It does make a lot of sense. LEDs at the 5,000-6,000K color temperature seem easier to see than the lower color temperature of standard lights and strobes. And LEDs can be made to fade in/fade out, blink on and off, or strobe. Their "on/off" times are essentially instantaneous (you can cycle them at hundreds or thousands of Hz if you like). Also, they age by total time powered up, but by number of times powered up. And, honestly, once the LED
is installed, a given airline might
have to replace it once during the entire lifetime of the aircraft. They're an especially good choice for the exterior of aircraft because they perform well even at very low temperatures.
The big issue is that, while they're easy enough to replace for bulbs in your house, it might not be so simple in an airplane or a car. A LED
's electrical behavior is different from standard bulbs/strobes and some vehicular electrical systems are finicky enough that a simple swap-out isn't possible.
|Quoting rydawg82 (Reply 6):|
The 747-8 also has LED wingtip strobes, while the tail strobe is a conventional strobe.
I wonder why they went that way.