| Acronym | Meaning |
 | SSS | Stage Separation Subsystem |
| SLSA | Shuttle Logistics Support Aircraft |
| EPDB | Electrical Power Distribution Box |
| ST | Star Tracker |
| OPI | Orbiter Payload Interrogator |
| PRF | Parachute Refurbishment Facility |
| POP | Preflight Operations Procedures |
| NPL | Normal Power Level (see RPL) |
| MPL | Mechanical Parts List |
| B/O | Burnout |
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