What was found
FLT 972 - AFTER PUSHBACK AIRCRAFT RETURN TO GATE DUE TO OVEN SMOKING IN THE AFT GALLEY. MAINTENANCE INSPECTED OVEN AND PLACARDED AFT GALLEY AFT FACING OVEN INOPERATIVE AND CIRCUIT BREAKER PULLED. RELEASED AIRCRAFT FOR SERVICE AND REDISPATCHED. GUAM MAINTENANCE FOUND OVEN LEFT CAVITY FAN SEIZED UP. REMOVED AND REPLACED OVEN PER MM 25-31-07. OPS CHECKED NORMAL. RELEASED AIRCRAFT FOR SERVICE. (M)