What was found
AT ALTITUDE, STRONG VIBRATION AND AUDIBLE RUMBLING UNDER FLIGHT DECK FOWARD GALLEY FLOOR, ACCOMPANIED BY FAINT BURNED ODOR. LATER, ECAM VENT BLOWER FAULT THEN VENT EXTRACT FAULT BLOWER AND EXTRACT PLACED IN OVERRIDE IAW ECAM VIBRATION/NOISE/ODOR STOPPED BEFORE ECAM CHIME. FOUND BLOWER FAN SEIZED. R & R BLOWER FAN IAW AMM 21-26-51, PB401. OPS CHECK GOOD ACFT OK FOR SERVICE.