What was found
INSPECTION TYPE:N/ADIV - DECENDING THROUGH 20000 FT INTO UIO HEARD A LOUD BANG. LEVELED OFF AT 18000 FT TO COMENCE APPROACH SELECTED FLAPS ONE AND HEARD ANOTHER BANG. DISCONECTED AUTOPILOT SUSPECTING A CARGO SHIFT. DIVERTED GYE AND LANDS A WITH 13 UNITS OF TRIM.INSPECTION ACCOMPLISHED IAW GMM 04-01.01.02 INSPECTED FLOOR AREA AT POS 4 AND 3, EXERCISED ALL CARGO LOCKS AT POS 4AND3 AND THEY ALL WORKED PROPERLY. NO DAMAGE FOUND, AIRCRAFT OK FOR SERVICE.