2006-18-04: Stabilizer trim runaway

2006-18-04 Bombardier, Inc. (Formerly Canadair): Amendment 39-14742. Docket No. FAA-2006-25724; Directorate Identifier 2006-NM-197-AD. Effective Date (a) This AD becomes effective September 1, 2006. Affected ADs (b) None. Applicability (c) This AD applies to Bombardier Model CL-600-2B16 (CL-604) airplanes, serial numbers 5301 and subsequent; and Model CL-600-2B19 (Regional Jet Series 100 & 440) airplanes, serial numbers 7003 through 7990 inclusive and 8000 and subsequent; certificated in any category. Note 1: The Model CL-600-2B19 (Regional Jet Series 100 & 440) airplanes may be referred to by their marketing designations as RJ100, RJ200, CRJ100, CRJ200, and CL-65. Unsafe Condition (d) This AD results from reports of uncommanded horizontal stabilizer trim motion. We are issuing this AD to ensure that the flightcrew is advised of appropriate procedures to follow in the event of stabilizer trim runaway. Failure to follow these procedurescould result in excessive uncommanded movement of the horizontal stabilizer trim actuator (HSTA) and loss of ability to use trim switches to override uncommanded movement or yoke disconnect switches to disconnect the HSTA, which could result in reduction of or loss of pitch trim control and consequent reduced controllability of the airplane. Compliance (e) You are responsible for having the actions required by this AD performed within the compliance times specified, unless the actions have already been done. Airplane Flight Manual (AFM) Revision (f) Within 7 days after the effective date of this AD, make the applicable AFM revisions specified in paragraph (f)(1) or (f)(2) of this AD by incorporating the applicable Canadair (Bombardier) temporary revisions (TRs) identified in Table 1 of this AD into the applicable AFM. (1) For Model CL-600-2B16 (CL-604) airplanes: Revise the Emergency Procedures section of the AFM to advise the flightcrew of additional procedures to follow in the event of stabilizer trim runaway. (2) For Model CL-600-2B19 (Regional Jet Series 100 & 440) airplanes: Revise the Emergency and Abnormal Procedures sections of the AFM to advise the flightcrew of additional procedures to follow in the event of stabilizer trim runaway and in the event of MACH TRIM, STAB TRIM, and horizontal stabilizer trim malfunctions. Table 1 TRs For Bombardier Model - Use - Dated - To the - CL-600-2B16 (CL-604) airplanes Canadair Challenger TR 604/21 August 1, 2006 Canadair Challenger CL-604 AFM, PSP 604-1 CL-600-2B19 (Regional Jet Series 100 & 440) airplanes Canadair Regional Jet TR RJ/152-4 August 9, 2006 Canadair Regional Jet AFM, CSP A-012 (g) When the applicable TR has been included in the general revisions of the applicable AFM, those general revisions may be inserted into the AFM and the applicable TR may be removed, provided the relevant information in the general revisions is identical to that inthe TR. Alternative Methods of Compliance (AMOCs) (h)(1) 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. (2) Before using any AMOC approved in accordance with Sec. 39.19 on any airplane to which the AMOC applies, notify the appropriate principal inspector in the FAA Flight Standards Certificate Holding District Office. Related Information (i) Canadian airworthiness directives CF-2006-20, dated August 22, 2006, and CF-2006-21, dated August 23, 2006, also address the subject of this AD. Material Incorporated by Reference (j) You must use the applicable service information specified in Table 2 of this AD to perform the actions that are required by this AD, unless the AD specifies otherwise. The Director of the Federal Register approved the incorporation by reference of these documents in accordance with 5 U.S.C. 552(a) and 1 CFR part 51. Contact Bombardier, Inc., Canadair, Aerospace Group, P.O. Box 6087, Station Centre-ville, Montreal, Quebec H3C 3G9, Canada, for a copy of this service information. You may review copies at the Docket Management Facility, U.S. Department of Transportation, 400 Seventh Street SW., Room PL-401, Nassif Building, Washington, DC; on the Internet at http://dms.dot.gov; or at the National Archives and Records Administration (NARA). For information on the availability of this material at the NARA, call (202) 741-6030, or go to http://www.archives.gov/federal_register/code_of_federal_regulations/ibr_locations.html . Table 2 Temporary Revisions Incorporated by Reference Temporary Revision Dated - To the - Canadair Challenger Temporary Revision 604/21 August 1, 2006 Canadair Challenger CL-604 Airplane Flight Manual, PSP 604-1 Canadair Regional Jet Temporary Revision RJ/152-4 August 9, 2006 Canadair Regional Jet Airplane Flight Manual, CSP A-012