Navigation Flashcards

When using a sectional chart, what does a magenta dashed line indicate?

Answer: Class E airspace starting at 700 ft AGL

A magenta dashed line on sectional charts denotes the boundary where Class E airspace begins at 700 feet AGL.

What is the primary purpose of a VFR waypoint depicted on a sectional chart?

Answer: To provide a named reference point for visual navigation

VFR waypoints are named reference points that help pilots navigate visually without requiring instrument references.

A sUAS pilot is operating near a congested area and needs to determine the MSL elevation of terrain. Which chart feature provides this information?

Answer: Contour lines and spot elevations

Contour lines and spot elevations on sectional charts indicate terrain elevation above mean sea level.

What does the term 'dead reckoning' refer to in UAS navigation?

Answer: Estimating current position based on a known past position, speed, heading, and elapsed time

Dead reckoning calculates a present position from a known starting point using speed, heading, and time without external reference.

On a sectional chart, what symbol indicates an obstruction between 1,000 and 1,999 feet AGL?

Answer: A bold obstruction symbol with elevation figures

Obstructions between 1,000–1,999 feet AGL are depicted with a bold obstruction symbol accompanied by MSL and AGL elevation figures.

When a remote pilot references a sectional chart, the longitude lines (meridians) run in which direction?

Answer: North to south (vertical)

Meridians of longitude run north to south and converge at the geographic poles.

What is the significance of the maximum elevation figure (MEF) shown in each quadrangle of a sectional chart?

Answer: It represents the highest known feature (terrain or obstacle) in that quadrangle, rounded up for safety

The MEF is the highest elevation of terrain or obstacles within a quadrangle, rounded up to the nearest 100 feet, to assist in terrain clearance.