Cockpit lighting has been the subject of considerable discussion. In military aviation, red lighting was long used in the cockpit and pilots were required to wear red goggles for a certain period of time before night flight. These precautions for night adaptation were necessary because pilots who needed to spot enemy aircraft frequently flew from inadequately lighted airports and navigated by vision more than by instruments.

With the advent of adequately lighted airports and the general use of radio for navigation, "night vision" actually became less important. The tendency now is toward more complete illumination of the cockpit, with white light used more than red. Problems such as improper fuel selection and errors in course plotting or chart reading are much more significant now than the loss of night vision. Still, you should be familiar with a few facts about visual adaptation during night flying.