|
Definition
|
Contraction
|
Usage
|
|
calibration
|
CLBR
|
GEN
|
|
calibration
performance monitoring equipment
|
CPME
|
ATC
|
|
Call sign
|
CS
|
ICAO
|
|
Calling
|
CLG
|
ICAO
|
|
Canada
|
CAN
|
NWS
|
|
Canadian
|
CNDN
|
NWS
|
|
Canadian
Airspace Reservation Unit
|
CARU
|
GEN
|
|
Canadian
Armed Force
|
CANFORCE
|
GEN
|
|
Canadian
Armed Forces Transport Command
|
CAM
|
GEN
|
|
Canadian
Forces Air Defense Command
|
CFADC
|
GEN
|
|
Canadian
NORAD Region
|
CANR
|
GEN
|
|
Canadian
NOTAM
|
CANOT
|
GEN
|
|
cancel
|
CNCL
|
NWS
|
|
cancel
|
CNL
|
GEN
|
|
cancel
approved arrival
|
CXA
|
ATC
|
|
cancel
approved departure
|
CXD
|
ATC
|
|
cancel
flight plan
|
CNLFP
|
ATC
|
|
cancel IFR
clearance previously given
|
CIFR
|
ATC
|
|
cancel IFR
flight plan
|
CIFP
|
ATC
|
|
cancel VFR
flight plan
|
CVFP
|
ATC
|
|
candela
|
CD
|
ICAO
|
|
capable
|
CPBL
|
GEN
|
|
capacity
|
CPTY
|
GEN
|
|
captain
|
CAPT
|
GEN
|
|
carbon
copy
|
CC
|
GEN
|
|
Caribbean
|
CARIB
|
NWS
|
|
carryover
from previous log
|
CFPL
|
ATC
|
|
cascades
|
CASCDS
|
NWS
|
|
catalogue
number
|
CANO
|
GEN
|
|
category
|
CAT
|
GEN
|
|
category
|
CTGY
|
NWS
|
|
cathode
ray tube
|
CRT
|
GEN
|
|
Catskills
|
CTSKLS
|
NWS
|
|
caution
|
CTN
|
GEN
|
|
caution
advised until further notice
|
CAUFN
|
GEN
|
|
ceiling
|
CIG
|
NWS
|
|
celestial
|
CLST
|
ATC
|
|
celestial
navigation
|
CELNAV
|
GEN
|
|
celsius
|
C
|
GEN
|
|
center
|
CNTR
|
GEN
|
|
center
clearance delivered
|
B
|
ATC
|
|
centerline
|
CNTRLN
|
GEN
|
|
centimeter
|
CM
|
ICAO
|
|
central
|
CNTRL
|
GEN
|
|
central
altitude reservation function
|
CARF
|
GEN
|
|
Central
Computer Complex
|
CCC
|
GEN
|
|
central
flow weather service unit
|
CFWSU
|
GEN
|
|
Central
North Pacific
|
CENPAC
|
ATC
|
|
Central
Region, FAA
|
ACE
|
GEN
|
|
Central
Standard Time (time groups only)
|
C
|
NWS
|
|
central
weather service unit
|
CWSU
|
GEN
|
|
centre
(runway ID)
|
C
|
ICAO
|
|
centre
line
|
CL
|
ICAO
|
|
certificate
|
CERT
|
GEN
|
|
certification
|
CERTIF
|
GEN
|
|
certify
|
CRTFY
|
GEN
|
|
chance
|
CHC
|
NWS
|
|
change
|
CHG
|
GEN
|
|
change
frequency to
|
CF
|
ICAO
|
|
change of
appointing office
|
CAO
|
GEN
|
|
change to
approach control or changing to approach control
|
CAC
|
ATC
|
|
change to
center control or changing to center control
|
CTCC
|
ATC
|
|
change
weight manifest
|
CWM
|
GEN
|
|
changeover
|
CHOV
|
ATC
|
|
changeover
point
|
COP
|
GEN
|
|
changing
over
|
CHGO
|
ATC
|
|
channel
|
CH
|
ICAO
|
|
channel
|
CHNL
|
GEN
|
|
chapter
|
CHAP
|
GEN
|
|
characteristic
|
CHARC
|
GEN
|
|
charge
|
CHRG
|
GEN
|
|
charter
|
CHTR
|
GEN
|
|
check
|
CK
|
ICAO
|
|
check area
airports
|
CARA
|
GEN
|
|
check okay
|
CHOK
|
GEN
|
|
chemicals
|
CHM
|
GEN
|
|
Chesapeake
|
CHSPK
|
NWS
|
|
chief
controller
|
CCTLR
|
GEN
|
|
Chief,
Airport District Office
|
CADO
|
GEN
|
|
circle
|
CRC
|
GEN
|
|
circling
(approach and landing charts)
|
C
|
ATC
|
|
circling
guidance light
|
CGL
|
ICAO
|
|
circuit
|
CKT
|
GEN
|
|
circuit
line up
|
CLU
|
GEN
|
|
circuit
notice
|
CIRNOT
|
GEN
|
|
circular
polarization
|
CP
|
GEN
|
|
circulate
|
CRLC
|
GEN
|
|
circumnavigate
|
CIRNAV
|
ATC
|
|
cirrocumulus
|
CC
|
NWS
|
|
cirrostratus
|
CS
|
NWS
|
|
cirrus
|
CI
|
NWS
|
|
City (or
County) Civil Defense Director at____
|
CCD
|
GEN
|
|
|