UAS Navigation 3

Question 1

A remote pilot notes that isogonic lines on a sectional chart show '10°E' variation. If the magnetic compass reads 270°, what is the true heading?

Accepted Answer

280°

Answer

With 10°E variation, true heading = magnetic heading + easterly variation = 270° + 10° = 280°.

Question 2

Which chart scale is most useful for detailed local navigation by a sUAS remote pilot?

Accepted Answer

1:250,000 (terminal area chart)

Answer

Terminal area charts at 1:250,000 scale provide the greatest detail for operations near busy metropolitan airports.

Question 3

What does a blue segmented line on a sectional chart typically represent?

Accepted Answer

Victor airway centerline

Answer

Blue segmented lines on sectional charts depict Victor airways, which are low-altitude airways centered on VOR stations.

Question 4

A sUAS pilot wants to fly 5 miles north of the launch point. Using a sectional chart, approximately how many minutes of latitude must they travel?

Accepted Answer

5 minutes

Answer

One minute of latitude equals approximately one nautical mile, so 5 nautical miles north equals approximately 5 minutes of latitude.

Question 5

In GPS navigation, what does HDOP (Horizontal Dilution of Precision) measure?

Accepted Answer

The geometric quality of satellite positioning affecting horizontal accuracy

Answer

HDOP reflects how satellite geometry affects horizontal position accuracy; a lower HDOP value means better geometric spread and higher accuracy.

(UAS) Unmanned Aircraft Systems Certified Practice Test