What was found
DURING CLIMB, SMOKE IN THE PASSENGER CABIN ON THE PREMIER CLASS AND THE FIRST 20 ROWS WAS VISIBLE ALONG THE CEILING; SO FLIGHT CREW ACCOMPLISHED THE QRH 8.5 PROCEDURE. ACFT RETURNED, MX PERSONNEL PERFORMED SMOKE OR FUMES IN CABIN CONDITIONAL INSPECTION IAW MM 05-51-50 AND FIM 21-00 TASK 808 PROCEDURE, ALL CORRECT. MX PERSONNEL PERFORMED OVERWEIGHT LANDING INSPECTION PHASE 1 IAW MM 05-51-35, PHASE 1 OPTION A, NO DAMAGE WAS FOUND.