on a flight last night from reyoi to paris. >> the flight left rio bound for paris, it's last radar contact before heading over the ocean was at 9:30. at 10:00 p.m. the plane entered an area of extreme weather. then transmitted an automatic text message to its base that its electrical systems were malfunctioning. >> eventually that air france pla plane's wreckage was found. we'll have more on that for you in a moment. what they were able to determine about why that plane went down is that one of those pitot tubes clogged with ice and particularly if a plane encounters with extreme weather, it's not an unusual problem. but in this case it ended up