AD 2010-10-21 Airworthiness Directives; Bombardier, Inc. Model CL-600-2C10 (Regional Jet Series 700, 701, & 702) Airplanes, Model CL-600-2D15 (Regional Jet Series 705) Airplanes, and Model CL-600-2D24 (Regional Jet Series 900) Airplanes

This AD applies to Bombardier, Inc. Model CL-600-2C10 (Regional Jet Series 700, 701, & 702) airplanes, certificated in any category, having serial numbers 10003 through 10267 inclusive; and Bombardier Model CL-600-2D15 (Regional Jet Series 705) and CL-600-2D24 (Regional Jet Series 900) airplanes, certificated in any category, having serial numbers 15001 through 15199 inclusive, 15202, and 15204. 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 (g) 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.

Unless already done, do the following actions. (1) Within 6,000 flight hours after the effective date of this AD, modify the aircraft hydraulic system by installing thermal fuses according to the Accomplishment Instructions of Bombardier Service Bulletin 670BA-29-005, Revision A, dated January 29, 2009. Note 2: Guidance for accomplishing the modification required by paragraph (f)(1) of this AD can be found in Bombardier Service Non-Incorporated Engineering Order (SNIEO) KMM670-75007, Identifier S01, dated September 3, 2009, and SNIEO KMM670-75007, Identifier S02, dated September 11, 2009. (2) Before or concurrently with the actions required by paragraph (f)(1) of this AD, revise the Airworthiness Limitations Section (ALS) of the Instructions for Continued Airworthiness to incorporate the tasks identified in Table 1 of this AD as specified in Bombardier Temporary Revision (TR) 2-269, dated December 18, 2008, to Section 3, “Fuel Systems Limitations,” of Part 2 of the Bombardier CL-600-2C10, CL-600-2D15, and CL-600-2D24 Maintenance Requirements Manual. The initial compliance time for the task is within 10,000 flight hours after doing the action required by paragraph (f)(1) of this AD, or within 60 days after the effective date of this AD, whichever occurs later, and the limitation task must be accomplished thereafter at the “limiting interval” specified in Bombardier TR 2-269, dated December 18, 2008, except as provided by paragraphs (f)(4) and (g)(1) of this AD. Table 1—Fuel System Limitation Task Task No. Task description 29-30-00-603 Hydraulic System No. 1 and No. 2 Thermal Fuse: Discard the system No. 1 and No. 2 thermal fuse (Post Modsum 670T112042 or SB 670BA-29-005). (3) Before or concurrently with the actions required by paragraph (f)(1) of this AD, revise the ALS of the Instructions for Continued Airworthiness to incorporate the CDCCL data specified in Bombardier TR 2-268, dated December 18, 2008, to Section 3, “Fuel System Limitations,” of Part 2 of the Bombardier CL-600-2C10, CL-600-2D15 and CL-600-2D24 Maintenance Requirements Manual. Note 3: The actions required by paragraphs (f)(2) and (f)(3) of this AD may be done by inserting a copy of the TR into the maintenance requirements manual. When the TR has been included in the general revision of the maintenance program, the general revision may be inserted into the maintenance requirements manual, provided the relevant information in the general revision is identical to that in the TR, and the TR may be removed. (4) After accomplishing the actions specified in paragraphs (f)(2) and (f)(3) of this AD, no alternative limitation tasks, limitation task intervals, or CDCCLs may be used unless the limitation task, limitation task interval, or CDCCL is approved as an alternative method of compliance (AMOC) in accordance with the procedures specified in paragraph (g)(1) of this AD. (5) Actions accomplished before the effective date of this AD in accordance with Bombardier Service Bulletin 670BA-29-005, dated December 18, 2008, are considered acceptable for compliance with the corresponding action specified in paragraph (f)(1) of this AD. Note 4: Notwithstanding any other maintenance or operational requirements, components that have been identified as airworthy or installed on the affected airplanes before the revision of the ALS, as required by paragraphs (f)(2) and (f)(3) of this AD, do not need to be reworked in accordance with the CDCCLs. However, once the ALS has been revised, future maintenance actions on these components must be done in accordance with the CDCCLs. FAA AD Differences Note 5: 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 (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. (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 (h) Refer to MCAI Canadian Airworthiness Directive CF-2009-09, dated March 9, 2009; Bombardier Service Bulletin 670BA-29-005, Revision A, dated January 29, 2009; and Bombardier TR 2-268 and Bombardier TR 2-269, both dated December 18, 2008, both to Section 3, “Fuel System Limitations,” of Part 2 of the Bombardier CL-600-2C10, CL-600-2D15, and CL-600-2D24 Maintenance Requirements Manual; for related information. Material Incorporated by Reference (i) You must use the applicable service information specified in Table 2 of this AD, to do the actions required by this AD, unless the AD specifies otherwise. Table 2—Material Incorporated by Reference Document Revision Date Bombardier Service Bulletin 670BA-29-005 A January 29, 2009. Bombardier Temporary Revision 2-268 to Section 3, “Fuel System Limitations,” of Part 2 of the Bombardier CL-600-2C10, CL-600-2D15, and CL-600-2D24 Maintenance Requirements Manual Original December 18, 2008. Bombardier Temporary Revision 2-269 to Section 3, “Fuel System Limitations,” of Part 2 of the Bombardier CL-600-2C10, CL-600-2D15, and CL-600-2D24 Maintenance Requirements Manual Original December 18, 2008. (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 Côte-Vertu Road West, Dorval, Québec H4S 1Y9, Canada; telephone 514-855-5000; fax 514-855-7401; e-mail thd.crj@aero.bombardier.com; Internet http://www.bombardier.com. (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/code_of_federal_regulations/ibr_locations.html. Issued in Renton, Washington on May 3, 2010. Ali Bahrami, Manager, Transport Airplane Directorate, Aircraft Certification Service. [FR Doc. 2010-11183 Filed 5-14-10; 8:45 am] BILLING CODE 4910-13-P

Unless already done, do the following actions. (1) Within 6,000 flight hours after the effective date of this AD, modify the aircraft hydraulic system by installing thermal fuses according to the Accomplishment Instructions of Bombardier Service Bulletin 670BA-29-005, Revision A, dated January 29, 2009. Note 2: Guidance for accomplishing the modification required by paragraph (f)(1) of this AD can be found in Bombardier Service Non-Incorporated Engineering Order (SNIEO) KMM670-75007, Identifier S01, dated September 3, 2009, and SNIEO KMM670-75007, Identifier S02, dated September 11, 2009. (2) Before or concurrently with the actions required by paragraph (f)(1) of this AD, revise the Airworthiness Limitations Section (ALS) of the Instructions for Continued Airworthiness to incorporate the tasks identified in Table 1 of this AD as specified in Bombardier Temporary Revision (TR) 2-269, dated December 18, 2008, to Section 3, “Fuel Systems Limitations,” of Part 2 of the Bombardier CL-600-2C10, CL-600-2D15, and CL-600-2D24 Maintenance Requirements Manual. The initial compliance time for the task is within 10,000 flight hours after doing the action required by paragraph (f)(1) of this AD, or within 60 days after the effective date of this AD, whichever occurs later, and the limitation task must be accomplished thereafter at the “limiting interval” specified in Bombardier TR 2-269, dated December 18, 2008, except as provided by paragraphs (f)(4) and (g)(1) of this AD. Table 1—Fuel System Limitation Task Task No. Task description 29-30-00-603 Hydraulic System No. 1 and No. 2 Thermal Fuse: Discard the system No. 1 and No. 2 thermal fuse (Post Modsum 670T112042 or SB 670BA-29-005). (3) Before or concurrently with the actions required by paragraph (f)(1) of this AD, revise the ALS of the Instructions for Continued Airworthiness to incorporate the CDCCL data specified in Bombardier TR 2-268, dated December 18, 2008, to Section 3, “Fuel System Limitations,” of Part 2 of the Bombardier CL-600-2C10, CL-600-2D15 and CL-600-2D24 Maintenance Requirements Manual. Note 3: The actions required by paragraphs (f)(2) and (f)(3) of this AD may be done by inserting a copy of the TR into the maintenance requirements manual. When the TR has been included in the general revision of the maintenance program, the general revision may be inserted into the maintenance requirements manual, provided the relevant information in the general revision is identical to that in the TR, and the TR may be removed. (4) After accomplishing the actions specified in paragraphs (f)(2) and (f)(3) of this AD, no alternative limitation tasks, limitation task intervals, or CDCCLs may be used unless the limitation task, limitation task interval, or CDCCL is approved as an alternative method of compliance (AMOC) in accordance with the procedures specified in paragraph (g)(1) of this AD. (5) Actions accomplished before the effective date of this AD in accordance with Bombardier Service Bulletin 670BA-29-005, dated December 18, 2008, are considered acceptable for compliance with the corresponding action specified in paragraph (f)(1) of this AD. Note 4: Notwithstanding any other maintenance or operational requirements, components that have been identified as airworthy or installed on the affected airplanes before the revision of the ALS, as required by paragraphs (f)(2) and (f)(3) of this AD, do not need to be reworked in accordance with the CDCCLs. However, once the ALS has been revised, future maintenance actions on these components must be done in accordance with the CDCCLs. FAA AD Differences Note 5: 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 (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. (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 (h) Refer to MCAI Canadian Airworthiness Directive CF-2009-09, dated March 9, 2009; Bombardier Service Bulletin 670BA-29-005, Revision A, dated January 29, 2009; and Bombardier TR 2-268 and Bombardier TR 2-269, both dated December 18, 2008, both to Section 3, “Fuel System Limitations,” of Part 2 of the Bombardier CL-600-2C10, CL-600-2D15, and CL-600-2D24 Maintenance Requirements Manual; for related information. Material Incorporated by Reference (i) You must use the applicable service information specified in Table 2 of this AD, to do the actions required by this AD, unless the AD specifies otherwise. Table 2—Material Incorporated by Reference Document Revision Date Bombardier Service Bulletin 670BA-29-005 A January 29, 2009. Bombardier Temporary Revision 2-268 to Section 3, “Fuel System Limitations,” of Part 2 of the Bombardier CL-600-2C10, CL-600-2D15, and CL-600-2D24 Maintenance Requirements Manual Original December 18, 2008. Bombardier Temporary Revision 2-269 to Section 3, “Fuel System Limitations,” of Part 2 of the Bombardier CL-600-2C10, CL-600-2D15, and CL-600-2D24 Maintenance Requirements Manual Original December 18, 2008. (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 Côte-Vertu Road West, Dorval, Québec H4S 1Y9, Canada; telephone 514-855-5000; fax 514-855-7401; e-mail thd.crj@aero.bombardier.com; Internet http://www.bombardier.com. (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/code_of_federal_regulations/ibr_locations.html. Issued in Renton, Washington on May 3, 2010. Ali Bahrami, Manager, Transport Airplane Directorate, Aircraft Certification Service. [FR Doc. 2010-11183 Filed 5-14-10; 8:45 am] BILLING CODE 4910-13-P