| Acronym | Meaning |
![](file.png) | EPL | List |
![](file.png) | EPMS | Engineering Performance Management System |
![](file.png) | EPO | Element Project Office |
![](file.png) | EPOC | External Payload Operations Center |
![](file.png) | EPPS | Electrical Power/Pyro Sequential System |
![](file.png) | EPR | Engine Pressure Ratio |
![](file.png) | EPRN | Emergency Program Release Notice |
![](file.png) | EPROM | Erasable Programmable Read Only Memory |
![](file.png) | EPS | Electrical Power System |
![](file.png) | EPS | Electrical Power System (Subsystem) |
![](file.png) | EPS | ExPerimental Power Supply |
![](file.png) | EPSP | Experiment Power Switching Panel |
![](file.png) | EPT | Emergency Procedure Trainer |
![](file.png) | EPT | Ethylene Propylene Terpolymer |
![](file.png) | EPTU | Events Per Time Unit |
![](file.png) | EPWG | Environmental Projects Working Group |
![](file.png) | EQ | Equivalent |
![](file.png) | EQE | Event Queue Element |
![](file.png) | EQL | Equal |
![](file.png) | EQUIP | Equipment |
![](file.png) | EQUIV | Equivalent |
![](file.png) | ER | Explanation Report |
![](file.png) | ERA | Electrical Replaceable Assembly |
![](file.png) | ERAP | Earth Resources Aircraft Program |
![](file.png) | ERB | Engineering Review Board |
![](file.png) | ERBE | Earth Radiation Budget Experiment |
![](file.png) | ERBS | Earth Radiation Budget Satellite |
![](file.png) | ERC | Event Recorder |
![](file.png) | ERCA | Electrochemically Regenerable CO2Absorber |
![](file.png) | EREP | Earth Resources Package |
![](file.png) | ERG | Ergometer |
![](file.png) | ERNO | Of European Consortium |
![](file.png) | ERNO | Germany (SPacelab Contractor) |
![](file.png) | ERO | Engineering Release Operations |
![](file.png) | ERP | Effected Radiative Power |
![](file.png) | ERP | Effective Radiation Power |
![](file.png) | ERP | Eye Reference Point |
![](file.png) | ERPM | Engineering Requirements And Procedures Manual |
![](file.png) | ERR | Error |
![](file.png) | ERR | CNTR Error Counter |
![](file.png) | ERRC | Expendability/Recoverability/Repair Capability |
![](file.png) | ERS | Earth RecoverySubsystem |
![](file.png) | ERS | Engineering Release System |
![](file.png) | ERS | Entry And Recovery Simulation |
![](file.png) | ERSI | Elastomeric Reusable Surface Insulation |
![](file.png) | ERSIR | Earth Resources Shuttle Imaging Radar |
![](file.png) | ERTS | Earth Resources Technology Satellite |
![](file.png) | ERU | Earth Rate Unit |
![](file.png) | ERV | Expiratory Reserve Volume |
![](file.png) | ES | Escape System |