rtokens: " We considered it as being missing until about 0600 ( 4:30 A.M. EST ) ( 0930 GMT ) .
pos: DT VBD DT JJ NN DT NN VBN IN DT NN , PRP VBD .
tokens: That was the last communication the aircraft made with the airport , he added .
ltokens: Snow said the plane last reported to air traffic control at about 3 A.M. local time / 1:30 A.M. EST ( 0630 GMT ) when it began its final approach about 10 miles ( 16 km ) from the airport in this east coast Canadian province .