LESSON 6
PRACTICE EXERCISE
The following items will test your grasp of the material covered in this lesson. There is only one correct
answer for each item. When you have completed the exercise, check your answer with the answer key
that follows. If you answer any item incorrectly, study again that part which contains the portion
involved.
1.
Elevations at the threshold, stop end, and highest elevation should be
determined to the nearest ______________________________________________________________.
A.
0.001 foot
B.
0.01 foot
C.
0.1 foot
D.
1.0 foot
2.
Where are the navigational imaginary surfaces or obstruction identification surfaces defined?
A.
FAR-77
B.
DMS special test 031
C.
FAA 405
D.
Survey SOPs
3.
What surface extends from a periphery of a surfaces outward and upward at a slope of 20:1?
A.
Primary
B.
Outer horizontal
C.
Transitional
D.
Conical
4.
What is the slope of the approach-clearance surface?
A.
100:1
B.
50:1
C.
20:1
D.
7:1
EN0593
6-18
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