| 6401 | CHEC | CHEMICAL EXPRESS CARRIERS INC | | | SCAC3 |
| 6402 | CHED | CHERRY HILL TRANSIT, A CORPORATION | | | SCAC3 |
| 6403 | CHEE | CHEETAH TRANSPORT LTD | | | SCAC4 |
| 6404 | CHEG | CHEMICAL EXPLORER INC, | | | SCAC3 |
| 6405 | CHEG | COUNTRY HERBS | | | SCAC4 |
| 6406 | CHEH | CHEETAH TRANS | | | SCAC4 |
| 6407 | CHEI | CHEROKEE TRANSPORT | | | SCAC3 |
| 6408 | CHEJ | CX ROBERSON, INC | | | SCAC3 |
| 6409 | CHEJ | CHEYENNE EXPRESS INC | | | SCAC4 |
| 6410 | CHEK | CHESAPEAK | | | SCAC4 |
| 6411 | CHEL | CHEMLINE INC | | | SCAC3 |
| 6412 | CHEL | CHEM-ECOL LTD | | | SCAC4 |
| 6413 | CHELY | | City: Chelyabinsk | RUS | TRAFFIC |
| 6414 | CHEM | OIL CORPORATION | | | SCAC3 |
| 6415 | CHEM | Chemion Logistik GmbH | | D | TRAFFIC |
| 6416 | CHEMNITZ | Stadt Chemnitz | | D | TRAFFIC |
| 6417 | CHEMS | Chems, a.s. Humenné | | SK | VKM |
| 6418 | CHEMUNG | Chemung County Transit | | UAE | TRAFFIC |
| 6419 | CHEO | CHESHIRE OIL COMPANY INC | | | SCAC4 |
| 6420 | CHEP | CHIPPER EXPRESS INC | | | SCAC3 |
| 6421 | CHEP | CHIPPER EXPRESS INC | | | SCAC4 |
| 6422 | CHEQ | CHANTLER TRANSPORT | | | SCAC4 |
| 6423 | CHER | CHERRY HILL HARDWOODS INC | | | SCAC4 |
| 6424 | CHES | C H EXPRESS INC | | | SCAC4 |
| 6425 | CHEST | Chestnut Hill | | USA | TRAFFIC |
| 6426 | CHET | CHEMICAL TRANSPORT SERVICES INC | | | SCAC3 |
| 6427 | CHET | CHEVAL TRANSPORT LTD | | | SCAC4 |
| 6428 | CHEU | LLC CHEMRESURS | | RUS | BIC |
| 6429 | CHEU | CHEVRON OIL | | | SCAC3 |
| 6430 | CHEU | CHEVRON ORONITE PTE LTD | | | SCAC4 |
| 6431 | CHEV | Chevrolet | | USA | TRAFFIC |
| 6432 | CHEVY | Chevrolet | | USA | TRAFFIC |
| 6433 | CHEX | Equistar Chemicals, LP | added 4/1998; 7/2000-7/2005 | | NAKINA |
| 6434 | CHEX | Quantum Chemical Corporation, USI Division | added 7/1988; 1/1994; eliminated 4/1998 | | NAKINA |
| 6435 | CHEX | USI Chemicals Co., Division of National Distillers & Chemical Corp. | added 7/1987; eliminated 7/1988 | | NAKINA |
| 6436 | CHEX | U.S. Industrial Chemicals Co., Division of National Distillers and Chemical Corp. | eliminated 7/1987 | | NAKINA |
| 6437 | CHEX | USI Chemicals Co., Inc. | added 4/1987 | | NAKINA |
| 6438 | CHEX | Enron Chemical Co. | added 10/1986; eliminated 4/1987 | | NAKINA |
| 6439 | CHEX | NORCHEM, Inc. | added 1/1986; eliminated 10/1986 | | NAKINA |
| 6440 | CHEX | NORCHEM | added 7/1985; eliminated 1/1986 | | NAKINA |
| 6441 | CHEX | Northern Petrochemical Co. | added 4/1985; eliminated 7/1985 | | NAKINA |
| 6442 | CHEX | Chemplex Co. | added 10/1967; 4/1970-1/1980; eliminated 4/1985 | | NAKINA |
| 6443 | CHEX | Chemplex Co. | added 10/67; 4/70-1/80; eliminated 4/85 | | NRHS |
| 6444 | CHEX | Northern Petrochemical Co. | added 4/85 | | NRHS |
| 6445 | CHEX | NORCHEM | eliminated 1/86 | | NRHS |
| 6446 | CHEX | NORCHEM, Inc. | added 1/86; eliminated 10/86 | | NRHS |
| 6447 | CHEX | Enron Chemical Co. | added 10/86; eliminated 4/87 | | NRHS |
| 6448 | CHEX | USI Chemicals Co., Inc. | added 4/87 | | NRHS |
| 6449 | CHEX | U.S. Industrial Chemicals Co., Division of National Distillers and Chemical Corp. | eliminated 7/87 | | NRHS |
| 6450 | CHEX | USI Chemicals Co., Division of National Distillers & Chemical Corp. | added 7/87; eliminated 7/88 | | NRHS |
| 6451 | CHEX | Quantum Chemical Corporation, USI Division | added 7/88; 1/94; eliminated 4/98 | | NRHS |
| 6452 | CHEX | Equistar Chemicals, LP | added 4/98; 7/2000 | | NRHS |
| 6453 | CHEX | EQUISTAR CHEMICALS [(USIX) QUANTUM CHEMICAL CORPORATION, USI DIVISION; CHEMPLEX CO.; ENRON; NORCHEM; AND OTHER PREDECESSOR COMPANIES] | | | PWRC |
| 6454 | CHEX | Chemplex (Equistar Chemicals) | | | RSRV |
| 6455 | CHEX | EQUISTAR CHEMICALS LP | | | SCAC4 |
| 6456 | CHEY | CHEETAH TRANSPORTATION SYSTEMS INC | | | SCAC4 |
| 6457 | CHEZ | CEDAR HEIGHTS CLAY COMPANY | | | PWRC |
| 6458 | CHF | Tianjin Jeppesen International Flight College Co. Ltd. | Callsign: Chao Fei, | PRC | AVCODES |
| 6459 | CHF | Joint Stock Company Chitaavia | IATA: X7, Callsign: Chita, Designator X7 recalled by IATA | RUS | AVCODES |
| 6460 | CHF | Chitaavia | IATA: X7 | | ICAO1 |
| 6461 | CHFA | CHIEF TRANSFER & STORAGE INC | | | SCAC3 |
| 6462 | CHFB | CHIEFTON VAN LINES INC | | | SCAC3 |
| 6463 | CHFB | CHIEFTAIN VAN LINES INC | | | SCAC4 |
| 6464 | CHFD | CHIPPEWA FREIGHT LINES INC | | | SCAC3 |
| 6465 | CHFE | CHAFFEE, ROBERT DENVER | | | SCAC3 |
| 6466 | CHFE | CHALEUR FERTILIZERS LTD | | | SCAC4 |
| 6467 | CHFF | COUNTRY HEIR FARMS TRUCKING | | | SCAC3 |
| 6468 | CHFH | CHINOOK FREIGHT SYSTEMS INC | | | SCAC3 |
| 6469 | CHFI | CHESTNUT FLEET RENTAL | | | SCAC3 |
| 6470 | CHFJ | CARL HANLINE TRANSPORTING INC | | | SCAC4 |
| 6471 | CHFK | CHAVIRA, FRANK G | | | SCAC3 |
| 6472 | CHFK | CORAL SHIPMANAGEMENT SA OF PANAMA | | | SCAC4 |
| 6473 | CHFM | CAHOKIA FLOUR COMPANY | | | SCAC3 |
| 6474 | CHFM | CHASE FREIGHT SYSTEMS INC | | | SCAC4 |
| 6475 | CHFO | CHANTILLY FREIGHT CORP | | | SCAC3 |
| 6476 | CHFO | CHIEF OIL DISTRIBUTING CO INC | | | SCAC4 |
| 6477 | CHFP | CHALFONT SHIPPING CORPORATION, | | | SCAC3 |
| 6478 | CHFP | COUNTY HERITAGE FOREST PRODUCTS LTD | | | SCAC4 |
| 6479 | CHFQ | CHATHAM TRANSFER CO | | | SCAC3 |
| 6480 | CHFQ | CHULETAS TRUCKING | | | SCAC4 |
| 6481 | CHFS | CHESAPEAKE FISH CO INC | | | SCAC4 |
| 6482 | CHFT | CARGOZONE HARBOR TRANS INC | | | SCAC4 |
| 6483 | CHFU | {OJSC "EFREMOV SYNTHETIC RUBBER ENT."};ZIPCODE=301840 | | RUS | BIC |
| 6484 | CHFU | CHALLENGE INTERNATIONAL | | | PWRC |
| 6485 | CHFU | Challenge International | | | RSRV |
| 6486 | CHFV | CHAUFFEURED VEHICLE TRANSPORTS INC | | | SCAC3 |
| 6487 | CHFW | COX, H F INC | | | SCAC3 |
| 6488 | CHFW | COX, H F INC | | | SCAC4 |
| 6489 | CHFY | CHIEF FREIGHTWAYS, INC | | | SCAC3 |
| 6490 | CHFY | CHIEF FREIGHTWAYS INC | | | SCAC4 |
| 6491 | CHFZ | COAL HANDLE FACILITY | | | PWRC |
| 6492 | CHG | ChallengAir | | B | AVCODES |
| 6493 | CHG | ChallengAir | IATA: 1I, Callsign: Belgochallenge, | B | AVCODES |
| 6494 | CHG | AC Challenge Aero LLC | IATA: 5U, Callsign: Skychallenger, Designator 5U recalled by IATA | UA | AVCODES |
| 6495 | CHG | Challenge Airlines (BE) S.A. | IATA: X7, Callsign: Challenge, IATA Prefix: 744, ICAO Designator changed from FRH. Name changed from ACE Belgium Freighters S.A. | B | AVCODES |
| 6496 | CHG | AC Challenge Aero | | | ICAO1 |
| 6497 | CHGA | CHICAGO TRANSIT AUTHORITY | | | SCAC3 |
| 6498 | CHGC | CAHILL GRAIN COMPANY | | | SCAC3 |
| 6499 | CHGD | CHICAGO DISTRIBUTION COMPANY L P | | | SCAC3 |
| 6500 | CHGD | CHICAGO DISTRIBUTION COMPANY L P | | | SCAC4 |
