| Acronym | Meaning |
| CM&S | Communications Maintenance And Storage |
| FS | Functional Schematic |
| OMEWG | Orbiter Maintenance Engineering Working Group |
| TPM | 1Terminal Phase Midcourse #1 |
| IB | Instruction Book |
| IDR | IntermediateDesignReview |
| FPCA | Forward Power Control Assembly |
| GHE | Gaseous Helium |
| RD | Radiation Detection |
| VLBI | Very Long Baseline Interferometer |