| 1 | SIP | Air Spirit, Inc. | Callsign: Air Spirit, | USA | AVCODES |
| 2 | SIP | Air Spirit | | | ICAO1 |
| 3 | SIPF | SIMPLIFIED EXPRESS INC | | | SCAC4 |
| 4 | SIPG | SHIP DTS | | | SCAC4 |
| 5 | SIPJ | STAR INTERMODAL TRANSPORTATION INC | | | SCAC4 |
| 6 | SIPL | SMITH TRANSPORTATION LLC | | | SCAC4 |
| 7 | SIPM | SIMONS PETROLEUM INC | | | SCAC4 |
| 8 | SIPO | SISIPO TRANSPORTS S DE R L DE C V | | | SCAC4 |
| 9 | SIPP | SIPPIN ENERGY PRODUCTS | | | SCAC4 |
| 10 | SIPPEL | Autobus Sippel GmbH | | D | TRAFFIC |
| 11 | SIPR | STRONG INTERNATIONAL CORPORATION | | | SCAC4 |
| 12 | SIPT | SIPPS TRUCKING | | | SCAC4 |
| 13 | SIPU | PT PERUSAHAAN PELAYARAN NUSANTARA PANURJWAN | | RI | BIC |
| 14 | SIPX | Arrendadora Sipco, S.A. de C.V. | added 7/1994; 7/2000-7/2005 (not listed) | | NAKINA |
| 15 | SIPX | Arrendadora Sipco, S.A. de C.V. | added 7/94; 7/2000 | | NRHS |
| 16 | SIPX | ARRENDADORA SIPCO SA DE CV | | | PWRC |
| 17 | SIPX | Arrendadora Sipco | | | RSRV |
| 18 | SIPX | ARRENDADORA SIPCO, S.A. DE C.V. | | | SCAC4 |
| 19 | SIPZ | SIMPSON PAPER | | | PWRC |
