As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
STARTED APU. TURNED BLEED ON AND COCKPIT FILLED WITH A BLUE - GRAY SMOKE, WE COULD NOT SMELL OIL OR ELECTRICAL ODOR. SHUT EVERYTHING DOWN. [SUP 05-03-07] APU OIL LEVEL WAS FOUND OVER SERVICED. CORRECTED SERVICING IAW HONEYWELL MM 49-90-00. REMOVED AND REPLACED CONDENSOR SOCK IAW 680 MM 12-19-00. ALL OPS CHECKS AND LEAK CHECKS GOOD.