Skin for Su-27SM. "06-Red" (RF-92210) from Lipetsk AB.
The skin is based off this plane.
For those new with the game, the .dds and .skin files go into "...Desura\Common\vector-thrust\Objects\Airplane\Su-27SM" folder. Add "Su-27SM.ini" file only if you want this skin to become available in campaign.