Mics.lights

[mschlender]

For Sale various navlights and interior lights from parted out planes,don't know how to load pics

[GAHorn]

You can list them, along with condition, prices, contact info. Photos also are helpful.

[mschlender]

George I put on there I don't know how to put pics on and they can mail me nobody wants to call anymore and all want pics of each light

[JohnNielsen]

Do you have ant working wing tip position light bulbs? I would buy those from you. My phone is 715-568-3980
Thank you,
John Nielsen

[GAHorn]

Do you have ant working wing tip position light bulbs? I would buy those from you. My phone is 715-568-3980
Thank you,
John Nielsen

John, if you obtain any incandescent lamps be certain to wipe them with alcohol and don’t touch them with your fingers if you want them to last. One of the common failure modes of those types is due to skin-oils on the glass causes local-overheating and failure.

[cessna170bdriver]

Do you have ant working wing tip position light bulbs? I would buy those from you. My phone is 715-568-3980
Thank you,
John Nielsen

John, if you obtain any incandescent lamps be certain to wipe them with alcohol and don’t touch them with your fingers if you want them to last. One of the common failure modes of those types is due to skin-oils on the glass causes local-overheating and failure.

That’s mostly an issue with halogen bulbs, as they run much hotter than standard incandescents. I never wiped a position light clean, and never had a pre-mature failure of one. That said, I’m sure it wouldn’t hurt.

[GAHorn]

Not to appear disagreeable, but I’ll bet you’ll agree that’s a subjective observation. (I have not conducted any controlled experiment either and I am only relying upon what I was taught and subsequently read. I am only relaying that hoping to help others.)

It’s true what you say, that halogen lamps are particularly susceptible…but the reflective incandescent nav lamps such as the Whelen or UMA nav lamps, unlike ordinary incandescent lamps, get extremely hot…very much like halogen lamps. (Anyone who’s tried to remove one without waiting for it to cool-down and lost their fingerprints will agree with me, I’m sure.)

When you touch a lightbulb, or practically any non-porous surface, you leave tiny deposits of oil behind. If you smudge a halogen bulb, or a reflective incandescent one, that smudged area is no longer quite as transparent as the rest of the glass. That reduced transparency means that the glass will absorb more heat, rather than radiating it out, specifically in the area that is smudged.

But there’s even more at play than that. The oils in our fingertips also have an effect on the glass called devitrification, which is when glass crystallizes. Instead of presenting a smooth surface, it forms facets, planes, and grows less transparent, leading to even more heat absorption.

Uneven heating in the bulb’s casing leads to warping over time, which will break the bulb — or at least shorten its effective lifespan. Depending on how bad of a smudge you leave, this can be anywhere from minor to highly detrimental.

While specifically addressed towrds halogen lamps….it’s good advice to not touch and/or use alcohol to clean ones fingerprints off lamps that get hot such as these reflective nav lamps.

Of course, L.E.D.s remove a lot of this risk.