| Abbreviation | Definition |
|---|---|
| PACS | Pointing and Attitude Control System |
| PAD | Preliminary Advisory Data |
| PAD | Preliminary Advisory Data (Crew Data Uplink) |
| PAD | Pressure Anomaly Detection |
| PAD | Program Approval Document |
| PAD | Propellant Acquisition Device |
| PAE | Preventive Action Engineer |
| PAE | Problem Assessment Engineer |
| PAF | Payload Attach Fitting |
| PAF | Peak Annual Funding |
| PAFB | Patrick Air Force Base |
| PAGEOS | PAssive GEOdetic Satellite |
| PAH | Payload Accommodations Handbook |
| PALAPA | Indonesian Communications Satellite |
| PALS | Photo Area and Location System |
| PALS | Precision Approach and Landing System |
| PAM | Payload Assist Module |
| PAM | Pulse Amplifier Modulation |
| PAM-A | PAM, Atlas-Centaur Class Spacecraft |
| PAMB | Pressure Ambient |