| 1 | SEQ | Sky Eyes Co. Ltd. | IATA: I6, Callsign: Sky eyes, | T | AVCODES |
| 2 | SEQ | Sky Eyes Co. Ltd. | Callsign: Sky eyes, Designator I6 recalled by IATA | T | AVCODES |
| 3 | SEQ | Sky Eyes | IATA: I6 | | ICAO1 |
| 4 | SEQA | SEQUOIA AIR FREIGHT | | | SCAC4 |
| 5 | SEQB | SAUNDERS EQUIPMENT LTD | | | SCAC4 |
| 6 | SEQC | SELECT TRANSPORTATION SOLUTIONS INC | | | SCAC4 |
| 7 | SEQD | SPECIALIZED EQUIPMENT RENTAL & DIST | | | SCAC4 |
| 8 | SEQF | STEEL EQUIPMENT SPECIALISTS | | | SCAC4 |
| 9 | SEQL | STEELE ENTERPRISE LLC | | | SCAC4 |
| 10 | SEQP | SIERENS EQUIPMENT LTD | | | SCAC4 |
| 11 | SEQQ | STRATTON EQUITY COOPERATIVE CO | | | SCAC4 |
| 12 | SEQU | Simmonds Equipment | | | RSRV |
| 13 | SEQV | SEA-MAR INC (CONTAINER DIVISION) | | | SCAC4 |
| 14 | SEQX | Sequa Chemicals, Inc. | added 4/1997; 7/2000; eliminated 10/2002; 7/2005 (not listed) | | NAKINA |
| 15 | SEQX | Sequa Chemicals, Inc. | added 4/97; 7/2000 | | NRHS |
| 16 | SEQX | SEQUA CHEMICALS INCORPORATED | | | PWRC |
| 17 | SEQX | Sequa Chemicals | | | RSRV |