Alan Frank Chapman, 36, was last seen on June 9, 1983, when he told his wife he was going hiking in the Kahili mountain area near Koloa, Hawaii and would return by 10:00 am the next morning. He was described as a white male, 6 feet 0 inches to 6 feet 1 inch, about 145–146 pounds, with short brown hair and distinctive tattoos: Jesus Christ on his right forearm and the word mild on his right wrist; a Japanese lady on his left forearm and the word bitter on his left wrist. He was reportedly wearing a brown t-shirt, camouflage military-style pants, and black boots when he left.

Local responders including the fire department, State Land & Natural Resources and the Kauai Police Department conducted an extensive search of the rugged mountain terrain but found no sign of Chapman or his belongings. The Kauai Police Department lists the investigation as open. No concrete evidence has emerged to explain whether an accident, a deliberate disappearance, or another outcome occurred.

If anyone saw Alan Chapman in the Kahili area around June 9, 1983, or has information about his whereabouts, please share what is known.