R
- R
- R-TWR
- RA (1)
- RA (2)
- RA (3)
- RA (4)
- RA (5)
- RAAS
- radar position indicator
- radar position symbol
- rádio-farol não direcional [POR]
- radio altimeter
- rádio altímetro [POR]
- radio direction finding
- radio frequency identification
- radio magnetic indicator
- radiocommunication failure
- radiotelephony
- radius to fix
- RAeS
- RAG
- RAI
- RAIL
- RAIM
- rain
- RAIO
- RAM
- ram air turbine
- rapid exit taxiway
- rapid exit taxiway indicator lights
- RASGPA
- RASS
- RAT
- rate of climb
- rate of descent
- rated output
- rated thrust
- RB
- RBN
- RC
- RCA
- RCAM
- RCC
- RCF
- RCL
- RCLL
- RCLM
- RCLS
- RCO
- RCP
- RCR
- RDF
- RDH
- RDOF
- RE
- reach cruising altitude
- real-time simulation
- receiver autonomous integrity monitoring
- recent rain
- reclearance in flight
- recoverable empty weight
- REDL
- reduced runway separation minima
- reduced vertical separation minimum
- reference chord
- reference datum height
- reference path data selector
- regional accident and incident investigation organization
- regional aviation safety group pan america
- regional office
- regional safety oversight organization
- regional supplementary procedures
- REIL
- rejected take-off distance available, helicopter
- rejected takeoff
- RELs
- remote AFIS
- remote air traffic control towers
- remote altimeter setting source
- remote pilot license
- remote pilot station
- remote tower centre
- remote vision system
- remotely-piloted aircraft system
- remotely piloted aircraft
- remotely piloted aircraft system panel
- RENL
- repetitive flight plan
- report leaving
- report reaching
- request flight plan
- request for proposal
- request level change en route
- request level not available
- request supplementary flight plan
- required communication performance
- required inspection items
- required navigation performance
- required navigation performance authorization required
- RERA
- RESA
- rescue and firefighting
- rescue and firefighting services
- rescue boat
- rescue coordination centre
- rescue sub-centre
- rescue vessel
- resolution advisory
- responder beacon
- rest, ice, compression, elevation of extremity
- RETILs
- return to service
- revenue passenger-kilometres
- revenue tonne-kilometers
- reverberation time
- REW
- RF
- RFF
- RFFS
- RFID
- RFM
- RFP
- RFS
- RHC
- RI
- RI-A
- RI-VAP
- RICE
- RIF
- right-hand circuit
- RII
- risk assessment
- RJ
- RL
- RLCE
- RLLS
- RLNA
- RLOC
- RMI
- RNAV
- RNP
- RNP AR
- RO (1)
- RO (2)
- RO (3)
- ROASS
- ROC (1)
- ROC (2)
- ROD
- ROE
- romeo
- root sum square
- ROTAER
- round the world
- RPA
- RPAS
- RPASP
- RPDS
- RPI
- RPK
- RPKS
- RPL (1)
- RPL (2)
- RPR
- RPS
- RPS (2)
- RQP
- RQS
- RR
- RRSM
- RSA
- RSC
- RSCD
- RSOO
- RSP (1)
- RSP (2)
- RSS
- RT (1)
- RT (2)
- RTC
- RTF
- RTHL
- RTK
- RTO
- RTODAH
- RTS
- RTS (2)
- RTW
- rules of engagement
- runway
- runway alignment indicator
- runway alignment indicator lights
- runway arresting gear
- runway awareness and advisory system
- runway centerline
- runway centre line
- runway centre line lights
- runway condition assessment matrix
- runway condition code
- runway condition report
- runway edge light
- runway end lights
- runway end safety area
- runway entrance lights
- runway excursion
- runway incursion
- runway incursion-animal
- runway incursion-vehicle, aircraft or person
- runway lead-in lighting system
- runway loss of control
- runway overrun alerting and awareness system
- runway overrun awareness and alerting system
- runway safety area
- runway status lights
- runway surface condition
- runway threshold light(s)
- runway touchdown zone lights
- runway visual range
- runway(s) cleared
- RV
- RVR
- RVS
- RVSM
- RVV
- RWS
- RWSL
- RWY
- RWYCC