Airspace & Weather Flashcards
Class A Airspace Weather minimums
-Not applicable-Not applicable
Class B Airspace Weather minimums
-3sm-clear of clouds
Class C Airspace Weather minimums
-3sm-1000above, 2000horizontal, 500below
Class D Airspace Weather minimums
-3sm-1000above, 2000horizontal, 500below
Class E Airspace Weather minimums less than 10,000’
-3sm-1000above, 2000horizontal, 500below
Class G Airspace Weather minimums 1,200 or less
*day
*night
*day-1/2sm-clear of clouds
*night-1sm-clear of clouds
Class G Airspace Weather minimums more than 1,200 but less than 10,000
*Day
*night
*Day-1sm-1000above, 2000horizontal, 500below
*Night-3sm-1000above, 1sm horizontal, 1000below
Class G Airspace Weather minimums more than 1,200 and at or above 10,000
-5sm-1000above, 1sm horizontal, 1000below
A Airspace altitudes
18,000msl-FL600
B airspace altitudes
surface-10,000MSL
C airspace altitudes
usually consists of a 5 NM radius core surface area that extends from the surface up to 4,000 feet above the airport elevation, and a 10 NM radius shelf area that extends no lower than 1,200 feet up to 4,000 feet above the airport elevation.
D airspace altitude
surface to 2,500 feet above the airport elevation
E airspace altitudes
Generally, if the airspace is not Class A, Class B, Class C, or Class D, and it is controlled airspace, it is Class E airspace.
At 10,000AGL rules
airspeed unrestricted and must use mode c transponder
Flashing green
-Cleared to taxi-return for landing
Steady green
-cleared for takeoff/landing
Steady red
Stop/give way to other aircraft
Flashing red
-taxi clear of runway-airport unsafe don’t land
Flashing white
Return to starting point
Alternating red and green
Exercise extreme caution
Supp Oxygen at 12,500-14,000msl
when in this for more than 30minutes required for minimum crew
Supp Oxygen above 14,000msl
the entire flight time and entire crew must have supp oxygen
Supp Oxygen above 15,000
every occupant
airport beacon:flashing white and green
civilian land airports
airport beacon:flashing white and yellow
water airport
airport beacon:flashing white yellow and green
heliport
airport beacon:two quick white flashes alternating with a green flash
military airport
Airport lighting:-highest-medium-lowest
-7 times within 5 seconds-5-3
Class E Airspace Weather minimums more than 10,000’
-5sm-1000 above-1sm horizontal-1000 below
Types of special use airspace are
-prohibited areas:airspace which flight is prohibited-restricted areas:operations hazardous to nonparticipating aircraft.-warning areas:airspace extending from 12nm off the coast-military operation areas:vertical and lateral limits for separating certain military training from fir traffic-alert areas:to alert pilots of high volume pilot training or unusual aerial activity-controlled firing areas:shooting not a factor spotters call cease fire when aircraft are nearby
TAF stands for
Terminal aerodrome forecast
TAF reporting periods and area
4 times a day every 6hrs5sm radius from center of runway complexValid for 30hrs
FA stands for
Area Forecast
FA reporting periods and location
3 times a day every 8hrsgood for 12hrs for clouds/weather and outlook for an additional 6hrsseveral states
Winds aloft forecast every
4hrs
WA-no wind indication means
if airport is within 1500 of altitude
WA-No temp indication means
elevation is within 2500 of station
WA- 9900 means
Winds variable
WA-negative not indicated on altitudes
24000 and above
WA- 100-199knts wind indicated
subtract 50 from direction and add 100 to speed
Airmet issued for..Types.
Weather dangerous to light/limited aircraft-Sierra-ifr and mountain obstruction-Tango-moderate turbulence sustained wind surface at 30 or more and nonconvective low level windshear-Zulu-Moderate icing and freezing levels scheduled 4 times a day every 6hrs and unscheduled as neccessary valid for 6hrs
SIGMET issued for..
weather potentially dangerous to all airmen and aircraft -severe or greater turbulence-clear air turbulence-sever icing-wide spread dust or san storm-volcanic ashunscheduled but valid for 4 hrs
Convective SIGMET for..
-thunderstorms-severe or greater turbulence -severe icing-low level wind shear-tornadoes and large hail which is 3/4 or greater at surface and winds greater than 50 at the surface-heavy precipitation.issued hourly and good for 2hrs
Surface Prognostic Charts issued periods
Current and is issued 8times a day
Milibars Standard is
1013.2mb
ATIS stands for..issued periods
Automated Terminal Information System1hour
ASOS stands for..issued periods
Automated Surface Observing SystemMinute by minute
AWOS stands for..issued periods
Automated Weather Observing SystemMinute by minute
Winds flow from..
High to Low
Coriolis Force deflects air to the.. in the northern hemisphere.
right
Microburst is..
most common in thunderstorm.is a severe downdraft up to 6000fpm and most severe low level wind shear type
To form a thunderstorm needs..
-lifting action-high humidity-unstable
Cloud Categories-low-medium-high-clouds with extensive vertical developement
-stratus sfc-6500agl-alto-6500 to 20000agl-sirius-above 20000agl-towering cumulous,cumulonibus-
Avoid thunderstorms by..
20nm
Fog is..
cloud within 50ft of surface and happens when temp and dew point are rather close
FOG types:RAIS UP
-radiation-advection-ice-steam-upslope -precipitation