300 posts later I think this is what we MAY know....
If the plane was on an approach, probably crashed doing a circle to land
If the plane wasn't on an approach, probably crashed trying to find the runway...
Either way it smells of CFIT during the approach phase and might be one of those deals where they go just a little lower and lower trying to find the runway.
Hard to believe that aircraft didn't have a radar alt/EGWS....but all that could be ignored and or warnings turned off.
I also wonder about altimeter settings, if there is a diff between Poland and Russia....
The last but not to be disregarded possibility is sabotage...given why they plane was to be there, to basicaly get an apology from Stalinist era communists..