| 1 | OTN | Lastp-Linhas Aereas de Sao Tome E Principe (Sao Tome And Principe Airlines) | Callsign: Lastp, ICAO desigantor changed from STA | STP | AVCODES |
| 2 | OTN | Lastp-Linhas Aereas de Sao Tome E Principe (Sao Tome And Principe Airlines) | IATA: OT, Callsign: Sta, ICAO desigantor changed to STP | STP | AVCODES |
| 3 | OTN | LASTP | | | ICAO1 |
| 4 | OTNB | OLYMPIC TUG AND BARGE INC | | | SCAC3 |
| 5 | OTNC | OVERLAND TRANSPORTATION CO INC | | | SCAC3 |
| 6 | OTNC | ONE THREE NINE NINE ZERO FOUR (1399 | | | SCAC4 |
| 7 | OTNG | OTTINGER, JAY, | | | SCAC3 |
| 8 | OTNS | ORANGE TRANSFER & STORAGE INC | | | SCAC3 |
| 9 | OTNU | MULTIGAS LTD. | | M | BIC |
