飞机仪表板和驾驶舱照明所需的系统应能在所有外部照明条件下提供足够强度和分布的照明，以便机组人员能够阅读仪表、标牌、检查表、手册、地图、仪表颜色编码、区分控制等，而不会对其在飞机外的视觉造成过度干扰。

The desired system for aircraft instrument panel and cockpit lighting is one that will furnishlight of adequate intensity and distribution under all conditions of external lighting so that the crew may read instrumentation, placards, check lists, manuals, maps, instrument color coding, distinguish controls, etc., without undue interference with their vision outside of the aircraft.