Revision A9 40
GRT Avionics Mini-X Installation, Setup & User Manual
5.2 Airspeed Tape
The primary function of the airspeed tape is to display indicated airspeed and its associated color
bands, all of which are fully programmable according to the aircraft design limitations. It also has
several supplemental sources of information to provide the pilot with an intuitive sense of airspeed
change, as well as true airspeed and groundspeed.
The instantaneous airspeed readout is contained in the black box with large, bold numbers. The
digits appear to “roll by” smoothly as speed changes. The units of distance/speed are displayed
below the digital readout. True airspeed (TAS) is displayed in the upper left corner, while GPS
groundspeed is displayed in the lower left corner, as shown below.
Trend Arrow
The trend arrow points to the predicted speed of the aircraft in 5 seconds at the current rate of
acceleration.
V-Speed Reference Markers
The airspeed tape also features three programmable V-speed
reference markers that appear as magenta triangles with letters X,
Y, & G; these stand for for V
X
, V
Y
and V
G
(best glide).
Colored Airspeed Bands
The colored band on the airspeed tape follows the standard airspeed color scheme. The indicated
airspeed value turns yellow or red when it is within the yellow or red ranges for additional emphasis.
Trend Arrow
Ground Speed
Speed/Distance Units
Indicated Airspeed
True Airspeed
Red/Black
Zero to V
S
(full-flap stall speed). Airspeed values too low to register on the EFIS will appear
as a red dash (- -) in the digital readout window. Option: Red or clear.
White
Full-flap stall speed (V
S0
) to flap extension upper airspeed limit (V
FE
)
Green
Stall speed (V
S0
) to maximum structural cruise speed (V
NO
)
Yellow
Maximum structural cruise speed (V
NO
) to never-exceed speed (V
NE
)
Red/Black
Never-exceed (V
NE
) and beyond
