Us plane

Hello everyone,

Today I ask you once again for your help ...

a French colleague owns these portholes.

is it possible to know on which device they were intended to be mounted?

thank you all for your help.

alex

Looking like parts for mounting of light lens.

The one marked AN3148 is listed as Light Assembly, Fixed Landing, and uses a PAR-64, flat style bulb. Being an AN listed item, there could be dozens of different aircraft that used them.

As to the 141026 part number, no clue. It may be Grimes internal part number and therefore wouldn't show up on the IPB of a particular aircraft model.

Hello,
Thank you for your answers.
are there any ww2 parts?
could it have been mounted on b17, b25 etc ...?
they are offered to me for sale ....
thanks again

You can find the spec here AN3148 REV-1 ARMY-NAVY AERONAUTICAL LIGHT ASSEMBLY-FIXED

First edition was Jan 45 and it was revised in Jun 45 so it would probably relate to a late ww2 aircraft. You can rule out the B-17, B-24 and B-25 and any fighters - they all used leading edge or retractable lights.

The other items I do not know - they may be windows or camera hatch covers but without further info nothing can be determined. The part numbers do not ring any bells for me. The fact that some are painted suggests they were on the external surface of the aircraft. Light retaining rings inside leading edges were normally not painted. The quick release Dzus fasteners may indicate something that crew were expected to open in flight. The colour may suggest a navy aircraft.

Look for an inspection stamp - usually about 10mm or 3/8 size. If the stamp is any variation of HT in a circle/oval that just indicates the part was heat treated. Even an inspection stamp may not help as it could be a contractor stamp like Grimes or Kaiser. For example G12 in a circle will be a Grimes stamp. Stamps can be metal and pressed into the surface.