Interesting that much of the speculation so far has concentrated on the fact that the Tup154 may not have been listening, or may have been 'lost' on another frequency.
Both the BBC and Sky News have had experts along who state that this temporary communication failure is rare. In my experience (at whatever center) a/c getting the wrong frequencies, misdialling or otherwise being temporarily incommunicado is a daily occurrence.
Without really wishing to join in the speculation, I would like to ask whether these occurrences, and particularly this incident, would be possible if all a/c and all centers (other than just Maastricht) had a/g link?
All our thoughts are with the victims, their families and the controllers at their respective units. There but for the Grace of God......
