FAA Topography and Terrain Features 2

Question 1

On a sectional chart, what symbol is used for a man-made obstruction with a height greater than 1,000 feet AGL that is lighted?

Accepted Answer

Open triangle with lightning bolt

Answer

A high obstruction above 1,000 feet AGL with lighting is shown on sectional charts as an open triangle with a lightning bolt symbol indicating the presence of hazard lights.

Question 2

On a sectional chart, the two numbers shown next to an obstruction symbol (e.g., 1549/249) represent what?

Accepted Answer

Elevation MSL / height AGL in feet

Answer

The two numbers beside an obstruction on a sectional chart show the elevation of the top of the structure in feet MSL (upper number) and the height above ground level in feet (lower number in parentheses or below).

Question 3

What does a group obstruction symbol (multiple obstruction symbols clustered together) on a sectional chart represent?

Accepted Answer

A wind farm or multiple towers in close proximity

Answer

Grouped obstruction symbols on a sectional chart typically represent wind farms, antenna farms, or clusters of towers in close proximity that pose hazards to low-flying aircraft.

Question 4

On a sectional chart, power transmission lines are depicted by what symbol?

Accepted Answer

A line with perpendicular tick marks or T symbols

Answer

Power transmission lines on sectional charts are shown as a line with small perpendicular tick marks or T-shapes along it, warning pilots of overhead wire hazards.

Question 5

On a sectional chart, a dashed contour line indicates what about the enclosed terrain?

Accepted Answer

Terrain below sea level (depression)

Answer

Dashed contour lines on a sectional chart indicate depressions or basins where terrain elevation is below the surrounding land, such as dry lake beds or sinkholes.

FAA - Sectional Chart Practice Test

FAA - Sectional Chart Practice Test

FAA Topography and Terrain Features 2