Just a thought and I maybe well off the mark here...
...I recall a news item a few months back about the weapons inspectors in Iraq. Apparently there was a delay in getting them helicopters as the UN had to give the contract to the lowest bidder (surely there would be some other stipulation).
Now it certainly seems a bit weird to me that Spanish peacekeepers were flying on a Ukrainian Yak-42 on a flight from Afghanistan to Spain that required 2 refueling stops...am I right about that?
And quite why the pilot chose a third attempt (one report (BBC) states pilot saying just before crash that he couldn't see the runway).
If I was next of kin I'd want some very swift and accurate answers.