| Acronym | Meaning |
| ENAV | Electronic Navigation |
| APN | Aviation Procurement Navy |
| SIM | Software Engineering Environment (see) Information Model |
| CPTP | Computer Program Test Procedures (plan) |
| COTR | Contracting Officers Technical Representative |
| AIM | Authoring Instructional Materials Program |
| ISAM | Indexed Sequential Access Method |
| TLCSC | Top-level Computer Software Component |
| PCTL | Percentile |
| FFIBR | Fuel Filter Impending Bypass, Right Engine |