D-BOX: Distribution Box
D/F: Direct Finding
DAC: Day After Contract
DAF: Desert Air Force
DAFTF: Desert Air Force Training Flight
DATCO: Deputy Air Traffic Controller
DBF: Destroyed by Fire
dbr: Damaged beyond repair
DCM: Distinguished Conduct Medal
DDR: Deutsche Democratic Republic
Det/Dett: Detachment
DEW: Distant Early Warning
DFC: Distinguished Flying Cross
DFCS: Day Fighter Combat School
DFLS: Day Fighter Leaders School
DFM: Distinguished Flying Medal
DGA: Director General of Aviation
DGRD: Director General of Research & Development
DGS: Diego Garcia tracking Station
DHFS: Defence Helicopter Flying School
DI: Daily Inspection
DI: Drill Instructor
Disb: Disbanded
DLAM: Defense Logistics Agency Manual
DME: Distance Measuring Equipment
DNBI: disease and non-battle injury
DNCO: Did Not Complete Operation
Do: Dependability Operational
DOB: Deployed Operating Base
DoD: Department of Defense
DoDD: Department of Defense Directive
DOE: Department of Energy
DOEHRS-IH: Department of Defense Occupational & Environmental Health Readiness System - Industrial Hygiene
DOJ: Department of Justice
DRU: Direct Reporting Units
DSO: Distinguished Service Order
DTC: Descent Through Cloud
DTD: Director of Technical Development
DTD: Directorate of Technical Development
DTEO: Defence Test & Evaluation Organisation