[maigret]

I had the opportunity to discuss that with a pilot who uses to land in Russia in different airports and explained us NDB landings in Russia. The pilot made only one landing attempt that failed, the other ones are the standard procedure in Russia where ATC take you down step by step in the traffic pattern - make you flight 3 or 4 circuits round over the runway. Also the captain didn't have much hours of flights compared to his years of experience - a common pattern in the east countries who don't have much money for military aircrafts expenses. It looks like a flying error at the end, he maybe have turned over the trees (probably because the NDB wasn't on the runway centerline), and was too low too early... Investigation will tell more hopefully.