Turkish Airlines Crashes: 42 Die in Sea of Marmara

The pilot never saw it coming. Battling thick fog and treacherous visibility, Turkish Airlines Flight 345 descended toward Istanbul's Yesilkoy Airport and slammed into the Sea of Marmara on January 26, 1975, killing all 42 people aboard. The Boeing 727 struck the water at high speed, disintegrating on impact and sinking rapidly into the cold waters of the inland sea. Recovery operations were hampered by the depth of the wreckage and winter sea conditions. The aircraft had been operating a domestic flight from Ankara and was on its final approach to Istanbul when it descended below the minimum safe altitude in instrument meteorological conditions. The investigation determined that the crew lost situational awareness during the approach, likely due to a combination of poor weather, inadequate instrument approach aids at the airport, and possible confusion about the aircraft's altitude above the sea surface. The Sea of Marmara provides no terrain features visible through fog that might have alerted the crew to their dangerously low altitude. Turkish aviation safety standards in the 1970s lagged behind Western European norms, and the airport's instrument landing system was not fully operational at the time of the crash. The disaster was one of several fatal accidents involving Turkish Airlines during this period, contributing to the airline's poor safety reputation that would persist for decades. Subsequent modernization of Turkey's civil aviation infrastructure, including the construction of new airports and the installation of precision approach systems, gradually improved the safety record.