MooNEY
@--
OWNERS
MANUAL
At full throttle, setting the powerboost control for ram
air
allows induction air to bypass the
air
filter to add induction
ram air pressure which increases manifold pressure, thus
increasing ceiling altitude.
WARNING: Turn power boost off when encountering
icing conditions. Do not fly this aircraft in known ic-
ing conditions.
Using unfiltered induction
air
when flying in snow or
other
IFR
conditions can be hazardous.
Snow can ac-
cumulate in the fuel injector impact tubes, or mois-
ture can freeze in the inlet passages under icing con-
ditions to cause loss of power. Therefore, do not use
power boost when flying in
sleet,snow, rain, or mois-
ture- laden
air
near freezing temperatures. Under
these conditions, ice can form
inthe inlet duct or fuel
injector impact tubes even though no visible moisture
is
apparent on the airframe.
After establishing climb power and trimming the aircraft
for climb, check to insure that all controls, switches, and
instruments are set and functioning properly.
CRUISE
Careful and detailed flight planning for each trip will in-
crease operating efficiency. The weather, route, load, and
starting and arrival time will affect altitude selection and
over-all flight efficiency.
The performance tables in Section
VI
will aid in selection
of optimum cruise power settings. Cruise power is that
portion of the power spectrum where the mixture may be
leaned; which is to say, leaning is limited to 75 percent
power or less. Leaning the mixture increases engine oper-
ating temperatures. Leaning above 75 percent power may
cause detonation and engine damage. Do not lean below
5000
FT.
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