General Electric's 4572 Sealed Beam Lamp is 28 volts and 150 watts. Check out the specs below for more details.
Aircrafts use a whole host of lamps for their lighting systems including those of the sealed beam variety. For those in the dark, sealed beam lamps consist of an all glass construction and built-in optics. The "sealed" in sealed lamp means the filaments and reflector are sealed off from the elements—for life. In other words, there's no need to worry about dirt, moisture, or the like as these lamps are impervious. This type of assembly is ideal for aircrafts, especially those used for landing. So if you need one, why not try General Electric's 4572 Sealed Beam Lamp?
Alternate PN#s: MS18006-4572 GE4572