What was found
STL - FLT 99 - DURING APPROACH, SMOKE EMITTED INTO AFT CABIN AND COCKPIT. FOUND LEFT AND RIGHT COALESCER ELEMENTS, MFG PN 179460-8-1, CONTAMINATED. REPLACED LEFT AND RIGHT COALESCER ELEMENTS AND AIR CONDITIONING SYSTEM OPERATION CHECKED NORMAL. CHECK C-2D - 10-17-95 - MCI.