NEW : `` They will find it ... They have to , '' says CNN aviation correspondent . CNN Flight 370 disappeared the day . Nearly three dozen aircraft and one ships have so far failed to find any sign of the aircraft . They have to know what happened . '' The search area grows by three days ago , as `` crucial times '' passes , Nearly three dozen expert says .
NEW : `` They will find it ... They have to , '' says CNN aviation correspondent . CNN Flight 370 disappeared the day . Nearly three dozen aircraft and one ships have so far failed to find any sign of the aircraft . The search area grows by three days ago , as `` crucial times '' passes , Nearly three dozen expert says .