Unknown airframe window

looks very much like a Varsity fuselage side window I used to have in the 70s 

Some similarities to the DC 3 cockpit side window.

Looks a bit like a flight deck side window/DV window,they often operate by moving inboard a little and then slide back on tracks until fully open.

Mark

I cannot offer any help with identifying this item but from what I can see the following might help.

1. The frame is a two piece aluminium casting, which suggests from an airframe produced in large numbers due to casting tooling costs. If its very light it could be cast magnesium.  

2. The difficult to read part numbers are the casting number of that piece of the frame, potentially having nothing in common with the p/n of the finished part which is probably stamped on somewhere. 

3. It appears to have two hinge points and a third lug. As Nicko has said it looks as if it opens inwards and my guess is top hinged with the third lug for locking into some sort of latch that holds it up and out of the way when open.

4. It looks to me like a US made item but that’s just a gut feeling, and not a pressurised airframe due to the seal being one designed to keep wind/water out and not air in.

5.  My guess its from something late 40’s or newer, Grumman Albatross, C-119, C-123 or helicopter S-55/58.

Richard

Hi Mark.

Is this light brown ring around the edges a seal and that is on the exterior? Then it would be an inward opening door? If so, it would not be a door for usual access, perhaps, but instead for emergency use. Also it looks like it wouldn’t be very flush with the surrounds, therefore either a comparatively low speed aircraft or goes on the airframe where aerodynamic smoothness is not important.