| 1 | HCS | Helicharter Wales Ltd | Callsign: Heliwales, | GB | AVCODES |
| 2 | HCSB | HOLY CITY SOLUTIONS LLC | | | SCAC4 |
| 3 | HCSK | HILLCREST TRUCKING & STORAGE INC | | | SCAC4 |
| 4 | HCST | H COLD STORAGE | | | SCAC4 |
| 5 | HCSU | HACON CONTAINERS B.V | | NL | BIC |
| 6 | HCSU | HACON CONTAINERS BV | | | SCAC4 |
| 7 | HCSX | Helm Chesapeake Limited Partnership | added 10/2001; 7/2005 | | NAKINA |
| 8 | HCSX | HELM CHESAPEAKE, LP | | | PWRC |
| 9 | HCSX | Helm Chesapeake | | | RSRV |
| 10 | HCSX | HELM CHESAPEAKE LIMITED PARTNERSHIP | | | SCAC4 |
| 11 | HCSX | Helm Chesapeake Limited Partnership | | USA | TRAFFIC |
| 12 | HCSY | HS CARMEN SHIPPING COMPANY LTD | | | SCAC4 |
