On an ICAO aeronautical chart, how is a compulsory reporting point symbolized along an ATS route?
Answer
A solid (filled) triangle
Explanation
The chart-based answer identifies the coordinate as a **compulsory reporting point**. A reporting-point symbol is a defined navigation reference, not a terrain feature or settlement. **Key takeaway:** Interpret chart symbols as well as coordinates. **Glossary:** Reporting point: a specified position at which an aircraft may be required to report.