u8 Flashcards
what is the AAS or VCS service given at FSS
aerodrome advisory service (or vehicle control service) is provided on the MF to tell you who is taxing on runway, who is departing/landing….
must contact control zone ____ mins before within range to request advisory information
5 mins
what is ATIS
automatic terminal information service
continuous broadcast of recorded basic information for airport to reduce frequency congestion
what is METAR and what does it tell us
actual weather conditions of aerodrome on the UTC hour occurring within 5 NM radius
METAR gives wind direction in ____ and clouds height in _____
true
AGL
what is AWOS and what does it tell us
automated weather observation station
the automatic METAR that occurs every hour
pretty accurate except for differentiating between cloud types (snow vs rain…)
what is LWIS and what does it tell us
limited weather information system
gives basic info to fly IFR (wind, temperature, altimeter setting)
only hourly reports
what are PIREP and what does it tell us and what is the code for a regular PIREP vs urgent PIREP
pilot reports
U/A = pirep
UUA = urgent pirep
what is prevailing visibility
maximum visibility that human can see in this sector in front of me
(can be different in another sector)
what is runway visual range
max horizontal distance you can see on runway
info from sensors
what is NOTAM and what does it tell us
“notice to airman”
tells us current condition/changes to aerodrome, service, procedure, hazards
max lifespan of a NOTAM is ___ days. after that, published to CFS
56 days
GFA are issued ___ times a day, _____ before the beginning of the forecast period.
4x daily
half hour before valid period
each GFA consists of ___ charts
(current, 6hrs from now, 12h from now)
6 charts
ceiling considered IFR when: ceilings and visibility are…
ceiling = less than 1000 ft AGL
AND/OR
visibility = less than 3 SM
ceiling considered MVFR when: ceilings and visibility are…
ceiling = between 1000-3000 ft AGL
AND/OR
visibility = between 3-5 SM
ceiling considered V FR when: ceilings and visibility are…
ceiling = more than 3000 ft ASL
AND
visibility = more than 5 SM
an ____ gets issued to automatically amend a GFA when the GFA is incorrect
AIRMET
SIGMET
what is a TAF and what information does it give us and how many time s a day does it get issued
terminal area forecast
airport gives weather EXPECTED within 5NM of the runway
4x daily
what are FDs and what do they tell you
forecasts of wind direction/speed and expected air temperature at specific heights ASL
what is an airmet and what does it tell you
short term advisory to tell you weather that’s not seen in the current GFA
what’s a SIGMET and what does it tell you
significant in-flight weather warming message
while in flight, SIGMET suddenly released will be broadcasted on 126.7 and you can get more information on nearest FISE frequency
upper analysis charts heights and pressure levels:
5000 ft = 850 hPa
10 000 ft = 700 hPa
18 000 ft = 500 hPa
34 000 ft = 250 hPa
the H and L markings are different on low and high surface charts. what’s the difference
low surface level charts have L&H markings as PRESSURE
high upper level charts have l&H markings as pressure HEIGHTS
