Embraer EMB145 Operation Manual page 2634

AUTOPILOT
An altitude pre-selector overshoot may occur when the following
conditions are applied:
− SPD mode engaged and;
− Autopilot disengaged and;
− Relative delay to follow the Flight Director at initial descent and;
− Descent rate greater than 6000 ft/min.
VERTICAL SPEED HOLD MODE (VS)
The Vertical Speed hold mode is used to maintain or to make changes
to the vertical speed. The Vertical Speed hold mode ranges from
–6000 to +6000 ft/min, with a resolution of 100 ft/min.
The Vertical Speed Hold mode is selected by pressing the VS button
on the Flight Guidance Controller or automatically, when FLC button is
pressed and the preselected altitude is below the current altitude. This
mode is annunciated on the PFD by the VS label.
Selection of this mode cancels other vertical modes, except the
altitude preselect arm and Glide Slope arm.
Vertical speed may be changed by using the Speed Set knob, on the
flight guidance controller.
The following protections are provided with this mode:
− Maximum airspeed: V
− Minimum airspeed: Shaker actuation speed.
The mode will be canceled or inhibited if any of the following
conditions occur:
− Pressing the VS button.
− Selecting ALT, SPD, or FLC modes.
− Altitude preselect capture.
− Glide slope capture.
− When air data is invalid.
− Pressing the Go Around Button.
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2-19-10 12
AIRPLANE
OPERATIONS
MANUAL
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MO
Code
01 REVISION 40