Originally Posted by
dartagnan
this video is real or a sim session???
Real, night time
(visual)
conditions.
The limitations of the cockpit cameras and the intentional low brightness setting of the primary HUD guidance can't convey all of the information available to the pilot.
For most/many operators, the HUD airspeed trend cue (aka "worm", aka "nail") makes redundant airspeed callouts by the monitoring pilot, similar to the automatic role of EGPWS altitude callouts.
Several additional videos (in IMC and in VMC) are available at the Gulfstream web site.
http://www.gulfstream.com/gulfstreamevs/