| 1 | HCL | Helenair Corporation Limited | Callsign: Helencorp, | WL | AVCODES |
| 2 | HCL | Helenair Corporation | | | ICAO1 |
| 3 | HCLB | HIGHTAIL CARRIERS LLC | | | SCAC4 |
| 4 | HCLE | HELVETIA CONTAINER LINE | | | SCAC4 |
| 5 | HCLH | HORIZON COACH LINES LTD | | | SCAC4 |
| 6 | HCLJ | HOMELAND CARRIERS LLC | | | SCAC4 |
| 7 | HCLK | HEDLUND CONTRACTING LTD | | | SCAC4 |
| 8 | HCLL | HANSEATIC CONTAINER LINE LTD | | | SCAC4 |
| 9 | HCLM | HERMANNS CONTRACTING LIMITED | | | SCAC4 |
| 10 | HCLOG | HEICON Service GmbH | | DE | VKM |
| 11 | HCLQ | HIGH CUBE LLC | | | SCAC4 |
| 12 | HCLR | HILLTOP RANCH INC | | | SCAC4 |
| 13 | HCLS | HIDRA CONTROL | | | SCAC4 |
| 14 | HCLT | HORNOI, C L TRUCKING | | | SCAC4 |
| 15 | HCLV | HAVI CONTAINER LINE LIMITED | | | SCAC4 |
| 16 | HCLX | Basell Canada Inc. | added 1/2001; 7/2005; eliminated 1/2009 | | NAKINA |
| 17 | HCLX | Montell Canada Inc. | added 4/1996; 7/2000; eliminated 1/2001 | | NAKINA |
| 18 | HCLX | HIMONT Canada Inc. | added 1/1984; 1/1994; eliminated 4/1996 | | NAKINA |
| 19 | HCLX | Hercules Canada Ltd. | added 4/1979; 1/1980; eliminated 1/1984 | | NAKINA |
| 20 | HCLX | Hercules Canada Ltd. | added 4/79; 1/80 | | NRHS |
| 21 | HCLX | HIMONT Canada Inc. | 1/94; eliminated 4/96 | | NRHS |
| 22 | HCLX | Montell Canada Inc. | added 4/96; 7/2000; eliminated 1/2001 | | NRHS |
| 23 | HCLX | Basell Canada Inc. | added 1/2001 | | NRHS |
| 24 | HCLX | BASSEL CANADA, INC. [MONTELL CANADA INC.HIMONT CANADA, INC.; HERCULES CANADA LTD.] | | | PWRC |
| 25 | HCLX | HIMONT Canada (Basell Canada) | | | RSRV |
| 26 | HCLX | BASELL CANADA INC | | | SCAC4 |
| 27 | HCLY | HECO LIMITED | | | SCAC4 |
