TERRE HAUTE, Ind. --
Problems with the primary radar at Terre Haute's airport have forced air traffic controllers to use a backup radar site near Indianapolis and increase the spacing between planes. Air traffic controllers say the problems began two years ago when a 10-foot tall security fence was erected around the airport. The Federal Aviation Adminisration isn't sure the fence is the cause of the problems and is investigating.
The airport had been using the Indianapolis-area radar overnight, but the FAA ordered its use 24-hours a day earlier this month.
Terre Haute International Airport doesn't have regularly scheduled passenger service. Indiana State University students use the airport for flight training.
On the Net: http://www.huf.com/