| Acronym | Meaning |
![](file.png) | SPCU | Simulation Process Control Unit |
![](file.png) | SPCW | StoredProgramCommandWord |
![](file.png) | SPD | Speed |
![](file.png) | SPD | Standard Practice Directive |
![](file.png) | SPD | R Software Preliminary Design Review |
![](file.png) | SPDB | Subsystem Power Distribution BC)x |
![](file.png) | SPDBK | SpeedBrake |
![](file.png) | SPDCI | Standard Payload Display And Control Interface |
![](file.png) | SPE | Solid Polymer Electrolysis |
![](file.png) | SPE | Static Phase Error |
![](file.png) | SPEC | Specialist Function |
![](file.png) | SPEC | Specification |
![](file.png) | SPECT | Spectrometer |
![](file.png) | SPEE | Special Purpose End Effector |
![](file.png) | SPF | Single Point Failure |
![](file.png) | SPF | Software Production Facility |
![](file.png) | SPF | Spacelab Processing Facility |
![](file.png) | SPFA | Single Point Failure Analysis |
![](file.png) | SPFP | Single Point Failure Potential |
![](file.png) | SPG | Signal Point Ground |
![](file.png) | SPG | Single Point Ground |
![](file.png) | SPHER | Spherical |
![](file.png) | SPI | Surface Position Indicator |
![](file.png) | SPI | Surface Position Indicator |
![](file.png) | SPIAP | Shuttle/Payload Integration Activities Plan |
![](file.png) | SPICE | Europe |
![](file.png) | SPICE | SPacelab Payload Integration And Coordination In |
![](file.png) | SPIDF | Support Planning Identification File |
![](file.png) | SPIDPO | Office (JSC) |
![](file.png) | SPIDPO | Shuttle Payload Integration And Development Progra |
![](file.png) | SPIDPO | Shuttle Payload Integration And Development Program Office |
![](file.png) | SPIF | Shuttle Payload Integration Facility |
![](file.png) | SPIF | Standard Payload Interface Facility |
![](file.png) | SPII | Shuttle Program Implementation Instruction |
![](file.png) | SPIMS | Shuttle Program Information Management System |
![](file.png) | SPKB | SpeedBrake |
![](file.png) | SPKR | Speaker |
![](file.png) | SPL | Scratch Pad Line |
![](file.png) | SPL | Serialized Parts List |
![](file.png) | SPL | Sound Pressure Level |
![](file.png) | SPL | System Programming Language |
![](file.png) | SPLX | Simplex |
![](file.png) | SPLY | Supply |
![](file.png) | SPM | SubsystemProjectManager |
![](file.png) | SPMS | Special Purpose Manipulator System |
![](file.png) | SPN | Shuttle Project Notice (KSC) |
![](file.png) | SPND | Suspend |
![](file.png) | SPO | Shuttle Projects Office |
![](file.png) | SPO | Spare Parts Order |
![](file.png) | SPO | SYstem Program Office |