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USI Exam Study Questions And Answers
|Latest 2025 | Guaranteed Pass
What is "Ground Sample Distance? - Answer✔The size of a pixel projected on the ground.
What variables make up the formula for calculating "Ground Sample Distance? -
Answer✔Sensor altitude, sensor width, image width, focal length
Can you compare the relative and absolute accuracy of geospatial data used in RPAS
operations? - Answer✔Relative accuracy is the consistency of spatial relations in images and
absolute is the accuracy relative to known ground coordinates
What do "camera depression angle" and "azimuth" mean in the context of RPAS operations? -
Answer✔Depression angle is the angle from the sensor to the ground and azimuth is the angle
on the horizontal plane, or left and right
What is the difference between a low oblique and a high oblique aerial image? - Answer✔A low
oblique aerial image is one where the horizon is not visible, as the camera is almost directly
below, and high oblique images are at a high depression angle, looking at the horizon
What are the units of measurement commonly used in RPAS operations for altitude, airspeed,
distance, time, meteorological, and atmospheric conditions? - Answer✔AGL, knots, meters or
nautical or statute miles, zulu time, knots of winds, inches of mercury
What coordinate systems are commonly employed in RPAS operations, and how are these
systems used to determine the position of a point on the Earth's surface? -
Answer✔Geographic coordinate system, which uses latitude and longitude coordinates,
Universal transversal mercator, which uses their easting and northing coordinates to find a
location, separating the earth into 60 zones.
How do the objectives of aerial survey missions differ from those of aerial inspection missions?
- Answer✔Aerial survey views large areas to survey them, and aerial inspection missions closely
inspect wear and tear, integrity, corrosion, and potential risks.
1
, ©FYNDLAY 2025 ALL RIGHTS RESERVED 5:17 PM A+
What is the difference between "front lap" and "side lap" in relation to an aerial survey
mission? - Answer✔A front lap is the first pass of the area of operations, a side lap is the last
pass of that same area of operations, off to the side.
What is the generic workflow used to plan and execute an RPAS mission? - Answer✔Develop a
preliminary plan, visit the worksite and gather in situ data, and then conduct a safety review of
the hazards and issues identified during the first two steps.
Differentiate between "area of interest" and "area of operation" regarding RPAS mission
planning. - Answer✔The area of interest is the specific targets that the RPAS crew want to
survey, while area of operations is used to identify potential hazards as to where the AV will
operate
What does RPAS mission planning mean by "launch and recovery site"? - Answer✔The launch
and recovery site is the place where the pilot will take off and land the AV
Explain the concept of "mission objectives" in RPAS mission planning. - Answer✔Mission
objectives is the purpose and desired outcome of an air mission
Identify official sources for air space, Temporary Flight Restrictions, Facility Maps, sunset times,
weather, communication frequencies, and state regulations. - Answer✔The main source that is
used is LAANC for airspace authorizations
Differentiate between Class E airspace types (E4, E3, and E2) on a chart and explain the
authorization required. - Answer✔E4 does not need ATC authorization to fly in, associated with
class d airspace. E3 also doesn't need authorization to fly in, it provides a transition from
controlled to uncontrolled airspace, associated with class c airspace. E2 airspace requires
authorization and is for control towers that don't provide full time services
How can you identify Airspace and Temporary Flight Restrictions (TFR)specific to an operational
area? - Answer✔Use a LAANC authorization
What information can be determined by using an Airport Facility Maps (LAANC) for a specific
operational area? - Answer✔Controlled airspace coverage and height and time restrictions
How can you determine if a proposed operation falls within daylight, civil twilight, or night
conditions? - Answer✔By observing the state of cloud coverage, the sun, and the moon
What is the difference between a METAR and a TAF, and which one is more suited to
preliminary flight planning and why? - Answer✔Metar gives current conditions TAF is
anticipated conditions. TAFs are better for preliminary flight planning
What's the process for identifying the correct air traffic frequency to monitor in a specific
operational area? - Answer✔Using a Common traffic advisory frequency to communicate with
other pilots
2
USI Exam Study Questions And Answers
|Latest 2025 | Guaranteed Pass
What is "Ground Sample Distance? - Answer✔The size of a pixel projected on the ground.
What variables make up the formula for calculating "Ground Sample Distance? -
Answer✔Sensor altitude, sensor width, image width, focal length
Can you compare the relative and absolute accuracy of geospatial data used in RPAS
operations? - Answer✔Relative accuracy is the consistency of spatial relations in images and
absolute is the accuracy relative to known ground coordinates
What do "camera depression angle" and "azimuth" mean in the context of RPAS operations? -
Answer✔Depression angle is the angle from the sensor to the ground and azimuth is the angle
on the horizontal plane, or left and right
What is the difference between a low oblique and a high oblique aerial image? - Answer✔A low
oblique aerial image is one where the horizon is not visible, as the camera is almost directly
below, and high oblique images are at a high depression angle, looking at the horizon
What are the units of measurement commonly used in RPAS operations for altitude, airspeed,
distance, time, meteorological, and atmospheric conditions? - Answer✔AGL, knots, meters or
nautical or statute miles, zulu time, knots of winds, inches of mercury
What coordinate systems are commonly employed in RPAS operations, and how are these
systems used to determine the position of a point on the Earth's surface? -
Answer✔Geographic coordinate system, which uses latitude and longitude coordinates,
Universal transversal mercator, which uses their easting and northing coordinates to find a
location, separating the earth into 60 zones.
How do the objectives of aerial survey missions differ from those of aerial inspection missions?
- Answer✔Aerial survey views large areas to survey them, and aerial inspection missions closely
inspect wear and tear, integrity, corrosion, and potential risks.
1
, ©FYNDLAY 2025 ALL RIGHTS RESERVED 5:17 PM A+
What is the difference between "front lap" and "side lap" in relation to an aerial survey
mission? - Answer✔A front lap is the first pass of the area of operations, a side lap is the last
pass of that same area of operations, off to the side.
What is the generic workflow used to plan and execute an RPAS mission? - Answer✔Develop a
preliminary plan, visit the worksite and gather in situ data, and then conduct a safety review of
the hazards and issues identified during the first two steps.
Differentiate between "area of interest" and "area of operation" regarding RPAS mission
planning. - Answer✔The area of interest is the specific targets that the RPAS crew want to
survey, while area of operations is used to identify potential hazards as to where the AV will
operate
What does RPAS mission planning mean by "launch and recovery site"? - Answer✔The launch
and recovery site is the place where the pilot will take off and land the AV
Explain the concept of "mission objectives" in RPAS mission planning. - Answer✔Mission
objectives is the purpose and desired outcome of an air mission
Identify official sources for air space, Temporary Flight Restrictions, Facility Maps, sunset times,
weather, communication frequencies, and state regulations. - Answer✔The main source that is
used is LAANC for airspace authorizations
Differentiate between Class E airspace types (E4, E3, and E2) on a chart and explain the
authorization required. - Answer✔E4 does not need ATC authorization to fly in, associated with
class d airspace. E3 also doesn't need authorization to fly in, it provides a transition from
controlled to uncontrolled airspace, associated with class c airspace. E2 airspace requires
authorization and is for control towers that don't provide full time services
How can you identify Airspace and Temporary Flight Restrictions (TFR)specific to an operational
area? - Answer✔Use a LAANC authorization
What information can be determined by using an Airport Facility Maps (LAANC) for a specific
operational area? - Answer✔Controlled airspace coverage and height and time restrictions
How can you determine if a proposed operation falls within daylight, civil twilight, or night
conditions? - Answer✔By observing the state of cloud coverage, the sun, and the moon
What is the difference between a METAR and a TAF, and which one is more suited to
preliminary flight planning and why? - Answer✔Metar gives current conditions TAF is
anticipated conditions. TAFs are better for preliminary flight planning
What's the process for identifying the correct air traffic frequency to monitor in a specific
operational area? - Answer✔Using a Common traffic advisory frequency to communicate with
other pilots
2
