What was found
10 MIN INTO FLT AT NIGHT, 12000 MSL, IN AND OUT OF CLOUDS AND RAIN, AREA ABOVE RT- SIDE FLT CONTROL PANEL SPARKED W/POPPING NOISE AND BRIEF BURNED SMELL ACCOMPAINIED BY BOTH MASTER WARNING LTS FLASHING. RAN A/C APU AND ENGINES TO VERIFY DISCREPANCY, COULD NOT DUPLICATE SPARKING SMELL OR WIRING ACTUATION. PERFORMED GENERAL INSPECTION OF COCKPIT FLIGHT CONTROL PANELS AND PILOT AND CO-PILOT WINDSHIELDS. FOUND 4 STATIC DISCHARGE DRAINS NOT SECURED. REPAIRED STATIC DRAIN WEDGES IAW SRM CHAPTER 56-10-11.