AS 121 EXAM 4 QUESTIONS WITH 100%
CORRECT ANSWERS LATEST VERSION
2025/2026.
What time frame does the GFA report? - ANS 14 hours in the past until 15 hours in the future
What purpose does the GFA (Graphical Forecast for Aviation) serve? - ANS Provide necessary
weather information to give users a complete picture of the weather that may affect a flight in
the continental United States (CONUS)
Which of the following is a non-convective inflight weather advisory that is considered
potentially hazardous to all aircraft? - ANS SIGMET
Which of the following are aviation forecasts depicted on the GFA? - ANS TAFs,
thunderstorms and turbulence
Weather data derived from AWOS observations will contain what prefix? - ANS AUTO
Which of the following is the AIRMET code used to denote IFR and mountain obscuration? -
ANS Sierra
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
, What weather data does an AWOS-2 system report? - ANS The information provided by an
AWOS-1 plus visibility
Which of the following is the AIRMET code used to denote strong surface winds? - ANS Tango
Which of the following is an inflight weather advisory that is considered potentially hazardous
to light aircraft? - ANS AIRMET
Which of the following would cause the issuance of a convective SIGMET? - ANS Severe
thunderstorms with surface winds greater than 50 knots
The most severe type of low-level wind shear (microburst) is associated with what kind of
weather? - ANS Convective precipitation
Why does the wind direction at the surface vary from the wind direction at 2000 feet? -
ANS Friction
What happens to barometric pressure as altitude increases? - ANS Pressure decreases
The vast majority of clouds, weather, storms and temperature variances occur within -
ANS The troposphere
The troposphere - ANS Uneven heating of the Earth's surface
Which way does air flow? - ANS From high pressure to low pressure
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
CORRECT ANSWERS LATEST VERSION
2025/2026.
What time frame does the GFA report? - ANS 14 hours in the past until 15 hours in the future
What purpose does the GFA (Graphical Forecast for Aviation) serve? - ANS Provide necessary
weather information to give users a complete picture of the weather that may affect a flight in
the continental United States (CONUS)
Which of the following is a non-convective inflight weather advisory that is considered
potentially hazardous to all aircraft? - ANS SIGMET
Which of the following are aviation forecasts depicted on the GFA? - ANS TAFs,
thunderstorms and turbulence
Weather data derived from AWOS observations will contain what prefix? - ANS AUTO
Which of the following is the AIRMET code used to denote IFR and mountain obscuration? -
ANS Sierra
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
, What weather data does an AWOS-2 system report? - ANS The information provided by an
AWOS-1 plus visibility
Which of the following is the AIRMET code used to denote strong surface winds? - ANS Tango
Which of the following is an inflight weather advisory that is considered potentially hazardous
to light aircraft? - ANS AIRMET
Which of the following would cause the issuance of a convective SIGMET? - ANS Severe
thunderstorms with surface winds greater than 50 knots
The most severe type of low-level wind shear (microburst) is associated with what kind of
weather? - ANS Convective precipitation
Why does the wind direction at the surface vary from the wind direction at 2000 feet? -
ANS Friction
What happens to barometric pressure as altitude increases? - ANS Pressure decreases
The vast majority of clouds, weather, storms and temperature variances occur within -
ANS The troposphere
The troposphere - ANS Uneven heating of the Earth's surface
Which way does air flow? - ANS From high pressure to low pressure
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
