Airworthiness Directives; Empresa Brasileira de Aeronautica S.A. (EMBRAER) Model EMB-135ER and -135KE Airplanes; and Model EMB-145, -145ER, -145MR, -145MP, and -145EP Airplanes

The FAA is adopting a new airworthiness directive (AD) for all EMBRAER Model EMB-135ER and -135KE airplanes and Model EMB-145, -145ER, -145MR, -145MP, and -145EP airplanes. This AD requires inspecting the fuel quantity indication system (FQIS) wire harness and the direct current (DC) fuel pump wire harness to determine if the harnesses are properly attached at their respective attachment points and properly separated from one another, and performing corrective actions if necessary. This AD results from a report that the FQIS wire harness may not be properly attached at its attachment points or properly separated from the DC fuel pump wire harness. We are issuing this AD to prevent chafing between those harnesses or chafing of the harnesses against adjacent airplane structure or components, which could present a potential ignition source that could result in a fire or explosion.