Turkish Airlines Flight 158 was a scheduled domestic flight from Istanbul to Ankara. On approach to Ankara Esenboğa Airport, the Boeing 727 encountered adverse weather, including thick fog that severely limited visibility. As the aircraft descended towards the airport, it deviated from its intended flight path, resulting in a tragic accident. The plane struck a hill located just short of the airport, leading to catastrophic damage and the loss of lives.

The crash resulted in the deaths of 47 passengers and crew members, while 20 others were injured. Response teams quickly arrived at the scene to assist in rescue efforts. The investigation that followed highlighted critical factors such as pilot error, the challenging weather conditions at the time, and issues related to the airport's approach procedures. The lack of advanced navigational aids contributed to the difficulties faced by the flight crew during landing.

Following the accident, improvements were made to safety protocols within Turkish civil aviation, including pilot training and aircraft landing systems. The need for better communication between pilots and air traffic control became a focal point of discussions that ensued, aiming to prevent similar incidents in the future. This accident marked a pivotal moment in promoting aviation safety awareness in Turkey and around the world.