What was found
THE AIRCRAFT WAS PARKED OUTSIDE IN A HEAVY ALLOWING WATER TO ENTER CONNECTORS AFT OF THE PILOTS CIRCUIT BREAKER PANEL. APPROX. FIFTEEN MINUTES AFTER TAKEOFF, THE LEFT AND RIGHT ESSENTIAL (A) CIRCUIT BREAKERS OPENED. THE RIGHT ESSENTIAL (A) BREAKER WAS RESET, ALLOWING THE CREW TO DECLARE AN EMERGENCY. RIGHT ESS. (A) BREAKER OPENED AGAIN ON FINAL APPROACH, AND ASSOCIATED WIRING WERE INSPECTED BY MFG MAINTENANCE, NO DEFECTS NOTED. ALL SYSTEM CHECKS SATISFACTORY. PILOTS SIDE WINDOW SEAL REPLACED.