| Acronym | Meaning |
| M | LGS Microwave Landing Guidance System |
| Q | Dynamic Pressure |
| SCN | Specification Change Notice |
| NW | Nose Wheel |
| PIRN | Preliminary Interface Revision Notice |
| PSID | Pounds Per Square Inch Differential |
| STE | Special Test EquiPment |
| CONCN | Concentration |
| GT&A | Ground Test And Acceptance |
| DISP | Display |