| 1 | USW | Special Aviation Works (SAW) | Callsign: Aksar, Name changed to Humo Air | UZ | AVCODES |
| 2 | USW | Humo Air | Callsign: Aksar, Low cost subsidary of Uzbekistan Airways. Name changed from Special Aviation Works (SAW) | UZ | AVCODES |
| 3 | USWD | UNISOURCE WORLDWIDE INC | | | SCAC4 |
| 4 | USWX | USA Waste Services, Inc. | added 10/1996; eliminated 4/1997; 7/2000-7/2005 (not listed) | | NAKINA |
| 5 | USWX | USA Waste Services, Inc. | added 10/96; eliminated 4/97; 7/2000 | | NRHS |
| 6 | USWX | USA WASTE SERVICES INCORPORATED | | | PWRC |
| 7 | USWX | USA Waste Services | | | RSRV |
| 8 | USWX | USA WASTE SERVICES OF NYC | | | SCAC4 |
