the.com/air traffic control
strangers in a dark room keep your plane from meeting another plane on purpose.
means a ground-based system of radar, radio, and humans that sequences aircraft so they take off, cruise, and land without touching each other.
from born in the 1920s with lit beacons guiding night mail planes, then formalized after a 1956 grand canyon midair collision killed 128 and forced the US to build real radar-based control.
busiest toweratlanta handles a landing or takeoff every 45 seconds
strict separationcontrollers must keep planes 3 miles or 1000 feet apart
human bottleneckmost delays trace to controller staffing, not weather
radar isn't real timescreens show positions seconds old, controllers predict ahead
for instance
faa grand canyon rule — 1956 collision over arizona created modern US air traffic rules
nats swanwick — controls most uk airspace from one center in hampshire
jfk approach control — sequences three major new york airports through shared crowded sky
dfs karlsruhe — germany's upper airspace center handles some of europe's busiest overflights