| Acronym | Meaning |
| MTBM | Mean Time Between Maintenance |
| SFT | Shaft |
| MSE | Mechanical Support Equipment |
| LSD | Landing Ship Dock |
| K-DPPS | KSC DOD Payloads Project Specification |
| FMOF | First Manned Orbital Flight |
| S/A | Scheduled/Actual |
| PMS | Performance Measurement System |
| GT&A | Ground Test And Acceptance |
| IN. | Inch |