Investigation Summary
The flight was cruising at 8,800 meters (28,871 feet) when it encountered catastrophic distress. A few minutes after a routine position report 50 kilometers from Krasnoyarsk, the co-pilot made an incoherent emergency transmission featuring an agitated voice and unusual background noise. The wreckage was discovered 28 kilometers east of Krasnoyarsk Airport. Investigators found an entry hole on the port side of the fuselage with internal fire damage, a signature of a missile strike rather than an internal malfunction. The missile, identified as an S-75 Dvina (NATO reporting name SA-2 Guideline), was reportedly fired from the Magansk area during an air defense exercise; it lost its original target after entering a storm front and subsequently locked onto the civilian Tu-104.
Final Conclusions
Although the Soviet authorities initially suppressed the truth by blaming pilot error (spatial disorientation), it was later established that the aircraft was destroyed by a surface-to-air missile. The missile, diverted by weather conditions during a live-fire exercise, struck the aircraft's fuselage, leading to a total loss of control and a high-velocity impact in the Siberian taiga.
Video Analysis
No video analysis linked for this case file yet.
Airframe & Maintenance
Systems & Failure Modes
Fuselage
Suffered a breach from an external projectile, leading to immediate loss of structural integrity or control.
S-75 Dvina (SA-2 Guideline)
The surface-to-air missile system that accidentally tracked and struck the civilian aircraft after losing its intended target drone.
Interesting Facts
- 01The aircraft was a Tupolev Tu-104A, the only operational jet airliner in the world between 1956 and 1958.
- 02Among the 76 passengers were 14 children.
- 03The wreckage was found in flat terrain with small forested areas (taiga) 28 km east of Krasnoyarsk.
- 04Physical evidence included an entry hole on the port side of the fuselage with internal scorching.
- 05The missile was fired during a military exercise in the Magansk area.
Safety Actions & Advisories
Exercise Coordination
The accident highlighted the extreme danger of conducting live-fire air defense exercises in corridors used by civilian aviation without sufficient exclusion zones or radar verification.
Known Controversies & Unanswered Questions
Official Cause vs. Physical Evidence
Reference ↗The Soviet government officially attributed the crash to a stall and spatial disorientation in clouds, but this was widely disputed by investigators who found missile fragments and entry holes in the wreckage.