Engine Ground Cover for securing a Space Shuttle attitude control thruster after a mission. Measuring approximately 9 x 14, the cover consists of a bright red cover plate with rubber seal, and a long stainless steel probe angled to fit the thruster. Lever on the face of the cover expands the plug tip, locking it into the thruster. Two sealed ports allow safe purging. Warning labels printed along the cover read, “Remove Before Flight,” and “Caution Hypergolics May Be Present.” A Ral Plastic Forming, Inc. manufacturer’s label is affixed to the cover and reads, “Engine Ground Cover, ME193-0062-0122, Date of Mfg. 7-1-81.” In fine condition. RR Auction COA.