What color designates the left wing's positioning light on an aircraft?

The color that designates the left wing's positioning light on an aircraft is red. This is part of a standardized color-coding system used in aviation for navigation lights. The placement and colors of the lights are designed to help visual identification of the aircraft's orientation and direction when viewed from various angles, especially at night or in poor visibility conditions.

On most aircraft, the left wing position light is red, while the right wing position light is green. The use of these specific colors allows pilots, ground crews, and air traffic control personnel to easily identify an aircraft's direction and determine which way it is facing. This is particularly critical during takeoff, landing, and while taxiing to avoid collisions.

Understanding the color coding of navigation lights is essential for all pilots, as it plays a significant role in maintaining safety within the aviation environment.