| 1 | ASS | Air Class, S.A. de C.V. | Callsign: Air Class, | MEX | AVCODES |
| 2 | ASS | Air Sarnia | Callsign: Dodo, | GB | AVCODES |
| 3 | ASS | Air Class, S.A. de C.V. | | | ICAO1 |
| 4 | ASSB | ASSOCIATED BOAT TRANSPORT | | | SCAC3 |
| 5 | ASSB | ASSOCIATED BOAT TRANSPORT | | | SCAC4 |
| 6 | ASSC | ASSOCIATED CARTAGE COMPANY, INC | | | SCAC3 |
| 7 | ASSC | ASSOCIATED CARTAGE COMPANY, INC | | | SCAC4 |
| 8 | ASSE | ASSOCIATED TRANSPORTATION SERVICES | | | SCAC3 |
| 9 | ASSE | ASSA PROVIDENCE | | | SCAC4 |
| 10 | ASSG | ASSOCIATED MANAGEMENT GROUP INC | | | SCAC3 |
| 11 | ASSH | AMERICAN STEAMSHIP COMPANY | | | SCAC3 |
| 12 | ASSH | AMERICAN STEAMSHIP COMPANY | | | SCAC4 |
| 13 | ASSI | ATLANTIC STAR LIMOUSINE SERVICE INC | | | SCAC3 |
| 14 | ASSJ | ASIAN SHIPPING. LTD. | | | SCAC3 |
| 15 | ASSK | ARCTIC SEAL SHIPPING COMPANY | | | SCAC3 |
| 16 | ASSK | ALSTON AND SON TRUCKING | | | SCAC4 |
| 17 | ASSL | ALASSIA STEAMSHIP CO LTD | | | SCAC3 |
| 18 | ASSM | ATS SPECIALIZED INC | | | SCAC4 |
| 19 | ASSO | ASSOCIATE TRANSFER CO | | | SCAC3 |
| 20 | ASSO | ATLAS SERVICE STATION LLC | | | SCAC4 |
| 21 | ASSOCB | Associated Bus Company, NJ | | USA | TRAFFIC |
| 22 | ASSP | ASPILOS SHIPPING CO LTD | | | SCAC3 |
| 23 | ASSQ | ANDERSON SPOTTING SERVICE | | | SCAC3 |
| 24 | ASSQ | ASTRO SHIPMANAGEMENT INC | | | SCAC4 |
| 25 | ASSR | ASSOCIATED TRANSPORT | | | SCAC3 |
| 26 | ASSR | ASSOCIATED TRANSPORT | | | SCAC4 |
| 27 | ASST | AIR SEVEN (7) SEAS TRANSPORT LOGIST | | | SCAC4 |
| 28 | ASSU | SOCIETA AUTOTRASPORTI SPECIALI S.P.A | | I | BIC |
| 29 | ASSU | S A S SOCIETA | | | SCAC4 |
