Astute blog watchers will notice that this card is from Belarus but has a Russian (RU) prefix instead of a Belarussian (BY) one! The sender was visiting her grandmother in Belarus and sent this card from there, so (in Postcrossing terms) this was technically a card sent from Russia, but actually mailed from Belarus!)
This World War I era plane is housed at the National Museum of the US Air Force in Dayton, Ohio. Out of the original 320 Fokker Dr. 1s, none survive. This one is a reproduction made for the museum. This is the plane most associated with the infamous Red Barron, Manfred von Richthofen.