| Acronym | Meaning |
| PCM | E Pulse-Code Modulation Event |
| SIR | System Interface Requirements |
| W/W | Weather |
| MU | Multiple Unit |
| LF | Load Factor |
| FCF | First Captive Flight |
| MRL | Manipulator Retention Latch |
| GHZ | Gigahertz |
| SEACF | Support Equipment Assembly And Checkout Facility |
| SP-OSO | Off-Site Offices (KSC Shuttle) |