| 1 | ADK | Aviation Development Company Plc | IATA: Z7, Callsign: Adco, Name changed to ADC Airlines | WAN | AVCODES |
| 2 | ADK | ADC Airlines | IATA: Z7, Callsign: Adco, Designator Z7* reinstated by IATA. AOC revoked on 30 April 2007. Name changed from Aviation Development Company Plc | WAN | AVCODES |
| 3 | ADK | ADC Airlines | IATA: Z7 | | ICAO1 |
| 4 | ADK | Air Hokkaido | | J | TRAFFIC |
| 5 | ADKB | AD TRUCKING | | | SCAC4 |
| 6 | ADKC | ANDERSON, KEN CONST | | | SCAC3 |
| 7 | ADKD | ANDERSON DIESEL TRUCK SERVICE INC | | | SCAC4 |
| 8 | ADKE | ANDERSON, KENNETH TRUCKING | | | SCAC3 |
| 9 | ADKF | ADKINS FARMS | | | SCAC3 |
| 10 | ADKG | ANDERSON TRUCKING CO | | | SCAC4 |
| 11 | ADKH | ADKINS, HARLAN RICHARD | | | SCAC3 |
| 12 | ADKI | ANDERSON TRUCKING | | | SCAC3 |
| 13 | ADKI | ANDERSON TRUCKING | | | SCAC4 |
| 14 | ADKJ | A & D TRUCKING | | | SCAC3 |
| 15 | ADKK | ADIRONDACK KNITTING MILLS | | | SCAC3 |
| 16 | ADKK | ARCADIA TRUCKING INC | | | SCAC4 |
| 17 | ADKL | ANDERSON TRUCKING LLC | | | SCAC4 |
| 18 | ADKN | ADKINS TRUCKING | | | SCAC3 |
| 19 | ADKP | AMERILAND TRUCKING CORP | | | SCAC4 |
| 20 | ADKQ | ANADARKO | | | SCAC4 |
| 21 | ADKR | ADKINS, R T | | | SCAC3 |
| 22 | ADKS | ADKINS, R E | | | SCAC3 |
| 23 | ADKT | ADKINS TRANSFER, INC | | | SCAC3 |
| 24 | ADKU | ADOKIM KIMYA SANAYI VE TICARET A.S. | | TR | BIC |
| 25 | ADKU | AGA A/S | | | PWRC |
| 26 | ADKU | AGA A/S | | | RSRV |
| 27 | ADKU | AGA A.S. | | | SCAC3 |
| 28 | ADKV | AMROD TRUCKING INC | | | SCAC4 |
| 29 | ADKW | ARMONA DENIZCILIK A S | | | SCAC4 |
