| Acronym | Meaning |
| PTAN | Precision Terrain Aided Navigation |
| DAFIF | Digital Aeronautical Flight Information File |
| IG | Inspector General |
| DORA | Defence Of The Realm Act |
| AV | Anguilla (FIPS 10-4 Territory Code) -Audio-Visual -Aviation |
| UBC | United Baptist Church - University Of British Columbia |
| TIBS | Tactical Information Broadcast System |
| POCD | Post-Operative Cognitive Dysfunction |
| SCAP | Supreme Commander Allied Powers (Allied Occupation Of Japan) |
| LAAS | Local Area Augmentation System - Los Angeles Astronomical Society |