On a flight progress strip, how is an aircraft conflict indicated?

On a flight progress strip, how is an aircraft conflict indicated?

• A. Blue X
• B. Red W
• C. Green S
• D. Yellow A

Answer: (B)

The main idea here is that flight progress strips use color-coded symbols to flag urgent events. A red mark accompanied by the letter W signals a potential loss of separation between two aircraft, i.e., a conflict. The red color conveys urgency, and the W—standing for warning—tells the controller to take action, such as re-sequencing, issuing headings or speed changes, or coordinating with the flight crew, to prevent an unsafe situation. Other colors like blue, green, or yellow are used for other statuses or conditions and do not indicate an active conflict, so they don’t carry the same sense of immediate risk.

The main idea here is that flight progress strips use color-coded symbols to flag urgent events. A red mark accompanied by the letter W signals a potential loss of separation between two aircraft, i.e., a conflict. The red color conveys urgency, and the W—standing for warning—tells the controller to take action, such as re-sequencing, issuing headings or speed changes, or coordinating with the flight crew, to prevent an unsafe situation. Other colors like blue, green, or yellow are used for other statuses or conditions and do not indicate an active conflict, so they don’t carry the same sense of immediate risk.