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ATSC 231 Block 5 Lesson Objectives
(Final Prep) Questions and Answers
100% Pass
How has wind shear impacted weather accidents under Part 121 operation? - ✔✔Wind Shear has a very
small percentage of weather related accidents
How has wind shear impacted Part 135 weather accidents? - ✔✔Wind shear has a very small impact.
Wind alone is 25% of accidents though.
Wind shear impact on Part 91 operation - ✔✔Wind shear small, wind alone is the biggest.
Wind shear definition - ✔✔Change in speed and/or direction over distance
What is shear gradient? - ✔✔Change in wind/change in distance
What is considered severe wind shear? - ✔✔IAS> 15 knots
VSI> 500 FPM
What is convective wind shear? - ✔✔Wind shear resulting from convective clouds
What is low level wind shear? - ✔✔Occurs below 2,000 AGL
Large change in wind over short distance
Hazard on Final approach/departure
How is performance affected with a decreasing headwind on Approach? - ✔✔Performance decrease
Emily Charlene © 2025, All Rights Reserved.
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Loss of indicated airspeed
Increased rate of descent
How is performance affected with a decreasing headwind on departure? - ✔✔Performance Decrease
Loss of indicated airspeed
decreased rate of climb
How is performance affected with an increasing headwind on approach? - ✔✔Performance increase
Gain of Indicated airspeed
Decreased rate of descent
How is performance affected with an increasing headwind on departure? - ✔✔Performance increase
Gain of IAS
Increased rate of climb
How is performance affected on approach with a decreasing tailwind? - ✔✔performance increases
Gain of IAS
Decreased rate of descent
How is performance affected on departure with a decreasing tailwind? - ✔✔performance increases
gain of IAS
Increased rate of climb
How is performance affected on approach with an increasing tailwind? - ✔✔performance decreases
loss of IAS
Emily Charlene © 2025, All Rights Reserved.
ATSC 231 Block 5 Lesson Objectives
(Final Prep) Questions and Answers
100% Pass
How has wind shear impacted weather accidents under Part 121 operation? - ✔✔Wind Shear has a very
small percentage of weather related accidents
How has wind shear impacted Part 135 weather accidents? - ✔✔Wind shear has a very small impact.
Wind alone is 25% of accidents though.
Wind shear impact on Part 91 operation - ✔✔Wind shear small, wind alone is the biggest.
Wind shear definition - ✔✔Change in speed and/or direction over distance
What is shear gradient? - ✔✔Change in wind/change in distance
What is considered severe wind shear? - ✔✔IAS> 15 knots
VSI> 500 FPM
What is convective wind shear? - ✔✔Wind shear resulting from convective clouds
What is low level wind shear? - ✔✔Occurs below 2,000 AGL
Large change in wind over short distance
Hazard on Final approach/departure
How is performance affected with a decreasing headwind on Approach? - ✔✔Performance decrease
Emily Charlene © 2025, All Rights Reserved.
, 2|Page
Loss of indicated airspeed
Increased rate of descent
How is performance affected with a decreasing headwind on departure? - ✔✔Performance Decrease
Loss of indicated airspeed
decreased rate of climb
How is performance affected with an increasing headwind on approach? - ✔✔Performance increase
Gain of Indicated airspeed
Decreased rate of descent
How is performance affected with an increasing headwind on departure? - ✔✔Performance increase
Gain of IAS
Increased rate of climb
How is performance affected on approach with a decreasing tailwind? - ✔✔performance increases
Gain of IAS
Decreased rate of descent
How is performance affected on departure with a decreasing tailwind? - ✔✔performance increases
gain of IAS
Increased rate of climb
How is performance affected on approach with an increasing tailwind? - ✔✔performance decreases
loss of IAS
Emily Charlene © 2025, All Rights Reserved.
