In a TV interview, the chair of the NTSB, said that the near miss with a Southwest Airlines flight in Chicago was due to the Flexjet crew's failure to hold.

The head of the National Transportation Safety Board (NTSB) has pinned blame on the near-collision at a Chicago airport earlier this week on the crew of the private jet that passed in front of a

National Transportation Safety Board chair Jennifer Homendy says investigations are ongoing into the near-miss between a Southwest airliner and a Flexjet in Chicago.