A Temporary Flight Restriction (TFR) is pilot jargon for airspace which has temporarily been closed off for public flight. TFR's are enacted around space shuttle launches, around airshows and other large outdoor events, around the president & vice president when they travel. On September 11th 2001 the entire country was basically put under a TFR until further notice. Aircraft which where already in communication with ATC were vectored to the nearest appropriate airport.
Air traffic control is responsible for safely separating aircraft. Air traffic controllers separate traffic in and around larger airports as well as any aircraft flying IFR (Instrument flight rules).
Regional or local Air Traffic Control centres guide most aircraft in the sky.Regional or local Air Traffic Control centres guide most aircraft in the sky.
Air Traffic Control Use Radar Radio Detection and Ranging to track aircraft! Air Traffic Control Use Radar Radio Detection and Ranging to track aircraft!
This person controls the aircraft traffic. Helps the planes avoid each other in the air, keeps planes on course that is safe. In the 7110.65T, also known throughout the Air Traffic Control as the Bible, this is the answer. "The primary purpose of the ATC system is to prevent a collision between aircraft operating in the system and to organize and expedite the flow of traffic, and to provide support for National Security and Homeland Defense."
ATC (Airport Traffic Control Tower)
Reference: 7110.65T Air Traffic Control Manual for an aircraft on the ground: Taxi clear of landing area or runway in use for aircraft in the air: Airport unsafe- Do not land for vehicles on the ground: Clear the taxiway/runway
Aeronautical Engineering Aviation Aircraft Systems Air Traffic Control Accounting
The person on the ground in front of the aircraft is called a Marshaller, the person in the control tower is an Air Traffic Controller (or a Ground Movement Controller)
Joseph George Schatz has written: 'The optimal control of merging aircraft' -- subject(s): Air traffic control, Mathematical optimization
If the aircraft is in flight, a steady green light signal from the control tower means cleared to land. If the aircraft is on the ground, it means cleared for takeoff. If the light is aimed at ground vehicles or foot traffic, steady green means cleared to cross the runway, or proceed.
Aircraft Conflict/Mode C Intruder Alert and Terrain/Obstruction Alert
Ground control, on initial contact.