CNN CNN Newsroom May 23, 2014 13:05:00
Violation of federal air regulations. this is what's called an operational error. that means the air traffic controller made a mistake. they're supposed to be three miles apart. depending upon the phase of the flight, 2,000 feet or more. so this was very, very close. >> david, i know newark airport changed its rules regarding runway use for takeoffs and landings. does every airport need to do this? >> there's a lot of things that had to do with newark airport, including the closure of one of the airports themselves. when you look at how to change that and where it goes, it changes the operatio...