Remote Pilot – Chapter 3

Question 1 of 66

1. Question

Which of the following considerations is most relevant to a remote PIC when evaluating unmanned aircraft performance?

Current weather conditions.
The number of available ground crew.
The type of sUAS operation.

Question 2 of 66

2. Question

Every physical process of weather is accompanied by, or is the result of, a

movement of air.
pressure differential.
heat exchange.

Question 3 of 66

3. Question

What causes variations in altimeter settings between weather reporting points?

Unequal heating of the Earth's surface.
Variation of terrain elevation.
Coriolis force.

Question 4 of 66

4. Question

The development of thermals depends upon

a counterclockwise circulation of air.
temperature inversions.
solar heating.

Question 5 of 66

5. Question

While operating around buildings, the remote PIC should be aware of the creation of wind gusts that

change rapidly in direction and speed causing turbulence.
enhance stability and imagery.
increase performance of the aircraft

Question 6 of 66

6. Question

A strong steady wind exists out of the north. You need to photograph an area to the south of your location. You are located in an open field with no
obstructions. Which of the following is not a concern during this operation?

Strong wind conditions may consume more battery power at a faster rate than in calm conditions.
Turbulent conditions will likely be a significant factor during the operation.
Strong wind may exceed the performance of the sUAS making it impossible to recover.

Question 7 of 66

7. Question

Wind shear can exist

at all altitudes.
at low altitudes.
at high altitudes.

Question 8 of 66

8. Question

One of the most easily recognized discontinuities across a front is

a change in temperature.
an increase in cloud coverage.
an increase in relative humidity.

Question 9 of 66

9. Question

One weather phenomenon which will always occur when flying across a front is a change in the

wind direction.
type pf precipitation.
stability of the air mass.

Question 10 of 66

10. Question

Which type of weather phenomenon that may concern a remote pilot is common among cold fronts?

Long-term periods of reduced visibility.
Long periods of steady precipitation.
Thunderstorms and heavy rain.

Question 11 of 66

11. Question

What weather provides the best flying conditions?

Warm, moist air.
Cool, dry air.
Turbulence.

Question 12 of 66

12. Question

The zone between different temperature, humid ity, and wind is called

A front.
An air mass.
Wind shear.

Question 13 of 66

13. Question

A stable air mass is most likely to have which characteristic?

Showery precipitation.
Turbulent air.
Poor surface visibility.

Question 14 of 66

14. Question

What are characteristics of a moist, unstable air mass?

Turbulence and showery precipitation.
Poor visibility and smooth air.
Haze and smoke.

Question 15 of 66

15. Question

What are characteristics of stable air?

Good visibility and steady precipitation.
Poor visibility and steady precipitation.
Poor visibility and intermittent precipitation.

Question 16 of 66

16. Question

Refer to figure 20 below. Over which area should a Remote Pilot expect to find the highest amount of thermal currents under normal conditions?

2
7
5

Question 17 of 66

17. Question

Clouds, fog, or dew will always form when

water vapor condenses.
water vapor is present.
relative humidity reaches 100 percent.

Question 18 of 66

18. Question

What measurement can be used to determine the stability of the atmosphere?

Atmospheric pressure.
Actual lapse rate.
Surface temperature.

Question 19 of 66

19. Question

What would decrease the stability of an air mass?

Warming from below.
Cooling from below.
Decrease in water vapor.

Question 20 of 66

20. Question

Upon your preflight evaluation of weather, the forecasts you reference state there is an unstable air mass approaching your location. Which would not be a concern for your impending operation?

Thunderstorms.
Stratiform clouds.
Turbulent conditions.

Question 21 of 66

21. Question

You have received an outlook briefing from flight service through 1800wxbrief.com. The briefing indicates you can expect a low-level temperature inversion with high relative humidity. What weather conditions would you expect?

Smooth air, poor visibility, fog, haze, or low clouds.
Light wind shear, poor visibility, haze, and light rain.
Turbulent air, poor visibility, fog, low stratus type clouds, and showery precipitation.

Question 22 of 66

22. Question

What minimum visibility is required for sUAS operations?

1 mile.
3 miles.
4 miles.

Question 23 of 66

23. Question

The minimum distance from clouds required for sUAS Part 107 operations is

clear of clouds.
500 feet below, 2,000 feet horizontally.
500 feet above, 1,000 feet horizontally.

Question 24 of 66

24. Question

Refer to figure 69 below. You are inspecting the lighted towers approximately 8 NM SW of the Corpus Christi Intl airport (CRP) . What is the lowest cloud cover that will enable you to inspect the top of the tower?

1,104 feet MSL.
1,604 feet MSL.
1,054 feet MSL.

Question 25 of 66

25. Question

The weather report lists the ceiling at 800 feet. What is the highest you can operate your sUAS?

200 feet AGL.
800 feet AGL.
300 feet AGL.

Question 26 of 66

26. Question

Refer to figure 23 below. What are the VFR minimum visibility requirements over Plantation Airport?

1 SM.
5 SM.
3 SM.

Question 27 of 66

27. Question

Refer to figure 78 below. What is the minimum base of the cloud layer to fly to the top of the towers 4 NM east of Onawa (K36)?

792 feet AGL.
292 feet AGL.
1,335 feet MSL.

Question 28 of 66

28. Question

Which statement is true concerning ASOS/AWOS weather reporting systems?

Each AWOS station is part of a nationwide network of weather reporting stations.
ASOS locations perform weather observing functions necessary to generate METAR reports.
Both ASOS and AWOS have the capability of reporting density altitude, as long as it exceeds the airport elevation by more than 1,000 feet.

Question 29 of 66

29. Question

Refer to figure 12 below. The wind direction and velocity at KJFK is from:

180° true at 4 knots.
180° magnetic at 4 knots.
040° true at 18 knots

Question 30 of 66

30. Question

Refer to figure 12 below. What are the current conditions for Chicago Midway Airport (KMDW)?

Sky 700 feet overcast, visibility 1-1/2 SM, rain.
Sky 7,000 feet overcast, visibility 1-1/2 SM, heavy rain.
Sky 700 feet overcast, visibility occasionally 2 SM, with rain.

Question 31 of 66

31. Question

Refer to figure 15 below. In the TAF for KMEM, what does “SHRA” stand for?

Rain showers.
A shift in wind direction is expected.
A significant change in precipitation is possible.

Question 32 of 66

32. Question

Refer to figure 15 below. Between 10002 and 12002 the visibility at KMEM is forecast to be

1/2 statute mile.
3 statute miles.
6 statute miles.

Question 33 of 66

33. Question

Refer to figure 15 below. What is the forecast wind for KMEM from 16002 until the end of the forecast?

No significant wind.
Variable in direction at 4 knots.
Variable in direction at 6 knots.

Question 34 of 66

34. Question

Refer to figure 15 below. According to the KMEM forecast, what is the earliest time on the 12th (today) at which the visibility may be reduced below the 3 SM minimum for sUAS operations?

17202.
22002.
20002

Question 35 of 66

35. Question

What will a convective SIGMET be issued for?

Squall line thunderstorms.
Visibility less than 3 miles.
Surface winds greater than 40 knots.

Question 36 of 66

36. Question

Refer to figure 12 below. The remarks section for KMDW has “RAB35 ” listed. This entry means

blowing mist has reduced the visibility to 1-1/2 SM.
rain began at 18352.
the barometer has risen .35" Hg.

Question 37 of 66

37. Question

What feature is normally associated with the cumulus stage of a thunderstorm?

Roll cloud.
Continuous updraft.
Frequent lightning.

Question 38 of 66

38. Question

Which weather phenomenon signals the beginning of the mature stage of a thunderstorm?

The appearance of an anvil top.
Precipitation beginning to fall.
Maximum growth rate of the clouds.

Question 39 of 66

39. Question

What conditions are necessary for the formation of thunderstorms?

High humidity, lifting force, and unstable conditions.
High humidity, high temperature, and cumulus clouds.
Lifting force, moist air, and extensive cloud cover.

Question 40 of 66

40. Question

During the life cycle of a thunderstorm, which stage is characterized predominately by downdrafts?

Cumulus.
Dissipating.
Mature.

Question 41 of 66

41. Question

Thunderstorms reach their greatest intensity during the

mature stage.
downdraft stage.
cumulus stage.

Question 42 of 66

42. Question

Thunderstorms which generally produce the most intense hazard to aircraft are

squall line thunderstorms.
steady-state thunderstorms.
warm front thunderstorms.

Question 43 of 66

43. Question

A nonfrontal, narrow band of active thunderstorms that often develop ahead of a cold front is known as a

prefrontal system.
squall line.
dry line

Question 44 of 66

44. Question

If there is thunderstorm activity in the vicinity of an airport at which you plan to land, which hazardous atmospheric phenomenon might be expected during recovery/landing of the sUAS?

Precipitation static.
Wind-shear turbulence.
Steady rain.

Question 45 of 66

45. Question

Which weather phenomenon is always associated with a thunderstorm?

Lightning.
Heavy rain.
Hail.

Question 46 of 66

46. Question

Which is considered to be the most hazardous condition when flying an sUAS in the vicinity of thunderstorms?

Static electricity.
Lightning.
Wind shear and turbulence.

Question 47 of 66

47. Question

What is the expected duration of an individual microburst?

Two minutes with maximum winds lasting approximately 1 minute.
One microburst may continue for as long as 2 to 4 hours.
Seldom longer than 15 minutes from the time the burst strikes the ground until dissipation.

Question 48 of 66

48. Question

In what stage are thunderstorms the strongest?

Mature.
Dissipating.
Cumulus.

Question 49 of 66

49. Question

Where are squalls most likely to form?

High altitude.
Low altitude.
At any altitude.

Question 50 of 66

50. Question

The presence of ice pellets at the surface is evidenced that there

are thunderstorms in the area.
has been cold frontal passage.
is a temperature inversion with freezing rain at a higher altitude.

Question 51 of 66

51. Question

One in-flight condition necessary for structural icing to form is

small temperature/dewpoint spread.
stratiform clouds.
visible moisture.

Question 52 of 66

52. Question

In which environment is aircraft structural ice most likely to have the highest accumulation rate?

Cumulus clouds with below freezing temperatures.
Freezing drizzle.
Freezing rain.

Question 53 of 66

53. Question

What situation is most conducive to the formation of radiation fog?

Warm, moist air over low, flatland areas on clear, calm nights.
Moist, tropical air moving over cold, offshore water.
The movement of cold air over much warmer water.

Question 54 of 66

54. Question

What environment is most conducive to frost formation?

Dewpoint of surface is below freezing, dewpoint is above freezing.
Surface temperature is below freezing, air temperature is below freezing.
Surface temperature is above freezing, air temperature is below freezing.

Question 55 of 66

55. Question

In which situation is advection fog most likely to form?

A warm, moist air mass on the windwardside of mountains.
An air mass moving inland from the coast in winter.
light breeze blowing colder air out to sea.

Question 56 of 66

56. Question

An air mass moving inland from the coast in winter is likely to result in

rain.
fog.
frost.

Question 57 of 66

57. Question

What types of fog depend upon wind in order to exist?

Radiation fog and ice fog.
Steam fog and ground fog.
Advection fog and upslope fog.

Question 58 of 66

58. Question

Low-level turbulence can occur and icing can become hazardous in which type of fog?

Rain-induced fog.
Upslope fog.
Steam fog.

Question 59 of 66

59. Question

What is the best way for a remote pilot to determine the likelihood of local fog formation?

Monitor the temperature/dew point spread.
Monitor the wind conditions to insure the wind speed is not increasing.
Monitor the barometric pressure to insure that it is not decreasing.

Question 60 of 66

60. Question

To get a complete weather overview for the planned flight, the remote pilot in command should obtain

An outlook briefing.
An abbreviated briefing.
A standard briefing.

Question 61 of 66

61. Question

How would high density altitude affect the performance of a small unmanned aircraft?

No change in performance.
Increased performance.
Decreased performance.

Question 62 of 66

62. Question

If the outside air temperature (OAT) at a given altitude is warmer than standard, the density altitude is

equal to pressure altitude.
lower than pressure altitude.
higher than pressure altitude.

Question 63 of 66

63. Question

Which factor would tend to increase the density altitude at a given airport referenced in the weather briefing?

An increase in barometric pressure.
An increase in ambient temperature.
A decrease in relative humidity.

Question 64 of 66

64. Question

What are the standard temperature and pressure values for sea level?

5°C and 29.92" Hg.
59°c and 1013.2 millibars.
59°F and 29.92 millibars.

Question 65 of 66

65. Question

What effect does high density altitude have on the efficiency of a UA propeller?

Propeller efficiency is increased.
Propeller efficiency is decreased.
Density altitude does not affect propeller efficiency.

Question 66 of 66

66. Question

What effect does humidity have on performance?

It has no effect on performance.
it increases performance.
It decreases performance.