2005-23-13: Nose landing gear (NLG) wheel

2005-23-13 Empresa Brasileira de Aeronautica S.A. (EMBRAER): Amendment 39-14371. Docket No. FAA-2005-22147; Directorate Identifier 2005-NM-114-AD. Effective Date (a) This AD becomes effective December 19, 2005. Affected ADs (b) None. Applicability (c) This AD applies to EMBRAER Model EMB-135BJ airplanes, identified in EMBRAER Service Bulletin 145LEG-32-0020, Revision 01, June 21, 2005; and Model EMB-135ER, -135KE, -135KL, and -135LR airplanes, and Model EMB-145, -145ER, -145MR, -145LR, -145XR, - 145MP, and -145EP airplanes, identified in EMBRAER Service Bulletin 145-32-0104, Revision 03, dated June 21, 2005; certificated in any category. Unsafe Condition (d) This AD results from reports of the loss of directional control of the airplane on the ground after an internal failure of the steering system of the nose landing gear (NLG) wheel. We are issuing this AD to prevent failure of the NLG wheel steering system, which could result in 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. Modification (f) Within 6,000 flight hours or 36 months after the effective date of this AD, whichever occurs first, modify the logic of the NLG wheel steering system in accordance with the Accomplishment Instructions of EMBRAER Service Bulletin 145LEG-32-0020, Revision 01, June 21, 2005 (for Model EMB-135BJ airplanes); or EMBRAER Service Bulletin 145-32-0104, Revision 03, dated June 21, 2005 (for Model EMB-135ER, -135KE, -135KL, and -135LR airplanes; and Model EMB-145, -145ER, -145MR, -145LR, -145XR, -145MP, and -145EP airplanes); as applicable. Actions Accomplished in Accordance With Previous Issues of Service Bulletins (g) Actions accomplished before the effective date of this AD in accordance with the service bulletins listed in Table 1 of this AD are considered acceptable for compliance with the corresponding actions specified in this AD. Table 1.--Previous Issues of Service Bulletins EMBRAER service bulletin Revision level Date 145 32 0104 Original January 18, 2005. 145 32 0104 01 April 4, 2005. 145 32 0104 02 May 19, 2005. 145LEG 32 0020. Original April 1, 2005. Alternative Methods of Compliance (AMOCs) (h)(1) The Manager, International Branch, ANM-116, Transport Airplane Directorate, 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 14 CFR 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) Brazilian airworthiness directive 2005-04-02, dated April 30, 2005, also addresses the subject of this AD. Material Incorporatedby Reference (j) You must use EMBRAER Service Bulletin 145LEG-32-0020, Revision 01, June 21, 2005; or EMBRAER Service Bulletin 145-32-0104, Revision 03, dated June 21, 2005; as applicable, to perform the actions that are required by this AD, unless the AD specifies otherwise. EMBRAER Service Bulletin 145LEG-32-0020, Revision 01, June 21, 2005, contains the following effective pages: Page number Revision level shown on page Date shown on page 1, 2, 15, 19 01 June 21, 2005. 3 14, 16 18, 20, 21 Original April 1, 2005. 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 Empresa Brasileira de Aeronautica S.A. (EMBRAER), P.O. Box 343--CEP 12.225, Sao Jose dos Campos--SP, Brazil, 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 .