NVGs Flashcards
1) Low battery LED indicator flashing
2) Partial or complete degradation of NVG image, including focus, shading, edge glow, light or dark spots, excessive honeycomb, distortion, flicker, and veiling glare.
NVG FAILURE (Electrical)
- ANNOUNCE FAILURE TO THE CREW
If failure affects the PAC: - FLIGHT CONTROLS - CONDUCT POSITIVE TRANSFER TO SAFETY PILOT, FLIGHT CONDITIONS PERMITTING.
Visual Illusion Pnemonic
FFF CRASH SAR
Fixation Flicker Vertigo False Horizon Confusion with Ground Lights Relative Motion Autokinesis Structural Illusions Height and Depth Perception Size Distance Altered Plane of Reference Reversible Perspective
When a static light is stared at in the dark, it appears to move; this is known as:
Autokinesis
Confusing ground lights with stars or aircraft is known as:
Confusion with ground lights/ground light misrepresentation
When stopped at a light and the car next to you starts to drive forward, the feeling of rolling backwards (though remaining stationary) is known as:
Relative motion
At night, when an aircraft appears to be travel long away from you but is in fact coming towards you or vice versa is known as:
Reversible perspective
Cloud formations or ridge lines that may be confused with the horizon or the ground may cause:
False horizon
When approaching a perpendicular line of mountains or clouds, aviators may feel the need to climb even though their altitude is sufficient. When flying parallel to the same features, you may bank away from them. This is known as:
Altered reference planes
When flying over water, deserts, or other areas of low contrast, you may experience the illusion of feeling higher above the terrain than you really are. This is known as:
Height perception illusion
A light flickering between 4 and 20 cycles per second that produces unpleasant or dangerous reactions is known as:
Flicker Vertigo
When an aviator ignores orientation cues and fix their attention on a goal or object they are experiencing a phenomena known as:
Fixation or fascination
Heat waves, snow, sleet or other factors that distort or obscure vision cause:
Structural Illusions
When viewing a light that increases or decreases in luminance that is misinterpreted as approaching or retreating:
Size-Distance Illusion
