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

Turkish Airlines Flight 452 was a scheduled domestic passenger flight from Istanbul Atatürk Airport to Antalya Airport, Turkey. On 19 September 1976, the Boeing 727-200 operating the flight struck a slope of a hill at Karatepe in Isparta Province, 60 mi (97 km) north of the destination airport due to a pilot error on approach resulting in the death of all 154 people on board. To date, the crash is the deadliest aviation accident to occur in Turkey.