[Martin V]

Hello Dénes, many thanks for the ultra-rare close-up photo, fantastic. The Baptism of Fire book by Mr.C.B.Stenge describes this plane as being damaged by accurate anti-aircraft machine-gun fire(p.41), so Your picture confirmes that the bombs were still attached and
the area above the tail wheel was open. It is where the First Aid kit was located.
There could be damage there, as the opening seems to be irregular a bit. Also later photos
of this Avia indicate some irregularities in this area.
Best Regard, and Thank You.
Martin