The crash of a DHC-4 Caribou in Papua New Guinea on this day was probably the most tragic accident in RAAF history. Aircraft A4-233, one of a pair of Caribous detached semipermanently from No 38 Squadron, was returning PNG school cadets from their annual training camp when it went missing on a flight from Lae to Port Moresby. Despite a large-scale air search, it was not until three days later that four schoolboy survivors were located, having attempted to walk out for assistance. They were able to direct rescuers to the crash site at Kudjeru Gap, near Wau, and a fifth schoolboy was winched out of the thick jungle, only to die later. The Caribou's crew of three, plus a ground liaison officer from the Army, and 21 school cadets had all been killed in the disaster.