transponder that helps air traffic controllers track the plane goes off. flight 370 hasn't been heard from or seen since. the newspaper says they've asked malaysia airlines and the civil aviation authority to confirm the transcripts but the prime minister's office would only say they won't release that data. now this transcript does not tell us what went wrong on the plane but at the very least it answers the question of whether the pilot said anything odd that may indicate a problem in the cockpit. renay marsh, cnn, washington. >> and you're watching cnn newsroom. coming up, the agony for families of the 239 people aboard the plane, they demand answers from malaysian officials but receive little assurance. plus the tale of two signing ceremonyiest, one in brussels, the other in moscow. so how could they affect events