What was found
HNL - FLT 102 - A/C EN ROUTE TO ITO FROM LIH, WAS DIVERTED BACK TO HNL, INFLIGHT THROUGH 12,000 FEET CARGO DOOR LIGHT ILLUMINATED. LIGHT EXTINGUISHED AS A/C DESCENDED THROUGH 11,000 FEET. A/C MADE AN UNEVENTFUL LANDING IN HNL. CLEANED PROXIMITY SWITCH, VERIFIED THAT THE DOOR WAS OPERATIONAL AND OPS CHECK GOOD. (M)