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(See SHORT TAKEOFF AND LANDING
AIRCRAFT.)
VERY HIGH FREQUENCY− The frequency band
between 30 and 300 MHz. Portions of this band, 108
to 118 MHz, are used for certain NAVAIDs; 118 to
136 MHz are used for civil air/ground voice communications.
Other frequencies in this band are used for
purposes not related to air traffic control.
VERY HIGH FREQUENCY OMNIDIRECTIONAL
RANGE STATION−
(See VOR.)
VERY LOW FREQUENCY− The frequency band
between 3 and 30 KHz.
VFR−
(See VISUAL FLIGHT RULES.)
VFR AIRCRAFT− An aircraft conducting flight in
accordance with visual flight rules.
(See VISUAL FLIGHT RULES.)
VFR CONDITIONS− Weather conditions equal to
or better than the minimum for flight under visual
flight rules. The term may be used as an ATC
clearance/instruction only when:
a. An IFR aircraft requests a climb/descent in
VFR conditions.
b. The clearance will result in noise abatement
benefits where part of the IFR departure route does
not conform to an FAA approved noise abatement
route or altitude.
c. A pilot has requested a practice instrument
approach and is not on an IFR flight plan.
Note: All pilots receiving this authorization must
comply with the VFR visibility and distance from
cloud criteria in 14 CFR Part 91. Use of the term
does not relieve controllers of their responsibility to
separate aircraft in Class B and Class C airspace
Pilot/Controller Glossary 2/19/04
PCG V−2
or TRSAs as required by FAAO 7110.65. When
used as an ATC clearance/instruction, the term
may be abbreviated “VFR;” e.g., “MAINTAIN
VFR,” “CLIMB/DESCEND VFR,” etc.
VFR FLIGHT−
(See VFR AIRCRAFT.)
VFR MILITARY TRAINING ROUTES− Routes
used by the Department of Defense and associated
Reserve and Air Guard units for the purpose of
conducting low-altitude navigation and tactical training
under VFR below 10,000 feet MSL at airspeeds
in excess of 250 knots IAS.
VFR NOT RECOMMENDED− An advisory provided
by a flight service station to a pilot during a
preflight or inflight weather briefing that flight under
visual flight rules is not recommended. To be given
when the current and/or forecast weather conditions
are at or below VFR minimums. It does not abrogate
the pilot’s authority to make his/her own decision.
VFR-ON-TOP− ATC authorization for an IFR
aircraft to operate in VFR conditions at any appropriate
VFR altitude (as specified in 14 CFR and as
restricted by ATC). A pilot receiving this authorization
must comply with the VFR visibility, distance
from cloud criteria, and the minimum IFR altitudes
specified in 14 CFR Part 91. The use of this term
does not relieve controllers of their responsibility to
separate aircraft in Class B and Class C airspace or
TRSAs as required by FAAO 7110.65.
VFR TERMINAL AREA CHARTS−
(See AERONAUTICAL CHART.)
VFR WAYPOINT−
(See WAYPOINT.)
VHF−
(See VERY HIGH FREQUENCY.)
VHF OMNIDIRECTIONAL RANGE/TACTICAL
AIR NAVIGATION−
(See VORTAC.)
VIDEO MAP− An electronically displayed map on
the radar display that may depict data such as airports,
heliports, runway centerline extensions, hospital
emergency landing areas, NAVAIDs and fixes,
reporting points, airway/route centerlines, boundaries,
handoff points, special use tracks, obstructions,
prominent geographic features, map alignment indicators,
range accuracy marks, minimum vectoring
altitudes.
VISIBILITY− The ability, as determined by atmospheric
conditions and expressed in units of distance,
to see and identify prominent unlighted objects by
day and prominent lighted objects by night. Visibility
is reported as statute miles, hundreds of feet or
meters.
(Refer to 14 CFR Part 91.)
(Refer to AIM.)
a. Flight Visibility− The average forward horizontal
distance, from the cockpit of an aircraft in flight,
at which prominent unlighted objects may be seen
and identified by day and prominent lighted objects
may be seen and identified by night.
b. Ground Visibility− Prevailing horizontal visibility
near the earth’s surface as reported by the
United States National Weather Service or an accredited
observer.
c. Prevailing Visibility− The greatest horizontal
visibility equaled or exceeded throughout at least half
the horizon circle which need not necessarily be
continuous.
d. Runway Visibility Value (RVV)− The visibility
　
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