190-02177-02 Rev. A
Garmin G1000 NXi Pilot’s Guide for the Cessna NAV III
47
FLIGHT INSTRUMENTS
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
BARO QFE ALTIMETER SETTING
WARNING
:
Do not use a QFE altimeter setting outside of the terminal environment for the corresponding
issuing airport to ensure adequate obstacle clearance.
BARO QFE is the isobaric surface pressure at the airfield reference point. With BARO QFE set, the altimeter
will read zero at the airfield reference point or the touch-down zone of the runway in use. At other altitudes
the altimeter will read an indication of the height above the reference point. Refer to PFD Annunciations and
Alerting Functions in this section for QFE annunciations.
QFE mode should be enabled and the Baro setting should be set to the QFE setting in conjunction with
each other. This can be done automatically by arming QFE while the baro setting is still set to STD BARO
ahead of time; at the appropriate time set the baro setting on the PFD to the QFE setting when QFE operation
is required. When both baro settings are set to something other than STD BARO with QFE armed, BARO
QFE mode will automatically become active.
When entering QFE VNAV altitude constraints, it is important to note that only the current QFE reference
is used. It is not possible to enter a QFE constraint for the destination while the origin is the current reference.
Therefore, while QFE is active and the QFE reference is the origin:
»
QFE constraints cannot be entered for the destination airport/runway
»
QFE constraints cannot be entered for any arrival/approach waypoints
»
Entering an MSL/AGL constraint for any departure/enroute waypoints displays a message clarifying the
constraint will be shown as a converted QFE value relative to the origin
NOTE:
‘FMS ORIG’ and ‘FMS DEST’ references do not dynamically update with flight plan changes. Always
verify QFE settings when changing the QFE reference (airfield, runway, etc.) or flight plan and re-enter
settings on the ‘Aux - System Setup 1’ Page.
NOTE:
VPTH changes and VSD and/or VNV discontinuities may occur when switching from QNH to QFE
Baro settings.
Setting BARO QFE while on the ground:
1)
Set the appropriate QFE BARO setting on the PFD.
2)
Use the
FMS
Knob to select the ‘Aux - System Setup 1’ Page on the MFD.
3)
Push the
FMS
Knob to activate the cursor.
4)
Turn the large
FMS
Knob to select the ‘REF’ field in the ‘BARO QFE’ Box.
5)
Use the small
FMS
Knob to select ‘Manual’ or ‘FMS ORIG’, and press the
ENT
Key to accept.
6)
If ‘Manual’ was selected, use the
FMS
Knobs to enter the field elevation of the departure airport in the ‘ELEV’
field and press the
ENT
Key.
7)
If ‘FMS ORIG’ was selected, the field elevation of the selected departure airport/runway from the flight plan will
be shown in the ‘BARO QFE’ Box. Verify this information is correct.
8)
The ‘On/Off’ Field will automatically highlight, turn the small
FMS
Knob to change ‘Off’ to ‘On’.
9)
Push the
FMS
Knob to deactivate the cursor. QFE mode is now active.
Ch
ange the BARO setting to STD BARO to disable BARO QFE.
