'Following the investigation of the disastrous mid-air collision of two aircraft over
'Present traffic control radars give range and bearing. A new type will, in addition, give altitude to within 500 feet,' adds the story, 'James L Anast, research director for the FAA, recently announced that successful testing of such a unit had been conducted at
'There has been some comment to the effect that such equipment would have enabled ground control to prevent the New York collision', continues the report, 'such comment carried the implication that the FAA (or someone) has been negligent in not pushing development of height-indicating radar for civilian traffic control with over-riding priority.'