 
incorporated into a general revision. Comair notes that Revision 14, 
dated September 10, 2009, of the MRM has incorporated the information 
in TR 1-2-39.
    We infer that Comair is requesting that we clarify the requirements 
of paragraph (j) of the NPRM. We agree that clarification is necessary. 
The intent of revising Part 2 of the Airworthiness Limitations section 
is to prohibit approval of any alternative replacement times or 
structural inspection intervals for this bulkhead check valve. But, we 
have clarified Note 3 of this AD to specify Part 2 of the Airworthiness 
Limitations section of the MRM. Note 3 of this AD states that the 
actions required by paragraph (j) of this AD may be done by inserting a 
copy of Bombardier TR 1-2-39, dated December 12, 2008, into the MRM, 
which introduces Bombardier Task 21-51-21-13. When Bombardier Task 21-
51-21-13 has been included in general revisions of the MRM, the general 
revisions may be inserted into Part 2 of the Airworthiness Limitations 
section of the MRM, provided the relevant information in the general 
revision is identical to that in the TR.

Request To Clarify the Intent of Paragraph (j) of the NPRM

    Comair states that if the intent of paragraph (j) of the NPRM is to 
introduce the task into its proper part of the MRM, that is, Part 1, 
then doing so would contradict the rationale the FAA previously 
provided in AD 2004-22-08, Amendment 39-13836, (69 FR 62807, October 
28, 2004). In AD 2004-22-08, the FAA responded to two requests to 
consider the MRM Task Number 21-51-21-07 as an alternative to using 
Bombardier Alert Service Bulletin A601R-21-054, dated November 8, 2001. 
Comair points out that in AD 2004-22-08 the FAA stated, ``Although Part 
1 of the MRM is accepted by the FAA, it is not approved, as is Part 2 
of the Airworthiness Limitations section. We cannot control revisions 
of the MRM; therefore, a task could be changed or deleted, and the AD 
requirements would be modified without our approval.'' Comair points 
out that by mandating the TR, the FAA is now requiring the 
documentation that it previously rejected incorporating in AD 2004-22-
08.
    We infer that Comair is requesting clarification of the 
requirements of paragraph (j) of the NPRM. While the FAA reviews and 
acknowledges the contents of Part 1 of the MRM, Part 1 does not require 
FAA approval to be changed. Consequently, the FAA cannot control 
revisions to this section of the MRM. However, the FAA does approve the 
contents of Part 2 of the MRM, which becomes legally enforceable. A 
task may be altered or deleted and may nullify the intent of the AD. 
However, operators may request approval of an AMOC to allow the use of 
a particular task card, provided a specified revision and date are 
adhered to. Any subsequent revisions would require a new AMOC request 
to ensure that the AD requirements are still met. We have not changed 
the AD in regard to this issue.

Request To Allow Continuation of Previously Issued AMOCs

    Comair requests that paragraph (l)(1) of the NPRM be revised to 
accept previously issued AMOCs. Comair states that it has received 
AMOCs from the New York Aircraft Certification Office that have allowed 
it to perform inspections using Comair task cards for complying with 
MRM Task 21-51-21-07 instead of Bombardier Alert Service Bulletin 
A601R-21-054, dated November 8, 2001.
    We agree that the previously issued AMOCs to Comair continue to 
meet the requirements of this AD because they incorporated the bulkhead 
check valve discard task that is required by paragraph (j) of this AD. 
While we are not accepting all previously issued AMOCs that were 
granted for AD 2004-22-08, we have revised paragraph (l)(1) of this AD 
to accept those two specific AMOCs granted to Comair.

Conclusion

    We reviewed the available data, including the comments received, 
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.

Costs of Compliance

    Based on the service information, we estimate that this AD affects 
about 644 products of U.S. registry.
    The actions that are required by AD 2004-22-08 and retained in this 
AD take about 15 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 
$1,869 per product.
    We estimate that it takes about 1 work-hour per product to comply 
with the new requirement to revise the ALI. The average labor rate is 
$85 per work-hour. Based on these figures, we estimate the cost of this 
requirement of the AD on U.S. operators to be $54,740, or $85 per 
product.
    We estimate that it takes about 5 work-hours per product to comply 
with the new inspection requirement. The average labor rate is $85 per 
work-hour. Required parts would cost about $594 per product, per 
replacement cycle. 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 
inspection requirements of the AD on U.S. operators to be $656,236, or 
$1,019 per product, per replacement cycle.

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

[[Page 61350]]

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

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 FAA amends Sec.  39.13 by removing Amendment 39-13836 (69 FR 
62807, October 28, 2004) and adding the following new AD:

2010-20-17 Bombardier, Inc.: Amendment 39-16452. Docket No. FAA-
2010-0276; Directorate Identifier 2009-NM-144-AD.

Effective Date

    (a) This airworthiness directive (AD) becomes effective November 
9, 2010.

Affected ADs

    (b) This AD supersedes AD 2004-22-08, Amendment 39-13836.

Applicability

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

    Note 1: This AD requires revisions to certain operator 
maintenance documents to include new inspections. Compliance with 
these inspections is required by 14 CFR 91.403(c). For airplanes 
that have been previously modified, altered, or repaired in the 
areas addressed by these inspections, the operator may not be able 
to accomplish the inspections described in the revisions. In this 
situation, to comply with 14 CFR 91.403(c), the operator must 
request approval for an alternative method of compliance according 
to paragraph (l) of this AD. The request should include a 
description of changes to the required inspections that will ensure 
the continued operational safety of the airplane.

Subject

    (d) Air Transport Association (ATA) of America Code 21: Air 
conditioning.

Reason

    (e) The mandatory continuing airworthiness information (MCAI) 
states:
    Three cases of in-flight loss of cabin pressurization have been 
reported, resulting from failure of a bulkhead check valve in 
combination with failure of an air supply duct.
    In addition to mandating inspection, rework and/or replacement 
of the air supply ducts, Airworthiness Directive (AD) CF-2003-05 
(subsequently revised to CF-2003-05R1) [which corresponds to FAA AD 
2004-22-08] mandated the incorporation of a 4 000 flight-hour 
repetitive inspection task for bulkhead check valves, Part Numbers 
(P/N) 92E20-3 and 92E20-4, into the approved maintenance schedule. 
However, this repetitive inspection task has since been superseded 
by a 3000 flight-hour periodic discard task for these bulkhead check 
valves.
    This directive mandates revision of the approved maintenance 
schedule to incorporate the discard task for bulkhead check valves, 
P/N 92E20-3 and 92E20-4, and supersedes the instructions in 
Corrective Actions, Part A, of AD CF-2003-05R1, dated 7 February 
2006.

Compliance

    (f) 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 2004-22-08, Amendment 39-13836:

Service Information Clarifications

    (g) Paragraphs (g)(1), (g)(2), and (g)(3) of this AD pertain to 
the service information referenced in this AD.
    (1) Although Bombardier Alert Service Bulletin A601R-21-053, 
Revision `A,' dated January 28, 2003; and Bombardier Alert Service 
Bulletin A601R-21-054, dated November 8, 2001; specify to submit 
certain information to the manufacturer, this AD does not include 
such a requirement.
    (2) Bombardier Alert Service Bulletin A601R-21-054, dated 
November 8, 2001, recommends sending all damaged check valves to the 
manufacturer for analysis; however, this AD does not include that 
requirement.
    (3) Accomplishment of the actions specified in Bombardier Alert 
Service Bulletin A601R-21-053, dated November 8, 2001, before 
December 2, 2004 (the effective date of AD 2004-22-08), is 
considered acceptable for compliance with the applicable actions 
specified in this AD.

Repetitive Inspections/Related Corrective Actions

    (h) Within 500 flight hours after December 2, 2004: Do the 
detailed inspections and related corrective actions required by 
paragraphs (h)(1) and (h)(2) of this AD, per the Accomplishment 
Instructions of Bombardier Alert Service Bulletin A601R-21-053, 
Revision `A,' dated January 28, 2003; and Bombardier Alert Service 
Bulletin A601R-21-054, dated November 8, 2001; as applicable.
    (1) For airplanes having bulkhead check valves with part number 
(P/N) 92E20-3/-4, as identified in Bombardier Alert Service Bulletin 
A601R-21-054, dated November 8, 2001: Inspect the left- and right-
hand bulkhead check valves for damage (cracking, breakage). If any 
damage is found, before further flight, replace the damaged valve. 
Repeat the inspection at intervals not to exceed 4,000 flight hours 
until the replacement required by paragraph (j) of this AD is done.
    (2) For airplanes having serial numbers 7003 through 7067 
inclusive, and 7069 through 7477 inclusive: Inspect the left- and 
right-hand air supply ducts of the rear bulkhead for damage 
(tearing, delamination, or cracking). If any damage is found, before 
further flight, either rework or replace the damaged air supply 
duct, which ends the inspections for that air supply duct only. If 
no damage is found, repeat the inspection thereafter at intervals 
not to exceed 500 flight hours until accomplishment of paragraph (i) 
of this AD.

    Note 2: 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,

[[Page 61351]]

magnifying lenses, etc., may be used. Surface cleaning and elaborate 
access procedures may be required.''

Terminating Action for Repetitive Inspections of Air Supply Ducts

    (i) Except as required by paragraph (h)(2) of this AD, for 
airplanes having serial numbers 7003 through 7067 inclusive, and 
7069 through 7477 inclusive: Within 5,000 flight hours after 
December 2, 2004, either rework or replace the left- and right-hand 
air ducts, as applicable, per the Accomplishment Instructions of 
Bombardier Alert Service Bulletin A601R-21-053, Revision `A,' dated 
January 28, 2003; and Bombardier Alert Service Bulletin A601R-21-
054, dated November 8, 2001; as applicable. Accomplishment of this 
paragraph ends the repetitive inspections required by paragraph 
(h)(2) of this AD.

New Requirements of This AD:

Actions and Compliance

    (j) For airplanes having serial numbers 7003 and subsequent: 
Within 60 days after the effective date of this AD, revise the 
Airworthiness Limitations section of the Instructions for Continued 
Airworthiness to include the information in Bombardier Temporary 
Revision (TR) 1-2-39, dated December 12, 2008, to Section 2--Systems 
and Powerplant Program, of Part 1 of the Bombardier CL-600-2B19 
Maintenance Requirement Manual (MRM). This task requires replacement 
of the bulkhead check valves having P/N 92E20-3 or 92E20-4 at 
intervals not to exceed 3,000 flight hours. Operate the airplane 
thereafter according to the limitations and procedures in the TR.
    (k) Thereafter, except as provided in paragraph (j) of this AD, 
no alternative replacement times or structural inspection intervals 
may be approved for this bulkhead check valve.

    Note 3:  The actions required by paragraph (j) of this AD may be 
done by inserting a copy of Bombardier TR 1-2-39, dated December 12, 
2008, into the MRM, which introduces Task 21-51-21-13. When 
Bombardier Task 21-51-21-13 has been included in general revisions 
of the MRM, the general revisions may be inserted into Part 2 of the 
Airworthiness Limitations section of the MRM, provided the relevant 
information in the general revision is identical to that in the TR.

FAA AD Differences

    Note 4: This AD differs from the MCAI and/or service information 
as follows: No differences.

Other FAA AD Provisions

    (l) The following provisions also apply to this AD:
    (1) Alternative Methods of Compliance (AMOCs): The Manager, New 
York Aircraft Certification Office (ACO), ANE-170, FAA, has the 
authority to approve AMOCs for this AD, if requested using the 
procedures found in 14 CFR 39.19. 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. The AMOC approval letter must 
specifically reference this AD. Two AMOCs approved previously in 
accordance with AD 2004-22-08, Amendment 39-13836, are approved as 
AMOCs for the corresponding provisions of this AD. These two 
approved AMOCs are identified in paragraphs (l)(1)(i) and (l)(1)(ii) 
of this AD. All other AMOCs approved previously in accordance with 
AD 2004-22-08, Amendment 39-13836, are not approved as AMOCs with 
this AD.
    (i) An AMOC approved by the New York ACO on November 17, 2004, 
in response to Comair AMOC request memo, dated November 10, 2004.
    (ii) An AMOC approved by the New York ACO on October 13, 2006, 
in response to Comair AMOC request memo, dated September 19, 2006.
    (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

    (m) Refer to MCAI Canadian Airworthiness Directive CF-2009-31, 
dated July 8, 2009; and the service information specified in Table 1 
of this AD for related information.

                                          Table 1--Related Information
----------------------------------------------------------------------------------------------------------------
               Document                               Revision                               Date
----------------------------------------------------------------------------------------------------------------
Bombardier TR 1-2-39 to Section 2--     Original...........................  December 12, 2008.
 Systems and Powerplant Program, of
 Part 1 of the Bombardier CL-600-2B19
 MRM.
Bombardier Alert Service Bulletin       `A'................................  January 28, 2003.
 A601R-21-053.
Bombardier Alert Service Bulletin       Original...........................  November 8, 2001.
 A601R-21-054.
----------------------------------------------------------------------------------------------------------------

Material Incorporated by Reference

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

                                   Table 2--Material Incorporated by Reference
----------------------------------------------------------------------------------------------------------------
               Document                               Revision                               Date
----------------------------------------------------------------------------------------------------------------
Bombardier Temporary Revision (TR) 1-2- Original...........................  December 12, 2008.
 39 to Section 2--Systems and
 Powerplant Program, of Part 1 of the
 Bombardier CL-600-2B19 Maintenance
 Requirement Manual (MRM).
Bombardier Alert Service Bulletin       `A'................................  January 28, 2003.
 A601R-21-053.
Bombardier Alert Service Bulletin       Original...........................  November 8, 2001.
 A601R-21-054.
----------------------------------------------------------------------------------------------------------------

     (1) The Director of the Federal Register approved the 
incorporation by reference of Bombardier TR 1-2-39, dated December 
12, 2008, to Section 2--Systems and Powerplant Program, of Part 1 of 
the Bombardier CL-600-2B19 MRM, under 5 U.S.C. 552(a) and 1 CFR part 
51.
    (2) The Director of the Federal Register previously approved the 
incorporation by reference of Bombardier Alert Service Bulletin 
A601R-21-053, Revision `A,' dated January 28, 2003; and Bombardier 
Alert Service Bulletin A601R-21-054, dated November 8, 2001; on 
December 2, 2004 (69 FR 62807, October 28, 2004).
    (3) 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; e-mail

[[Page 61352]]

thd.crj@aero.bombardier.com; Internet http://www.bombardier.com.
    (4) 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.
    (5) 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/ibr_locations.html.

    Issued in Renton, Washington, on September 16, 2010.
Robert D. Breneman,
Acting Manager, Transport Airplane Directorate, Aircraft Certification 
Service.
[FR Doc. 2010-24256 Filed 10-4-10; 8:45 am]
BILLING CODE 4910-13-P
```