automated messages

Could the 4 hijacked planes have had an automated message system like flight AF447 which disappeared this week ?

John MITCHELL
Herblay FRANCE

bonjour ,

with the disappearing of the aeroplane AF 447 this week I have just learned that there was an automated message system on the plane sending flight parameters information to the Air France headquarters.

Can any pilot reading this tell me if the four hijacked planes on the 11th of September 2001 send automated messages in the same way to the company headquarters. If it is the case what can we learn for 911 ?

Yours

John