What was found
WHEN NR 2 ENG EXPERIENCED SMOKE COMING FROM AFT CABIN AREA. CREW SHUT DOWN RT ENG & APU, AS WELL AS EVACUATING PASSENGERS & TURNING OFF ALL ELECTRICAL POWER. IT WAS DETERMINED TO BE COMING FROM AFT BAGGAGE AREA RT BULKHEAD AREA & BLOWN GROUND FAN REIRC. CB INDICATED POSSIBLE VENTURI FAN MOTOR FAILURE. INSPECTION OF VENTURI FAN INDEED REVEALED HIGH HEAT AREA. FAILED COMPONENT WAS ELECTRICALLY ISOLATED & ACFT WAS FLOWN TO HOME BASE IAW APPROVED MEL. AD 94-11-03 ADDRESSED THIS VERY PROBLEM, IT HAD BEEN ACCOMPLISHED ON THIS ACFT BY COMPLIANCE WITH ALERT S/B 21-A150, VISUAL INSPECTION OF ADJACENT AREA FOR A MINIMUM 1" CLEARANCE OF VENTURE MOTOR & ANY INSULATING MATERIAL, TO PREVENT INGESTED INTO THE MOTOR.