Aeroflot Flight 6515 was a Soviet domestic flight operated by Aeroflot, traveling from the city of Lviv to the regional airport near the Syvash area. On that fateful day, while approaching for landing amidst deteriorating weather conditions, the aircraft encountered substantial difficulties due to thick fog and turbulent winds. The crew faced challenges in adhering to standard operating procedures in such low visibility, which ultimately led to the aircraft crashing into the icy waters of the Syvash lagoon. Tragically, all 26 individuals aboard, including both passengers and crew members, perished in the incident.

Following the crash, an extensive investigation was initiated to determine the root causes of the accident. Reports suggested that human error was a significant factor, compounded by the lack of effective communication between the crew and air traffic control. As a result of this tragedy, Aeroflot and the Soviet aviation authority undertook measures to enhance training protocols for pilots, focusing on decision-making under adverse conditions.

This crash also highlighted the need for improved safety regulations within the Soviet aviation system, which was increasingly under scrutiny due to other similar incidents. The event prompted further investigation into the operating conditions of Aeroflot and the overall safety culture in the aviation sector during a period of intense change in the Soviet Union.