| Acronym | Meaning |
 | PDM/FM | Pulse Duration Modulation/Frequency Modulation |
| HVDS | Hypergolic Vapor Detection System |
| ILA | Instrument Landing Approach |
| VSA | Verification Site Approval |
| NMI | NASA Management Instruction |
| G | CCC Ground Control Computer Center |
| PM | PMAPPerformance Monitor Annunciation Panel |
| SP-PAI | Project Assessment And Integration Staff (KSC) |
| SPA | Servo Power Amplifier |
| NM | Nanometer |
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