AD 2011-23-09 Airworthiness Directives; Bombardier, Inc. Airplanes

Models named: CL-600-2C10, CL-600-2D15, CL-600-2D24. Read the applicability below — it usually turns on serial or part numbers too.

This AD applies to all 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; certificated in any category. Note 1: This AD is not applicable to piston axles having part number (P/N) 49203-7 or P/N 49203-9, which were installed in production on Bombardier, Inc. Model CL-600-2C10 airplanes having serial numbers (S/Ns) 10266 and subsequent; and Models CL-600-2D15 and CL-600-2D24 airplanes having S/Ns 15155 and subsequent.

You are responsible for having the actions required by this AD performed within the compliance times specified, unless the actions have already been done. Inspection and Repair (g) At the applicable time in paragraph (h)(1), (h)(2), (h)(3) or (i) of this AD, inspect to determine whether the airplane has a main landing gear piston axle having P/N 49203-3 or 49203-5. A review of airplane maintenance records is acceptable in lieu of this inspection if the part number of the main landing gear piston axle can be conclusively determined from that review. Note 2: Operators should be aware that the Goodrich authorized release certificate (Form One) provided for MLG piston axles following overhaul, refers to only the higher assembly P/N 49263-1 or 49263-3; therefore, it is possible that MLG piston axles having P/N 49203-3 or 49203-5 that are installed on the airplane could be identified as having P/N 49263-1 or 49263-3. (h) Except as required by paragraph (i) of this AD, if, during the inspection required by paragraph (g) of this AD, the landing gear piston axle is determined to have P/N 49203-3 or 49203-5: At the applicable time specified in paragraph (h)(1), (h)(2), or (h)(3) of this AD, do a detailed inspection for corrosion and damage of the inboard and outboard piston axles, in accordance with the Accomplishment Instructions of Bombardier Service Bulletin 670BA-32-023, Revision C, dated January 29, 2009. Before further flight, repair any corrosion or damage found, in accordance with the Accomplishment Instructions of Bombardier Service Bulletin 670BA-32-023, Revision C, dated January 29, 2009. Within 30 months after the initial inspection, or within 12 months after the effective date of this AD, whichever occurs later, do the inspection specified in this paragraph; and repeat the inspection thereafter at intervals not to exceed 30 months. (1) For any piston axle that has been in service for 48 months or more as of the effective date of this AD: Inspect within 12 months after the effective date of this AD. (2) For any piston axle that has been in service for 24 months or more, but less than 48 months, as of the effective date of this AD: Inspect within 24 months after the effective date of this AD. (3) For any piston axle that has been in service for less than 24 months as of the effective date of this AD: Inspect within 36 months after the effective date of this AD. (i) For airplanes that have mark “32-45” in the MOD STATUS field of the piston axle nameplate or that have incorporated one of the Bombardier repair engineering orders listed in paragraph 1.D. of Bombardier Service Bulletin 670BA-32-023, Revision C, dated January 29, 2009: At the latest of the applicable times specified in paragraphs (i)(1), (i)(2), and (i)(3) of this AD, do the inspection specified in paragraph (h) of this AD and repeat the inspection thereafter at the time specified in paragraph (h) of this AD: (1) Within 30 months after marking “32-45” in the MOD STATUS field of the piston axle nameplate. (2) Within 30 months after incorporating one of the Bombardier repair engineering orders listed in paragraph 1.D. of Bombardier Service Bulletin 670BA-32-023, Revision C, dated January 29, 2009. (3) Within 12 months after the effective date of this AD. Terminating Action (j) Installing a piston axle having P/N 49203-7 or P/N 49203-9 on any airplane constitutes a terminating action for the requirements of paragraphs (h), (h)(1), (h)(2), and (h)(3) of this AD, for that airplane. Credit for Actions Accomplished in Accordance With Previous Service Information (k) Inspections and repairs accomplished before the effective date of this AD according to any service bulletin specified in table 1 of this AD, are considered acceptable for compliance with the corresponding inspections and repairs specified in paragraph (h) of this AD. Table 1—Credit for Accomplishment of Previous Service Information Document Revision Date Bombardier Service Bulletin 670BA-32-023 Original October 24, 2007. Bombardier Service Bulletin 670BA-32-023 A January 7, 2008. Bombardier Service Bulletin 670BA-32-023 B March 5, 2008. FAA AD Differences Note 3: 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. 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. In accordance with 14 CFR 39.19, send your request to your principal inspector or local Flight Standards District Office, as appropriate. If sending information directly to the ACO, send it 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. (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. Related Information (m) Refer to MCAI Canadian Airworthiness Directive CF-2010-15, dated May 13, 2010; and Bombardier Service Bulletin 670BA-32-023, Revision C, dated January 29, 2009; for related information. Material Incorporated by Reference (n) You must use Bombardier Service Bulletin 670BA-32-023, Revision C, dated January 29, 2009, including Appendix A, Revision B, dated March 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 Côte-Vertu Road West, Dorval, Québec 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/code_of_federal_regulations/ibr_locations.html. Issued in Renton, Washington, on October 21, 2011. Kalene C. Yanamura, Acting Manager, Transport Airplane Directorate, Aircraft Certification Service. [FR Doc. 2011-28360 Filed 11-3-11; 8:45 am] BILLING CODE 4910-13-P