What was found
DURING TAXI, SMOKE APPEARED IN THE CABIN AND CREW REPORTED AN OIL SMELL. APU WAS OFF DURING TAXI. TROUBLESHOT SMOKE IN CABIN/COCKPIT. PERFORMED OPERATIONAL TEST OF THE AIR CONDITIONING SYSTEM AUTO/MANUAL MODE REF AMP BD700-A-J21-52-00-01AAA-320A-A, ADJUSTED THE TEMPERATURE TO MAX COLD AND MAX HOT, NO SMOKE NOTED, NO FAULTS NOTED. OBSERVED ALL READINGS WHILE PERFORMING TEMPERATURE ADJUSTMENT, NO SMOKE NOTED AND ALL READINGS NORMAL. SELECTED ONE PACK AT A TIME, NO SMOKE NOTED, ALL READINGS NORMAL. INSPECTED THE AFT EQUIPMENT BAY AT THE PACKS AND AIR CYCLE MACHINES FOR ANY EVIDENCE OF FLUIDS REF AMP BD700-A-J05-20-00-02AAA-311B-A, NO FLUIDS NOTED. INSPECTED LT & RT ENGINE PRECOOLERS, NO EVIDENCE OF FLUIDS OR FOD NOTED.