I have no background or experience in this subject, but am just wondering if this is coincidence or is there a bigger issue? Story is at:

http://www.flightglobal.com/articles...shes-in-a.html

Ukrainian government reaction is at:

http://www.nrcu.gov.ua/index.php?id=148&listid=65502

I like the communications and transport minister's explanation of causes. He really narrows it down...

Today, in Ukraine, is an official day of mourning for the victims of the crashes and their families.

http://www.nrcu.gov.ua/index.php?id=148&listid=65500