We re tracking what you need to know for this very cold day. good morning, everyone, welcome to early start. i m john berman. and i m christine romans. it s wednesday, january 7th 4:00 a.m. in the east. 11 days into the search for airasia flight 8501. the tail has been found. this is potentially crucial here. divers struggling against stormy seas near zero visibility. they have found at least part of the tail section of that plane. this could be a major find because the black boxes in airbus 832200 are housed in the section. anna cornyn from surabaya indonesia. reporter: a major find for airasia flight 8501. the search and recovery teams discovered the tail of the aircraft which contains the vital black box flight recorders. now, they found the tail by