What was found
ON DEPARTURE, DURING THE LAST SEGMENT, A PUNGENT ODOR WAS DETECTED FOLLOWED BY VISUAL SMOKE ROLLING AND EMITTING OUT OF OVERHEAD PANEL BETWEEN LANDING LIGHT SWITCHES AND NR 1 HF RADIO. HF WAS OFF, THE LIGHTS WERE SELECTED OFF, SMOKE DISSIPATED AT THAT POINT BUT ELECTRIC SMOKE ODOR AND VERY HOT PANEL REMAINED. ACCOMPLISHED INSPECTION AS PER AMM 05-51-50 FOUND RT OUTBOARD LANDING LIGHT SWITCH AT FAULT (INTERNAL FAILURE). REPLACED RT OUTBOARD LANDING LIGHT SWITCH AS PER AMM 33-42-02 AND 33-11-04.