NVG Equipment and Operation
Comprehensive Questions (Frequently
Tested) with Verified Answers Graded A+
1 . During night flight your NVGs will gather various sources of light, amplify them, and create a
monochromatic green image that will greatly increase the safety of night flight. Sources of light
are either natural or artificial. - Answer: Both statements are true.
2 . Natural light sources that are very useful to NVGs include: - Answer: All of the answers are
correct.
3 . The angle of the moon changes at the rate of about: - Answer: 15 degrees per hour.
4 . Light from the sun can help NVGs as long as it is more than: - Answer: 12 degrees below the
horizon.
5 . For flight planning purposes, the easiest way to know when the sun may interfere with NVGs
is to know that at the end of evening twilight (EENT) and the beginning of morning nautical
twilight (BMNT) begins: - Answer: 48 minutes after sunset and 48 minutes before sunrise.
6 . To avoid inadvertent flight into instrument meteorological conditions it is important to: -
Answer: Occasionally look under the goggles for deteriorating conditions.
7 . Halos can be a sign of deteriorating weather conditions such as mist or fog. These halos are a
reliable indicator if: - Answer: You can see the trend of the halos.
8 . When flying in very low light conditions over featureless terrain and with low contrast, it is
possible that: - Answer: Changes in terrain features could be masked or disguised.
Comprehensive Questions (Frequently
Tested) with Verified Answers Graded A+
1 . During night flight your NVGs will gather various sources of light, amplify them, and create a
monochromatic green image that will greatly increase the safety of night flight. Sources of light
are either natural or artificial. - Answer: Both statements are true.
2 . Natural light sources that are very useful to NVGs include: - Answer: All of the answers are
correct.
3 . The angle of the moon changes at the rate of about: - Answer: 15 degrees per hour.
4 . Light from the sun can help NVGs as long as it is more than: - Answer: 12 degrees below the
horizon.
5 . For flight planning purposes, the easiest way to know when the sun may interfere with NVGs
is to know that at the end of evening twilight (EENT) and the beginning of morning nautical
twilight (BMNT) begins: - Answer: 48 minutes after sunset and 48 minutes before sunrise.
6 . To avoid inadvertent flight into instrument meteorological conditions it is important to: -
Answer: Occasionally look under the goggles for deteriorating conditions.
7 . Halos can be a sign of deteriorating weather conditions such as mist or fog. These halos are a
reliable indicator if: - Answer: You can see the trend of the halos.
8 . When flying in very low light conditions over featureless terrain and with low contrast, it is
possible that: - Answer: Changes in terrain features could be masked or disguised.
