Unit 8

Question 1

National Weather Service (NWS)

Answer 1

provides weather data, forecasts, warnings

Question 2

Flight Service Stations (FSSs)

Answer 2

FAA facilities that provide preflight & in-flight briefings, weather broadcasts, support…

Question 3

What should you do if you are already in flight and you need weather info?

Answer 3

Request an in flight weather briefing –> contact using frequency 122.0 MHz

Question 4

Standard briefing

Answer 4

all necessary info for safe flight

Question 5

Outlook briefing

Answer 5

when departure time is +6h from time of briefing

Question 6

Abbreviated briefing

Answer 6

change briefing (update)

Question 7

In-flight briefing

Answer 7

updates on weather conditions affecting your flight

Question 8

Aviation routine weather report (METAR)

Answer 8

primary report used to observe local, immediate weather conditions at a specific airport

Question 9

Aircraft Reports (AIREPs)

Answer 9

aircraft observation → reported to ground station

Question 10

Pilot Reports (PIREPs)

Answer 10

primary type of aircraft observation & vital tool for understanding weather

Question 11

Terminal aerodrome forecast (TAF)

Answer 11

expected weather at specific airport during 24h - 30h period

Covers an area of 5SM (radius) & reported 4x/day

Question 12

Winds & temp aloft forecasts (FB)

Answer 12

computer-prepared forecasts of wind direction, wind speed, and temperature at specific times/altitude/locations

Question 13

Flight Service Stations (FSS)

Answer 13

provide en route aircraft with current weather along the route → 122.2 MHz or frequency listed on aeronautical chart

Question 14

Convective SIGMETs (WST)

Answer 14

implies severe turbulence, severe icing, and low-level wind shear

Question 15

SIGMETs

Answer 15

severe icing not associated with thunderstorms

Question 16

AIRMETs (WA)

Answer 16

advisories of significant weather phenomena (but less intensive than SIGMETs)

Question 17

The distance measured in millibars separating isobars on surface analysis charts is typically

Answer 17

4 mb

Question 18

What is indicated when a current CONVECTIVE SIGMET forecasts thunderstorms?

Answer 18

Thunderstorms obscured by massive cloud layers.

Question 19

What information is contained in a CONVECTIVE SIGMET?

Answer 19

Tornadoes, embedded thunderstorms, and hail 3/4 inch or greater in diameter.