You wrote:
What if something was frozen in the system, defrosted and moved to cause an obstruction during the descent ? the aircraft is symmetrical, are the tank layouts ?
Just a thought, as if it was water it would melt and leave no trace.
I have had the same thoughts for a while - expecially after having read the latest report several times.
No discrepancies of serious nature has been found on the aircraft - all systems seem to have been working - all regulations with regard to keeping correct fuel temperatures are adhered to - etc - etc.
But it crashed anyway!
I am afraid that this accident may never be fully explaned