It takes a while for otherwise common technologies to filter down to aircraft applications. And so it went with LED lighting, with welcomed advantages.
Lighting up the airframe with LEDs allows airplanes to be seen as effectively as in the old days of incandescent lamps (the FAA requirements for visibility, brightness and all that have not changed), but without the draw on the electrical system. They’ll also eliminate the over and over again draw on the pocket book that’s too familiar with frequent replacement of traditional landing and taxi lights. That’s because LEDs are so simple they last for thousands of hours, can endure vibration out the kazoo and reduce the electrical requirements of a system. Many owners keep LED landing and taxi lights on all the time.