| 1 | HLC | Helicap SA | Callsign: Helicap, | F | AVCODES |
| 2 | HLC | Helicap | | | ICAO1 |
| 3 | HLC | HAPAG-LLOYD AG | | | PWRC |
| 4 | HLC | HANAFAN, LILA C | | | SCAC4 |
| 5 | HLCA | HALL, CASEY LEE | | | SCAC4 |
| 6 | HLCB | H & L CHARTER CO INC | | | SCAC4 |
| 7 | HLCD | HALLOCK, C D TRUCKING | | | SCAC4 |
| 8 | HLCF | HEARTLAND CATFISH | | | SCAC4 |
| 9 | HLCG | HARRIS, LEE, TRUCKING CO | | | SCAC1 |
| 10 | HLCG | HARRIS, LEE TRUCKING CO | | | SCAC4 |
| 11 | HLCH | HALL, CHARLES A | | | SCAC4 |
| 12 | HLCI | HIGHLANDER CARRIERS INC | | | SCAC4 |
| 13 | HLCL | HLC CULLIPHER LLC | | | SCAC4 |
| 14 | HLCM | HALL, C M & SONS | | | SCAC4 |
| 15 | HLCN | HELLS CANYON GUIDE SERVICE | | | SCAC4 |
| 16 | HLCO | HAULERS CO INC | | | SCAC4 |
| 17 | HLCP | HELICOPTER FLIGHT SERVICES INC | | | SCAC4 |
| 18 | HLCS | HILLCREST TRANSPORTATION INC | | | SCAC4 |
| 19 | HLCT | HILLCREST TRANSPORT | | | SCAC4 |
| 20 | HLCU | HAPAG LLOYD A.G | | D | BIC |
| 21 | HLCU | HAPAG LLOYD CONTAINER LINE | | | PWRC |
| 22 | HLCU | Hapag-Lloyd | | | RSRV |
| 23 | HLCU | HAPAG-LLOYD A G | | | SCAC1 |
| 24 | HLCU | HAPAG LLOYD A G | | | SCAC4 |
| 25 | HLCV | HARBOUR LINK CONTAINER SERVICES INC | | | SCAC4 |
| 26 | HLCX | Helm Financial Corp. | added 7/1992; 1/1994-7/2005 | | NAKINA |
| 27 | HLCX | Howes Leather Co., Inc. | added 4/1968; eliminated 1/1970 | | NAKINA |
| 28 | HLCX | J.M. Huber Co., Inc. | 7/1937-1/1946 | | NAKINA |
| 29 | HLCX | J.M. Huber Inc. | 7/1935 | | NAKINA |
| 30 | HLCX | J.M. Huber Co. of Louisiana, Inc. | 7/1930-7/1932 | | NAKINA |
| 31 | HLCX | J.M. Huber Inc. | Apr-38 | | NRHS |
| 32 | HLCX | Howes Leather Co., Inc. | added 4/68; eliminated 1/70 | | NRHS |
| 33 | HLCX | Helm Financial Corp. | added 7/92; 1/94-7/2000 | | NRHS |
| 34 | HLCX | *J.M. HUBER CO., INC. | | | PWRC |
| 35 | HLCX | *HOWES LEATHER CO., INC. | | | PWRC |
| 36 | HLCX | +HELM LEASING COMPANY (HELM FINANCIAL CORPORATION) | | | PWRC |
| 37 | HLCX | Helm Leasing | | | RSRV |
| 38 | HLCX | HELM FINANCIAL CORPORATION | | | SCAC4 |
| 39 | HLCX | Helm Financial Corporation | | USA | TRAFFIC |
| 40 | HLCY | HALCYON TRUCKING INC | | | SCAC4 |
| 41 | HLCZ | HARVESTLAND CO-OP | | | PWRC |
