CHEROKEE
180
SECTION III
To lean
the
mixture, pull
the mixture
control until the
engine
becomes
rough,
indicating
that the lean mixture limit has been reached
in the leaner cylinders. Then enrich the mixture
by
pushing the
control
towards the
instrument
panel
until engine
operation
becomes
smooth.
If
the
airplane
is
equipped
with the optional exhaust
gas
temperature (EGT)
gauge,
a
more
accurate means
of
leaning is
available
to
the
pilot.
For
this procedure, refer
to
the AVCO Lycoming
Operator's
Manual.
In order to keep
the airplane in best lateral
trim
during cruising
flight,
the
fuel
should
be used
alternately
from each tank.
It
is
recommended that
one
tank be
used
for
one
hour after
take-off,
then
the
other tank be used for
two hours,
then
return
to the
first
tank,
which
will have
approximately one
and one half
hours
of
fuel remaining
if
the tanks
were
full at
take-off.
The
second
tank will
contain
approximately
one
half hour
of
fuel.
Do not
run tanks completely
dry
in flight.
APPROACH
AND LANDING
Before
landing
check
list:
1.
Fuel on proper
tank
4. Seat
backs
erect
2.
Mixture
-
rich
5. Flaps
-
set (115
MPH)
3.
Electric fuel
pump
-
on
6. Fasten belts/harness
7.
Air
conditioner
-
off
The airplane should
be trimmed to an approach speed of about
85
MPH
with
flaps up. The
flaps
can be lowered at,speeds
up
to 115 MPH,
if
desired, and the approach
speed
reduced
3
MPH
for each
additional
notch of
flaps.
Carburetor
heat
should
not be
applied unless there
is
an
indication of carburetor
icing,
since the use
of
carburetor heat causes
a
reduction in power which
may
be critical
in case
of
a
go-around.
Full
throttle operation with
heat
on is likely to cause
detonation.
The
amount of
flap used
during
landings and
speed
of
the
aircraft
at contact with the
runway
should be varied
according
to
the
landing
surface and conditions
of wind and airplane loading. It is
generally
good
practice
to
contact
the ground at minimum
possible safe
speed
consistent
with
existing
conditions.
761 513
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720615
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