| Acronym | Meaning |
 | W | Watt |
| PAD | Preliminary Advisory Data (Crew Data Uplink) |
| PSDP | Payload Station Distribution Panel |
| SIR | Shuttle Imaging Radar |
| ORI | Operational Readiness Inspection |
| LP | Liquid Propellant |
| IFB | Invitation For Bid |
| VLR | Very Low Range |
| GPI | Ground Position Indicator |
| PAM | Pulse Amplitude Modulation |
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