ATC System and NAS Questions and
Answers Latest Version Already Passed
What is the primary purpose of the National Airspace System (NAS)?
✔✔To ensure the safe and efficient movement of aircraft across controlled and uncontrolled
airspace.
Which organization is responsible for managing the ATC system in the United States?
✔✔The Federal Aviation Administration (FAA).
What does the Traffic Collision Avoidance System (TCAS) do?
✔✔It alerts pilots to potential mid-air collisions and provides avoidance instructions.
Why is controlled airspace divided into different classes?
✔✔To organize air traffic and apply appropriate regulations based on altitude, location, and
aircraft type.
What is the function of an Air Route Traffic Control Center (ARTCC)?
✔✔To manage and control en route aircraft operating at high altitudes over large regions.
1
,Which ATC facility is responsible for guiding aircraft during takeoff and landing?
✔✔The Control Tower.
What system allows pilots and ATC to exchange digital messages for clearance and instructions?
✔✔Controller-Pilot Data Link Communications (CPDLC).
What is the role of TRACON in the ATC system?
✔✔To manage aircraft transitioning between airports and en route airspace.
What is the purpose of a Standard Instrument Departure (SID) procedure?
✔✔To provide a structured and efficient route for aircraft departing an airport.
Which frequency is used for emergency communication in the NAS?
✔✔121.5 MHz.
Why is ADS-B an important technology in modern ATC operations?
2
, ✔✔It provides real-time aircraft tracking using GPS, improving situational awareness and
efficiency.
What is the function of Flight Service Stations (FSS) in the NAS?
✔✔To provide pilots with weather briefings, flight planning assistance, and other essential flight
services.
How do NOTAMs help pilots and ATC maintain safety in the NAS?
✔✔They inform pilots about temporary or permanent changes affecting flight operations, such
as runway closures and airspace restrictions.
What does a Mode C transponder provide to ATC?
✔✔Altitude and position information of an aircraft.
Why is NextGen important for the future of the NAS?
✔✔It modernizes air traffic management by using satellite-based navigation and digital
communications.
What is the primary function of the En Route Automation Modernization (ERAM) system?
3
Answers Latest Version Already Passed
What is the primary purpose of the National Airspace System (NAS)?
✔✔To ensure the safe and efficient movement of aircraft across controlled and uncontrolled
airspace.
Which organization is responsible for managing the ATC system in the United States?
✔✔The Federal Aviation Administration (FAA).
What does the Traffic Collision Avoidance System (TCAS) do?
✔✔It alerts pilots to potential mid-air collisions and provides avoidance instructions.
Why is controlled airspace divided into different classes?
✔✔To organize air traffic and apply appropriate regulations based on altitude, location, and
aircraft type.
What is the function of an Air Route Traffic Control Center (ARTCC)?
✔✔To manage and control en route aircraft operating at high altitudes over large regions.
1
,Which ATC facility is responsible for guiding aircraft during takeoff and landing?
✔✔The Control Tower.
What system allows pilots and ATC to exchange digital messages for clearance and instructions?
✔✔Controller-Pilot Data Link Communications (CPDLC).
What is the role of TRACON in the ATC system?
✔✔To manage aircraft transitioning between airports and en route airspace.
What is the purpose of a Standard Instrument Departure (SID) procedure?
✔✔To provide a structured and efficient route for aircraft departing an airport.
Which frequency is used for emergency communication in the NAS?
✔✔121.5 MHz.
Why is ADS-B an important technology in modern ATC operations?
2
, ✔✔It provides real-time aircraft tracking using GPS, improving situational awareness and
efficiency.
What is the function of Flight Service Stations (FSS) in the NAS?
✔✔To provide pilots with weather briefings, flight planning assistance, and other essential flight
services.
How do NOTAMs help pilots and ATC maintain safety in the NAS?
✔✔They inform pilots about temporary or permanent changes affecting flight operations, such
as runway closures and airspace restrictions.
What does a Mode C transponder provide to ATC?
✔✔Altitude and position information of an aircraft.
Why is NextGen important for the future of the NAS?
✔✔It modernizes air traffic management by using satellite-based navigation and digital
communications.
What is the primary function of the En Route Automation Modernization (ERAM) system?
3
