AD 2010-20-09 Airworthiness Directives; Bombardier, Inc. Model CL-600-2B19 (Regional Jet Series 100 & 440) Airplanes; Model CL-600-2C10 (Regional Jet Series 700, 701, & 702) Airplanes; Model CL-600-2D15 (Regional Jet Series 705) and Model CL-600-2D24 (Regional Jet Series 900) Airplanes

This AD applies to Bombardier, Inc. Model CL-600-2B19 (Regional Jet Series 100 & 440) airplanes, serial numbers 7305 through 7990 inclusive and 8000 and subsequent; Model CL-600-2C10 (Regional Jet Series 700, 701, & 702) airplanes, serial numbers 10003 and subsequent; Model CL-600-2D15 (Regional Jet Series 705) and Model CL-600-2D24 (Regional Jet Series 900) airplanes, serial numbers 15001 and subsequent; certificated in any category.

You are responsible for having the actions required by this AD performed within the compliance times specified, unless the actions have already been done. Actions (g) For Model CL-600-2C10, CL-600-2D15 and CL-600-2D24 airplanes: At the earliest of the times identified in paragraphs (g)(1), (g)(2), (g)(3), and (g)(4) of this AD, do an inspection to determine the serial number of the installed air-driven generator (ADG), in accordance with the Accomplishment Instructions of the applicable service bulletin listed in Table 1 of this AD. A review of airplane maintenance records is acceptable in lieu of this inspection if the serial number of the ADG can be conclusively identified from that review. (1) Within 4,000 flight hours or 18 months after the effective date of this AD, whichever occurs first; or (2) Prior to the next in-flight or on-ground functional check of the ADG, whichever occurs first after the effective date of this AD; or (3) Prior to the next in-flight or on-ground operational check of the ADG, whichever occurs first after the effective date of this AD; or (4) Before the next scheduled ADG in-flight deployment. (h) For Model CL-600-2B19 airplanes: At the earliest of the times identified in paragraphs (h)(1), (h)(2), (h)(3), and (h)(4) of this AD, do an inspection to determine the serial number of the installed ADG, in accordance with the Accomplishment Instructions of the applicable service bulletin listed in Table 1 of this AD. A review of airplane maintenance records is acceptable in lieu of this inspection if the part number of the ADG can be conclusively identified from that review. (1) Within 4,000 flight hours after the effective date of this AD; or (2) Prior to the next in-flight or on-ground functional check of the ADG, whichever occurs first after the effective date of this AD; or (3) Prior to the next in-flight or on-ground operational check of the ADG, whichever occurs first after the effective date of this AD; or (4) Before the next scheduled ADG in-flight deployment. Table 1—Service Bulletins Model— Bombardier Service Bulletin— Revision— Dated— CL-600-2B19 airplanes 601R-24-127 A February 25, 2010. CL-600-2C10, CL-600-2D15, and CL-600-2D24 airplanes 670BA-24-026 Original October 23, 2009. (i) If the ADG serial number determined in paragraph (g) or (h) of this AD is identified in paragraph 1.A. of the applicable service bulletin listed in Table 1 of this AD, within the applicable time in paragraph (g) or (h) of this AD do an inspection to determine if the symbol “24-5” is marked on the ADG identification plate. A review of airplane maintenance records is acceptable in lieu of this inspection if the symbol “24-5” mark can be conclusively identified from that review. (1) If the symbol “24-5” is marked on the ADG identification plate, the balance washer screws have already been replaced, and no further action is required by this paragraph. (2) If the symbol “24-5” is not marked on the ADG identification plate, before further flight replace all balance washer screws with new balance washer screws, part number MS24667-14, and mark the ADG identification plate with symbol “24-5,” in accordance with the Accomplishment Instructions of the applicable service bulletin listed in Table 1 of this AD. (j) As of the effective date of this AD, no person may install on any airplane, a replacement or spare ADG, Hamilton Sundstrand part number in the 761339 or 1711405 series, having one of the serial numbers identified in paragraph 1.A. of the applicable service bulletin identified in Table 1 of this AD, unless the ADG is identified with the symbol “24-5” on the identification plate. Actions Accomplished According to Previous Issue of Service Bulletin (k) Inspections accomplished before the effective date of this AD according to Bombardier Service Bulletin 601R-24-127, dated October 23, 2009, are considered acceptable for compliance with the corresponding action specified in this AD. FAA AD Differences Note 1: This AD differs from the MCAI and/or service information as follows: The MCAI specifies to inspect only airplanes having certain serial numbers that are part of the MCAI applicability. Because the affected part could be rotated onto any of the airplanes listed in the applicability, this AD requires the inspection be done on all airplanes. We have coordinated this with the TCCA. 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. (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-2009-48, dated December 14, 2009; and Bombardier Service Bulletins 601R-24-127, Revision A, dated February 25, 2010, and 670BA-24-026, dated October 23, 2009; for related information. Material Incorporated by Reference (n) You must use Bombardier Service Bulletin 601R-24-127, Revision A, dated February 25, 2010; or Bombardier Service Bulletin 670BA-24-026, dated October 23, 2009; as applicable; 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 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 September 15, 2010. Robert D. Breneman, Acting Manager, Transport Airplane Directorate, Aircraft Certification Service. [FR Doc. 2010-23838 Filed 9-24-10; 8:45 am] BILLING CODE 4910-13-P