As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
GRR/MKE - FLT 1125 - DURING FLIGHT, SMOKE STARTED TO COME OUT FROM BEHIND THE RT COCKPIT CB PANEL. THE CREW STARTED PULLING CIRCUIT BREAKERS UNTIL THEY FOUND THE ONE THAT MADE THE SMOKE STOP. ONCE THE SMOKE WAS STOPPED, THE CREW REQUESTED PRIORITY LANDING CLEARANCE. AFTER A SAFE LANDING IN MKE, MAINTENANCE REPLACED THE AURAL WARNING CIRCUIT BREAKER AND CLEANED THE GLYCOL OUT FROM BEHIND THE CIRCUIT BREAKER PANEL. (X)