As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CAPTAINS PRIMARY ATTITUDE INDICATOR WENT OUT THEN SAW SMOKE COME OUT OF INSTRUMENT PANEL. PERFORMED AN EMER DESCENT, INFORMED ATC FLIGHT CREW & PAXS. SMOKE DISSIPATED BUT STRONG ELEC SMELL WAS STILL PRESENT IN COCKPIT, BLACK DRIPS WERE SEEN COMING OUT OF OVERHEAD PANEL OVER SEAT 9F. R & R CAPTAINS PFD. OPERATIONS GOOD IAW AMM 34-22-06. BLACK DRIPS WERE DIRT & CONDENSATION, ALSO SEE LP 597684 & WORK ORDER 00260208 FOR ADDITIONAL ACTION TAKEN.