| 1 | HLE | First Air | Callsign: Helimed, Name changed to UK HEMS | GB | AVCODES |
| 2 | HLE | UK HEMS | Callsign: Helimed, Name changed from First Air | GB | AVCODES |
| 3 | HLE | UK HEMS | | | ICAO1 |
| 4 | HLEB | HOEGH LNG AS | | | SCAC4 |
| 5 | HLEC | HEAVY LOADS EXPRESS LLC | | | SCAC4 |
| 6 | HLEF | LEIF HOEGH & CO A/S | | | SCAC3 |
| 7 | HLEF | LEIF HOEGH & CO A/S | | | SCAC4 |
| 8 | HLEL | HOLLAND EQUIPMENT LIMITED | | | SCAC4 |
| 9 | HLEN | HILLS ENTERPRISES INC OF SOUTHWESTE | | | SCAC4 |
| 10 | HLEP | HAMMER LANE EXPRESS | | | SCAC4 |
| 11 | HLEQ | HOOD LOGGING EQUIPMENT | | | SCAC4 |
| 12 | HLEU | SHIHLIEN FINE CHEMICALS CO. LTD. | | RC | BIC |
| 13 | HLEX | Flint Hills Resources LP | added 1/2009 | | NAKINA |
| 14 | HLEX | Huntsman Polymers Corp. | added 7/2002; 7/2005; eliminated 1/2009 | | NAKINA |
| 15 | HLEX | Huntsman Corp. | added 4/2002; eliminated 7/2002 | | NAKINA |
| 16 | HLEX | Huntsman Polymers Corp. | 7/2000 (not listed); added 1/2001; eliminated 4/2002 | | NAKINA |
| 17 | HLEX | Huntsman Polymers Corp. | 7/2000; added 1/2001 | | NRHS |
| 18 | HLEX | HUNTSMAN POLYMERS CORP. | | | PWRC |
| 19 | HLEX | Hunstman Polymers Corporation | | | RSRV |
| 20 | HLEX | BRASKEM AMERICA INC | | | SCAC4 |
| 21 | HLEY | HALEY INDUSTRIES LTD | | | SCAC4 |
