Hi , thanks for these initial comments. Agree I think it’s an undercarriage door or an airbrake, I have tried researching the various aircraft used in the conflict but it’s proving a frustrating task to match the piece!

There is no data plate, although there are some markings and serial numbers I have managed to find:

On one edge: K145202243 and X1AVM398883LP1

In a recess inside: HCG and other various numbers A84/21/672 plus 3838KL2. Also a stamped mark: KBE.

I don’t know if these will be of any use to anyone?

I have resized the photos and hopefully this is helpful view.

Thanks