Flashcards in Weather Deck (11):
What SM equivalent is 2400RVR?
What SM equivalent is 4000RVR?
What SM equivalent is 5000RVR?
What is Virga?
What does it mean to a pilot?
-Precipitation that is evaporating before it hits the ground
-Usually occurs where the air below the cloud is very dry and common in the western part of the country
-Virga associated with showers suggests strong downdrafts with possible moderate or greater turbulence
Can an AWOS be used as an authorized weather source for part 121 or 135 is the visibility is missing?
How far away from a thunderstorm should you fly? How high if going above?
1,000ft above for each 10 knots of wind
What is windshear?
-Sudden change in wind speed and/or direction
-Carry extra speed on final if windshear is reported
What is a microburst?
-A downdraft that may emerge from a cloud or no cloud as high as 15,000ft
-Wind intensifies for about 5 minutes after ground contact
-Can occur in families (more than one)
-Speed differences from 50-100kts
-Vertical speeds in excess of 3,000fpm
What do you do if you encounter a microburst?
1. Full power
2. Pitch up to start climbing
3. Do not change configuration
What is the SM equivalent to 1800RVR?