Air traffic controller's concern, 4 letters
Air traffic screen sight, 4 letters
Aircraft representation, at times, 4 letters
Attention-getter in the control tower, 4 letters
Computer screen sound, 4 letters
Control tower image, 4 letters
Dot on a radar screen, 4 letters
High-pitched electronic sound, 4 letters
Image on a radar screen, 4 letters
Inconsequential interruption, 4 letters
Inconsequential upturn, 4 letters
Insignificant entity, 4 letters
Insignificant movement, 4 letters
Insignificant upturn, 4 letters
It may be on the horizon, 4 letters
It might be on one's radar, 4 letters
It's barely noticeable, 4 letters
It's hardly a trend, 4 letters
It's monitored by an air traffic controller, 4 letters
It's on the horizon or on radar, 4 letters
Jet, to an air traffic controller, 4 letters
Momentary disruption, 4 letters
Plane on a radar screen, 4 letters
Plane, in a control tower, 4 letters
Point on a radar screen, 4 letters
Radar screen display, 4 letters
Radar screen figure, 4 letters
Radar screen indicator, 4 letters
Radar screen reading, 4 letters
Radar-screen feature, 4 letters
Signal showing a storm's position, 4 letters
Sound on classic Pong, 4 letters
Spot in the control tower, 4 letters
Spot of light on a radar screen, 4 letters
Spot on an oscilliscope, 4 letters
Sub, on a radar screen, 4 letters
Sub, on a sonar screen, 4 letters
Submarine, on sonar, 4 letters
Submarine, to a radarman, 4 letters
Thing on a radar screen, 4 letters
Tiny bump on a graph, 4 letters
Tiny light that's here and gone, 4 letters
Tiny percentage in the polls, 4 letters
Tiny position indicator, 4 letters
A sudden minor shock or meaningless interruption, 4 letters
A radar echo displayed so as to show the position of a reflecting surface, 4 letters
Appeared on screen, in a way, 7 letters
Bogeys, on radar screens, 5 letters
Bogeys, to radar operators, 5 letters
Censors, in a sense, 5 letters
Control tower images, 5 letters
Control tower observations, 5 letters
Dots on a radar screen, 5 letters
Little things on screens, 5 letters
Planes, in the control tower, 5 letters
Radar screen images, 5 letters
Ships, on a radar screen, 5 letters
Short-lived phenomena, 5 letters