| Acronym | Meaning |
 | ISL | Inertial Systems Laboratory |
| GG | Gravity Gradient |
| MDE | Modular Display Electronics |
| FDS | Flight Dynamics Software/System |
| SLAK | Spacelab Late Access Kit |
| FEID | Functional Engineering Interface Device |
| ICO | Integrated Checkout |
| OMC | Orbiter Maintenance And Checkout |
| NO | Nitric Oxide |
| INV | Inverter |
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