GreatBear, even if the plane had power and was more or less under control until it's last ACARS message I suspect it could not be outside the 40 mile limit after a controlled glide into the water.
This has me a little confused, wasn't the last ACARS message a advisory regarding cabin vertical speed. Wouldn't this suggest that the event was well underway, i was always of the impression that this indicated that the pressurization system was warning that it could not keep up with the rate of decent and had little or nothing to do with blocked pitot, am i wrong? if so then i must have missed that discussion some where, if i am not then surely this would indicate that the end was near and so the possible position of the aircraft.