R

R
R	Radius
R	Rankine
R	Red
R	Resistor
R	Right
R	Yaw Rate
R&D	Research and Development
R/AD	Retro/Adaptation Drawing
R/C	Rate of Climb
R/D	Rate of Descent
R/H	Radar Height
R/hr	Roentgens per Hour
R/I	Radio/Inertial
R/I	Removal/Installation
R/L	Reading Light
r/min	Revolutions per Minute
R/T	Radio Transmit
R/T	Receiver Transmitter Unit
RA	Radio Altimeter, Radio Altitude
RA	Redundancy Assurance
RA	Resolution Advisory
RAAS	Runway Awareness and Advisory System
RAC	Rotor Active Clearance
RAC	Rules of the Air and Air Traffic Control
RACA	Ram Air Channel Actuator
RACC	Rotor Active Clearance Control
RACON	Radar Beacon
RACSB	Rotor Active Clearance Start Bleed
RAD	Radio
RAD	Roll Anticipation Distance
RADCON	Radar Data Converter
RADIUS	Remote Authentication Dial-In User Service
RadM	Radioactive Material
RADVR	Random Access Digital Video Reproducer
RAI	Ram Air Inlet
RAIL	Runway Alignment Indicator Light System
RAIMS	Radio and Audio Integrating Management System
RALS	Recording and Aircraft Locating System
RALTU	Reprogrammable Annunciator Light Test Unit
RAM	Random Access Memory
RAO	Ram Air Outlet
RAPCON	Radar Approach Control
RAT	Ram Air Temperature
RAT	Ram Air Turbine
RATC	Remote Air Traffic Control
RAX	Random Access Transfer Memory
RB	Resource BITE
RBA	Right Bottom Aft
RBCU	Remote Braking Control Unit
RBF	Right Bottom Forward
RBN	Radio Beacon
RBP	Right Bottom Plug
RBPU	Rudder and Brake Pedal Unit
RC	Reference Chord
RC	Repetitive Chime
RCC	Remote Charge Converter
RCC	Remote Control Center
RCCB	Remote Control Circuit Breaker
RCCBM	RCCB Module
RCCU	Remote Calibration Control Unit
RCD	RAAS Configuration DataBase
RCDG	Recording
RCDR	Recorder
RCF	Right Center Fuselage
RCL	Recall
RCLM	Runway Center Line Marking
RCLS	Runway Center Line Light System
RCP	Reverse Current Protection
RCPT	Receptacle
RCPTN	Reception
RCS	Radio Communication System
RCT	Rear Center Tank
RCVR	Receiver
RCVY	Recovery
RCZ	Rear Core Zone
RD	Retro Drawing
RD	Right Display
RDC	Remote Data Concentrator
RDDMI	Radio Dual Distance Magnetic Indicator
RDL	Resident Data Loader
RDNG	Reading
RDU	Receiver Decoder Unit
RDY	Ready
READG	Reading
RECIRC	Recirculate, Recirculation
RECN	Repair Engineering Change Note
RECOG	Recognition
RECONF	Reconfiguration
RECT	Rectifier
RED	Reduction
REDCR	Reducer
REDUND	Redundancy
REF ALIGN	Reference Alignment
REF	Reference
REFLNG	Refueling
REFR	Refrigerator
REFUEL	Refueling
REG	Register
REG	Regulator
REGUL	Regulation
REIC	Reconfigurable ETOPS Isolation Contactor
REIL	Runway End Identification Lights
REL	Release
REL	Reluctance
REM	Representative Model
rem/hr	Rems per Hour
REP	Reporting Point
REP	Repository
REPL	BY Replaced by
RES	Resistance
RET	Retract
RET	Return
RETR	Retract
RETRD	Retracted
RETRG	Retracting
RETRN	Retraction
REV	Revise, Revision
REV	Reverse
REW	Recoverable Empty Weight
RF	Radio Frequency
RFC	Request for Change
RFI	Radio Frequency Interference
RFI	Request for Information
RFID	Radio Frequency Identification
RFP	Request for Proposal
RFS	Reason for Selection
RFS	Regardless of Feature Size
RFU	Radio Frequency Unit
RFW	Request for Work
RGAU	Rate Gyro and Accelerometer Unit
RGLRD	Regulated
RGLTG	Regulating
RGLTN	Regulation
RGTR	Register
RH	Right Hand
RHEO	Rheostat
RHL	Rudder Hinge Line
RIDN	Rear Inner Discharge Nozzle
RIU	Recorder Interface Unit
RJB	Radio Junction Box
RK	Rack
RLA	Reverser Lever Angle
RLD	Required Landing Distance
RLF	Relief
RLG	Ring Laser Gyro
R-LMF	Right Side Local Maintenance Function
RLS	Remote Light Sensor
RLS	Right Line Select Key
RLSED	Released
RLTD	Related
RLY	Relay
RM	Radio Magnetic
RMCU	Remote Magnetic Compensation Unit
RMI	Radio Magnetic Indicator
RMO	Request for Modification Order
RMO	Retrofit Modification Offer
RMO	Retrofit Modification Order
RMP	Radio and Audio Management Panel
RMP	Radio Management Panel
RMP	Right Middle Plug
RMS	Reference Manufacturing Shop
RMS	Root Mean Square
RMT	Remote
RMU	Radio Management Unit
RNAV	Area Navigation
RNG	Range
RNI	Radio Navigation Indicator
RNLG	Reinforced Nose Landing Gear
RNP	Required Navigation Performance
RODN	Rear Outer Discharge Nozzle
ROLR	Roller
ROLS	Remote Oil Level Sensor
ROM	Read Only Memory
R-OMS	Right Side Onboard Maintenance System
ROP	Runway Overrun Protection
ROPS	Runway Overrun Prevention System
ROT	Runway Occupancy Time
ROTG	Rotating
ROW	Runway end Overrun Warning
RPCU	Reservoir Pressurization Control Unit
RPCU	Residual Pressure Control Unit
RPDR	Reproducer
RPF	Reporting Processing Function
RPG	Report Program General
RPLNT	Repellent
RPM	Revolution per Minute
RPSA	Rotating Pressure Sensing Assembly
RPTG	Repeating
RPTR	Repeater
RPU	Receiver Processor Unit
RQ	Recommended Quantity
RQRD	Required
RR	Low or Medium Range Frequency Radio Range Station
RR	Rolls Royce
RR	Rudder Rib
RRU	Recorder Release Unit
RS	Rear Spar
RS	Repeating Stroke
RSA	Request for Service Allowance
RSC	Removable Structural Component
RSM	Removable SIM Module
RSP	Responder Beacon
RSR	Route Surveillance Radar
RSS	Receiver Surveillance System
RSS	Root Sum Square
RST	Reset
RSU	Raster Shading Unit
RSV	Reserve
RSVR	Reservoir
RT	Risk Time
RTA	Receiver Transmitter ARINC
RTA	Required Time of Arrival
RTA	Right Top Aft
RTBC	Refuel and Towing on Battery Contactor
RTC	Real Time Clock
RTC	Return To Cabin
RTCA	Radio Technical Commission for Aeronautics
RTE	Route
RTF	Radio Telephony
RTF	Right Top Forward
RTG	Rating
RTK	Revenue Tonne Kilometre
RTL	Rudder Travel Limiting
RTM	Real Time Monitoring
RTN	Return
RTNC	Refuel and Towing on Normal Contactor
RTNR	Retainer
RTO	Rejected Takeoff
RTOK	RE-TEST OK
RTOLW	Regulatory TakeOff and Landing Weight
RTOLW	Runway Takeoff and Landing Weight
RTOW	Regulatory TakeOff Weight
RTOW	Runway Takeoff Weight
RTP	Right Top Plug
RTR	Router
RTRSW	Rotary Switch
RTRY	Rotary
RTS	Return to Seat
RTT	Return To Tank
RTU	Radar Transceiver Unit
RTU	Rate of Turn Unit
RUD	Rudder
RVCP	Remote Video Control Panel
RVDT	Rotary Variable Differential Transducer
RVR	Runway Visual Range
RVS	Reverse
RVSM	Reduced Vertical Separation Minimum
RVSN	Reversion
RVT	Rivet
RVT	Rotary Variable Transformer
RW	Right Wing
RWDS	Rearwards
RWK	Rework
RWY	Runway
RX	Receive
RZ	Return to Zero