Order 7110.65P, Air Traffic Control, with changes

2/19/04Pilot/Controller Glossary3. Rollout RVR− The RVR readout valuesobtained from RVR equipment located nearest therollout end of the runway.(See ICAO term FLIGHT VISIBILITY.)(See ICAO term GROUND VISIBILITY.)(See ICAO term RUNWAY VISUAL RANGE.)(See ICAO term VISIBILITY.)VISIBILITY [ICAO]− The ability, as determined byatmospheric conditions and expressed in units ofdistance, to see and identify prominent unlightedobjects by day and prominent lighted objects bynight.a. Flight Visibility−The visibility forward fromthe cockpit of an aircraft in flight.b. Ground Visibility−The visibility at an aerodromeas reported by an accredited observer.c. Runway Visual Range [RVR]−The range overwhich the pilot of an aircraft on the centerline of arunway can see the runway surface markings or thelights delineating the runway or identifying itscenterline.VISUAL APPROACH− An approach conducted onan instrument flight rules (IFR) flight plan whichauthorizes the pilot to proceed visually and clear ofclouds to the airport. The pilot must, at all times, haveeither the airport or the preceding aircraft in sight.This approach must be authorized and under thecontrol of the appropriate air traffic control facility.Reported weather at the airport must be ceiling at orabove 1,000 feet and visibility of 3 miles or greater.(See ICAO term VISUAL APPROACH.)VISUAL APPROACH [ICAO]− An approach by anIFR flight when either part or all of an instrumentapproach procedure is not completed and the approachis executed in visual reference to terrain.VISUAL APPROACH SLOPE INDICATOR−(See AIRPORT LIGHTING.)VISUAL DESCENT POINT− A defined point on thefinal approach course of a nonprecision straight-inapproach procedure from which normal descent fromthe MDA to the runway touchdown point may becommenced, provided the approach threshold of thatrunway, or approach lights, or other markingsidentifiable with the approach end of that runway areclearly visible to the pilot.VISUAL FLIGHT RULES− Rules that govern theprocedures for conducting flight under visualconditions. The term “VFR” is also used in theUnited States to indicate weather conditions that areequal to or greater than minimum VFR requirements.In addition, it is used by pilots and controllers toindicate type of flight plan.(See INSTRUMENT FLIGHT RULES.)(See INSTRUMENT METEOROLOGICALCONDITIONS.)(See VISUAL METEOROLOGICALCONDITIONS.)(Refer to 14 CFR Part 91.)(Refer to AIM.)VISUAL HOLDING− The holding of aircraft atselected, prominent geographical fixes which can beeasily recognized from the air.(See HOLDING FIX.)VISUAL METEOROLOGICAL CONDITIONS−Meteorological conditions expressed in terms ofvisibility, distance from cloud, and ceiling equal to orbetter than specified minima.(See INSTRUMENT FLIGHT RULES.)(See INSTRUMENT METEOROLOGICALCONDITIONS.)(See VISUAL FLIGHT RULES.)VISUAL SEPARATION− A means employed byATC to separate aircraft in terminal areas and en routeairspace in the NAS. There are two ways to effect thisseparation:a. The tower controller sees the aircraft involvedand issues instructions, as necessary, to ensure thatthe aircraft avoid each other.b. A pilot sees the other aircraft involved and uponinstructions from the controller provides his/her ownseparation by maneuvering his/her aircraft as necessaryto avoid it. This may involve following anotheraircraft or keeping it in sight until it is no longer afactor.(See SEE AND AVOID.)(Refer to 14 CFR Part 91.)VLF−(See VERY LOW FREQUENCY.)VMC−(See VISUAL METEOROLOGICALCONDITIONS.)VOICE SWITCHING AND CONTROL SYSTEM−The VSCS is a computer controlled switching systemthat provides air traffic controllers with all voicePCG V−3