| 1 | BCK | Priority Aviation Company, Inc. | Callsign: Bankcheck, | USA | AVCODES |
| 2 | BCK | Priority Aviation Company | | | ICAO1 |
| 3 | BCK | Buffalo Creek R.R. | 8/1920-10/1966 & 1/1975; eliminated 10/1977 | | NAKINA |
| 4 | BCK | Consolidated Rail Corp. | 1/1980-1/1994; eliminated 7/1999 | | NAKINA |
| 5 | BCK | Buffalo Creek R.R. | 7/23-10/66 & 1/75 | | NRHS |
| 6 | BCK | Consolidated Rail Corp. | 1/80-1/94; eliminated 7/99 | | NRHS |
| 7 | BCK | CONSOLIDATED RAIL CORP. [BUFFALO CREEK RR] | | | PWRC |
| 8 | BCK | CONSOLIDATED RAIL CORP. [BUFFALO CREEK RY.] | | | PWRC |
| 9 | BCK | Buffalo Creek Railroad (Conrail) | | | RSRV |
| 10 | BCK | BUFFALO CREEK RAILROAD COMPANY, THE | | | SCAC4 |
| 11 | BCK | Buffalo Creek Railroad | | USA | TRAFFIC |
| 12 | BCK | BauCharter Baumaschinen Vermietungs GmbH | | DE | VKM |
| 13 | BCKA | BECK SUPPLIERS INC | | | SCAC4 |
| 14 | BCKB | BUCKLAND LOGISTICS INC | | | SCAC4 |
| 15 | BCKC | BROCK CANDY COMPANY (A CORPORATION) | | | SCAC3 |
| 16 | BCKC | BECKER TRUCKING | | | SCAC4 |
| 17 | BCKD | BECKMANN DISTRIBUTION SERVICE | | | SCAC3 |
| 18 | BCKE | BEAR CREEK TRANSPORT LLC | | | SCAC4 |
| 19 | BCKF | BICKFORD TRANSPORTATION INC | | | SCAC3 |
| 20 | BCKG | BRACKMANN TRUCKING INC | | | SCAC4 |
| 21 | BCKH | BROCKHOUSE TRUCKING | | | SCAC3 |
| 22 | BCKI | BECK TRUCKING CO INC | | | SCAC3 |
| 23 | BCKI | BACK TRUCKING INC | | | SCAC4 |
| 24 | BCKK | BRACKETT TRUCKING | | | SCAC3 |
| 25 | BCKK | BLACK CANYON TRANSPORT INC | | | SCAC4 |
| 26 | BCKL | BRICK CARRIERS LLC | | | SCAC4 |
| 27 | BCKM | BUCKENME | | | SCAC4 |
| 28 | BCKN | BOICKEN, LESTER | | | SCAC3 |
| 29 | BCKN | BICKNELL RACING PRODUCTS | | | SCAC4 |
| 30 | BCKO | BECKMANN, HELMUT | | | SCAC4 |
| 31 | BCKP | BECKER ENTERPRISES | | | SCAC3 |
| 32 | BCKQ | BECK, ROBERT JR | | | SCAC3 |
| 33 | BCKR | BECKER COMPANY, INC | | | SCAC3 |
| 34 | BCKR | BECKER COMPANY, INC | | | SCAC4 |
| 35 | BCKT | BECKER TRUCKING INC | | | SCAC3 |
| 36 | BCKT | BECKER TRUCKING | | | SCAC4 |
| 37 | BCKV | BECK TRANSPORTATION | | | SCAC3 |
| 38 | BCKV | BROCKSTON INTERNATIONAL | | | SCAC4 |
| 39 | BCKY | BUCKEYE PIPE LINE COMPANY L P | | | SCAC3 |
