Detail of the situation display showing 2 line Data Blocks. 'Easy 16 Xray Papa' is in the PSR 'radar overhead' and only being plotted by the WAM SSR, showing passing Flight Level 292 with Flight Level 350 selected on the autopilot.
'Jersey 3 November Kilo' is being plotted by both PSR & WAM and is level at Flight Level 190 but with Flight Level 150 selected but not activated on the autopilot - ATC instruction would have been 'Descend when ready to FL150'
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An Island Images picture © Jon Wornham