The News Reports provides data on the Estimated number of aircraft shot down or destroyed in accidents between 2011 to 2018. It includes unmanned aerial vehicles. it is estimated that over 100 Syrian airforce aircraft have also been destroyed.
Russia has lost an estimated 17 aircraft in total, both in combat and due to accidents. The U.S. incidents on the infographic take into account two UAV crashes, the fatal crash of an F-16 after a technical issue and the crash of a V-22 Osprey.
This infographic shows, how chaotic and dangerous Syria's skies have become by providing an overview of estimated aircraft losses. The number of aircraft destroyed in numbers is:
111 - Syria
17 - Russia
4 - Israel
4 - United States
3 - Iran
3 - Turkey
1 - Jordan
Image source: https://www.statista.com/chart/15492/estimated-number-of-aircraft-shot-down-or-destroyed-in-accidents-in-syria/
Image license: CC-BY-ND