Japan Airlines Flight 123 was a Japan Airlines domestic flight from Tokyo International Airport to Osaka International Airport. The Boeing 747-SR46 that made this route, registered JA8119, crashed into the ridge of Mount Takamagahara in Gunma Prefecture, 100 km from Tokyo, on Monday August 12, 1985. The crash site was on Osutaka-no-O'ne (Osutaka Ridge), near Mount Osutaka.
All 15 crew members and 505 out of 509 passengers died: a total of 520 deaths. It remains the deadliest single-aircraft disaster in history, and the second-worst aviation accident of all time, after the Tenerife disaster (not counting ground victims). The four female survivors were seated towards the rear of the plane: Yumi Ochiai, an off-duty JAL flight attendant, age 25, who was jammed between a number of seats; Hiroko Yoshizaki, a 34-year-old woman and her 8-year-old daughter Mikiko Yoshizaki, who were trapped in an intact section of the fuselage; and a 12-year-old girl, Keiko Kawakami, who was found wedged between branches in a tree. Among the dead was the famous singer Kyu Sakamoto.