| Acronym | Meaning |
 | PKT | Pocket |
| PL | Payload |
| PL | Payload (P/L Preferred) |
| PL | Plate |
| PL | Plug |
| PL | Postlanding (P/L Preferred) |
| PL | Prelaunch |
| PL/SNSR | Payload Sensor |
| PLA | Parachute Location Aid |
| PLACE | Equipment |
| PLACE | Position Location Aircraft Communications |
| PLAT | Platform |
| PLB | Payload Bay |
| PLB | Payload Bay |
| PLBD | Payload BaY Door(s) |
| PLBK | Playback (PB Preferred) |
| PLD | Program Listing Document |
| PLDI | Payload Data Interleaver |
| PLDM | PayloadManagement |
| PLDS | Payload Support |
| PLGSS | Payload Ground Support Systems |
| PLH | Payload Handling |
| PLI | Payload Interrogator |
| PLISN | Provisioning List Item Sequence Number |
| PLL | Phase Locked Loop |
| PLM | PayloadManagement |
| PLM | Payload Monitoring |
| PLMS | Program Logistics Master Schedule |
| PLN | Plan |
| PLN | Program Logic Network |
| PLRD | Payload Requirements Document |
| PLRV | Payload Launch Readiness Verification |
| PLS | Payload Systems |
| PLS | Post Landing And Safing |
| PLS | Preliminary Landing Site |
| PLS | Primary Landing Site |
| PLS | Propellant Loading System |
| PLSL | Propellants And Life Support Laboratory |
| PLSP | Payload Signal Processor |
| PLSP | Payload Signal Processor |
| PLSS | Portable Life Support Subsystem |
| PLSS | Portable Life Support System |
| PLSS | Primary Life SuPport Subsystem |
| PLT | Pilot |
| PLTS | Precision Laser Tracking System |
| PLUM | Payload Umbilical Mast |
| PLV | Postlanding Vent |
| PLVC | Postlanding Vent Control |
| PM | Phase Modulation |
| PM | Payload Management |
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