| Acronym | Meaning |
 | FDR | Flight Data Recorder - Franklin Delano Roosevelt |
| BU | Bulgaria (FIPS 10-4 Country Code) - Burma (ISO 3166 Digram; Obsolete Since 1989) |
| ASRAAM | Advanced Short-Range Air-to-Air Missile |
| HURD | Hird Of Unix-Replacing Daemons (cf. Hird) |
| IDE | Integrated Development Environment - Integrated Drive Electronics |
| PCI | U.S. Pacific Islands Trust Territory (ISO 3166 Trigram; Obsolete 1986) -Peripheral Component Interconnect (computer Bus) |
| METL | Mission Essential Task List (mettle) |
| PK | Pakistan (ISO 3166 And FIPS 10-4 Country Code Digram) - Petakelvin -Player Kill[er] - Probability Of Kill -PolyKetone -Pulemet Kalashnikova (Russian ?? ??????? ??????????? |
| LIVE | Liquid Inertial Vibration Eliminator |
| IY | Iraqi-Saudi Neutral Zone (FIPS 10-4 Territory Code; Obsolete 1993) |
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