What was found
AFTER GEAR RETRACTION, GEAR UNSAFE LIGHT REMAINED ILLUMINATED, LANDING GEAR AND DOOR LATCHING INDICATOR INDICATED RIGHT MAIN GEAR DOOR UNLATCHED. AFTER CYCLING GEAR SEVERAL TIMES, GEAR UNSAFE LIGHT EXTINGUISHED AND NOT LATCHED LIGHT EXTINGUISHED. ADJUSTED RIGHT MAIN GEAR DOOR PROXIMITY SWITCH DOOR UPLATCH POSITION INTERLOCK CABLE I/A/W DC-8 M.A.B. 32-6. GROUND OPS CHECKED GOOD.