Berlin Tegel (TXL) – both – thanks to Rainer Bertz for confirmation
Cologne (CGN) – clockwise
Dusseldorf (DUS) – both
Frankfurt (FRA) – both
Hamburg (HAM) – clockwise
Hanover (HAJ) – counter-clockwise
Leipzig Halle (LEJ) – counter-clockwise – except a broken one – thanks to S Engel
Lubeck (LBC) – counterclockwise – thanks to Jim Teeling, Ilfracombe, Devon
Munich (MUC) — counterclockwise — thanks to Richard Lindstrom
Nurnberg (NUE) – clockwise
Saarbrucken (SCN) – clockwise – thanks to Andrew Simpson