Sim/graphics/animation/lights/airplane beacon light
Red provides phase offset. Green provides pulse speed (pulses per second). Blue provides a scaling for brightness. Alpha is ignored.
Alpha is set to brightness or 0 if it's off. RGB is set to white.
This light will turn off if the airplane beacon light is off.
This provides a pulsing light with customizable speed and brightness. It follows the beacon of the user's plane.