What was found
DEPARTING KATL, GEAR NOT LATCHED LIGHT ILLUMINATED. ABNORMAL CHECKLIST COMPLETED AND LIGHT DID NOT EXTINGUISH, AFTER EACH UPLATCH CHECK (IN UPLATCH CHECK POSITION). CORRECTED PLAY AT RIGHT MLG UPLOCK ROLLER FITTING, ALSO LUBRICATED ALL GEARS. LANDING GEAR OPERATIONAL CHECK PERFORMED SEVERAL TIMES, ALL CKD NORMAL MM 12-81-1 AND MM 32-10-0. AIRCRAFT RETURNED TO SERVICE.