After the Akaflieg Darmstadt workshop was bombed in September 1944, the D-33 project was moved to the Akaflieg München workshops at Prien am Chiemsee.
Darmstadt | Landgraviate of Hesse-Darmstadt | Philip of Hesse-Darmstadt | SV Darmstadt 98 | Akaflieg Darmstadt D-9 Konsul | Akaflieg Berlin B13 | Akaflieg Berlin B12 | Staatstheater Darmstadt | Landgravine Caroline of Hesse-Darmstadt | Joseph Ignaz Philipp von Hessen-Darmstadt | Frederika Louisa of Hesse-Darmstadt | Darmstadt-Dieburg | Akaflieg Stuttgart F.1 | Akaflieg Köln LS11 | Akaflieg Darmstadt D-41 | Akaflieg Darmstadt | Akaflieg Braunschweig SB-6 Nixope | 1. FCA Darmstadt |
Gross was a graduate of Akaflieg Darmstadt and the Sky Ghost was his third glider design after the Baker-McMillan Cadet and the Akron Condor.