30.10. - 06.11.1985 on
D1 stands for the first Spacelab (SL) mission under German mission management and responsibility. The complete payload was controlled for the first time from outside the NASA centres by GSOC, acting as Payload Operation Control Centre (POCC). D1 was a multi-disciplinary mission with more than 70 experiments covering the fields of material- and life-sciences, navigation, communication and technology flown in 1985.