Beriev A-50

First, a Ukrainian drone damaged an A-50 on the ground in Belarus last year. Subsequently, on January 14, a Ukrainian long-range missile shot down an A-50 over the Sea of Azov in southern Ukraine. Six weeks later, on February 23, in the same area, another Ukrainian missile destroyed the third A-50, writes Forbes.

The Beriev A-50 aircraft, also known as the NATO "Mainstay", is an early warning and control aircraft used by Russia to monitor Ukrainian air defenses.
The plane usually flies with a crew of up to 15 staff and is estimated to cost over $300 million.