Weather & METAR — Part 107 Practice Questions

142 questions in this content area, roughly 11–16% of the exam. 22 are published in full below with worked explanations.

1. A METAR includes the group VRB04KT. What does this describe?

AWind from 040 degrees at variable speed
BA vertical visibility of 400 feet
CVisibility reduced to 4 statute miles
Wind variable in direction at 4 knots

Why D is correct

Why this is correct: The wind group "VRB04KT" decodes as: wind direction variable (VRB) at a speed of 4 knots (04KT). This is reported when the wind speed is 6 knots or less, or when direction varies widely at higher speeds. Why the other choices are wrong: "Wind from 040 degrees at variable speed" is incorrect; VRB means variable direction, not variable speed from a fixed direction. "A vertical visibility of 400 feet" is wrong; vertical visibility is reported as VV followed by a height (e.g., VV004). "Visibility reduced to 4 statute miles" is incorrect; visibility is reported as, e.g., 4SM. Exam tip: VRB in a wind group always means variable direction. The numbers before KT are the speed.

2. A METAR reports FEW030. Does this layer constrain a Part 107 flight at 350 feet AGL?

AIt cannot be determined without a reported ceiling
No, the layer is at 3,000 feet AGL, far above the flight
CYes, the layer sits at 300 feet AGL, below the flight
DYes, any few-cloud layer prohibits the operation entirely

Why B is correct

Why this is correct: The concept is that sky condition heights in a METAR are given in hundreds of feet above ground level (AGL). FEW030 means a 'few' cloud layer at 30 * 100 = 3,000 feet AGL. A flight at 350 feet AGL is well below this layer, satisfying the 500-foot cloud clearance requirement. Why the other choices are wrong: 'It cannot be determined without a reported ceiling' is wrong because the layer height is reported. 'Yes, the layer sits at 300 feet AGL, below the flight' misreads the code (it's 3,000 ft, not 300 ft). 'Yes, any few-cloud layer prohibits the operation entirely' is incorrect; a few layer does not constitute a ceiling and does not prohibit flight. Exam tip: Multiply the three-digit sky condition code by 100 to get height in feet AGL.

3. A METAR reports: KSFO 121853Z 28012G20KT 10SM FEW015 SCT035 18/12 A2992. What is the wind condition?

AFrom 280 degrees magnetic at 12 knots, gusting to 20 knots
BFrom 120 degrees at 28 knots, gusting to 20 knots
From 280 degrees true at 12 knots, gusting to 20 knots
DVariable at 12 knots with peak gusts of 28 knots

Why C is correct

Why this is correct: The wind group "28012G20KT" decodes as: wind from 280 degrees true, sustained speed 12 knots, gusting to 20 knots. Winds in METAR and TAF reports are always referenced to true north, not magnetic north. Why the other choices are wrong: "From 280 degrees magnetic at 12 knots, gusting to 20 knots" is incorrect because METAR winds are true, not magnetic. "From 120 degrees at 28 knots, gusting to 20 knots" misreads the group order. "Variable at 12 knots with peak gusts of 28 knots" is wrong; variable wind is reported as VRB, not with a three-digit direction. Exam tip: METAR wind = True north. ATIS/AWOS wind = Magnetic north. Don't mix them up.

4. A remote PIC is planning a flight at a site with an elevation of 2,000 ft MSL. The reported temperature is 95°F and the altimeter setting is 29.92. This combination of conditions is most likely to result in which of the following compared to a standard day?

A higher-than-published density altitude, decreasing propeller efficiency.
BA lower-than-published density altitude, increasing battery discharge rate.
CA density altitude equal to field elevation, having no effect on performance.
DA lower-than-published density altitude, improving motor cooling.

Why A is correct

Density altitude is pressure altitude corrected for nonstandard temperature. High temperature and a standard pressure (29.92) at an elevated field elevation combine to produce a density altitude significantly higher than the field elevation. High density altitude means less dense air, which reduces propeller efficiency and thrust, decreasing sUAS performance. This is a key concept from the FAA Remote Pilot Study Guide (FAA-G-8082-22).

5. A remote pilot calculates the density altitude for their planned flight to be 7,000 feet. The actual takeoff field elevation is 2,000 feet MSL. What does this calculation indicate about the operating environment?

The air is less dense than it would be at a standard atmosphere at 7,000 feet, and aircraft performance will be degraded.
BThe air is more dense than it would be at a standard atmosphere at 2,000 feet, and aircraft performance will be enhanced.
CThe pressure altitude is 5,000 feet higher than the field elevation.
DThe aircraft will perform as if it were physically taking off from a 2,000-foot elevation.

Why A is correct

Density altitude is the pressure altitude at which the aircraft 'feels' like it is operating. A density altitude (7,000 ft) that is significantly higher than the field elevation (2,000 ft) indicates hot conditions, low pressure, or both. This means the air is less dense than the standard atmosphere at the actual field. Consequently, the aircraft will perform as if it were at 7,000 ft in standard conditions: with degraded lift, thrust, and overall performance.

6. A remote pilot is planning a flight in a region of rolling hills. The forecast wind at the planned altitude is 20 knots from the west. When operating on the downwind (east) side of a hill, what wind condition should the pilot anticipate?

ASmooth, laminar airflow with no change in velocity.
A wind shadow with significantly reduced wind speed and possible turbulence.
CA consistent increase in wind speed proportional to the hill's height.
DA predictable updraft along the entire slope.

Why B is correct

Terrain effects on wind include the creation of a wind shadow, or lee area, on the downwind side of an obstacle. As the wind flows over the hill, it separates on the leeward side, creating an area of reduced wind speed and chaotic, turbulent airflow. This is a standard terrain-induced wind effect covered in the Remote Pilot Study Guide (FAA-G-8082-22). A remote pilot must anticipate these conditions as they can cause unexpected aircraft behavior.

7. A small temperature-dewpoint spread indicates what condition is likely?

AStrong convective turbulence
BRapidly rising barometric pressure
Fog or low clouds forming
DHigh visibility and stable conditions

Why C is correct

Why this is correct: The dewpoint is the temperature at which air becomes saturated. When the air temperature cools to the dewpoint, condensation occurs, forming fog or low clouds. A small temperature-dewpoint spread means the air is very close to saturation, making fog or low cloud formation likely. Why the other choices are wrong: 'Strong convective turbulence' is associated with large temperature differences, not a small spread. 'Rapidly rising barometric pressure' is not indicated by temperature and dewpoint. 'High visibility and stable conditions' are typically associated with a large temperature-dewpoint spread (dry air). Exam tip: Small temp-dewpoint spread = high humidity and risk of fog. Large spread = dry, clear conditions.

8. A TAF valid period is written 1212/1318. What does this mean?

AValid on the 12th between 1200 and 1318 local
BValid from 1212Z to 1318Z on the same day
Valid from the 12th at 1200Z to the 13th at 1800Z
DValid for 12 hours starting at 1218Z

Why C is correct

Why this is correct: In a TAF valid period, the format is DDhh/DDhh, where the first two digits are the day of the month and the next two are the hour in UTC. 1212/1318 means from the 12th at 1200Z to the 13th at 1800Z. Why the other choices are wrong: Valid on the 12th between 1200 and 1318 local incorrectly uses local time and assumes same day. Valid from 1212Z to 1318Z on the same day is wrong because 1318Z would be on the 13th, not the 12th. Valid for 12 hours starting at 1218Z misreads the format. Exam tip: TAF valid period: DDhh/DDhh = DayHourZ to DayHourZ (UTC).

9. Does the Part 107 cloud clearance requirement apply to a scattered layer, or only to a ceiling?

It applies to any cloud, including scattered layers
BIt applies only above 200 feet AGL
CIt applies only in controlled airspace
DIt applies only to broken or overcast layers

Why A is correct

Why this is correct: 14 CFR 107.51(d) requires minimum distances from any cloud. The rule does not differentiate based on cloud coverage (e.g., scattered, broken, overcast). Therefore, the 500-foot below and 2,000-foot horizontal clearance applies to a scattered layer just as it does to a broken or overcast layer. Why the other choices are wrong: 'It applies only above 200 feet AGL' has no basis in the regulation. 'It applies only in controlled airspace' is false; Part 107 weather minimums apply in all airspace unless a waiver is obtained. 'It applies only to broken or overcast layers' contradicts the rule, which applies to 'any cloud'. Exam tip: Cloud clearance applies to ALL clouds, regardless of how much sky they cover.

10. How does a stable atmosphere affect visibility near the surface?

It tends to trap haze and pollutants, reducing visibility
BIt always improves visibility by suppressing cloud formation
CIt has no effect on visibility
DIt increases visibility by dispersing moisture vertically

Why A is correct

Why this is correct: Stable air suppresses vertical mixing, trapping haze, smoke, and pollutants in a shallow layer near the surface, which reduces visibility. Why the other choices are wrong: It does not always improve visibility by suppressing cloud formation; stable conditions often lead to poor visibility from trapped pollutants. It has a significant effect on visibility, contrary to the claim of no effect. It decreases visibility by trapping moisture and pollutants, not increasing it by dispersing moisture vertically. Exam tip: Stable air near the surface = trapped pollutants/haze = reduced visibility.

11. How should a remote pilot treat a METAR from a station 25 miles away when planning an operation?

AAs legally binding for the operation's visibility determination
Use it for planning, then verify actual conditions at the site
CAs a forecast for the next six hours
DAs irrelevant because it is not from the operating site

Why B is correct

Why this is correct: The governing concept is that a METAR is a point observation. Conditions can vary significantly over 25 miles due to local terrain, fog, or showers. Therefore, it is used for planning, but the remote pilot must verify the actual conditions at the flight location, as required by Part 107 Why the other choices are wrong: 'As legally binding for the operation's visibility determination' is incorrect because the legal standard is observed from the control station, not a distant airport. 'As a forecast for the next six hours' confuses a METAR (current observation) with a TAF (forecast). 'As irrelevant because it is not from the operating site' is wrong; it provides valuable regional weather information for planning. Exam tip: Use METARs for planning, but the final go/no-go decision is based on conditions at your control station.

12. In a TAF, the change group 'TEMPO 2324 2SM -RA BKN008 OVC015' indicates the described conditions will occur for what maximum period of time?

ALess than 1 hour in total during the period between 2300Z and 2400Z.
BContinuously from 2300Z to 2400Z.
For one hour or less at a time, and in total for less than half of the period between 2300Z and 2400Z.
DFor the entire period from 2300Z to 2400Z.

Why C is correct

Correct. The 'TEMPO' (TEMPORARY) group is used for fluctuations in conditions that are expected to last for less than one hour in each instance and, in the aggregate, cover less than half of the forecast period. The period '2324' is a one-hour block from 2300Z to 2400Z. Therefore, the forecast conditions (2SM visibility, light rain, ceiling 800 feet broken) are expected to occur for periods of one hour or less at a time, and for less than 30 minutes total during that one-hour window.

13. In a TAF, the group 'TEMPO 1418 2SM BR' indicates:

ATwo full hours of forecast improvement beginning at 1400Z
BA permanent change to 2 miles visibility at 1418Z
Temporary 2-SM visibility in mist from 1400Z to 1800Z
DThe temperature will reach 14 to 18 degrees

Why C is correct

Why this is correct: In a TAF, 'TEMPO 1418 2SM BR' indicates temporary conditions of 2 statute miles visibility in mist expected to occur for less than an hour at a time between 1400Z and 1800Z. Why the other choices are wrong: 'Two full hours of forecast improvement beginning at 1400Z' misinterprets TEMPO as a sustained change. 'A permanent change to 2 miles visibility at 1418Z' incorrectly treats TEMPO as a permanent change. 'The temperature will reach 14 to 18 degrees' confuses the group with a temperature range. Exam tip: TEMPO means temporary fluctuations within the specified time window, not a permanent change.

14. Pressure altitude is 2,000 feet and the temperature is 30 degrees Celsius. Compared with standard conditions, what happens to density altitude?

AIt equals 2,000 feet because pressure altitude already accounts for temperature
BIt is lower than 2,000 feet because warm air is denser
It is higher than 2,000 feet because the air is warmer than standard
DIt cannot be determined without the dewpoint

Why C is correct

Why this is correct: Standard temperature decreases with altitude. At a pressure altitude of 2,000 feet, the actual temperature (30 degrees C) is significantly warmer than the standard temperature for that altitude. Warmer air is less dense. Therefore, the density altitude, which is the pressure altitude corrected for non-standard temperature, will be higher than the 2,000-foot pressure altitude. Why the other choices are wrong: "It equals 2,000 feet because pressure altitude already accounts for temperature" is false; pressure altitude is based on barometric pressure setting, not temperature. "It is lower than 2,000 feet because warm air is denser" is backwards; warm air is less dense. "It cannot be determined without the dewpoint" is incorrect; the large temperature deviation from standard is sufficient to know density altitude is higher, though humidity can have a secondary effect. Exam tip: Compare actual temperature to standard. If actual is warmer, density altitude is higher than pressure altitude.

15. Radiation fog most commonly forms under which conditions?

AStrong wind blowing warm air over a cold surface
BRain falling through cold air beneath a warm front
CAir being forced up a mountain slope
Clear skies, light wind, moist surface and a cool night

Why D is correct

Why this is correct: Radiation fog forms through radiational cooling of the ground on clear nights. The ground loses heat, cooling the moist air directly above it to its dew point, causing condensation. Light wind (1-5 knots) gently mixes this cooling through a shallow layer, allowing fog to form. Strong wind would mix drier air from aloft and prevent saturation. Why the other choices are wrong: 'Strong wind blowing warm air over a cold surface' describes advection fog, not radiation fog. 'Rain falling through cold air beneath a warm front' describes frontal or precipitation fog. 'Air being forced up a mountain slope' describes upslope fog. Exam tip: Remember the four ingredients for radiation fog: clear skies, light wind, moist surface, and a cool night. It's a common early-morning hazard.

16. What are the Part 107 minimum flight visibility and cloud clearance requirements?

A1 statute mile visibility and clear of clouds
3 statute miles visibility, 500 feet below and 2,000 feet horizontally from clouds
C3 nautical miles visibility and 500 feet in any direction from clouds
D5 statute miles visibility, 1,000 feet below and 1 statute mile horizontally

Why B is correct

Why this is correct: 14 CFR 107.51 sets the standard weather minimums for Part 107 operations: minimum flight visibility of 3 statute miles and cloud clearance of no less than 500 feet below and 2,000 feet horizontally from any cloud. Why the other choices are wrong: '1 statute mile visibility and clear of clouds' is for certain manned aircraft operations, not Part 107. '3 nautical miles visibility and 500 feet in any direction from clouds' uses the wrong unit (nautical miles) and an incorrect horizontal distance. '5 statute miles visibility, 1,000 feet below and 1 statute mile horizontally' describes different, more restrictive values not found in Part 107. Exam tip: Memorize the triplet: 3 statute miles visibility, 500 feet below clouds, 2,000 feet horizontal.

17. What characteristic is most indicative of stable atmospheric conditions, which could lead to reduced visibility for a sUAS operator?

ARapid vertical motion and good surface visibility
BA steep environmental lapse rate
Resistance to vertical motion and a tendency for layered clouds
DTurbulent air and rapidly building cumulus clouds

Why C is correct

Stable air resists vertical motion. When forced to rise, it tends to return to its original level. This stability favors the formation of stratiform or layered clouds (like stratus) and can lead to persistent areas of fog or haze, reducing visibility. Options A, B, and D all describe characteristics of unstable air.

18. What is a ceiling, as the term is used in aviation weather reports?

AThe Part 107 400-foot altitude limit
The lowest broken or overcast layer, or vertical visibility into obscuration
CThe top of the highest cloud layer
DThe maximum altitude at which an aircraft can maintain level flight

Why B is correct

Why this is correct: In aviation weather, a 'ceiling' is legally defined as the height above ground level (AGL) of the lowest layer of clouds reported as broken or overcast, or the vertical visibility into a surface-based obscuration like fog. Why the other choices are wrong: The Part 107 400-foot altitude limit is a regulatory maximum, not a weather ceiling. The top of the highest cloud layer is the cloud tops, not the ceiling. The maximum altitude at which an aircraft can maintain level flight is the aircraft's service ceiling, a performance metric. Exam tip: For weather purposes, only 'broken' (5/8 to 7/8 coverage) or 'overcast' (8/8) layers count as a ceiling. 'Scattered' clouds do not.

19. What is the operational meaning of the sky condition code SKC or CLR in a METAR?

No clouds detected, so cloud clearance does not apply
BClouds are present but their height was not measured
CThe station is not equipped to report sky condition
DScattered cloud exists at an unspecified altitude

Why A is correct

Why this is correct: SKC (sky clear) reported by a human observer or CLR (clear) reported by an automated station means no clouds are detected below 12,000 feet. Therefore, there is no cloud layer to maintain distance from, so the cloud clearance requirement of Part 107.51 does not apply (only visibility and the 400-foot ceiling above structures remain). Why the other choices are wrong: "Clouds are present but their height was not measured" is false; SKC/CLR means none were detected. "The station is not equipped to report sky condition" is incorrect; they are reporting a condition of no clouds. "Scattered cloud exists at an unspecified altitude" is wrong; that would be reported as SCT. Exam tip: SKC or CLR = No clouds below 12,000 ft. Cloud clearance rules are not a factor.

20. What type of clouds is associated with stable air?

ALenticular clouds forming over mountain ridges
BCumuliform clouds with showers and turbulence
CCumulonimbus bringing hail and lightning
Stratiform clouds with steady precipitation

Why D is correct

Why this is correct: Stable air resists vertical motion, so lifting produces widespread, layered stratiform clouds and steady precipitation, with smooth flight conditions and often poorer visibility. Why the other choices are wrong: 'Lenticular clouds forming over mountain ridges' are associated with stable, stratified airflow, but the question asks for the cloud type most broadly and directly associated with stable air, which is stratiform. 'Cumuliform clouds with showers and turbulence' are products of unstable air. 'Cumulonimbus bringing hail and lightning' are extreme manifestations of instability. Exam tip: Stable air = stratiform clouds, steady rain, smooth air, poor visibility.

21. Why does Part 107 set a visibility minimum at all, given that the aircraft must remain within visual line of sight?

AThe visibility minimum applies to night operations only
BVisibility determines which registration category applies
The pilot must also see and avoid approaching aircraft
DVisibility governs the quality of the camera imagery

Why C is correct

Why this is correct: The visual line-of-sight (VLOS) rule ensures the remote pilot can see the drone. The separate flight visibility minimum ensures the pilot can see far enough into the surrounding airspace to detect and avoid other aircraft, as required by the right-of-way rules in 107.37. Why the other choices are wrong: 'The visibility minimum applies to night operations only' is false; it applies at all times. 'Visibility determines which registration category applies' is unrelated to Part 107 operational rules. 'Visibility governs the quality of the camera imagery' is not the regulatory purpose. Exam tip: Think of it this way: VLOS is for controlling your drone; flight visibility is for seeing other aircraft.

22. Wind shear is best described as what?

AA steady increase in wind speed with altitude
BWind blowing consistently from one direction for several hours
CThe difference between true and magnetic wind direction
A sudden change in wind speed or direction over a short distance

Why D is correct

Why this is correct: Wind shear is defined as a sudden, sharp change in wind speed or direction over a short distance, either vertically or horizontally. This can cause rapid and unexpected changes in aircraft performance. Why the other choices are wrong: A 'steady increase in wind speed with altitude' describes a wind gradient, not shear. 'Wind blowing consistently from one direction for several hours' describes steady wind, not shear. The 'difference between true and magnetic wind direction' is a navigational concept, not a definition of wind shear. Exam tip: Think 'sudden change' for wind shear. It's a hazard because it happens quickly.

120 more Weather questions

Answers and explanations for these are in the study app.

A crew is set up on the windward slope of a long escarpment with a steady moist breeze blowing up the hillside. Fog begins forming despite gusty conditions that would normally prevent it. What type is this most likely to be?
A frontal passage is forecast during a planned operating window. What should the remote pilot anticipate?
A job requires the same aircraft configuration at three sites: sea level at 10 degrees, 3,000 feet at 25 degrees, and 7,000 feet at 30 degrees. Where should the remote pilot expect the shortest endurance?
A layer reported as OVC008 at the operating site means a Part 107 flight to 400 feet AGL:
A METAR begins KDEN 041656Z. What does 041656Z indicate?
A METAR contains the group BKN008. What does this tell a remote pilot planning a 300-foot AGL flight?
A METAR includes the group 09015KT 6SM -RA BKN012. What is the weather condition?
A METAR reporting '10SM' indicates:
A METAR reporting '12/09' means the temperature and dew point are:
A METAR reports 10SM OVC004. What is the operational consequence for a Part 107 flight?
A METAR reports 1/2SM FG. What is the significance for a planned Part 107 operation?
A METAR reports M03/M07. What are the temperature and dewpoint?
A microburst is dangerous to aircraft primarily because it produces:
A microburst poses what specific danger to a small unmanned aircraft on approach to landing?
A remote pilot arrives at a river valley site at dawn after a clear, calm night. What condition is most likely?
A remote pilot can see the aircraft clearly at 800 feet away, but haze limits visibility of the surrounding sky to about 2 miles. Can the operation continue?
A remote pilot checks the current METAR and finds visibility of 2 statute miles. Under Part 107 the operation:
A remote pilot is asked to inspect the leeward side of a large warehouse in a 15-knot wind. What hazard should be anticipated?
A remote pilot is inspecting the windward face of a tall building in a 12-knot wind. What should be anticipated close to the wall?
A remote pilot is planning an operation from a mountain pass with a field elevation of 8,500 ft. The forecast for the day is clear skies with a high temperature of 85°F. Which of the following performance considerations is most critical?
A remote pilot is preparing for a flight in an area where a line of thunderstorms passed through two hours ago. The current weather is clear, but gusts are still being reported. Regarding wind conditions post-thunderstorm, what is generally true?
A remote pilot launches in calm surface conditions and finds the aircraft drifting rapidly at 300 feet AGL. What is the most likely cause?
A remote pilot notices the aircraft requires noticeably more throttle to hover than it did the previous week at the same site. Temperature has risen 15 degrees Celsius. What is the explanation?
A remote pilot operates from a mountain site at 7,000 feet elevation on an unusually hot afternoon. What effect should be expected?
A remote pilot planning a canyon-rim flight should anticipate what terrain-induced wind effect?
A remote pilot planning a morning flight checks the METAR and notes the temperature is 41°F and the dew point is 39°F under clear skies. As sunrise approaches, what is the most significant aviation weather concern?
A remote pilot reads KAPA 141553Z 33008KT 10SM CLR 21/M01 A3012. Are Part 107 weather minimums met?
A remote pilot successfully flew a heavy payload mission at a coastal site in winter. The same aircraft and payload struggle to climb at a desert site in summer. What is the most likely explanation?
A surface temperature inversion is most likely to produce which condition affecting a low-altitude operation?
A TAF contains the group: BECMG 1517 5SM BR. What does this forecast?
A TAF contains the group TEMPO 1418/1422 4SM SHRA. How should a remote pilot interpret it?
A TAF differs from a METAR in that a TAF is:
A TAF forecasts 3SM BR for the planned operating window. What should the remote pilot conclude?
A TAF includes PROB30 2002/2006 TSRA. What does this convey?
A TAF includes the line: PROB30 1012 1SM +TSRA BKN008CB. What is the meaning of 'PROB30'?
A TAF shows FM1500 3SM BR OVC005 for the afternoon. A flight is planned at 1600Z. What should the remote pilot conclude?
Advection fog forms under what conditions?
Advection fog forms when:
An aircraft climbing out of a sheltered launch site encounters an abrupt change in wind between two layers. This wind shear is:
An unstable atmosphere is characterized by:
Ceiling is reported at 1,200 feet AGL and visibility is 3 statute miles. What is the maximum legal Part 107 altitude?
Cloud clearance requirements under Part 107 apply:
Conditions are reported as 5 statute miles visibility with a scattered layer at 1,000 feet AGL and a broken layer at 2,500 feet AGL. What is the highest legal Part 107 altitude?
Conditions at the site are 4 statute miles visibility with an overcast layer at 700 feet AGL. What is the highest altitude at which a Part 107 flight can legally be conducted?
Density altitude increases when:
Do the Part 107 weather minimums change at night?
During a 5-hour Part 107 flight operation, the remote pilot receives a forecast update indicating conditions are now favorable for the formation of microbursts. What is the most significant immediate hazard a microburst presents to a small UA?
During a flight visibility deteriorates below 3 statute miles. What must the remote pilot do?
During a preflight check, you note the outside air temperature at the takeoff site is well above standard. What effect will this have on your small UA's performance?
Field elevation is 5,000 feet, the altimeter setting is 29.92 and the temperature is 25 degrees Celsius. Is density altitude above or below 5,000 feet, and why?
Flying a small unmanned aircraft on the downwind side of a large building can produce:
For a given pressure altitude, which meteorological condition would result in the lowest density altitude?
For a Part 107 operation, you must be able to see the unmanned aircraft sufficiently to know its location, orientation, altitude, and attitude. This requirement is primarily to ensure you can:
From what location is the 3 statute mile flight visibility requirement evaluated?
How does a TAF differ from a METAR?
How does the 2,000-foot horizontal cloud clearance requirement affect an operation near a building-height cloud base?
How far below the clouds must a small unmanned aircraft remain?
How frequently are TAFs normally issued?
How is pressure altitude determined?
How is visibility expressed in a United States METAR?
In a METAR, the group '18015G25KT' reports wind:
In a METAR, what unit is used for wind speed?
In a TAF, what does the change indicator FM signify?
In the METAR group 18/12, what do the two numbers represent?
In the METAR group 'BKN025', the cloud layer is:
On a hot summer afternoon at a high-elevation site, a multirotor will typically:
On which day should a remote pilot expect the best aircraft performance at a given site?
Radiation fog typically forms:
Standard temperature and pressure at sea level are which values?
Steam fog forms over what surface?
The nearest reporting station is 20 miles away and reports 4 statute miles visibility. Fog is visibly forming at the operating site. What governs the decision?
The standard temperature lapse rate in the troposphere is approximately what value?
Two sites have identical field elevations. Site A reports 29.60 inches of mercury and site B reports 30.20. Which has the higher density altitude, all else equal?
Visibility is exactly 3 statute miles and a broken layer sits at 900 feet AGL. What operating band is legally available?
What characterizes an unstable atmosphere?
What cloud coverage and ceiling are forecast by the following TAF change group: FM0200 22015G25KT 5SM -SHRA OVC008?
What does a rapidly narrowing temperature-dewpoint spread across successive METARs suggest to a remote pilot mid-operation?
What does a TAF group reading 25015G25KT convey about operating conditions?
What does a temperature and dewpoint that are equal indicate?
What does BECMG indicate in a TAF?
What does the code AUTO in a METAR indicate?
What does the code SPECI at the start of a report indicate?
What does the group A3005 mean in a METAR?
What does the letter Z at the end of a METAR date-time group indicate?
What does the presence of ragged, fast-moving low clouds beneath a thunderstorm base indicate?
What does the remark RMK AO2 at the end of a METAR indicate?
What does the TAF abbreviation TS represent?
What is density altitude?
What is the greatest hazard a thunderstorm presents to a small unmanned aircraft operating several miles away from the visible cell?
What is the minimum flight visibility required for a Part 107 operation?
What is the practical difference between mist and fog in a METAR for a remote pilot?
What is the primary hazard of operating in the lee of a tree line during moderate wind?
What is the safest response to an approaching thunderstorm during an operation?
What practical adjustment should a remote pilot make when density altitude is high?
What should a remote pilot do when sustained wind approaches the aircraft's published limit?
What visible sign indicates the atmosphere is unstable enough to produce turbulence at low altitude?
What weather hazard should a remote pilot associate with a rapidly approaching line of dark clouds and a sudden temperature drop?
When evaluating takeoff performance for a fixed-wing sUAS, a high density altitude primarily affects which phase of flight?
Where can a remote pilot obtain an official weather briefing for a planned operation?
Where does a remote pilot find the aviation weather products needed for a preflight assessment?
Where does wind shear commonly occur that would affect a low-altitude operation?
Where relative to a ridge line should a remote pilot expect the strongest downdrafts?
Which cloud type indicates rising air and possible turbulence at low altitude?
Which combination produces the highest density altitude at a given field elevation?
Which condition increases air density?
Which condition indicates the atmosphere is becoming more unstable?
Which forecast product would a remote pilot use to anticipate conditions six hours ahead at a specific airport?
Which METAR element would most directly cause a remote pilot to cancel a planned operation?
Which METAR sky condition constitutes a ceiling?
Which METAR sky cover abbreviation indicates a ceiling exists?
Which of these has the smallest effect on density altitude?
Which thunderstorm stage is characterized by the presence of both updrafts and downdrafts, and produces the most violent conditions?
While reviewing a weather forecast for a planned UAS operation at dawn, you note the predicted temperature is 58°F and the predicted dew point is 55°F. Under clear skies and calm winds, which condition is most likely to develop?
Why does a remote pilot at a sea-level site on a cold morning have more performance margin than the published figures suggest?
Why is a gusty crosswind particularly demanding during the landing phase of a small unmanned aircraft flight?
Why is a TAF more useful than a METAR when deciding whether to accept a job scheduled for the following afternoon?
Why might a remote pilot consult both a TAF and an area forecast product?
Within what radius of the airport does a TAF forecast conditions?
You are planning to conduct a Part 107 operation. The latest METAR for the area reports visibility as '1 1/2SM' and a ceiling at 1,400 feet. Which statement is correct regarding these conditions for a standard Part 107 flight?
You receive a weather briefing for your planned operation area. The Automated Surface Observing System (ASOS) reports the visibility as 4 statute miles. The lowest broken cloud layer is at 1,100 feet AGL, and there is an overcast layer at 1,800 feet AGL. According to Part 107.51, what is the maximum altitude you could legally fly your small unmanned aircraft?

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