Garmin G1000 NXi Pilot’s Guide for the Cessna NAV III
190-02177-02 Rev. A
373
AUTOMATIC FLIGHT CONTROL SYSTEM
SY
STEM
O
VER
VIEW
FLIGHT
INSTRUMENTS
EIS
AUDIO P
ANEL
& CNS
FLIGHT
MANA
GEMENT
HAZARD
AV
OID
ANCE
AFCS
ADDITIONAL
FEA
TURES
APPENDICES
INDEX
Figure 7-7 Altitude Hold Mode
Selected
Altitude
Bug
Selected
Altitude
Altitude Hold
Mode Active
Altitude
Reference
Command Bars Hold Pitch Attitude to
Maintain Altitude Reference
VERTICAL SPEED MODE (VS)
In Vertical Speed Mode, the flight director acquires and maintains a Vertical Speed Reference. Current
aircraft vertical speed (to the nearest 100 fpm) becomes the Vertical Speed Reference at the moment of Vertical
Speed Mode activation. This mode may be used for climb or descent to the Selected Altitude (shown above
the Altimeter) since Selected Altitude Capture Mode is automatically armed when Vertical Speed Mode is
selected.
When Vertical Speed Mode is activated by pressing the
VS
Key, ‘VS’ is annunciated in green in the AFCS
Status Box along with the Vertical Speed Reference. The Vertical Speed Reference is also displayed above the
Vertical Speed Indicator. A Vertical Speed Reference Bug corresponding to the Vertical Speed Reference is
shown on the indicator.
c
hanging
the
v
ertical
s
peeD
r
eFerence
The Vertical Speed Reference (shown both in the AFCS Status Box and above the Vertical Speed Indicator)
may be changed by:
Using the
NOSE UP/NOSE DN
Keys.
Pressing the
CWS
Button, hand-flying the aircraft to attain a new Vertical Speed Reference, then releasing
the
CWS
Button.
NOTE:
If the Selected Altitude is reached during CWS maneuvering, the Altitude Reference is not changed.
To adjust the Altitude Reference in this case, the
CWS
Switch must be pressed again after the Selected
Altitude is reached.