Washington ( CNN ) -- The rules for takeoffs and landings at Newark Liberty International Airport have changed after two planes came within yards of colliding last month , the Federal Aviation Administration said Tuesday . United Express Flight 4100 , an Embraer ERJ-145 operated by ExpressJet , was cleared to take off on runway 4R at the same time United Airlines Flight 1243 , a Boeing 737 , was landing on the intersecting runway 29 on April 24 . The 737 flew 135 yards vertically and 50 yards laterally from the smaller regional jet . `` The FAA has investigated the recent air traffic incident at Newark and has taken steps to prevent similar incidents from occurring in the future , '' according to a statement from the agency . Runway 29 is no longer used for arriving flights when planes are taking off on the intersecting runway 4R . In the April incident , on air traffic control radio captured by the website LiveATC.net , the tower can be heard telling the pilot of the 737 to `` go around '' and circle the airport . The controller told the ERJ to watch out for the larger plane on the right . `` Yeah , we were putting the nose down , and , he was real close , '' the pilot responds . Close calls at Newark have happened before , including four in 2008 , according to a Department of Transportation inspector general 's report . In one instance , on January 16 , 2008 , a 737 from Continental Airlines ( which has since merged with United ) was at risk of hitting an Embraer 145 operating as Continental Express . It happened at the same intersection and involved the same type of aircraft as April incident , but the planes never got within a mile of each other . That case was attributed to a mistake by an air traffic controller . The National Transportation Safety Board will not make a determination of what caused the most recent incident until it releases its final report , which is expected to take months . United Airlines is working with the agency to investigate the incident , an airline spokeswoman has told CNN . CNN 's Laura Dolan contributed to this report .
The FAA changes runway rules at site of near miss at Newark Airport in April . The aircraft were operating on intersecting runways during the April incident . TL;DR A small plane crashed into a building and burst flames after it hit an airport fence last week, killing one person and injuring two others.