White Triangle on a Low En Route Chart depicts what?

White Triangle on a Low En Route Chart depicts what?

• A. Non-Compulsory (Non Mandatory) Position Report
• B. Mandatory position report
• C. Course change
• D. Weather report

Answer: (A)

A white triangle on a low en route chart marks a position reporting point that is optional. Pilots are not required to report when passing this point, but they may voluntarily report their position to ATC if they want to provide an update on location, altitude, and estimated route. This helps ATC with situational awareness and traffic management, but there’s no mandatory reporting requirement at this point. Other symbols indicate mandatory reporting points or other items, so the triangle specifically denotes that reporting is non-compulsory.