Icing , Fog, Density Altitude (Part 107) and Loading

Front

The presence of ice pellets at the surface is evidence that there

Back

is a temperature inversion with freezing rain at a higher altitude.

Front

In which environment is aircraft structural ice most likely to have the highest accumulation rate? Cumulus clouds with below freezing temperatures, Freezing drizzle, Freezing rain.

Back

Freezing rain.

Front

What environment is most conducive to frost formation? Options: Dewpoint of surface is below freezing, dewpoint is above freezing. Surface temperature is below freezing, air temperature is below freezing. Surface temperature is above freezing, air temperature is below freezing.

Back

Dewpoint of surface is below freezing, dewpoint is above freezing.

Front

In which situation is advection fog most likely to form? A warm, moist air mass on the windward side of mountains. An air mass moving inland from the coast in winter. A light breeze blowing colder air out to sea.

Back

An air mass moving inland from the coast in winter.

Front

An air mass moving inland from the coast in winter is likely to result in

Back

fog.

Front

What types of fog depend upon wind in order to exist?

Back

Advection fog and upslope fog.

Front

Low-level turbulence can occur and icing can become hazardous in which type of fog?

Back

Steam fog.

Front

What is the best way for a remote pilot to determine the likelihood of local fog formation?

Back

Monitor the temperature/dew point spread.

Front

How would high density altitude affect the performance of a small unmanned aircraft?

Back

Decreased performance.

Front

If the outside air temperature (OAT) at a given altitude is warmer than standard, the density altitude

Back

higher than pressure altitude.