Flight time

Duration as measured by some clock. Atomic clocks give the most accurate measure of time. Less regular timekeepers are those based on the rotation of the earth and other bodies of ...

time

Telecommunications; General telecom

An epoch, i.e., the designation of an instant on a selected time scale, astronomical or atomic. It is used in the sense of time of day 2. On a time scale, the interval between two ...

time

Photography; Professional photography

A type of manual exposure which requires an optional remote control. The shutter can be kept open for up to 30 minutes without keeping the shutter-release button pressed.

time

Dance; Choreography

The rate of speed and rhythm used from the beginning to the end of a dance.

VFR terminal area chart

Aviation; Air traffic control; Airport

An aeronautical chart (using a scale of 1:250 000) that depicts terminal control area (TCA) airspace, which provides for the control or segregation of all aircraft within the TCA. ...

urgent PIREP

Aviation; Air traffic control; Airport

(a) volcanic ash; (b) tornadoes, funnel clouds, waterspouts; (c) severe turbulence; (d) severe icing; (e) hail; (f) low-level wind shear; and (g) any other reported weather ...

VFR holding procedure

Aviation; Air traffic control; Airport

The holding of aircraft in an orbital path around selected prominent geographical locations that can be easily recognized from the air.

visual flight rules (VFR) aircraft

Aviation; Air traffic control; Airport

An aircraft operated in accordance with visual flight rules (VFR).

visual flight rules (VFR) control service

Aviation; Air traffic control; Airport

A service provided by ATC units including: (a) tower control; and (b) ground control.

very high frequency (VHF) direction-finding service

Aviation; Air traffic control; Airport

A service by which directional assistance is provided to VFR aircraft, as described in the "Communications" (COM) and "Rules of the Air and Air Traffic Services" (RAC) sections of ...