1 min readSOFIA 747SPNASAJun 05, 2008 Image Article SOFIA 747 being towed into Hangar 703 at the Dryden Aircraft Operations Facility in Palmdale, CA. Photo courtesy John Torres. Jan. 15, 2008 SOFIA 747 being towed into Hangar 703 at the Dryden Aircraft Operations Facility in Palmdale, CA. Photo courtesy John Torres.