| Acronym | Meaning |
 | PP | Present Position |
| PTTI | Precise Time And Time Interval Dissemination And Distribution |
| SCAS | Stability Control Augmentation System |
| PDE | Projected Operational Environment |
| RAM | Random Access Memory |
| DPET | Data Processing Equip Trnr (trident-11b101) |
| HIFR | Hover Inflight Refueling |
| SPO | Systems Program Office |
| OTPS | Operational Test Program Set |
| DSB | Defense Science Board |
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