A $12 million radar system at O'Hare International Airport hailed by air traffic controllers after its introduction last year is now the target of criticism by the union.
The new airport surface detection equipment is intended to give controllers a clearer picture of where planes are on the air field.
It combines ground radar with transponders on aircraft and a sophisticated software program than warns of runway conflicts.
But the head of the O'Hare National Air Traffic Controllers Association, Joseph Bellino, said Thursday that the equipment doesn't work when it snows and doesn't show all objects on the field.
More in link below: 
Union Unhappy With Radar 
Linear Mode
