Originally Posted by
Flying Binghi
There may have been a different type of belt fitted. I note the exorst appears to me to have been modified for the air display smoke so other airframe mods may have been done.
.
Based on multiple videos from the cockpit and livejournal posts of plane owner and his friends about training and show flights at
Orlovka and
Severka (where this plane was based) - unfortunately mostly these is now deleted from internet - there was no mods done except exhaust pipe and mount for GPS in the cockpit. They don't bother neither with repaint nor with proper documents and airworthiness renewal/prolongation (as you can see from docs posted, it was ended two years ago both for airframe and engine).