1995 Borodianka mid-air collision

On 10 February 1995, at 16:09 CET, the first Antonov An-70 prototype aircraft collided with an Antonov An-72 that was assisting with the An-70 test program over Borodianka Raion in Ukraine. All seven crew members on board the An-70 were killed; the An-72 was able to make a safe emergency landing at Hostomel Airport in Kyiv with no fatalities.

Source: Wikipedia — 1995 Borodianka mid-air collision (CC BY-SA 4.0)