What was found
MEX - FLT 1156 - AFTER TAKEOFF, FLIGHT ATTENDANT REPORTED BURNING ODOR IN AFT CABIN. INSPECTED AIRCRAFT PACKS, COFFEEMAKERS, OVENS, CABIN ILLUMINATION SYSTEM, AND RAN ENGINES. COULD NOT DUPLICATE ODOR. ACCOMPLISHED PACK BURNOUT AND REPLACED COALESCER BAGS AS A PRECAUTION. SYSTEM GROUND CHECK NORMAL OPERATION. (M)