Evidence indicates an engine failure 10 seconds after launch , Orbital 's CEO says . The turbo pump in one of the engines likely failed , he says . Space Sciences still plans to stay on track with its $ 1.9 billion launch contract , he says .
Evidence indicates an engine failed 15 seconds after ignition , Orbital 's CEO says . The turbo pump in one of the engines likely failed , he says . Orbital Sciences still plans to stay on track with its $ 1.9 billion NASA contract , he says .