After the UK’s Brexit departure from the European Union (EU), the country’s participation in the EU’s European Geostationary Navigation Overlay Service (EGNOS) ended and pilots weren’t allowed to use Egnos-based instrument approaches at many airports. Satellite operator Viasat has demonstrated, with the National Flying Laboratory Centre, satellite-based augmentation system (SBAS) high-accuracy positioning services that could lead to UK-developed SBAS approaches.
The airborne testing was done in the National Flight Lab’s Saab 340B twin turboprop using broadcast capability from Viasat’s I-3 F5 satellite. According to Viasat, the "UK SBAS generates an overlay test signal to the U.S. Global Positioning System, fully compliant with International Civil Aviation Organization standards, to enable assessment of more precise, resilient and high-integrity navigation for maritime and aviation users in UK waters and airspace.”
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