| Acronym | Meaning |
| OOS | Orbit-to-Orbit Shuttle |
| ESTEC | European Space Technology Center |
| PSIG | Pounds Per Square Inch Gauge |
| ESA | ExPlosive Safe Area |
| FSE | Flight Simulation Engineer |
| RFW | Request For Waiver (Deviation) |
| MTEE | Electrical Maintenance Test Equipment |
| DHA | Design Hazards Analysis |
| RBL | Right Buttock Line |
| GML | GeGMLGeneral Measurement Loop |