What happened
While performing its final approach to the runway at Techamutete Airport, the aircraft was struck by a SAM-7 surface-to-air missile. The impact triggered a massive explosion, causing the plane to crash several hundred meters before reaching the landing strip. The wreckage of the aircraft was completely destroyed upon impact.
There were 29 fatalities in the accident, as there were no survivors among the occupants. Among those killed was a high-ranking Cuban government official serving as the deputy minister for Armament.
Findings
Investigations concluded that the destruction of the aircraft was the result of friendly fire. Specifically, Cuban military personnel stationed in the vicinity of Techamutete Airport mistakenly identified the plane as an enemy aircraft and engaged it with a missile.