Definition
A flashlight or cockpit light that can switch between a white beam and a red beam, used by pilots during night flight. The white setting provides bright general illumination for preflight inspections and reading charts, while the red setting is used inside the cockpit at night because red light preserves the pilot's dark-adapted vision better than white light.
Plain English
A two-mode flashlight: white for bright tasks like checking the airplane on the ground, red for use in the cockpit at night so your eyes stay adjusted to the dark and you can still see outside.
Context Anchor
Seen in pilot equipment discussions, especially for night flying, cockpit checks, chart reading, and preflight inspection after dark.
Why Pilots Care
Makes the aircraft visible to other traffic at night or in reduced visibility, directly lowering mid-air collision risk.
Intuition Check
Do not read white/red light here as the airplane’s outside position lights. In this pilot-equipment context, it means a portable light the pilot carries and uses.
Example Sentence 1
During the preflight walkaround on a dark ramp, she used the white setting to inspect the airplane, then switched to red once seated in the cockpit.
Example Sentence 2
The white/red light on the vertical stabilizer helps other aircraft spot the plane during VFR operations at dusk.