|This sealed beam is 12-13 volt, 100 watts and is 4 1/2" in Diameter.|
Well see how long they last, but their useful life is longer than the non-quartz lights I was using, and they seem to be much brighter as well. Exact fit for my 172.
Quartz unit much better than original, arrived on time an not broken....
I installed the landing light and it works great. The first light came through broken in transit. Aircraft Spruce immediately replaced it with another light. VERY PLEASED with customer service!
The polarity does not matter on this unit.
No, this does not carry any certifications on their own. Replacement bulbs can be covered under the airframe STC for certified install. Please check with your A&P to determine if these can legally installed in your aircraft.