| 1 | HSA | East African Safari Air Limited | IATA: RX, Callsign: Car Hire, IATA designator changed to S9. Name changed from CHS Aviation Limited | EAK | AVCODES |
| 2 | HSA | CHS Aviation Limited | Callsign: Car Hire, Name changed to East African Safari Air Limited | EAK | AVCODES |
| 3 | HSA | East African Safari Air Limited | IATA: S9, Callsign: Car Hire, IATA Prefix: 895, ICAO Callsign changed to Duma. IATA designator changed from RX*. Name changed from CHS Aviation Limited | EAK | AVCODES |
| 4 | HSA | East African Safari Air Limited | IATA: S9, Callsign: Duma, IATA Prefix: 895, Ceased operations. ICAO Callsign changed from Car Hire. IATA designator changed from RX*. Name changed from CHS Aviation Limited | EAK | AVCODES |
| 5 | HSA | East African Safari Air | IATA: S9 | | ICAO1 |
| 6 | HSA | High Speed Alliance | | NL | VKM |
| 7 | HSAA | HOADE, STEVE TRUCKING INC | | | SCAC4 |
| 8 | HSAD | H & S TRUCKING INC | | | SCAC4 |
| 9 | HSAF | HI SPEED TRUCKING INC | | | SCAC4 |
| 10 | HSAG | HIGH SIERRA TRANSPORT | | | SCAC4 |
| 11 | HSAG | Heilbronner Strassenbahn AG | City: Heilbronn | D | TRAFFIC |
| 12 | HSAI | HUDON, DAN SALES INC | | | SCAC4 |
| 13 | HSAJ | HOOSIER SPECIALIZED TRANSPORTATION | | | SCAC4 |
| 14 | HSAK | HARVEST SELECT CATFISH | | | SCAC4 |
| 15 | HSAL | HENSALL GLOBAL LOGISTICS INC | | | SCAC4 |
| 16 | HSAM | HILL, SAM OIL CO | | | SCAC4 |
| 17 | HSAO | HUSTON, SAM TRUCKING | | | SCAC4 |
| 18 | HSAR | HOOSIER AIR TRANSPORT INC | | | SCAC4 |
| 19 | HSAS | HEATON SANITATION LTD | | | SCAC4 |
| 20 | HSAT | HARBOR SHIPPING AND TRADING S A | | | SCAC4 |
| 21 | HSAV | HSB LOGISTIC | | | SCAC4 |
