"Mr Wuthichai also defended the safety standards of the One-Two-Go airline, saying it had met all the safety standard requirements in line with what is laid down by the International Civil Aviation Organisation (ICAO)."
Just about says it all to me. We can go on looking for the active failures of the flight crew etc, etc, but what about the error producing conditions already present in the system.
At the end of the day when the people running the show come up with statements like this, we know it is going to be a long, long time before there is any significant change to the safety culture within most of Asia.
(A similar statement was made by Indonesian authorities following Yogojakarta - I think it was "accidents happen")