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18 Cards in this Set
- Front
- Back
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High-altitude observation systems |
Radiosonde PIREP AMDAR (Aircraft Meteorological Data Relay) (airliners via VHF/satellite) MDCRS (Meteorological Data Collection and Reporting System) |
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Where to get weather services |
Flight Service Station (FSS, preflight, 800-WXBRIEF) Telephone Information Briefing System (TIBS, recording) Hazardous Inlight Weather Advisory Service (HIWAS, over VOR) Transcribed Weather Broadcast (TWEB, Alaska only over VOR) |
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Types of FSS briefings |
Standard briefing -- whole thing
Abbreviated briefing (include time of last briefing) Outlook briefing (6 hours or more) |
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Airmet codes
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SIERRA -- IFR and mountain obscuration TANGO -- Turbulence, strong winds, LLWS ZULU -- Icing and freezing levels |
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Winds aloft format |
Winds 200 at 10: 2010 Winds 250 at 110: 7510 Winds 300 at 210: 8099 |
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Automated weather and field reporting systems |
ATIS - Automatic Terminal Information Service (manual)
AWOS - Automated Weather Observation System (automated, old) ASOS - Automated Surface Observing System (automated, new) AFIS - Automated Flight Information Service |
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Where should a pilot look for freezing levels and icing information? |
Inflight aviation weather advisories |
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Types of weather reports and forecasts |
Area forecast (FA) Winds and temperature aloft (FB) Routine weather report (METAR) Terminal aerodrome forecast (TAF) Inflight weather advisories (WA, WS, WST) Convective outlook (AC) Pirep (UA) |
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When are winds reported true vs. magnetic? |
If you hear it, it's magnetic. (ATIS, ASOS, AWOS, controller) If you read it, it's true. (METAR, TAF, FB, etc.) |
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How do FB (winds aloft) indicate "light and variable" wind? |
9900 for less than 5 knots |
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How is a Weather Depiction chart to be used? |
To get a general sense of the overall weather |
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SIGMET contents |
Weather potentially hazardous to all aircraft Severe icing Severe or extreme turbulence Widespread sandstorms Dust storms, volcanic ash |
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Convective SIGMETs |
Embedded thunderstorms Line of thunderstorms Thunderstorms > VIP level 4 affecting 40% or more of 3,000 square miles Severe surface winds >= 50 knots Surface hail >= 3/4" diameter Tornadoes
Valid 2 hours |
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Which frequency to use to receive HIWAS from a VOR? |
Regular VOR frequency |
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The absence of visibility and sky condition from an ATIS broadcast means they are ... |
Ceiling above 5,000 feet Visibility of 5 miles or more |
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New/old TAF FROM format |
Old: 251818 New: 2518/2618 |
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How long are FAs valid? |
Typically state: Synopsis valid until CLDS/WX valid until (this is the forecast) Outlook valid until |
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What is a Significant Weather Prognostic Chart useful for? |
Understanding freezing and icing levels |
