AeroNav 900/880 Series Pilot’s Guide
89000039-010
Rev 1 May 2019 SVS Subsystem 2-9
Blue Obstacle Threat Bubbles
Obstacles inside a 3nm radius of the aircraft position and whose
top is between 100’ below aircraft altitude and 1000’ below
aircraft altitude will generate a yellow threat bubble over the
obstacle on the SynVis scene and the map pages.
Obstacles inside a 1.5nm radius of the aircraft position and
whose top is between 100’ below aircraft to anything above
aircraft altitude will generate a red threat bubble over the obstacle
on the SynVis scene and the map pages.
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