They came too fast Shocked altimetre was dead for sure and they had no visibility.
A large plane like this is full of fuel when it takes off and normally takes off with way too much weight to safely land.
Normally it is not a problem because the plane is flying somewhere and by the time it gets there it has burned off 20+ tons of fuel so it is much lighter when it tries to land.
This aircraft tried to land without a big flight to burn off some fuel, so it was seriously over weight... which means it takes a lot more room to slow down and all the bumps on the runway incur more stress on the structure which is not designed to land at those sorts of weights.