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The IATA Operational Safety Audit (IOSA) is the benchmark for global safety management in airlines. All IATA members are registered and must remain registered in order to maintain IATA membership. See the applicability of IOSA standards and recommended practices (ISARPs).
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Found 437 operators
| Name | IATA code | ICAO code | Country / Territory | Region | Expiry Date |
| Spirit Airlines Inc | NK | NKS | United States | The Americas | 30 July 2025 |
| Spring Airlines Co Ltd | 9C | CQH | China (People's Republic of) | China & North Asia | 23 February 2025 |
| SPRINGJET SA | 5K | HFY | Portugal | Europe | 9 September 2024 |
| SriLankan Airlines | UL | ALK | Sri Lanka | Asia Pacific | 26 January 2025 |
| STARLUX AIRLINES CO LTD | JX | SJX | Chinese Taipei | China & North Asia | 10 February 2025 |
| Sun Country Airlines | SY | SCX | United States | The Americas | 2 October 2025 |
| Suparna Airlines Company Limited | Y8 | YZR | China (People's Republic of) | China & North Asia | 2 April 2025 |
| Swiftair, S.A. | WT | SWT | Spain | Europe | 17 March 2025 |
| Swiss International Air Lines Ltd | LX | SWR | Switzerland | Europe | 11 March 2025 |
| TAAG Angola Airlines | DT | DTA | Angola | Africa & Middle East | 22 May 2024 |