

Aviation Terms
| Title | Description |
| R | Romeo |
| Radar | Any of several systems or devices using transmitted and reflected radio waves for detecting a reflecting object, as an aircraft, and determining its direction, distance, height, or speed, or in storm detection, mapping, navigation, etc. |
| Radar Flight Following | Radar service provided by air-traffic control (ATC) that keeps aircraft in positive radar control throughout the entirety of the flight. Radar flight following starts when the pilot requests it, usually at the time of takeoff, to the when pilot cancels it usually at the time of landing. |
| Ramp | The apron or open "tarmac" in front of an FBO or terminal facility. This space is busy, used for deplanement, parking of aircraft, etc. Some facilities will permit automobiles to drive to the aircraft on the ramp, a feature of real benefit to the traveler with heavy or bulky luggage. |
| Ramp Fee | Same as Parking Fee. Cost assessed by an FBO when an aircraft needs to be parked on the ramp for the day or overnight. Many FBOs will waive ramp fees with a minimal amount of fuel purchase. |
| Ramp Weight | The weight of an aircraft at the terminal building when ready for departure. This includes the zero fuel weight and all required fuel. |
| Range | The maximum distance that can be covered by an aircraft with a specified payload before its fuel supply is exhausted. |
| Rate of Climb (RoC) | |
| Repositioning | Ferrying aircraft for departure from other than its base airport. Also applies for return flight. |
| Repositioning Fees | Cost incurred by a charter client when the aircraft they want to fly on must ferry to their desired departure airport from a different airport. |
| Repositioning Time | The travel time for a chartered aircraft from its base airport to the pickup airport. |
| Restricted Airspace | Refers to an area of airspace in which the local controlling authorities have determined that air traffic must be restricted (if not continually prohibited) for safety or security concerns. According to the United States Federal Aviation Administration (FAA): "Restricted areas denote the existence of unusual, often invisible, hazards to aircraft such as artillery firing, aerial gunnery, or guided missiles. Penetration of restricted areas without authorization from the using or controlling agency may be extremely hazardous to the aircraft and its occupants." |
| Roger | A reply to indicate that the speaker has heard and understood the previous message. Not to be confused with "Wilco". Roger does NOT indicate the speaker will comply - that's Wilco's job. |
| Roll | Rotation about an axis aligned with the direction in which the aircraft is flying. This axis is also known as the longitudinal axis. |
| Roll Axis | An imaginary line through an aircraft from nose to tail, passing through its center of gravity. The roll axis is also called the longitudinal axis of the aircraft. |
| Roll Out | The term used to describe a new aircraft exiting the assembly line after final assembly. |
| Rotations | 1- One complete round trip is one rotation- Airport A to Airport B to Airport A. 2- In flight dynamics, the principal rotations are known as pitch, roll, and yaw. The term rotation is also used in aviation to refer to the upward pitch (nose moves up) of an aircraft, particularly when starting the climb after takeoff. |
| Rotorcraft | An aircraft that derives its lift from rotating lifting surfaces (usually called blades). |
| Round Trip | A journey to a given place and back again, usually over the same route. Find aircraft available for your Round Trip on the Transient Aircraft page of JetRequest.com. |
| Rudder | A control surface on fixed-wing aircraft, usually mounted at aft end of the vertical stabilizer, which sticks up (like a dorsal fin). Controls yaw (heading), and is controlled by the pedals. |
| Ruddervator | On an airplane, ruddervators are a single control surface which combine the function of the rudder and elevators in one. They are usually seen on V-tail aircraft. |
| Runway | RWY. A strip of land at an airport on which aircraft can take off and land and forms part of the maneuvering area. Runways may be a man-made surface (often asphalt, concrete, or a mixture of both) or a natural surface (grass, dirt, gravel, ice, or salt). |
| Runway Heading | The magnetic direction that corresponds with the runway centerline extended, not the painted runway number. Runway headings are in increments of ten degrees and no more than two numbers. For example: a runway oriented to the magnetic direction “360” would be named “runway 36”. On the actual runway itself, the numbers 36 would be painted just after the runway threshold to clarify the proper runway heading for approaching and departing planes. |
| RVR | Runway visual range as measured in the touchdown zone area. |







