cockpit voice recording published by german newspaper bild. most terrifying is the description of captain patrick sonderheimer s frantic efforts to get back in the cockpit. screaming for god s sake open the door. we have senior correspondent frederik pleitgen in cologne. reporter: it started off normally and it was delayed. before the flight took off, patrick sonderheimer told lubitz because of the delay, he had not managed to go to the bathroom in barcelona. lubitz said he could go anytime. it seems he may have been setting sonderheimer up to leave the cockpit. the flight takes off and once they reach 38,000 feet lubitz says to sonderheimer you can go