Turkish Airlines Flight 452 hits the Taurus Mountains, outskirt of Karatepe, Turkey, killing all 154 passengers and crew.

Turkish Airlines Flight 452 was a scheduled domestic passenger flight operated by a Boeing 727-2F2 of Turkish Airlines that crashed near Isparta on 19 September 1976 while en route from Istanbul Atatürk Airport (IST/LTBA) to Antalya Airport (AYT/LTAI), killing all 154 occupants on board. The crash is the deadliest aviation accident in Turkey's history.