| 1 | APA | Air Park Aviation Ltd. | Callsign: Can-Am, | CDN | AVCODES |
| 2 | APA | Air Park Aviation Ltd. | | | ICAO1 |
| 3 | APA | Apache Ry. Co. | 1/1975-7/2005 | | NAKINA |
| 4 | APA | Apache Ry. Co. | 1/75-7/2000 | | NRHS |
| 5 | APA | APACHE RAILWAY COMPANY | | | PWRC |
| 6 | APA | Apache Railway | | | RSRV |
| 7 | APA | APACHE RAILWAY COMPANY | | | SCAC4 |
| 8 | APA | Apache Railway Company | | USA | TRAFFIC |
| 9 | APAA | APEXNORTH LLC | | | SCAC4 |
| 10 | APAB | A P A INTERMODAL | | | SCAC4 |
| 11 | APAC | A-P-A TRANSPORT CORP | | | SCAC3 |
| 12 | APAC | AG PARTNERS COOP | | | SCAC4 |
| 13 | APACSA | Apacsa Agrolineas del Pacifico SA | | EC | TRAFFIC |
| 14 | APAD | AMERICAN PRESIDENT AUTOMOTIVE DISTR | | | SCAC3 |
| 15 | APAD | APL LOGISTICS TRANSPORTATION MANAGE | | | SCAC4 |
| 16 | APAE | APACHE EXPRESS LTD | | | SCAC3 |
| 17 | APAF | ASIAN PACIFIC EXPRESS INC. | | | SCAC3 |
| 18 | APAF | AMERICA PLUS BROKERAGE INC | | | SCAC4 |
| 19 | APAH | APACHE TANKER CORP OF MONROVIA LIB | | | SCAC3 |
| 20 | APAI | ATLANTIC PACIFIC TRUCKING | | | SCAC3 |
| 21 | APAI | APOSTLES OF INFINITE LOVE, THE | | | SCAC4 |
| 22 | APAJ | ADAPT TRANSPORT CORP | | | SCAC4 |
| 23 | APAL | ALLIANCE PASTEX LLC | | | SCAC4 |
| 24 | APAM | APACE MOVING SYSTEMS INC | | | SCAC3 |
| 25 | APAM | Apam Esercizio SpA | City: Mantova | I | TRAFFIC |
| 26 | APAN | APACA INC | | | SCAC3 |
| 27 | APAN | APACA MOVING & STORAGE INC | | | SCAC4 |
| 28 | APAO | APPLE AUTO SALES | | | SCAC3 |
| 29 | APAO | ALPENA OIL CO INC | | | SCAC4 |
| 30 | APAP | ASPEN APPLIANCE INSTALLATION INC | | | SCAC3 |
| 31 | APAQ | AMPAC TRANSPORTATION INC | | | SCAC4 |
| 32 | APAR | APOLLO AIR LOGISTICS | | | SCAC3 |
| 33 | APAS | ARPIN, PAUL & SONS STORAGE WAREHOUS | | | SCAC3 |
| 34 | APAT | AUTO PURCHASING AGENCY, INC | | | SCAC3 |
| 35 | APAT | ALPINE AEROTECH LTD | | | SCAC4 |
| 36 | APAU | APR ENERGY LLC | | USA | BIC |
| 37 | APAU | APR Energy | | | RSRV |
| 38 | APAV | AIMPACIFIC SERVICES INC | | | SCAC4 |
| 39 | APAW | A-P-A WORLD TRANSPORT CORP | | | SCAC3 |
| 40 | APAW | AUTUMN TRANSPORT LTD | | | SCAC4 |
| 41 | APAX | Cementos Apasco S.A. de C.V. | 7/2000-7/2005 (not listed) | | NAKINA |
| 42 | APAX | Associated Packers, Inc. | 7/1932 | | NAKINA |
| 43 | APAX | West Penn Power Co. | added 1/1976; 1/1980-1/1994; eliminated 7/1995 | | NAKINA |
| 44 | APAX | West Penn Power Co. | 1/80-1/94; eliminated 7/95 | | NRHS |
| 45 | APAX | Cementos Apasco S.A. de C.V. | Jul-00 | | NRHS |
| 46 | APAX | *ASSOCIATED PACKERS, INC. | | | PWRC |
| 47 | APAX | *WEST PENN POWER CO. | | | PWRC |
| 48 | APAX | +CEMENTOS APASCO S.A. de C.V. | | | PWRC |
| 49 | APAX | Associated Packers (Cementos Apasco) | | | RSRV |
| 50 | APAX | CEMENTOS APASCO SA DE CV | | | SCAC4 |
| 51 | APAXX | Associated Packers (Cementos Apasco) | | | RSRV |
| 52 | APAY | ALPHA SHIPPING AGENCY INC | | | SCAC3 |
