| Acronym | Meaning |
| NMC | National Meteorological Center |
| ARC | Ames Research Center |
| RRL | Rudder Reference Line |
| VT | STS Processing (KSC VO Dir.) |
| MFG | Manufacturing |
| BCP | Benchmark Control Point |
| FSGS | Flare/Shallow Glide Slope |
| ACRC | Assured Crew Return Capability - Now ACRV |
| C | OfF Construction Of Facilities |
| DI | Discrete Input |