Eclipse 500 System Manual page 318

Section 14. Primary Flight Display (PFD)
Mach Number
The Mach number is displayed below the airspeed tape as a digital readout with
up to three decimal places, no leading zeros. Mach is displayed with the Mach
number is .450 or above and remains displayed until the Mach decreases to
.400. If Mach number is not displayed, the graphical display disappears.
Trend Vector
A blue airspeed trend vector is displayed slightly to the right of the current
airspeed, such that it is not hidden behind the current airspeed window. This
airspeed trend vector points at the airspeed scale at the predicted airspeed 6
seconds in the future based upon the airspeed change in the last 2 seconds.
298
Figure 181. Mach Indication
Copyright © — Eclipse Aviation Corporation
Eclipse 5OO Systems Manual
Version 2.0 April 2007