FAA Ground School Practice Test

What is the maximum altitude for a lighted obstacle shown on an aeronautical chart?

1. 200 ft MSL

2. 300 ft MSL

3. 400 ft MSL

4. 500 ft MSL

The correct answer is: 200 ft MSL

The maximum altitude for a lighted obstacle shown on an aeronautical chart is typically indicated as 200 feet MSL (Mean Sea Level). This altitude is associated with obstacles that are of relatively lower height compared to taller structures which might be represented differently. The identification of lights on obstacles helps pilots recognize potential hazards during flight, especially in low visibility situations. In the context of aeronautical charts, the designation of specific light patterns or heights serves to inform pilots about the presence of these obstacles, indicating that they extend up to 200 feet above the surrounding terrain. Proper knowledge of these altitude markers is essential for safe navigation and flight planning, ensuring that pilots can avoid collisions with such obstacles. Higher altitudes are often reserved for more significant buildings or structures and are represented differently on charts. Thus, understanding the context and implications of a lighted obstacle at 200 feet is critical for maintaining safe flight operations.