Aeronautical Terms beginning with V

V1

Takeoff decision speed.

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V2

Takeoff safety speed.

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Va

The design maneuvering speed. The maximum speed at which full, abrupt control movement can be used without overstressing the airframe.

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VASI

Visual Approach Slope Indicator.

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VDP

Visual Descent Point.

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Vfe

The maximum speed with the flaps extended. The upper limit of the white arc.

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VFR

Visual flight rules.

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Vle

Landing gear extended speed. The maximum speed at which an airplane can be safely flown with the landing gear extended.

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Vlo

Landing gear operating speed. The maximum speed for extending or retracting the landing gear if using an airplane equipped with retractable landing gear.

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Vmc

Minimum control airspeed. This is the minimum flight speed at which a light, twin-engine airplane can be satisfactorily controlled when an engine suddenly becomes inoperative and the remaining engine is at takeoff power.

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Vne

The never-exceed speed. Operating above this speed is prohibited since it may result in damage or structural failure. The red line on the airspeed indicator.

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Vno

The maximum structural cruising speed. Do not exceed this speed except in smooth air. The upper limit of the green arc.

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VOR

Very-high frequency Omnidirectional Range.

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VORTAC

A facility consisting of two components, VOR and TACAN, which provides three individual services: VOR azimuth, TACAN azimuth, and TACAN distance (DME) at one site.

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VOT

VOR test facility.

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VSI

Vertical Speed Indicator.

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