Airworthiness Directives; Bombardier Model CL-600-2C10 (Regional Jet Series 700, 701, & 702) and Model CL-600-2D24 (Regional Jet Series 900) Airplanes, 4115-4117 [E9-23]

Download as PDF 4115 Rules and Regulations Federal Register Vol. 74, No. 14 Friday, January 23, 2009 This section of the FEDERAL REGISTER contains regulatory documents having general applicability and legal effect, most of which are keyed to and codified in the Code of Federal Regulations, which is published under 50 titles pursuant to 44 U.S.C. 1510. The Code of Federal Regulations is sold by the Superintendent of Documents. Prices of new books are listed in the first FEDERAL REGISTER issue of each week. DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA–2008–0540; Directorate Identifier 2008–NM–031–AD; Amendment 39–15786; AD 2009–01–07] RIN 2120–AA64 Airworthiness Directives; Bombardier Model CL–600–2C10 (Regional Jet Series 700, 701, & 702) and Model CL– 600–2D24 (Regional Jet Series 900) Airplanes AGENCY: Federal Aviation Administration (FAA), Department of Transportation (DOT). ACTION: Final rule. rwilkins on PROD1PC63 with RULES SUMMARY: We are adopting a new 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: Bombardier Aerospace has completed a system safety review of the CL–600–2C10/ CL–600–2D24 aircraft fuel system against new fuel tank safety standards, introduced in Chapter 525 of the Airworthiness Manual through Notice of Proposed Amendment (NPA) 2002–043. The identified noncompliances were assessed using Transport Canada Policy Letter No. 525–001 to determine if mandatory corrective action is required. This assessment showed that rupture of the fuel tank climb vent loop pipe or leakage from pipe couplings could result in fuel coming in contact with hot anti-ice ducts, creating potential fire on top of the centre fuel tank. * * * * * We are issuing this AD to require actions to correct the unsafe condition on these products. VerDate Nov<24>2008 16:34 Jan 22, 2009 Jkt 217001 DATES: This AD becomes effective February 27, 2009. The Director of the Federal Register approved the incorporation by reference of a certain publication listed in this AD as of February 27, 2009. ADDRESSES: You may examine the AD docket on the Internet at https:// 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: Richard Fiesel, 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) 228–7304; fax (516) 794–5531. SUPPLEMENTARY INFORMATION: Request To Revise Service Bulletin Reference 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 May 13, 2008 (73 FR 27475). That NPRM proposed to correct an unsafe condition for the specified products. The MCAI states: Conclusion Bombardier Aerospace has completed a system safety review of the CL–600–2C10/ CL–600–2D24 aircraft fuel system against new fuel tank safety standards, introduced in Chapter 525 of the Airworthiness Manual through Notice of Proposed Amendment (NPA) 2002–043. The identified noncompliances were assessed using Transport Canada Policy Letter No. 525–001 to determine if mandatory corrective action is required. This assessment showed that rupture of the fuel tank climb vent loop pipe or leakage from pipe couplings could result in fuel coming in contact with hot anti-ice ducts, creating potential fire on top of the centre fuel tank. To correct the unsafe condition, this directive mandates the modification of the fuel tank climb vent loop by installing shrouding boots that direct leaked fuel safely overboard. Differences Between This AD and the MCAI or Service Information 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 comment received. PO 00000 Frm 00001 Fmt 4700 Sfmt 4700 Comair requests that we refer to Revision C of Bombardier Service Bulletin 670BA–28–011, dated June 5, 2008, which Bombardier released since the NPRM was issued. (The NPRM referred to Revision B of Bombardier Service Bulletin 670BA–28–011, dated July 4, 2007.) We agree to incorporate Bombardier Service Bulletin 670BA–28–011, Revision C, and give credit for prior actions accomplished according to Bombardier Service Bulletin 670BA–28– 011, Revision B. Bombardier Service Bulletin 670BA–28–011, Revision C, revises a figure and its related instruction and includes editorial changes; there are no substantive changes to the remaining procedures. We have revised paragraphs (f)(1), (f)(2), and (h) of the AD accordingly. 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. We determined that these changes will not increase the economic burden on any operator or increase the scope of the AD. 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 We estimate that this AD will affect about 297 products of U.S. registry. We also estimate that it will take about 22 work-hours per product to comply with the basic requirements of this AD. The average labor rate is $80 per work-hour. Required parts will cost about $13,768 E:\FR\FM\23JAR1.SGM 23JAR1 4116 Federal Register / Vol. 74, No. 14 / Friday, January 23, 2009 / Rules and Regulations 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. 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 parts. As we do not control warranty coverage for affected parties, some parties may incur costs higher than estimated here. Based on these figures, we estimate the cost of this AD to the U.S. operators to be $4,611,816, or $15,528 per product. Authority for This Rulemaking Title 49 of the United States Code specifies the FAA’s authority to issue rules on aviation safety. Subtitle I, section 106, describes the authority of the FAA Administrator. ‘‘Subtitle VII: Aviation Programs,’’ describes in more detail the scope of the Agency’s authority. We are issuing this rulemaking under the authority described in ‘‘Subtitle VII, Part A, Subpart III, Section 44701: General requirements.’’ Under that section, Congress charges the FAA with promoting safe flight of civil aircraft in air commerce by prescribing regulations for practices, methods, and procedures the Administrator finds necessary for safety in air commerce. This regulation is within the scope of that authority because it addresses an unsafe condition that is likely to exist or develop on products identified in this rulemaking action. rwilkins on PROD1PC63 with RULES 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 https:// www.regulations.gov; or in person at the Docket Operations office between 9 a.m. and 5 p.m., Monday through Friday, VerDate Nov<24>2008 16:34 Jan 22, 2009 Jkt 217001 creating potential fire on top of the centre fuel tank. To correct the unsafe condition, this directive mandates the modification of the fuel tank climb vent loop by installing shrouding boots that direct leaked fuel safely overboard.’’ List of Subjects in 14 CFR Part 39 Air transportation, Aircraft, Aviation safety, Incorporation by reference, Safety. (f) Unless already done, do the following actions. (1) Within 4,500 flight hours after the effective date of this AD, modify the fuel tank climb vent loop pipes by installing shrouding boots according to the Accomplishment Instructions of Bombardier Service Bulletin 670BA–28–011, Revision C, dated June 5, 2008. (2) Modification of the climb vent pipe prior to the effective date of this AD according to Bombardier Service Bulletin 670BA–28–011, dated November 7, 2005; Revision A, dated January 22, 2007; or Revision B, dated July 4, 2007; is acceptable for compliance with the corresponding requirements of this AD. Adoption of the Amendment Accordingly, under the authority delegated to me by the Administrator, the FAA amends 14 CFR part 39 as follows: ■ PART 39—AIRWORTHINESS DIRECTIVES 1. The authority citation for part 39 continues to read as follows: ■ Authority: 49 U.S.C. 106(g), 40113, 44701. § 39.13 [Amended] 2. The FAA amends § 39.13 by adding the following new AD: ■ 2009–01–07 Bombardier, Inc. (Formerly Canadair): Amendment 39–15786. Docket No. FAA–2008–0540; Directorate Identifier 2008–NM–031–AD. Effective Date (a) This airworthiness directive (AD) becomes effective February 27, 2009. Affected ADs (b) None. Applicability (c) This AD applies to Model CL–600–2C10 (Regional Jet Series 700, 701, & 702) airplanes, serial numbers 10003 through 10169; and Model CL–600–2D24 (Regional Jet Series 900) airplanes, serial numbers 15001 though 15025; certificated in any category. Subject (d) Air Transport Association (ATA) of America Code 28: Fuel. Reason (e) The mandatory continuing airworthiness information (MCAI) states: ‘‘Bombardier Aerospace has completed a system safety review of the CL–600–2C10/ CL–600–2D24 aircraft fuel system against new fuel tank safety standards, introduced in Chapter 525 of the Airworthiness Manual through Notice of Proposed Amendment (NPA) 2002–043. The identified noncompliances were assessed using Transport Canada Policy Letter No. 525–001 to determine if mandatory corrective action is required. ‘‘This assessment showed that rupture of the fuel tank climb vent loop pipe or leakage from pipe couplings could result in fuel coming in contact with hot anti-ice ducts, PO 00000 Frm 00002 Fmt 4700 Sfmt 4700 Actions and Compliance FAA AD Differences Note: This AD differs from the MCAI and/ or service information as follows: No differences. Other FAA AD Provisions (g) The following provisions also apply to this AD: (1) Alternative Methods of Compliance (AMOCs): The Manager, New York Aircraft Certification Office, 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: Richard Fiesel, 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) 228–7304; fax (516) 794–5531. Before using any approved AMOC on any airplane to which the AMOC applies, notify your appropriate principal inspector (PI) in the FAA Flight Standards District Office (FSDO), or lacking a PI, your local FSDO. (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, the Office of Management and Budget (OMB) has approved the information collection requirements and has assigned OMB Control Number 2120–0056. Related Information (h) Refer to MCAI Canadian Airworthiness Directive CF–2008–01, dated January 3, 2008; and Bombardier Service Bulletin 670BA–28– 011, Revision C, dated June 5, 2008; for related information. E:\FR\FM\23JAR1.SGM 23JAR1 Federal Register / Vol. 74, No. 14 / Friday, January 23, 2009 / Rules and Regulations Material Incorporated by Reference (i) You must use Bombardier Service Bulletin 670BA–28–011, Revision C, dated June 5, 2008, to do the actions required by this AD, unless the AD specifies otherwise. (1) The Director of the Federal Register approved the incorporation by reference of this service information under 5 U.S.C. 552(a) and 1 CFR part 51. (2) For service information identified in ˆ this AD, contact Bombardier, Inc., 400 Cote´ Vertu Road West, Dorval, Quebec H4S 1Y9, Canada; telephone 514–855–5000; fax 514– 855–7401; e-mail thd.crj@aero.bombardier.com; Internet https:// www.bombardier.com. (3) You may review copies of the service information that is incorporated by reference at the FAA, Transport Airplane Directorate, 1601 Lind Avenue, SW., Renton, Washington. For information on the availability of this material at the FAA, call 425–227–1221 or 425–227–1152. (4) You may also review copies of the service information 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: https://www.archives.gov/federal_register/ code_of_federal_regulations/ ibr_locations.html . Issued in Renton, Washington, on December 18, 2008. Stephen P. Boyd, Assistant Manager, Transport Airplane Directorate, Aircraft Certification Service. [FR Doc. E9–23 Filed 1–22–09; 8:45 am] BILLING CODE 4910–13–P DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA–2007–28283; Directorate Identifier 2006–NM–254–AD; Amendment 39–15780; AD 2009–01–02] RIN 2120–AA64 Airworthiness Directives; Boeing Model 737–600, –700, –700C, –800 and –900 Series Airplanes rwilkins on PROD1PC63 with RULES AGENCY: Federal Aviation Administration (FAA), Department of Transportation (DOT). ACTION: Final rule. SUMMARY: The FAA is adopting a new airworthiness directive (AD) for certain Boeing Model 737–600, –700, –700C, –800 and –900 series airplanes. This AD requires a one-time general visual inspection of frames between body station (BS) 360 and BS 907 to determine if certain support brackets of the air conditioning (A/C) outlet extrusions are installed; medium- and high-frequency eddy current inspections for cracking of the frames around the VerDate Nov<24>2008 16:34 Jan 22, 2009 Jkt 217001 attachment holes of the subject brackets; and repair if necessary. This AD also requires installing new, improved fittings for all support brackets of the A/C outlet extrusions between BS 360 and BS 907. This AD results from numerous reports of multiple cracks in the frames around the attachment holes of certain support brackets of the A/C outlet extrusions. We are issuing this AD to prevent frame cracking, which, if not corrected, could lead to a severed frame that, combined with cracking of the skin lap splice above stringer 10, could result in rapid decompression of the airplane. DATES: This AD becomes effective February 27, 2009. The Director of the Federal Register approved the incorporation by reference of a certain publication listed in the AD as of February 27, 2009. ADDRESSES: For service information identified in this AD, contact Boeing Commercial Airplanes, Attention: Data & Services Management, P.O. Box 3707, MC 2H–65, Seattle, Washington 98124– 2207; telephone 206–544–5000, extension 1, fax 206–766–5680; e-mail me.boecom@boeing.com; Internet https://www.myboeingfleet.com. Examining the AD Docket You may examine the AD docket on the Internet at https:// 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 (telephone 800–647–5527) is the 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: Wayne Lockett, Aerospace Engineer, Airframe Branch, ANM–120S, FAA, Seattle Aircraft Certification Office, 1601 Lind Avenue, SW., Renton, Washington 98057–3356; telephone (425) 917–6447; fax (425) 917–6590. SUPPLEMENTARY INFORMATION: Discussion The FAA issued a supplemental notice of proposed rulemaking (NPRM) to amend 14 CFR part 39 to include an AD that would apply to certain Boeing Model 737–600, –700, –700C, –800 and –900 series airplanes. That supplemental NPRM was published in the Federal Register on August 19, 2008 (73 FR 48307). That supplemental PO 00000 Frm 00003 Fmt 4700 Sfmt 4700 4117 NPRM proposed to require a one-time general visual inspection of frames between body station (BS) 360 and BS 907 to determine if certain support brackets of the air conditioning (A/C) outlet extrusions are installed; mediumand high-frequency eddy current inspections for cracking of the frames around the attachment holes of the subject brackets; and repair if necessary. That supplemental NPRM also proposed to require installing new, improved fittings for all support brackets of the A/C outlet extrusions between BS 360 and BS 907. Comments We provided the public the opportunity to participate in the development of this AD. We have considered the comments received. Request To Revise ‘‘Estimated Costs’’ Table Boeing requests that we revise the ‘‘Estimated Costs’’ table in the Cost of Compliance paragraph of the supplemental NPRM to match the information specified in Boeing Special Attention Service Bulletin 737–25– 1544, Revision 1, dated January 16, 2008. Boeing states that the parts cost in the supplemental NPRM reflects a price range between $56,095 and $81,339, while the price range specified in the Boeing special attention service bulletin is between $19,854 and $28,789. We referred to the Boeing special attention service bulletin as the appropriate source of service information for doing the actions specified in the supplemental NPRM. We agree with the commenter’s request to revise the parts cost to match the information specified in Boeing Special Attention Service Bulletin 737– 25–1544, Revision 1, dated January 16, 2008. We have revised the parts cost to specify ‘‘between $19,854 and $28,789’’ and we have revised the corresponding ‘‘Cost per Airplane’’ and ‘‘Fleet Cost’’ columns in the ‘‘Estimated Costs’’ table of this AD. Request To Clarify the References to the Boeing Special Attention Service Bulletin Boeing requests that we clarify the references to Boeing Special Attention Service Bulletin 737–25–1544, Revision 1, dated January 16, 2008, in paragraphs (g), (g)(2), and (h) of the supplemental NPRM. Boeing states that the supplemental NPRM reads ‘‘* * * in accordance with Part 2 of the service bulletin * * *’’ when the reference is meant to be ‘‘* * * in accordance with Part 2 of the accomplishment instructions of the service bulletin. E:\FR\FM\23JAR1.SGM 23JAR1

Agencies

[Federal Register Volume 74, Number 14 (Friday, January 23, 2009)]
[Rules and Regulations]
[Pages 4115-4117]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: E9-23]



========================================================================
Rules and Regulations
                                                Federal Register
________________________________________________________________________

This section of the FEDERAL REGISTER contains regulatory documents 
having general applicability and legal effect, most of which are keyed 
to and codified in the Code of Federal Regulations, which is published 
under 50 titles pursuant to 44 U.S.C. 1510.

The Code of Federal Regulations is sold by the Superintendent of Documents. 
Prices of new books are listed in the first FEDERAL REGISTER issue of each 
week.

========================================================================


Federal Register / Vol. 74, No. 14 / Friday, January 23, 2009 / Rules 
and Regulations

[[Page 4115]]



DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2008-0540; Directorate Identifier 2008-NM-031-AD; 
Amendment 39-15786; AD 2009-01-07]
RIN 2120-AA64


Airworthiness Directives; Bombardier Model CL-600-2C10 (Regional 
Jet Series 700, 701, & 702) and Model CL-600-2D24 (Regional Jet Series 
900) Airplanes

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

ACTION: Final rule.

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

SUMMARY: We are adopting a new 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:

    Bombardier Aerospace has completed a system safety review of the 
CL-600-2C10/CL-600-2D24 aircraft fuel system against new fuel tank 
safety standards, introduced in Chapter 525 of the Airworthiness 
Manual through Notice of Proposed Amendment (NPA) 2002-043. The 
identified non-compliances were assessed using Transport Canada 
Policy Letter No. 525-001 to determine if mandatory corrective 
action is required.
    This assessment showed that rupture of the fuel tank climb vent 
loop pipe or leakage from pipe couplings could result in fuel coming 
in contact with hot anti-ice ducts, creating potential fire on top 
of the centre fuel tank.

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

DATES: This AD becomes effective February 27, 2009.
    The Director of the Federal Register approved the incorporation by 
reference of a certain publication listed in this AD as of February 27, 
2009.

ADDRESSES: You may examine the AD docket on the Internet at https://
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: Richard Fiesel, 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) 228-7304; 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 May 13, 2008 (73 FR 
27475). That NPRM proposed to correct an unsafe condition for the 
specified products. The MCAI states:

    Bombardier Aerospace has completed a system safety review of the 
CL-600-2C10/CL-600-2D24 aircraft fuel system against new fuel tank 
safety standards, introduced in Chapter 525 of the Airworthiness 
Manual through Notice of Proposed Amendment (NPA) 2002-043. The 
identified non-compliances were assessed using Transport Canada 
Policy Letter No. 525-001 to determine if mandatory corrective 
action is required.
    This assessment showed that rupture of the fuel tank climb vent 
loop pipe or leakage from pipe couplings could result in fuel coming 
in contact with hot anti-ice ducts, creating potential fire on top 
of the centre fuel tank.
    To correct the unsafe condition, this directive mandates the 
modification of the fuel tank climb vent loop by installing 
shrouding boots that direct leaked fuel safely overboard.

    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 comment received.

Request To Revise Service Bulletin Reference

    Comair requests that we refer to Revision C of Bombardier Service 
Bulletin 670BA-28-011, dated June 5, 2008, which Bombardier released 
since the NPRM was issued. (The NPRM referred to Revision B of 
Bombardier Service Bulletin 670BA-28-011, dated July 4, 2007.)
    We agree to incorporate Bombardier Service Bulletin 670BA-28-011, 
Revision C, and give credit for prior actions accomplished according to 
Bombardier Service Bulletin 670BA-28-011, Revision B. Bombardier 
Service Bulletin 670BA-28-011, Revision C, revises a figure and its 
related instruction and includes editorial changes; there are no 
substantive changes to the remaining procedures. We have revised 
paragraphs (f)(1), (f)(2), and (h) of the AD accordingly.

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. 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

    We estimate that this AD will affect about 297 products of U.S. 
registry. We also estimate that it will take about 22 work-hours per 
product to comply with the basic requirements of this AD. The average 
labor rate is $80 per work-hour. Required parts will cost about $13,768

[[Page 4116]]

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 parts. As we do not control warranty coverage for 
affected parties, some parties may incur costs higher than estimated 
here. Based on these figures, we estimate the cost of this AD to the 
U.S. operators to be $4,611,816, or $15,528 per product.

Authority for This Rulemaking

    Title 49 of the United States Code specifies the FAA's authority to 
issue rules on aviation safety. Subtitle I, section 106, describes the 
authority of the FAA Administrator. ``Subtitle VII: Aviation 
Programs,'' describes in more detail the scope of the Agency's 
authority.
    We are issuing this rulemaking under the authority described in 
``Subtitle VII, Part A, Subpart III, Section 44701: General 
requirements.'' Under that section, Congress charges the FAA with 
promoting safe flight of civil aircraft in air commerce by prescribing 
regulations for practices, methods, and procedures the Administrator 
finds necessary for safety in air commerce. This regulation is within 
the scope of that authority because it addresses an unsafe condition 
that is likely to exist or develop on products identified in this 
rulemaking action.

Regulatory Findings

    We determined that this AD will not have federalism implications 
under Executive Order 13132. This AD will not have a substantial direct 
effect on the States, on the relationship between the national 
government and the States, or on the distribution of power and 
responsibilities among the various levels of government.
    For the reasons discussed above, I certify this AD:
    1. Is not a ``significant regulatory action'' under Executive Order 
12866;
    2. Is not a ``significant rule'' under the DOT Regulatory Policies 
and Procedures (44 FR 11034, February 26, 1979); and
    3. Will not have a significant economic impact, positive or 
negative, on a substantial number of small entities under the criteria 
of the Regulatory Flexibility Act.
    We prepared a regulatory evaluation of the estimated costs to 
comply with this AD and placed it in the AD docket.

Examining the AD Docket

    You may examine the AD docket on the Internet at https://
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 adding the following new AD:

2009-01-07 Bombardier, Inc. (Formerly Canadair): Amendment 39-15786. 
Docket No. FAA-2008-0540; Directorate Identifier 2008-NM-031-AD.

Effective Date

    (a) This airworthiness directive (AD) becomes effective February 
27, 2009.

Affected ADs

    (b) None.

Applicability

    (c) This AD applies to Model CL-600-2C10 (Regional Jet Series 
700, 701, & 702) airplanes, serial numbers 10003 through 10169; and 
Model CL-600-2D24 (Regional Jet Series 900) airplanes, serial 
numbers 15001 though 15025; certificated in any category.

Subject

    (d) Air Transport Association (ATA) of America Code 28: Fuel.

Reason

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

    ``Bombardier Aerospace has completed a system safety review of 
the CL-600-2C10/CL-600-2D24 aircraft fuel system against new fuel 
tank safety standards, introduced in Chapter 525 of the 
Airworthiness Manual through Notice of Proposed Amendment (NPA) 
2002-043. The identified non-compliances were assessed using 
Transport Canada Policy Letter No. 525-001 to determine if mandatory 
corrective action is required.
    ``This assessment showed that rupture of the fuel tank climb 
vent loop pipe or leakage from pipe couplings could result in fuel 
coming in contact with hot anti-ice ducts, creating potential fire 
on top of the centre fuel tank.
    To correct the unsafe condition, this directive mandates the 
modification of the fuel tank climb vent loop by installing 
shrouding boots that direct leaked fuel safely overboard.''

Actions and Compliance

    (f) Unless already done, do the following actions.
    (1) Within 4,500 flight hours after the effective date of this 
AD, modify the fuel tank climb vent loop pipes by installing 
shrouding boots according to the Accomplishment Instructions of 
Bombardier Service Bulletin 670BA-28-011, Revision C, dated June 5, 
2008.
    (2) Modification of the climb vent pipe prior to the effective 
date of this AD according to Bombardier Service Bulletin 670BA-28-
011, dated November 7, 2005; Revision A, dated January 22, 2007; or 
Revision B, dated July 4, 2007; is acceptable for compliance with 
the corresponding requirements of this AD.

FAA AD Differences

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

Other FAA AD Provisions

    (g) The following provisions also apply to this AD:
    (1) Alternative Methods of Compliance (AMOCs): The Manager, New 
York Aircraft Certification Office, 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: Richard Fiesel, 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) 228-7304; fax (516) 794-
5531. Before using any approved AMOC on any airplane to which the 
AMOC applies, notify your appropriate principal inspector (PI) in 
the FAA Flight Standards District Office (FSDO), or lacking a PI, 
your local FSDO.
    (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, the 
Office of Management and Budget (OMB) has approved the information 
collection requirements and has assigned OMB Control Number 2120-
0056.

Related Information

    (h) Refer to MCAI Canadian Airworthiness Directive CF-2008-01, 
dated January 3, 2008; and Bombardier Service Bulletin 670BA-28-011, 
Revision C, dated June 5, 2008; for related information.

[[Page 4117]]

Material Incorporated by Reference

    (i) You must use Bombardier Service Bulletin 670BA-28-011, 
Revision C, dated June 5, 2008, to do the actions required by this 
AD, unless the AD specifies otherwise.
    (1) The Director of the Federal Register approved the 
incorporation by reference of this service information under 5 
U.S.C. 552(a) and 1 CFR part 51.
    (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; e-mail thd.crj@aero.bombardier.com; Internet https://
www.bombardier.com.
    (3) You may review copies of the service information that is 
incorporated by reference at the FAA, Transport Airplane 
Directorate, 1601 Lind Avenue, SW., Renton, Washington. For 
information on the availability of this material at the FAA, call 
425-227-1221 or 425-227-1152.
    (4) You may also review copies of the service information 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: https://www.archives.gov/federal_register/code_of_federal_
regulations/ibr_locations.html .

    Issued in Renton, Washington, on December 18, 2008.
Stephen P. Boyd,
Assistant Manager, Transport Airplane Directorate, Aircraft 
Certification Service.
 [FR Doc. E9-23 Filed 1-22-09; 8:45 am]
BILLING CODE 4910-13-P
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