Morgans wrote:

"Charlie" wrote How about something like


http://www.1000bulbs.com/category.php?category=391

There are landing light kits for homebuilts already available using
this style bulb. Various angles of coverage available, if you do a
little looking.


I wouldn't want to use something like that, for a landing light.
Recognition light, perhaps the 75 watt would be OK.

The bulbs you cite are used in low voltage landscaping applications.
Real landing lights are 250 watts, up to 600 watts, and some, more.

The beauty about the HID lights are multi-fold. No vibration breakage,
so a very long life. Low heat output. Low current draw, for the amount
of light produced. The output light frequency is such that objects
appear much brighter, and whiter; more like real daylight.

Unfortunately, they cost more. Your investment pays off in peace of
mind, that the light will work when you turn it on, and that you can
better see what you are trying to look at. :Less (or almost no)
maintenance is always a "good thing" in my book.

I'm sure that airliners use 600W+ lamps, but we aren't building
airliners. Real normal *traditional incandescant* landing lights are 250
watts. Sometimes. Halogens are typically twice as efficient as
traditional incandescents. If the only criteria is wattage, why suggest
using 35W HID lamps?

The bulbs cited are used in uncountable applications, including landing
lights.

'You pay your money, & you make your choice.'