PPL Aviation Weather Services and Meteorology Flashcards
6 cards from real PPL practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 PPL Aviation Weather Services and Meteorology flashcards as text
What hazardous weather does a SIGMET warn about?
Answer: Conditions hazardous to all aircraft such as severe turbulence, severe icing, or volcanic ash
SIGMETs are issued for meteorological conditions significant to all aircraft including severe turbulence, extreme icing, dust storms, and volcanic ash clouds.
How are Winds Aloft forecasts (FB) used in flight planning?
Answer: To plan fuel burn, flight time, and favorable cruise altitudes based on forecast winds at various levels
Winds Aloft forecasts provide predicted wind direction, speed, and temperature at various altitudes, enabling pilots to optimize route altitude for tailwinds, fuel efficiency, and flight time.
What cloud types and conditions characterize a stable atmosphere?
Answer: Stratiform (layered) clouds, smooth flight conditions, and reduced visibility in haze
A stable atmosphere resists vertical mixing, producing flat stratus clouds, steady precipitation, haze, and smooth but often instrument-weather conditions.
Why are thunderstorms particularly dangerous to light aircraft?
Answer: They generate severe turbulence, lightning, large hail, wind shear, and microbursts that can exceed aircraft structural limits
Thunderstorms can produce turbulence capable of structural failure, wind shear that overwhelms aircraft performance, large hail that destroys windshields, and lightning that disables avionics.
What does 'VFR NOT RECOMMENDED' in a weather briefing mean?
Answer: The briefer advises that conditions are not suitable for VFR flight, though the pilot retains final authority
'VFR Not Recommended' is the briefer's professional advisory opinion that conditions are hazardous for VFR flight; however, the pilot in command makes the final go/no-go decision.
What is a microburst and why is it hazardous during takeoff and landing?
Answer: An intense localized downdraft that creates dangerous wind shear with a sudden headwind followed by a severe tailwind
A microburst is a powerful downdraft that diverges outward on impact with the ground, first producing a headwind then a sudden tailwind, causing rapid and potentially unrecoverable airspeed and altitude loss.