| Acronym | Meaning |
| PMIC | Precious Metal Indicator Code |
| SMTP | Simple Mail Transfer Protocol |
| PPB | Power Plant Bulletin (tdc 01) |
| IGNRQ | Ignition Request |
| DOP | Doppler |
| ACK | Acknowledge |
| MFHBVF | Mean Flight Hours Between Verified Failures |
| BORE | Boresight |
| EAS | Equivalent Airspeed |
| PDD | Program Description Document Udi-e-21251a/mod |