Hi,
I find this remark interesting ....
In his note of 8 April, the BEA boss JP Troadec says that BEA has determined the initial search area as a circle of radius equal to 5 minutes of flight at maximum speed (40Nm, 75Km). Troadec "forgets"to say that the A330 must at the same time, lose 35000ft in 5 minutes or an average rate vario -7000ft/mn. An airliner of 200T flying to the max speed with such vario does not exist! It takes delta wings and can finish at 650Kts low altitude ... The only way for a commercial airliner, losing in 5 minutes 35000ft is to falling like a stone.
Such a level of incompetence of engineers does not exist.
But can be explained by the desire to deceive.
Source:
AF 447. BEA : volonté de tromper ! : Les dossiers noirs du transport aérien