AIRPLANE
OPERATIONS
MANUAL
FLIGHT
INSTRUMENTS
REVISION 39
2-17-15
Page
11
Code
01
AOM-145/1114
VERTICAL SPEED INDICATION
The vertical speed is displayed in analogic and digital formats on the
PFD.
Besides presenting the current vertical speed, the Vertical Speed
Indicator (VSI) also displays target vertical speed and respective bug,
set through the Flight Guidance Controller (refer to section 2-19,
Autopilot).
The PFD VSI also indicates vertical direction and minimum vertical
speed to be attended during evasive maneuvers, according to TCAS
commands. For further information on TCAS, refer to Section 2-4,
Crew Awareness.
1 - ANALOGIC VERTICAL SPEED INDICATION
− Color:
− Scale: white
− Pointer: green
− Ranges from −3000 to +3000 ft/min
− Scale has marks every 500 ft/min up to 3000 ft/min, with labels
every 1000 ft/min.
− The scale is non-linear to provide increased resolution around
zero vertical speed.
2 - DIGITAL VERTICAL SPEED INDICATION
− Color: green
− Ranges from −9999 to +9999 ft/min with a resolution of
50 ft/min.
− Indication is displayed in the center of the scale.
− Indication is displayed when vertical speed exceeds −550 ft/min
or +550 ft/min, and remains until it returns to −500 ft/min or
+500 ft/min.
NOTE: For invalid vertical speed, the pointer and the digital
indication are removed from the display and replaced by a
red boxed V over S.
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