Beneļ¬ts for Greek Regional Airports Through Innovative Approach Technology Using an LPV to GLS Converter: A Case... Figure 5. Multimode receiver data from the approaches flown on February 14, 2020, in Thessaloniki. The gray shaded areas indicate that the aircraft was in the precision approach region (top). Protection levels and alert limits (middle) Angular Deviations calculated my the GLS algorithms. The arrows indicate the maximum possible indication to the pilots (bottom) altitude above the WGS84 ellipsoid. rectangular deviations in meters, in order to depict the actual displacement in an easy to visualize manner. CONCLUSIONS Both ground and flight tests yielded results as expected with a good availability (>97%) and integrity (no 42 violations). Only a small percentage of availability is lost even in the inflated case. When evaluating the simulated MMR data from the flight test, system behavior was as expected. As shown in the section " Current Siltation in Greece- Corfu and Thessalokini Airports, " a total of 65 flights were affected by the current approach minimum at Corfu airport from 2017-2019. In the same time span a total of IEEE A&E SYSTEMS MAGAZINE APRIL 2021