Quiz: Cold Weather Operations

As winter sets in, it’s more important than ever to understand how the cold weather will not only affect the aircraft performance but also your preflight and weather planning. Use this quiz to test you cold weather flying knowledge.

In which environment is aircraft structural ice most likely to have the highest accumulation rate?

Wet snow.

Cumulus clouds with below freezing temperatures.

Freezing drizzle.

Freezing rain.

When is aircraft performance at its peak?

When flying at an altitude of 10,000 feet or more.

The cold, crisp air of winter.

During the hot, humid days of summer.

At low pressure altitudes.

Which conditions result in the formation of frost?

The temperature of the collecting surface is at or below freezing and small droplets of moisture are falling.

When dew forms and the air temperature is below freezing.

Temperature of the collecting surface is below the dewpoint of surrounding air and the dewpoint is colder than freezing.

When supercooled rain drops fall onto a freezing collecting surface.

Frequent inspections should be made of aircraft exhaust manifold-type heating systems to minimize the possibility of:

exhaust gases leaking into the cockpit.

a cold-running engine due to the heat withdrawn by the heater.

a power loss due to back pressure in the exhaust system.

excessively hot cabin air temperatures.

What type of weather is forecast for the area to the northeast of area D?

Continuous light snow.

Freezing drizzle.

Freezing fog.

Moderate or heavy snow showers.

During preflight in cold weather, crankcase breather lines should receive special attention because they are susceptible to being clogged by:

ice from crankcase vapors that have condensed and subsequently frozen.

congealed oil from the crankcase.

moisture from the outside air which has frozen.

small rodents or birds nesting in the engine comparment.

An aircraft cabin should be preheated in cold weather operations to:

Ensure the comfort of the passengers before taxi.

Never preheat the airplane cabin before boarding due to accumulation of moisture on the instruments.

Melt frost from the control surfaces.

Ensure the instruments will not stick.

How will frost on the wings of an airplane affect takeoff performance?

Frost will change the camber of the wing, increasing its lifting capability.

Frost will disrupt the smooth flow of air over the wing, adversely affecting its lifting capability.

Frost will cause the airplane to become airborne with a higher angle of attack, decreasing the stall speed.

Fost will not affect the takeoff performance of an airplane.

If necessary to take off from a slushy runway, the freezing of landing gear mechanisms can be minimized by:

delaying gear retraction until cruise climb is established.

increasing the airspeed to V LE before retraction.

leaving the gear extended.

recycling the gear.

Carburetor ice is most likely to occur when temperatures are:

Below 70 degrees Fahrenheit (°F) and the relative humidity is above 80 percent.

Below 32 degrees Fahrenheit.

Above 105 degrees Fahrenheit (°F).

Above 21 (ºC) and the relative humidity is above 80 percent.

To determine runway braking action, consult the:

local NOTAM's MU friction value.

numerical Runway Condition Codes.

current METAR for the nearest airport.

current TAF for the nearest airport.

Want to learn more about pilot landings and landing variations? Check out Sporty’s Learn To Fly Course for more in depth training on this subject.

Tony Birth