On 10 March 2017, a Sikorsky S-76C++ helicopter on a private charter flight crashed in Istanbul, Turkey, killing all 7 people on board.

[1][2] The helicopter, operated by Swan Aviation for the private use of Eczacıbaşı Holding, was scheduled to fly from Istanbul to the Bozüyük office of the company, located in northwestern Turkey.

The helicopter was carrying two pilots, one Turkish businessman of Eczacibasi group and four Russian guests of the company for a meeting at Bozuyuk facilities scheduled at noon.

Six minutes after the takeoff, it hit the Endem TV Tower and crashed onto the nearby State Road D100 highway.

[3] Directorate General of Civil Aviation informed the press that investigation is still ongoing, but poor visibility conditions and the heavy fog was probably the main cause of the accident.