FREE FAA-107 Effects of Weather on sUAS Performance Questions and Answers

Question 1

What effect does high density altitude have on the performance of a small unmanned aircraft?

Accepted Answer

Performance is decreased due to reduced propeller efficiency.

Answer

Performance is increased due to less air resistance.

Answer

Performance is not affected by density altitude.

Answer

Performance is only affected by the aircraft's weight.

Question 2

Which combination of conditions would lead to the highest density altitude?

Accepted Answer

High altitude, high temperature, and high humidity.

Answer

Low altitude, low temperature, and low humidity.

Answer

High altitude, low temperature, and low humidity.

Answer

Low altitude, high temperature, and low humidity.

Question 3

What are the characteristics of a stable air mass?

Accepted Answer

Smooth air, poor visibility, and stratiform clouds.

Answer

Turbulent air, good visibility, and cumuliform clouds.

Answer

Showery precipitation, strong surface winds, and good visibility.

Answer

Thunderstorms, turbulence, and hail.

Question 4

A temperature inversion can create a hazard for sUAS operations primarily because it can lead to:

Accepted Answer

Significant wind shear and poor visibility.

Answer

Increased air density and better performance.

Answer

The rapid formation of cumulonimbus clouds.

Answer

Decreased propeller efficiency regardless of altitude.

Question 5

When flying an sUAS, structural icing is most likely to form when:

Accepted Answer

Flying through visible moisture at temperatures at or below freezing.

Answer

The temperature is below freezing and the air is dry.

Answer

The relative humidity is 100%, regardless of temperature.

Answer

Flying at any altitude above the freezing level.

Question 6

What is the primary danger associated with thunderstorms for an sUAS?

Accepted Answer

Extreme turbulence and wind shear.

Answer

Radio frequency interference.

Answer

Low ceilings and poor visibility.

Answer

High density altitude.