LESSON 1
PRACTICE EXERCISE
ANSWER KEY AND FEEDBACK
Item
Correct Answer and Feedback
1. D.
when the ILS is being used for approach or landing guidance.
When the ILS is in use and an aircraft is past the hold line, obstacle clearance and the
integrity of the ILS course signals will not be met. This creates an unsafe approach.
(page 1-5, para 5)
2. D.
the ceiling is less than 800 feet, the visibility is less than two miles, or both
Aircraft or vehicles that enter the ILS critical area, may disrupt or block the elevation
glide slope radio signal. The loss of the radio signal could cause an accident due to bad
weather conditions and the proximity of the aircraft to the ground. (page 1-6, para 5b)
3. D.
for safe and efficient use of the airport movement area
The only way to ensure safe and efficient use of the movement area is to have good
communication between the local and ground controllers. (page 1-7, para 6)
4. D.
the runway is other than the one assigned before as active.
Anytime the ground controller changes the runway that an aircraft has been taxied to, he
must tell the local controller to ensure that the local controller knows where the aircraft
is. (page 1-8, para 6a)
1-13
AV0944
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