"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.
--
Jim in NC