. abbreviation: CARF
Central Flow Control Function U.S.: Unit that is responsible for coordination and approval of all major intercenter flow control restrictions on a system basis in order to obtain maximum utilization of the airspace.
. abbreviation: CFCF
centreline fix Other expression for: final approach course fix (FACF)
CFCF U.S.: Abbreviation for: Central Flow Control Function
CFIT Abbreviation for: controlled flight into terrain Fr: CFIT
CFS
Abbreviation for: Canada Flight Supplement
Fr: CFS
CH Abbreviation for: channel Fr: CH
chaff Radar confusion reflectors, which consist of thin, narrow metallic strips of various lengths and frequency responses, used to reflect echoes for confusion purposes. Fr: plaquettes de brouillage
“Chaff burst” An expression used in radiocommunication to inform ATC of chaff drops at intervals short enough to appear on radar displays as an individual target. Fr: . Chaff burst .
change-over point A point along the route or airway segment between two adjacent navigation facilities where the change-over in navigation guidance should occur.
.
abbreviation: COP
.
also called: navigation change-over point
Fr: point de changement
channel
A single means of direct fixed-service communication between two points.
. abbreviation: CH
Fr: canal
charted visual approach An approach wherein a radar-controlled aircraft on an IFR flight plan (FP), operating in VFR conditions and having an ATC authorization, may proceed to the airport of intended landing via visual landmarks and altitudes depicted on a published visual approach chart.
. abbreviation: CVA
Fr: approche visuelle publiée
charted visual flight procedure approach U.S.: Expression for: charted visual approach (CVA)
. abbreviation: CVFP
chase Other expression for: chase aircraft
chase aircraft An aircraft flown in proximity to another aircraft, normally to observe its performance during training or testing.
. also called: chase
Fr: aéronef d’observation
circling minimums
The minimum descent altitude (MDA) and visibility required for the circling procedure.
Fr: minimums d’approche indirecte
circuit
(1) A communication system that includes all the direct system channels between two points.
Fr: circuit
(2) Other expression for: aerodrome traffic circuit
CIRVIS A plan developed for the reporting of vital intelligence sightings to extend the early-warning coverage of the North American continent. Note: This term is derived from the words “Communication Instructions for Reporting Vital Intelligence Sightings.” Fr: CIRVIS
Class A, B, C, D, E, F or G airspace
. see: airspace classification
Fr: espace aérien de classe A, B, C, D, E, F ou G
clear air turbulence Turbulence encountered in air where no clouds are present. This expression is commonly applied to high-level turbulence associated with wind shear (WS). CAT is often encountered in the vicinity of the jet stream.
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