| 1 | JTT | Jet-2000 | Callsign: Moscow Jet, | RUS | AVCODES |
| 2 | JTT | Jet-2000 | | | ICAO1 |
| 3 | JTTA | JTS TRANSPORT | | | SCAC4 |
| 4 | JTTB | J TWENTY THREE (23) TRANSPORTATION | | | SCAC4 |
| 5 | JTTC | JAT TRUCKING | | | SCAC4 |
| 6 | JTTF | J T TRUCKING LLC | | | SCAC4 |
| 7 | JTTG | J & T TRUCKING LTD | | | SCAC4 |
| 8 | JTTH | J & TWO (2) T'S TRUCKING INC | | | SCAC4 |
| 9 | JTTI | JIT TRANSPORTATION | | | SCAC4 |
| 10 | JTTK | JETA TRUCKING | | | SCAC4 |
| 11 | JTTL | J & T TRANSPORTATION LLC | | | SCAC4 |
| 12 | JTTM | JTT & T | | | SCAC4 |
| 13 | JTTN | J & T TRUCKING | | | SCAC4 |
| 14 | JTTQ | JET TRANSIT CO | | | SCAC1 |
| 15 | JTTQ | JETT PAQUETERIA | | | SCAC4 |
| 16 | JTTS | JETT SALES | | | SCAC4 |
| 17 | JTTX | TTX Co. | added 1/1992; 1/1994-7/2005 | | NAKINA |
| 18 | JTTX | Trailer Train Co. | added 1/1966; 10/1966-1/1980; eliminated 1/1992 | | NAKINA |
| 19 | JTTX | Trailer Train Co. (FMS flat cars specially modified or equipped by members of Trailer Train Co. with miscellaneous devices for special services) | added 1/1966; 10/1966-10/1968 | | NAKINA |
| 20 | JTTX | Trailer Train Co./TTX Co. (flat cars specially modified or equipped by participant railroads with miscellaneous devices for special services) | 4/1970-1/1994 | | NAKINA |
| 21 | JTTX | TTX Co. (flat cars specially modified or equipped by participant railroads with miscellaneous devices for special services, equipped with end of car cush.) | 7/2000 | | NAKINA |
| 22 | JTTX | Trailer Train Co. (FMS flat cars specially modified or equipped by members of Trailer Train Co. with miscellaneous devices for special services | added 1/66; 10/66-10/68 | | NRHS |
| 23 | JTTX | Trailer Train Co. | Apr-70 | | NRHS |
| 24 | JTTX | Trailer Train Co. (flat cars specially modified or equipped by participant railroads with miscellaneous devices for special services) | 1/75-1/80; eliminated 1/92 | | NRHS |
| 25 | JTTX | TTX Co. (flat cars specially modified or equipped by participant railroads with miscellaneous devices for special services) | added 1/92; 1/94 | | NRHS |
| 26 | JTTX | TTX Co. (flat cars specially modified or equipped by participant railroads with miscellaneous devices for special services, equipped with end of car cush.) | Jul-00 | | NRHS |
| 27 | JTTX | TTX COMPANY | | | PWRC |
| 28 | JTTX | Trailer Train (TTX Corporation) | | | RSRV |
| 29 | JTTX | TTX COMPANY | | | SCAC4 |
| 30 | JTTY | JUSTIN TYME TRANSPORTATION | | | SCAC4 |
