What visual illusion occurs with a stationary point of light that appears to be moving?

Prepare for your Helicopter PPL Checkride Test. Study with flashcards and multiple choice questions, each question has hints and explanations. Get ready for your pilot examination!

The phenomenon where a stationary point of light appears to be moving is known as autokinesis. This occurs particularly in low-light conditions where, after staring at a fixed light source for an extended period, peripheral vision may lead the observer to perceive that the light is shifting positions.

During a flight, if the pilot fixates on a singular bright point of light, such as a distant star or an airport runway light, the surrounding darkness can create the illusion of motion. This is significant for pilots, as it may distract or confuse them, contributing to disorientation and potentially compromising situational awareness.

In contrast, the other options refer to different situations or visual phenomena. Ground Light Confusion relates to bright lights on the ground that can mislead pilots during flight. The Black Hole Approach describes a scenario where a pilot approaches an airport with no visible horizon or approach lights, leading to difficulties in judging altitude. Visual Impairment typically refers to a reduced ability to see due to various factors and does not specifically address the illusion of movement.

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