Cargo Airlines
5C
Camai Air
R9
Cambodian Int’l Airlines
XE
Cameroon Airlines
UY
Canada 3000
2T
Canadian Airlines Int’l
CP
Canarias Regional Air
FW
Cape Air
9K
Cape Smythe Air Service
6C
Cape York Air
NS
Capital Cargo International Airlines
PT
Cardinal Airlines
NN
Carib Aviation
K7
Casino Express
XP
Cathay Pacific Airways
CX
Cayman Airways
KX
Cebu Pacific Air
5J
Central Mountain Air
9M
Centralafrican Airlines
GC
Chalk’s International Airline
OP
Challenge Air Cargo
WE
Champion Air
MG
Channel Express
LS
Chelal – Chelyabinsk Air Enterprise
H6
Chicago Express Airwasy (ATA Connection)
C8
China Airlines
CI
China Eastern Airlines
MU
China National Aviation Corporation
F6
China Northern Airlines
CJ
China Northwest Airlines
WH
China Southern Airlines
CZ
China Southwest Airlines
SZ
China Xinjiang Airlines
XO
China Yunnan Airlines
3Q
Chitaavia
X7
Cimber Air
QI
Circle Air Freight
FO
Cirrus Airlines
C9
City Bird Airlines
H2
Cityjet
WX
Coast Air
BX
Coastal Air Transport
DQ
Colgan Air
9L
Columbia Pacific Airlines
7C
Comair
MN
Comair/Delta Connection
OH
Compagnie Corse Mediterranee
XK
Condor
DE
Congo Airlines – CAL
EO
Constellation International Airlines
CQ
Continental Airlines
CO
Continental Micronesia
CS
COPA Panama
CM
Corporate Airlines
3C
Corsair
SS
Cosmos Air
ZE
Country Connection Airlines
XL
Crimea Air
OR
Croatia Airlines
OU
Cronus Airlines
X5
Crossair
LX
Crossair Europe
QE
Cubana
CU
Cyprus Airways
CY
Czechoslovak Airlines
OK