Pilot's Guide

190-00663-03 Rev. A
Garmin G1000 Pilot’s Guide for the Beechcraft C90A/GT/GTi
419
AUTOMATIC FLIGHT CONTROL SYSTEM
7.3 VERTICAL MODES
Table 7-2 lists the vertical modes with their corresponding controls and annunciations. The mode reference is
displayed next to the active mode annunciation for Altitude Hold, Vertical Speed, and Flight Level Change modes.
The NOSE UP/DN Wheel can be used to change the vertical mode reference while operating under Pitch Hold,
Vertical Speed, or Flight Level Change Mode.
Vertical Mode Description Control Annunciation
Reference
Range
Reference
Change
Increment
Pitch Hold
Holds the current aircraft pitch
attitude; may be used to climb/
descend to the Selected Altitude
(default) PIT
-15° to
+20°
0.5°
Selected Altitude Capture Captures the Selected Altitude * ALTS
Altitude Hold Holds the current Altitude Reference ALT Key ALT nnnnn fT
Vertical Speed
Maintains the current aircraft vertical
speed; may be used to climb/descend
to the Selected Altitude
VS Key VS nnnn fpm
-4000 to
+4000 fpm
100 fpm
Flight Level Change, IAS Hold
Maintains the current aircraft
airspeed (in IAS or Mach) while the
aircraft is climbing/descending to the
Selected Altitude
FLC Key
FLC nnn kT
90 to
226 kt
1 kt
Flight Level Change, Mach Hold FLC M .nnn
M 0.25 to
0.46
M 0.01
Vertical Path Tracking
Captures and tracks descent legs of
an active vertical profile
VNV
Key
VPTH
VNV Target Altitude Capture
Captures the Vertical Navigation
(VNV) Target Altitude
** ALTV
Glidepath
Captures and tracks the SBAS and
baro-VNAV glidepaths on approach
APR
Key
GP
Glideslope
Captures and tracks the ILS glideslope
on approach
GS
Takeoff
Commands a constant pitch angle
and wings level on the ground in
preparation for takeoff
GA
Button
TO 8.6°
Go Around***
Disconnects the autopilot and
commands a constant pitch angle
and wings level in the air
GA 8°
Level
Autopilot engages and commands
pitch angle necessary to establish
zero vertical fpm
**** LVL N/A
* ALTS armed automatically when PIT, VS, FLC, TO, or GA active, and under VPTH when Selected Altitude is to be captured
instead of VNV Target Altitude
** ALTV armed automatically under VPTH when VNV Target Altitude is to be captured instead of Selected Altitude
*** When Underspeed Protection is installed, pressing the GA button in the air will not disconnect the autopilot.
**** Level mode can only become activated as a function of Electronic Stability and Protection (ESP). Refer to the Additional
Features section for a detailed discussion of the optional ESP feature.
Table 7-2 Flight Director Vertical Modes