| 1 | ADN | Aero-Dienst GmbH | Callsign: Aerodienst, | D | AVCODES |
| 2 | ADN | Aerodienst GmbH | | | ICAO1 |
| 3 | ADN | Arkansas Louisiana & Mississippi R.R. Co. | added 10/1996; 7/2000-7/2005 | | NAKINA |
| 4 | ADN | Ashley, Drew & Northern Ry. Co. | 1/1975-1/1994; eliminated 10/1996 | | NAKINA |
| 5 | ADN | Ashley, Drew & Northern Ry. Co. | 1/75-1/94; eliminated 10/96 | | NRHS |
| 6 | ADN | Arkansas Louisiana & Mississippi R.R. Co. | added 10/96; 7/2000 | | NRHS |
| 7 | ADN | ARKANSAS LOUISIANA & MISSISSIPPI RAILROAD CO. [ASHLEY, DREW & NORTHERN RWY] | | | PWRC |
| 8 | ADN | Ashley, Drew and Northern Railway (Arkansas, Louisiana and Mississippi Railroad) | | | RSRV |
| 9 | ADN | Ashley, Drew & Northern Ry. Co. | | USA | TRAFFIC |
| 10 | ADNA | ADAMS & ASSOCIATES INC | | | SCAC3 |
| 11 | ADNB | ALADDIN BUS LINE | | | SCAC3 |
| 12 | ADNB | ANDERSON TRANSPORT | | | SCAC4 |
| 13 | ADNC | ALDNM TRANSPORT INC | | | SCAC4 |
| 14 | ADND | ARNESON, DELL INC | | | SCAC3 |
| 15 | ADNE | ALMARE DE NAVIGAZIONE SPA | | | SCAC3 |
| 16 | ADNE | A & D TRANSPORTATION | | | SCAC4 |
| 17 | ADNF | ASSOCIATED CONTAINER TRANSPORT INC | | | SCAC4 |
| 18 | ADNG | ADDINGTON, SONNY TRUCKING INC | | | SCAC3 |
| 19 | ADNG | ADDINGTON, SONNY TRUCKING INC | | | SCAC4 |
| 20 | ADNH | ADEN TRUCKING CO | | | SCAC3 |
| 21 | ADNJ | ALADON TRANSFER SERVICES INC | | | SCAC3 |
| 22 | ADNJ | ADSA INC | | | SCAC4 |
| 23 | ADNK | ANDINO CHEMICAL TANKERS INC. | | | SCAC3 |
| 24 | ADNL | ADVENTURE-LAN TRAVEL INC | | | SCAC3 |
| 25 | ADNL | ADESCO OF NORTH AMERICA LTD | | | SCAC4 |
| 26 | ADNM | ADDISON FORWARDING COMPANY INC | | | SCAC3 |
| 27 | ADNP | ALDANE LIMOUSINE SERVICE INC | | | SCAC3 |
| 28 | ADNP | ADVANCED TRANSPORTATION | | | SCAC4 |
| 29 | ADNQ | ANDERSONS TRANSFER | | | SCAC3 |
| 30 | ADNQ | ANDERSONS TRANSFER | | | SCAC4 |
| 31 | ADNR | ADRIAN TRUCKING INC | | | SCAC4 |
| 32 | ADNS | ANDRUS, DOUG DISTRIBUTING INC | | | SCAC3 |
| 33 | ADNS | ANDRUS, DOUG DISTRIBUTING LLC | | | SCAC4 |
| 34 | ADNT | ALLISON, DEAN TRUCKING COMPANY INC | | | SCAC3 |
| 35 | ADNT | ATLANTIC DISTRIBUTION SYSTEMS INC | | | SCAC4 |
| 36 | ADNU | ADRIATICA S.P.A. | | | SCAC3 |
| 37 | ADNU | ADRIATICA S.P.A. | | | SCAC4 |
| 38 | ADNV | ALL DAY-ALL NIGHT MOVING & STORAGE | | | SCAC3 |
| 39 | ADNW | ANDERSON TRUCKING | | | SCAC3 |
| 40 | ADNW | AROOSTOOK DOORS & WINDOWS | | | SCAC4 |
