( CNN ) -- Federal officials are investigating a `` potential conflict '' between two planes at Chicago 's O'Hare International Airport , which happened shortly after Vice President Joe Biden 's plane landed . `` It has nothing to do with Biden 's plane , '' a Federal Aviation Administration official said . An investigation by the National Transportation Safety Board will look into the incident Monday morning between an ExpressJet plane taking off from one runway , while a SkyWest jet was preparing to land on an intersecting airstrip , an official told CNN Homeland Security correspondent Jeanne Meserve . The SkyWest aircraft , which was coming in behind the other jet , was ordered to circle around the airport after an air traffic controller recognized the potential conflict , the official said . It made an otherwise normal landing . The ExpressJet takeoff was not altered . The flights were being handled by different air traffic controllers , according to the official , who said there was `` no operational error '' -- a term used when flights get too close to each other . The official did not say how close the planes were . The incident took place shortly after Biden 's plane landed at the airport for the inauguration of Chicago Mayor Rahm Emanuel .
The incident took place shortly after Vice President Joe Biden 's plane landed . It involved two planes at O'Hare International Airport in Chicago . `` It has nothing to do with Biden 's plane , '' an FAA official says . Federal officials are investigating .