| Acronym | Meaning |
 | GHA | Greenwich Hour Angle |
| PAR | Precision Approach Radar |
| TDRR | Test Data Recording And Retrieval |
| RM | Rendezvous Maneuver |
| LDT | Linear Displacement Transducer |
| SPC | Shipping And Packing Cost |
| DISTR | DIUDynamic Integrated Test |
| SSL | System Software Loader |
| EGRET | Energetic Gamma Ray Explorer Telescope |
| CPDDS | COmPuter Program Detail Design Specification |
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