The black boxes of the ATR-72/500 that crashed yesterday against the old control tower of Koh Samui, Thailand, were it was landing after taking off from Krabi with 68 passengers and 4 crewmembers on board. The pilot has been killed on impact, while tenths of people have been injured (see AVIONEWS). Currently both analysis on the flight recorders and testimony collection are underway. A crucial one...