FLIGHT
INSTRUMENTS
AIRPLANE
OPERATIONS
MANUAL
2-17-15
Page
2
Code
01
REVISION 39
AOM-145/1114
AIRSPEED INDICATION
SPEED INDICATION ON THE PFD
The KIAS and Mach number are displayed in tape format on the
PFDs. The speed tape also displays target speed and respective
speed bug, set through the Flight Guidance Controller (refer to section
2-19, Autopilot), reference speed bugs, to be used during takeoff and
landing operations (refer to “speed bugs setting through MFD”, in this
section), speed trending vector and overspeed visual warnings.
1 - OVERSPEED INDICATION BAR
− Color: red
− Extends from V
MO
/M
MO
to higher airspeeds on the scale. If the
airplane exceeds V
MO
/M
MO
, the digits in the airspeed window
and the digital Mach readout will be displayed in red, and an
aural warning will be triggered. If the acceleration trend vector
exceeds V
MO
or M
MO
, the digits in the airspeed window and the
digital Mach readout are displayed in amber.
2 - AIRSPEED SCALE AND VERTICAL TAPE
− Color:
− Scale: white
− Tape: gray
− Ranges from 40 to 400 KIAS with a resolution of 10 KIAS.
− The vertical tape provides a trend indication of IAS and displays
digital airspeed each 20 KIAS.
3 - AIRSPEED TREND VECTOR
− Color: magenta
− The airspeed trend vector is an indication of the acceleration
direction and it represents the airspeed that the airplane would
attain in 10 seconds if the current airplane acceleration is
maintained.
− The trend vector extends vertically from the center of the
airspeed vertical tape.
− Extends upward for positive acceleration and downward for
negative acceleration.
− Disabled during takeoff.
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