ATSA Air Controller Knowledge 4

Question 1

What is the definition of 'conflict alert' in ATC radar systems?

Accepted Answer

An automated warning that two aircraft are predicted to violate separation minima

Answer

Conflict alert is an automated radar function that warns controllers when two tracked aircraft are predicted to lose required separation.

Question 2

During a ground stop, which aircraft are typically exempt from holding?

Accepted Answer

Aircraft that declared a fuel emergency

Answer

Aircraft declaring a fuel emergency are prioritized for landing regardless of ground stop or flow programs.

Question 3

What is the purpose of a LAHSO (Land and Hold Short Operations) clearance?

Accepted Answer

To authorize simultaneous use of intersecting runways while maintaining separation

Answer

LAHSO allows controllers to land aircraft on intersecting runways simultaneously by requiring aircraft to hold short of the intersection.

Question 4

A controller notices two aircraft on radar are converging at the same altitude. The first action should be to:

Accepted Answer

Issue an immediate altitude change or turn to one or both aircraft to resolve the conflict

Answer

The controller's first priority is to issue an immediate clearance to resolve the conflict and restore separation.

Question 5

What does 'IMC' stand for and how does it affect ATC responsibilities?

Accepted Answer

Instrument Meteorological Conditions; ATC is responsible for all separation

Answer

IMC means Instrument Meteorological Conditions, where visibility is too low for visual flight and ATC must provide all IFR separation.

ATSA - Air Traffic Skills Assessment Practice Test