In June of 1980, Aerolinee Itavia Flight 870 was a McDonnell Douglas DC-9-15 that left Guglielmo Marconi airport in Bologna, Italy traveling to Palermo, Sicily, and was in its final descent before crashing into the Tyrhennian Sea near the island of Ustica. All 77 passengers and 4 crew lost their lives in the crash, the cause of which is still debated to this day.