| Acronym | Meaning |
| STRT | Start |
| LORAN | Long Range Navigation |
| MDU | Multiplexer And Distribution Unit |
| EMS | Engine Monitoring System |
| AFTA | Advanced First Term Avionics |
| PTPR | Program Test Procedures And Reports |
| ABEC | Analog Backup Engine Control |
| BAUD | Characters Xmitted/sec Serially From A Computer Holding Reg |
| TPO | Tentative Program Objectives |
| RIG | Reuse Library Interoperability Group |