Switzerland’s H2-Sling: Student-Built Hydrogen Fuel Cell Aircraft Readies for Zero-Emission Alpine Flights

The article’s core technical and project claims about ETH Zurich’s H2‑Sling, CELLSIUS, the MINK MH blower, hydrogen system specs, earlier e‑Sling work, and historical hydrogen aircraft (Antares DLR‑H2, HY4) are well supported by independent sources. Timelines and certification status are mostly accurate but some statements about FOCA processes, future EASA impact, and market forecasts are speculative or unreferenced. Overall, the content is largely trustworthy but would benefit from clearer sourcing and qualifiers on predictions.