Question

ATC regulations require control towers to maintain a visibility checkpoint chart or list of visibility markers posted in the tower. Upon request, EUs will provide whatever assistance is necessary to help prepare a chart or markers of suitable objects for determining tower visibility. What is the purpose of the visibility checkpoint chart or list of visibility markers?

1) To ensure the safety of aircraft during takeoff and landing
2) To assist air traffic controllers in determining the visibility from the control tower
3) To provide a reference for pilots regarding visibility conditions at the airport
4) To help monitor and track weather conditions at the airport

Answer 1

The visibility checkpoint chart or list of visibility markers is used to assist air traffic controllers in determining visibility from the control tower, which is crucial for aircraft traffic management.

Step-by-step explanation:

The purpose of a visibility checkpoint chart or list of visibility markers is primarily to assist air traffic controllers in determining the visibility from the control tower. These checkpoints serve as reference points to measure the observable range and ensure that air traffic controllers have accurate visibility information, which is critical for managing the traffic flow of aircraft, particularly during takeoff and landing phases. While the visibility markers can indirectly aid in the safety of aircraft and provide a situational awareness of visibility conditions, their direct purpose is to assist controllers in maintaining a clear and accurate visual reference of the airspace surrounding the airport.