Beechcraft Baron G58 Pilot Operating Handbook page 381

Model G58
ALT (Altitude Hold Mode) - Engages and disengages the Alti-
tude Hold Mode. The Altitude Hold mode is used to maintain a
selected altitude. Once engaged, the altitude will be main-
tained regardless of changes in the Altitude Selector (using the
ALT knob), or changes in the Baro setting. When the Altitude
Hold mode is selected the green [ALT] and the current altitude
[XXXXX ] are displayed in the AFCS Status Bar.
FT
VNV (Vertical Navigation Mode) (If Installed) - Selects or dese-
lects the Vertical Navigation mode. The Vertical Navigation
mode is used for vertical guidance during the enroute and ter-
minal phase of flight. When VNV is selected, vertical path
tracking is armed in preparation for descent capture. White
[VPTH] is annunciated in addition to previously armed modes.
Within five minutes prior to descent path interception, the
selected altitude must be set below the current airplane alti-
tude. One minute prior to the top-of-descent (TOD), the mes-
sage "TOD within 1 minute" displays in the PFD Navigation
Status Box accompanied by the "Vertical Track" voice mes-
sage. VNV indications (target altitude, vertical deviation speed
required) appear on the PFD in magenta. When the vertical
profile is captured, green [VPTH] becomes active and white
[ALTS] or [ALTV] is armed as appropriate.
VS (Vertical Speed Mode) - Engages and disengages the Ver-
tical Speed Mode. The Vertical Speed mode is used to main-
tain a desired vertical speed. The vertical speed existing at the
time of activation is maintained until adjusted. The vertical
speed may be adjusted using:
1. The CWS button
2. The NOSE UP and NOSE DN keys (Each press of the
NOSE UP key increases the selected vertical speed by
100 fpm. Each press of the NOSE DN key decreases the
vertical speed by 100 fpm.)
When the Vertical Speed mode is selected, the green [VS] and
the current vertical speed [XXXX
May, 2015
Systems Description
] are displayed in the
FPM
Section 7
7-81