Wikipedia
D-EWOH
D-EWOH is a Zlin Z 42M General Aviation aircraft. Prior to its registration to its current German tail number in 1991, it was registered in the German Democratic Republic as DDR-WOH. On 15 July 1987, Thomas Krüger stole it from the Gesellschaft für Sport und Technik (an East German military youth organisation) and flew it from in East Germany to RAF Gatow (later General-Steinhoff Kaserne) in West Berlin in order to facilitate his defection to the West.
It was later returned by road, passing through the Berlin Wall, although members of the RAF had adorned it with slogans like "Wish you were here".