Airworthiness Directives; Empresa Brasileira de Aeronautica S.A. (EMBRAER) Model EMB-135 and -145 Series Airplanes

This amendment adopts a new airworthiness directive (AD), applicable to certain EMBRAER Model EMB-135 and -145 series airplanes. This AD requires modification of the mid, aft, and forward upper liners in the baggage compartment. The modification involves replacing the plastic lens protection grids on all upper liners with new, light metal lens protection grids. This AD is necessary to prevent the plastic lens protection grids from breaking away and exposing the lens as a source of fire, which could lead to fire damage to the aircraft systems and structure, and expose the passengers and crew to hazardous quantities of smoke. This action is intended to address the identified unsafe condition.