What was found
LEFT GEAR DOWN GREEN LIGHT FLICKERING WITH GEAR HANDLE IN THE UP POSITION. ALSO GEAR DISAGREE EICAS STATUS MSG AND AMBER GEAR LIGHT ILLUMINATED. GEAR DOORS LIGHT ALSO ILLUM. AS SOON AS GEAR SELECTED DOWN LEFT GEAR DOWN GREEN LIGHT ILLUMINATED IMMEDIATELY, GEAR NOISE CONFIRMED THAT LEFT GEAR STUCK IN DOWN POSITON. DUMPED FUEL. RTF, NORMAL LANDING. *S/D* LEFT GEAR SIDE BRACE LOCK ACTUATOR HAS INTERNAL BYPASSING. GEAR COULD NOT UNLOCK FOR RETRACTION. REPLACED ACTUATOR.