AD 2005-03-13 Airworthiness Directives; Bombardier Model CL-600-2B19 (Regional Jet Series 100 & 440) Airplanes

This AD applies to Bombardier Model CL-600-2B19 (Regional Jet Series 100 & 440) airplanes, serial numbers 7003 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. Repetitive Inspections (f) Before the accumulation of 2,000 total flight hours, or within 550 flight hours after the effective date of this AD, whichever occurs later, do a detailed inspection for fractures and cracks of the links of the aileron PCU, in accordance with Part A of the Accomplishment Instructions of Bombardier Alert Service Bulletin A601R-27-130, Revision “B,” including Appendices A and B, dated May 11, 2004. Repeat the detailed inspection thereafter at intervals not to exceed 1,000 flight hours. Note 1: For the purposes of this AD, a detailed inspection is “an intensive examination of a specific item, installation, or assembly to detect damage, failure, or irregularity. Available lighting is normally supplemented with a direct source of good lighting at an intensity deemed appropriate. Inspection aids such as mirrors magnifying lenses, etc. may be necessary. Surface cleaning and elaborate procedures may be required.” Corrective Action (g) If any fractured or cracked link is detected during any inspection required by paragraph (f) of this AD, before further flight, replace the fractured/cracked link and do the applicable related investigative and corrective actions by doing all the actions in accordance with Part B of the Accomplishment Instructions of Bombardier Alert Service Bulletin A601R-27-130, Revision “B,” including Appendices A and B, dated May 11, 2004; except as required by paragraph (h) of this AD. (h) If any crack is found on the aileron lugs during any related investigative action required by paragraph (g) of this AD, and the service bulletin recommends contacting Bombardier for disposition: Before further flight, disposition and replace the cracked aileron lug in accordance with a method approved by the Manager, New York Aircraft Certification Office (ACO), FAA, or Transport Canada Civil Aviation (TCCA) (or its delegated agent). Acceptable Revisions of the Referenced Service Bulletin (i) Actions specified in paragraphs (f) and (g) of this AD done before the effective date of this AD in accordance with Bombardier Alert Service Bulletin A601R-27-130, Revision “A,” including Appendices A and B, dated December 22, 2003; are acceptable for compliance with the corresponding requirements of paragraphs (f) and (g) of this AD. (j) Accomplishment of the initial inspection of the links of the aileron PCU, and replacement if necessary, before the effective date of this AD in accordance with Bombardier Alert Service Bulletin A601R-27-130, including Appendices A and B, dated November 13, 2003, is acceptable for compliance with the corresponding requirements of paragraphs (f) and (g) of this AD; except as provided by paragraph (k) of this AD. (k) Airplanes on which a fractured or cracked link of the aileron PCU was found that were not subject to an NDT inspection of the aileron lugs ( i.e. , related investigative action required by paragraph (h) of this AD) before the effective date of this AD must do an NDT inspection of the applicable lugs in accordance with paragraph (g) of this AD at the next repetitive detailed inspection of the link of the aileron PCU required by this AD. Reporting (l) Submit a report of the findings (both positive and negative) of the initial inspection required by paragraph (f) of this AD and any associated fractured or cracked link to Bombardier Aerospace Inc., c/o In-Service Engineering, 3rd floor, Dept. 508, 400 Cote Vertu Road West, Dorval, QC, Canada H4S 1Y9, at the applicable time specified in paragraph (l)(1) or (l)(2) of this AD. The report must be done in accordance with Appendices A and B of Bombardier Alert Service Bulletin A601R-27-130, Revision ‘B,’ dated May 11, 2004. Under the provisions of the Paperwork Reduction Act of 1980 (44 U.S.C. 3501 et seq. ), the Office of Management and Budget (OMB) has approved the information collection requirements contained in this AD and has assigned OMB Control Number 2120-0056. (1) If the inspection was done after the effective date of this AD: Submit the report and any fractured/cracked link within 30 days after the inspection. (2) If the inspection was accomplished prior to the effective date of this AD: Submit the report and any fractured/cracked link within 30 days after the effective date of this AD. No Submission of Comment Sheets (m) Although the service bulletin referenced in this AD specifies to submit comment and compliance sheets to the manufacturer, this AD does not include that requirement. Alternative Methods of Compliance (AMOCs) (n) The Manager, New York Aircraft Certification Office, FAA, has the authority to approve AMOCs for this AD, if requested in accordance with the procedures found in 14 CFR 39.19. Related Information (o) Canadian airworthiness directive CF-2004-13, dated July 20, 2004, also addresses the subject of this AD. Material Incorporated by Reference (p) You must use Bombardier Alert Service Bulletin A601R-27-130, Revision ‘B,’ including Appendices A and B, dated May 11, 2004, to perform the actions that are required by this AD, unless the AD specifies otherwise. The Director of the Federal Register approves the incorporation by reference of this document in accordance with 5 U.S.C. 552(a) and 1 CFR part 51. For copies of the service information, contact Bombardier, Inc., Canadair, Aerospace Group, P.O. Box 6087, Station Centre-ville, Montreal, Quebec H3C 3G9, Canada. For information on the availability of this material at the National Archives and Records Administration (NARA), call (202) 741-6030, or go to http://www.archives.gov/federal_register/code_of_federal_regulations/ibr_locations.html. You may view the AD docket at the Docket Management Facility, U.S. Department of Transportation, 400 Seventh Street SW., room PL-401, Nassif Building, Washington, DC. Issued in Renton, Washington, on January 31, 2005. Kalene C. Yanamura, Acting Manager, Transport Airplane Directorate, Aircraft Certification Service. [FR Doc. 05-2580 Filed 2-15-05; 8:45 am] BILLING CODE 4910-13-P

This AD was prompted by reports indicating that the links of the aileron power control unit (PCU) have failed. We are issuing this AD to prevent failure of both links of the aileron PCU, which could result in reduced lateral control of the airplane.