600-00105-000 Rev 01
-19-
FlightMax EX5000
Leaning for Best Power
1)
In order to lean the engine for best power, begin by pressing the “Lean Assist”
button and smoothly lean the mixture control.
2)
The MFD will annunciate "Looking for 1st Peak" at the top of the temperatures
section of the display.
3)
When leaning for best power, the final mixture setting is based on first cylinder to
peak. As the mixture is leaned look for a rise in EGT.
(For this example assume that cylinder #2 is the first to peak.)
4)
As cylinder #2 peaks the display will annunciate "Best Economy" and the
#2 cylinder bar graph will turn cyan.
5)
At this point the pilot should then begin to richen the mixture.
6)
As the mixture is richened the display will first annunciate “Looking for #2 to Peak
(Rich),” and then “Peak Detected (Rich)” as it determines the peak temperature.
Finally, it will display "Best Power" when the optimum best power mixture has been
achieved, between 80-100° rich of peak.
If the mixture is adjusted too far to the rich side, past the Best Power setting, the
MFD shall annunciate “Rich of Best Power.” The pilot should slowly lean the
mixture until the annunciation switches back to “Best Power.”
7)
After the desired engine lean setting is achieved, press the “Normalize” or
“Absolute” button to exit the Lean Assist function. The Lean State is also displayed
in the “Lean” Map page Datablock.
8)
To return to a Best Economy setting after using Best Power, move the mixture to full
rich and then press the Lean Assist button to go to the beginning of the Lean Assist
procedure.
Engine Instruments - Lean Assist For Best Power
& Data Blocks (Saratoga II HP & Piper 6X)