Definition
The pilot's direct, unaided view of the outside world through the cockpit windows, used to identify the runway environment, terrain, traffic, and other visual references during flight. In the context of Synthetic Vision Guidance Systems (SVGS), natural vision is the actual outside view, distinguished from the computer-generated terrain image displayed on the flight instruments.
Plain English
What you see with your own eyes when you look out the windscreen, as opposed to what a screen inside the cockpit shows you.
Context Anchor
Seen in discussions of synthetic vision guidance systems, especially when comparing the real outside view with a computer-generated view of terrain, runways, or obstacles.
Derivation
"Natural" comes from the Latin naturalis, meaning "belonging to nature" or "as it really is." Paired with "vision," it points to seeing the world directly, without electronic enhancement or simulation.
Why Pilots Care
Allows pilots to verify instrument guidance against real terrain and runway cues, supporting safe transition from instruments to visual flight.
Intuition Check
Natural vision does not mean perfect eyesight or vision without glasses. In this context, it means the direct outside view, not an electronic picture.
Example Sentence 1
The captain transitioned from the synthetic vision display to natural vision once the approach lights came into view through the windshield.
Example Sentence 2
The approach remained stable because natural vision confirmed the runway alignment shown on the display.