or we've heard from deputy prime minister sergei ivanov saying that he believes the more he's seen the data he's been given that this crash was caused through a combination of pilot error whether there was very thick fog on the evening in question and that may have played a role in this in causing this crash now experts who have studied these type of incidents before have corroborated what this they have an office says also telling comparisons between this crash and the fatal crash which killed polish president lech kaczynski last year so they have saying that what the preliminary data what they've seen it looks like a combination of pilot error and bad weather caused this place across. new crocodilian most of which i don't think anything would go wrong with the plane itself in forty years of operation the triple zero one three four has to do extremely reliable aircraft in previous catastrophes human error was always to blame and the same is true here the pilot should have made a second landing approach this is exactly what happened to the polish presidential airplane what. we know of