| Acronym | Meaning |
 | THOLD | Threshold |
| ICAO | International Civil Aviation Organization |
| NC | Normally Closed |
| LME | Launch Monitor Equipment |
| BDCF | Baseline Data Collection Facility |
| SP-PCO | Program Control Office (KSC Shuttle) |
| SP | Shuttle Projects Office (KSC) |
| TE | Timing Electronics |
| IPS | Initiating Reference Document |
| POWS | Project Operating Work Statement |
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