They were supposed to get a new aircraft some time back, but it was decided that the TU-154 (Russian plane) was still in good shape with very low air time. There was also not enough $ in the budget, which I think is crazy, because you can save money on lots of things, but something like this should not be avoided at any costs.
Of course it's very easy now to speculate and question everything, after the fact. But the main and obvious remains true, it's a devistating tragedy and loss, making a huge hole in the governing body of Poland.
Let's not forget who was on that plane besides the president and wife. Almost every head of the Polish government. From all the generals of every military sector, to all the head cardinals and priests, to the highest house and senate delegates. It is pretty much not believable to me. Now the whole world will learn about what took place in Katyń 70 years ago. How Stalin's NKVD executed 22,000 Polish officers and citizens. Now the hidden archives should be released and the detailed facts should come out. IMO, Stalin has murdered once again.
I have Polish tv and I've been watching the kondukt or caravan of president's coffin from the airport to the palace all day. They only identified 24 people so far, and Mrs.Kaczyńska is still not identified.