Aviation Weather Information Flashcards
7 cards from real SPC practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Aviation Weather Information flashcards as text
When is carburetor icing most likely to form?
Answer: At temperatures between 20°F and 70°F with high humidity
Carburetor icing can form at temperatures between 20°F (-7°C) and 70°F (21°C) with relatively high humidity, even in clear air, due to adiabatic cooling in the carburetor venturi.
What does a yellow (amber) color on a Nexrad radar display typically indicate?
Answer: Moderate precipitation — exercise caution
On standard Nexrad color coding, yellow indicates moderate precipitation reflectivity (approximately 35–45 dBZ), advising pilots to use caution.
A pilot should be concerned about wake turbulence when landing behind a heavy jet. Where is the vortex hazard greatest?
Answer: Below and behind the generating aircraft, drifting with the wind
Wake vortices sink and drift downwind of the generating aircraft, posing the greatest hazard to following aircraft that are below and behind, especially during approach and landing.
What is the definition of 'ceiling' in aviation weather reporting?
Answer: The height above ground level of the lowest broken or overcast cloud layer
Ceiling is defined as the height above the earth's surface of the lowest layer of clouds reported as broken (BKN) or overcast (OVC), or a vertical visibility into an obscuration.
What weather phenomenon is associated with a temperature inversion?
Answer: Smooth air and possible restricted visibility due to trapped haze or fog
Temperature inversions trap moisture, smoke, and pollutants near the surface, often producing smooth but hazy or foggy conditions below the inversion layer.
What is the significance of the freezing level (0°C isotherm) to a VFR student pilot?
Answer: Flying at or above the freezing level in visible moisture can cause structural icing
When flying in visible moisture (clouds, rain, snow) at or above the freezing level, student pilots risk structural icing — which is prohibited without appropriate aircraft certification and rating.
What does the term 'LIFR' mean in weather reporting?
Answer: Low instrument flight rules — ceiling below 200 feet and/or visibility below 1/2 mile
LIFR (Low IFR) describes conditions with ceiling below 200 feet AGL and/or visibility less than 1/2 statute mile — the most restrictive category of instrument flight conditions.