| Acronym | Meaning |
| S/C | Subcontractor |
| I | DAC Integrated Digital-Analog Converter |
| SSM | Support System Module |
| GF | Gage Factor |
| ITS | Instrumentation Telemetry Station |
| TSAC | Tracking System Analytical Calibration |
| SEADS | Shuttle EntrY Air Data System (Subsystem) |
| ETS | Electrical Test Set |
| CDH | Constant Delta Height |
| PIRN | Preliminary Interface Revision Notice |