Ronaldsway Mode-S with three line data blocks. 'Easy16 Xray Papa' is now bing tracked by both PSR & WAM SSR. The third line of its data block is showing: system computed Groundspeed of 497 Knots, aircraft downlinked Indicated Airspeed (IAS) of 275 Knots, aircraft downlinked heading of 132 degrees.
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An Island Images picture © Jon Wornham