| 1 | HBA | Trail Lake Flying Service, Inc. d/b/a Harbor Air | Callsign: Harbor Air, | USA | AVCODES |
| 2 | HBA | Trail Lake Flying Service | | | ICAO1 |
| 3 | HBA | Hafenbetrieb Aken GmbH | | DE | VKM |
| 4 | HBAE | HITCHEN, B T TRUCKING | | | SCAC4 |
| 5 | HBAI | H BAR N INC | | | SCAC4 |
| 6 | HBAM | HILDEBRAND, A & M LTD | | | SCAC4 |
| 7 | HBAR | HUBBARD TRANSPORT LLC | | | SCAC4 |
| 8 | HBAU | Hartung-Bau GmbH & Co. KG | | DE | VKM |
| 9 | HBAW | HELICON BU | | | SCAC4 |
| 10 | HBAX | Hirsch Bros. & Co. | 4/1947-4/1961; eliminated 7/1963 | | NAKINA |
| 11 | HBAX | Hirsch Bros. & Co., Inc. | 7/1935 | | NAKINA |
| 12 | HBAX | Hirsch Bros. & Co. | 1/52-4/61; eliminated 7/63 | | NRHS |
| 13 | HBAX | HIRSCH BROS. & CO. | | | PWRC |
