12 EXPLAINED QUESTIONSWeather · explained practice
Part 107 weather practice questions
Practice METARs, TAFs, cloud and stability cues, visibility, wind, density altitude, and weather decisions for remote pilots.
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These are original Drone Authority questions, not active FAA test items. Use the explanation to understand why the correct choice wins and where to rebuild the concept.
01Under Part 107, what is the minimum flight visibility from the control station?
3 statute miles
Part 107 requires a minimum flight visibility of 3 statute miles from the control station.
02Part 107 cloud-clearance minimums require the small unmanned aircraft to remain how far from clouds?
500 feet below and 2,000 feet horizontally
The aircraft must stay at least 500 feet below the clouds and 2,000 feet horizontally from them.
03In a METAR, the entry '24015G25KT' tells the pilot the wind is:
From 240° true at 15 knots gusting to 25 knots
In a METAR, wind is reported as direction (degrees true) and speed in knots; the 'G' shows gusts: here 240° at 15 knots gusting 25.
04A METAR reporting 'FEW250' indicates:
Few clouds at 25,000 feet
Cloud heights in a METAR are given in hundreds of feet AGL, so 'FEW250' means few clouds at 25,000 feet.
05The phenomenon where a layer of warm air sits above cooler air, trapping haze and reducing visibility, is called:
A temperature inversion
A temperature inversion is warm air over cooler air; it commonly traps pollutants and moisture, degrading visibility.
06What is the primary hazard a thunderstorm poses to small drone operations?
Severe turbulence, strong gusts, and rapidly changing winds
Thunderstorms produce violent turbulence, strong and shifting gusts, and downdrafts that can easily overwhelm a small drone.
07A TAF is best described as:
A forecast for the area around an airport
A Terminal Aerodrome Forecast is a forecast for weather near an airport, not a current observation.
08ASOS and AWOS are useful to a remote pilot because they provide:
Automated local aviation weather observations
ASOS/AWOS stations provide automated observations such as wind, visibility, sky condition, temperature/dewpoint, and altimeter.
09A microburst is especially dangerous to a small unmanned aircraft because it creates:
Intense downdrafts and rapidly changing surface winds
Microbursts are intense downdrafts that spread outward near the surface, producing severe wind shear and gusts.
10In aviation weather, ceiling is generally the height of:
The lowest broken or overcast cloud layer
Ceiling is the lowest cloud layer reported as broken or overcast, or vertical visibility into an obscuration.
11A cold front is most likely to bring which concern for small UAS operations?
Gusty winds, turbulence, and possible thunderstorms
Cold fronts often bring abrupt weather changes, gusty winds, turbulence, precipitation, and thunderstorms.
12Which set of conditions should be treated as no-go weather for a small UAS?
Thunderstorms, lightning, hail, or icing
Thunderstorms, lightning, hail, and icing can quickly exceed the capability of a small UAS and should stop the flight.
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