D
- D-value
- dangerous goods accident
- dangerous goods incident
- data convention
- data link communications
- data link initiation capability
- data product
- data product specification
- data quality
- data set series
- database
- datum
- de-icing/anti-icing facility
- de-icing/anti-icing pad
- dead reckoning
- deceleration
- decision altitude
- declared capacity
- declared distances
- declared distances - heliports
- declared temperature
- decompression sickness
- defined point after take-off
- defined point before landing
- delay
- delta
- demand
- demand and capacity balancing
- demonstration flight
- density altitude
- dependent parallel approaches
- deportation order
- deportee
- depressurization
- descent
- design landing mass
- design take-off mass
- design taxiing mass
- destination alternate
- destination sign
- detect and avoid
- difference in depth of modulation
- digital elevation model
- dilution of precision
- direct flight
- direct route
- direct transit area
- direct transit arrangements
- direction sign
- dischargeable weight
- discrete code
- discrete source damage
- disembarkation
- disinsection
- dispatch deviation procedures guide
- displaced threshold
- disruptive passenger
- dissipation
- dissipation trail
- distance DR
- distress
- distress call
- distress frequency
- distress message
- distress phase
- distress traffic
- distressed aircraft
- ditching
- diversion
- docking chart
- domestic
- domestic airport
- domestic flight
- dope
- downburst
- downdraft
- downwash
- downwind leg
- drag brace
- drift
- drift angle
- drift correction
- driven region
- driving region
- drizzle
- drogue-refuelling
- drogue parachute
- drone
- dry-adiabatic process
- dry operating mass
- dry runway
- dry snow
- dry weight
- dual flight instruction
- dual instruction time
- duplicatus
- dust
- dutch roll
- duty period
- dynamic hydroplaning
- dynamic stability
- dysbarism