Editing Air traffic controller (section)

=== Introduction of radar and radio communication ===
[[File:A Waaf Corporal Ach-gd Watches From the Control Tower As An Aircraft Comes in CH8136.jpg|thumb|A [[Women's Auxiliary Air Force]] Corporal watching an aircraft approach from a control tower. On the table are a radio receiver, hand-held [[Signal lamp|Aldis signalling lamp]], and log book.]]
In 1930 [[Cleveland Airport]] opened the first tower using two-way radio communication and in 1946 [[Weir-Cook Airport|Indianapolis International Airport]] (then Weir-Cook airport) became the first civilian airport to have radar installed.<ref name=":1" /> This allowed controllers to monitor aircraft positions in real-time, even in poor visibility conditions. Together with radio communication with the pilots, this laid the foundation for [[Ground-controlled approach|Ground Control Approaches]] and later [[Instrument landing system|Instrument landing system (ILS)]].<ref name="auto1">{{Cite web |date=2021-10-21 |title=Air Traffic Control |url=https://airandspace.si.edu/explore/stories/air-traffic-control |access-date=2025-02-05 |website=airandspace.si.edu |language=en}}</ref> These innovations fundamentally changed the profession of air traffic controllers from guidance and ground controlling to actively guiding planes that are already in the air and making sure they land safely.<ref name="auto1"/>