QUNO - YWR2aQ==
- radar controller
- radar display
- radar identification
- radar map
- radar monitoring
- radar position indication
- radar position symbol
- radar separation
- radar service
- radar track position
- radar unit
- radar vectoring
- radian
- radio direction-finding station (RR S1.91)
- radiotelephony
- ramp
- rapid exit taxiway
- rated air traffic controller
- rating
- RCC
- receiving unit/controller
