Pilot/Controller Glossary 

11/3/22 

constant altitude and should not be confused with a 
cruise clearance. 

(See ALTITUDE.) 
(See ICAO term CRUISING LEVEL.) 

CRUISING LEVEL

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(See CRUISING ALTITUDE.) 

CRUISING LEVEL [ICAO]

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 A level maintained 

during a significant portion of a flight. 

CSP

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(See CONSTRAINT SATISFACTION POINT) 

CT MESSAGE

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 An EDCT time generated by the 

ATCSCC to regulate traffic at arrival airports. 
Normally, a CT message is automatically transferred 
from the traffic management system computer to the 
NAS en route computer and appears as an EDCT. In 
the event of a communication failure between the 
traffic management system computer and the NAS, 
the CT message can be manually entered by the TMC 
at the en route facility. 

CTA

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(See CONTROLLED TIME OF ARRIVAL.) 
(See ICAO term CONTROL AREA.) 

CTAF

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(See COMMON TRAFFIC ADVISORY 

FREQUENCY.) 

CTOP

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(See COLLABORATIVE TRAJECTORY 

OPTIONS PROGRAM) 

CTRD

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(See CERTIFIED TOWER RADAR DISPLAY.) 

CURRENT FLIGHT PLAN [ICAO]

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 The flight 

plan, including changes, if any, brought about by 
subsequent clearances. 

CURRENT PLAN

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 The ATC clearance the aircraft 

has received and is expected to fly. 

CVFP APPROACH

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(See CHARTED VISUAL FLIGHT PROCEDURE 

APPROACH.) 

CWA

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(See CENTER WEATHER ADVISORY and 

WEATHER ADVISORY.) 

CWT

−

 

(See 

CONSOLIDATED WAKE 

TURBULENCE.

) 

PCG C

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