The Flying Doctors (1986) : 5x16

An old man is found in the forrest, he claims to be searching for someone. He is dehydrated and goes to hospital, but runs away. It turned out he had crashed a plane outside the Crossing during the war, and his mates had died in the crash, he wanted to see the plane and the grave. He felt guilty for his friends dying, so I wanted to kill himself out there but was rescued by his son, Geoff and Emma.