Lean Page - Garmin G1000 Pilot's Manual

ENGINE INDICATION SYSTEM

6.3 LEAN PAGE

NOTE: The pilot should follow the engine man-
ufacturer's recommended leaning procedures in
the Aircraft Flight Manual (AFM).
The Lean is accessed by pressing the LEAN softkey on
the MFD from within the EIS page group. The Lean Page
provides information and a user interface for performing
engine leaning.
The engine gauge(s) and Fuel Quantity Indicator
remain on the Lean Page. The Fuel Flow is listed as a
numeric readout.
EGT and CHT Bar Graphs
EGT and CHT for all cylinders are displayed graphically
and the numeric readouts for the selected cylinder are
provided under the EGT and CHT bar graphs. By default,
the hottest cylinder is selected on the EGT and CHT bar
graphs. Bars are color-coded as follows:
Cyan (light blue) – Selected Cylinder
White – Normal
Yellow – Caution (CHT only)
Red – Warning (CHT only)
For turbocharged aircraft, the TIT Indicator and
readout are shown above the EGT bar graph.
The pilot can utilize the CYL SLCT and ASSIST
softkeys to obtain information about specific cylinders.
6-6
Cylinder Select
The CYL SLCT softkey becomes available after the
LEAN softkey is pressed. The CYL SLCT softkey can
be utilized to obtain EGT and CHT information about a
particular cylinder. Pressing the CYL SLCT softkey cycles
through the cylinders.
This softkey is disabled when a cylinder experiences a
caution (yellow bar on graph) or warning (red) condition,
and remains disabled until the temperature returns to
normal (white).
Assist
The ASSIST softkey becomes available after pressing
the LEAN softkey. The ASSIST softkey aids in the leaning
process by identifying the peak of the first cylinder whose
temperature falls. This cylinder' s bar on the EGT and CHT
bar graphs is highlighted in cyan as the selected cylinder.
If the temperature of the peaked cylinder exceeds the peak
value, the peak value is not updated.
Monitoring of the cylinder continues until the ASSIST
softkey is pressed again. Pressing the ASSIST again will
disable lean assist, remove the peak block from the bar
graph and the ∆PEAK Readout, and returns the readout
to seeking the hottest cylinder.
Garmin G1000 Pilot's Guide for Cessna Nav III
NOTE: The CYL SLCT softkey is disabled when
the ASSIST softkey is pressed.
190-00498-00 Rev. A