2000-22-12: Circuit Breakers

2000-22-12 EMPRESA BRASILEIRA DE AERONAUTICA S.A. (EMBRAER): Amendment 39-11958. Docket 2000-NM-121-AD. Applicability: Model EMB-120 series airplanes, serial numbers 120003, 120004, 120006 through 120308 inclusive, 120310, 120312 through 120314 inclusive, 120316 through 120323 inclusive, and 120325 through 120330 inclusive; certificated in any category. NOTE 1: This AD applies to each airplane identified in the preceding applicability provision, regardless of whether it has been modified, altered, or repaired in the area subject to the requirements of this AD. For airplanes that have been modified, altered, or repaired so that the performance of the requirements of this AD is affected, the owner/operator must request approval for an alternative method of compliance in accordance with paragraph (b) of this AD. The request should include an assessment of the effect of the modification, alteration, or repair on the unsafe condition addressed by this AD; and, if the unsafecondition has not been eliminated, the request should include specific proposed actions to address it. Compliance: Required as indicated, unless accomplished previously. To prevent overheating of the wire between certain circuit breakers, which could result in smoke emissions in the cockpit, accomplish the following: Wire Replacement (a) At the next scheduled maintenance inspection ("A"-check), but no later than 400 flight hours after the effective date of this AD: Replace the existing wire between circuit breakers 0304 and 0358 with a wire coded W200-1063-12, in accordance with EMBRAER Service Bulletin 120-30-0028, dated August 25, 1997. Alternative Methods of Compliance (b) An alternative method of compliance or adjustment of the compliance time that provides an acceptable level of safety may be used if approved by the Manager, Atlanta Aircraft Certification Office (ACO), FAA. Operators shall submit their requests through an appropriate FAA Principal Maintenance Inspector, who may add comments and then send it to the Manager, Atlanta ACO. NOTE 2: Information concerning the existence of approved alternative methods of compliance with this AD, if any, may be obtained from the Manager, Atlanta ACO. Special Flight Permits (c) Special flight permits may be issued in accordance with sections 21.197 and 21.199 of the Federal Aviation Regulations (14 CFR 21.197 and 21.199) to operate the airplane to a location where the requirements of this AD can be accomplished. Incorporation by Reference (d) The replacement shall be done in accordance with EMBRAER Service Bulletin 120-30-0028, dated August 25, 1997. This incorporation by reference was approved by the Director of the Federal Register in accordance with 5 U.S.C. 552(a) and 1 CFR part 51. Copies may be obtained from Empresa Brasileira de Aeronautica S.A. (EMBRAER), P.O. Box 343 - CEP 12.225, Sao Jose dos Campos - SP, Brazil. Copies may be inspected at the FAA, Transport Airplane Directorate, 1601 Lind Avenue, SW., Renton, Washington; or at the FAA, Atlanta Aircraft Certification Office, One Crown Center, 1895 Phoenix Boulevard, suite 450, Atlanta, Georgia; or at the Office of the Federal Register, 800 North Capitol Street, NW., suite 700, Washington, DC. NOTE 3: The subject of this AD is addressed in Brazilian airworthiness directive 97-11-01, dated November 25, 1997. Effective Date (e) This amendment becomes effective on December 12, 2000.