This standard BS EN 4706:2019 Aerospace series. LED colour and brightness ranking is classified in these ICS categories:
29.140.99 Other standards related to lamps
49.095 Passenger and cabin equipment
This document defines selection ranks for LED Luminaires, and LEDs including OLEDs for the use in aircraft lighting. The size of these ranks is defined by the use of grades. This European Standard is valid for photopic light levels only.