It was aircraft #403. Adria, still a Yugoslavian operator then, who had a very seasonal operation, leased several of them in Summer 1987, when they were certainly cheap on the market. The aircraft was fairly new when you rode it, first delivered to Tarom in summer 1984. By 2000 Romavia, the Tarom charter offshoot, was finished with it and it was dumped at Bucharest, where it was still laying derelict some years later.
The best-known leases of this fleet were to Ryanair in Dublin at the same time, they started off the jet services to Luton, Liverpool and elsewhere, and as described Romanian flight crews operated them. In 1987, which was before the fall of the Berlin Wall, there was great competition in Romania to operate a contract based in The West, and several of the test pilots from the ROMBAC factory got jobs at Dublin. I'm sure their flying skills were the best but their English wasn't, and they were shortly prohibited from making PA to the cabin, except in an emergency. Pity poor ATC.
http://www.airliners.net/photo/Adria...1RC/0294139/M/