What was found
STL - FLT 223 - DURING CLIMB, HAD SMOKE IN CABIN. SELECTED FULL RATE CABIN PRESSURE AND FULL COLD, AND CABIN CLEARED. FOUND OIL IN 8TH STAGE AIR DUCT OF LEFT ENGINE SN 1215. REPLACED LEFT ENGINE. ENGINE TOTAL TIME: 18,588 HOURS; 9,630 CYCLES. CHECK C-1D - 1-30-95 - MCI.