This J-20 (Yugoslav Air Force designation of the P-2) is thought to have been manufactured in 1977 and entered service as 30157. The specific history of it is unknown at the upload date, but the J-20 was phased out of operational service in 1989. This one ended up in the storage area of the Muzej Vazduhoplovstva Beograd where it was first noted in Aug-2003.