| 1 | AIP | Alpine Aviation, Inc. | IATA: 5A, Callsign: Alpine Air, | USA | AVCODES |
| 2 | AIP | Alpine Air Express | IATA: 5A | | ICAO1 |
| 3 | AIPA | AMERICAN ROAD LINES | | | SCAC3 |
| 4 | AIPA | ARL | | | SCAC4 |
| 5 | AIPD | AIRPORT PICK-UP AND DELIVERY SERVIC | | | SCAC3 |
| 6 | AIPD | AIP LOGISTICS LTD | | | SCAC4 |
| 7 | AIPE | AIRPORT EXPRESS | | | SCAC3 |
| 8 | AIPE | AIP SPECIALTIES LLC | | | SCAC4 |
| 9 | AIPG | AIR-MAR SHIPPING INC. | | | SCAC3 |
| 10 | AIPI | AIRPORT DELIVERY INC | | | SCAC3 |
| 11 | AIPL | AIRPLANE SALES & CHARTER CO | | | SCAC3 |
| 12 | AIPM | AIR PRODUCTS & CHEMICALS INC | | | SCAC3 |
| 13 | AIPM | AIR PRODUCTS & CHEMICALS INC | | | SCAC4 |
| 14 | AIPN | A I P TRUCKING INC | | | SCAC3 |
| 15 | AIPQ | AIR POWER INC | | | SCAC3 |
| 16 | AIPR | ALLIED PAPER INC | | | SCAC3 |
| 17 | AIPS | AIRPORT DELIVERY SERVICE INC | | | SCAC3 |
| 18 | AIPT | AIRPORTRAVEL USA INC | | | SCAC3 |
| 19 | AIPU | A.I.P.P INDUSTRIES LTD | | IL | BIC |
| 20 | AIPX | Ferrous Processing and Trading Co. | added 4/2007 | | NAKINA |
| 21 | AIPX | Atlas Iron Processors, Inc. | added 7/1994; eliminated 7/1997; 7/2000-7/2005 (not listed) | | NAKINA |
| 22 | AIPX | Atlas Iron Processors, Inc. | added 7/94; eliminated 7/97; 7/2000 | | NRHS |
| 23 | AIPX | FERROUS PROCESSING & TRADING CO. [ATLAS IRON PROCESSORS, INC.] | | | PWRC |
| 24 | AIPX | Atlas Iron Processors | | | RSRV |
| 25 | AIPX | ATLAS IRON PROCESSORS, INC. | | | SCAC4 |
