Specifications
CHEROKEE
SIX.3OO
OPERATING
TIPS
The
following Operating Tips are
of
particular
value
in
the
operation
of the
Cherokee
PA-32-300.
l. Learn to
trim for takeoff so
that
only
a very
light back
pressure
on
the
wheel
is
required
to
lift the
airplane
off
the
ground.
The
best
speed
for
takeoff is
about 70
MPH
under
normal
conditions.
Trying to
pull
the airplane
off
the
ground
at
too
low
an
airspeed
decreases
the
controllability of
the
airplane
in
event of engine
failure.
Flaps may be
lowered
at
airspeeds
up
to
125 MPH. To reduce flap
operating
loads, it
is desirable to
have the airplane
at a
slower
speed before extending the flaps.
Before attempting to
reset any circuit breaker,
allow a
two
to
five minute cooling off
period.
Before
starting the
engine,
check that
all
radio
switches,
light
switches and the
pitot
heat switch are
in
the
off
position
so
as
not
to create an overloaded
condition
when
the
starter is
engaged.
The overvoltage
relay
is
provided
to
protect
the
electronics equipment
from
a
momentary
overvoltage
condition
(approximately
16.5
volts and
up),
or a
catastrophic regulator failure. In
the
event
of
a
momentary
condition,
the
relay will
open and the ammeter
will
indicate
"0"
output
from the
alternator. The
relay
may
be
reset
by
switching the ALT switch to OFF for
approximately
one second and
then
retuming
the
ALT
switch
to ON.
If after
recycling
the
ALT switch the condition
persists,
the flight
should be
terminated as
soon as
practical.
Reduce the
battery load
to a
minimum.
The ALT
light
on
the
annunciator
panel*
will
illuminate if
the
alternator
fails. Recycle the
ALT
switch and
check
the
ALT
FIELD
circuit
breaker. If
the
failure
persists
after
this
action,
reduce
electrical
loads and
land as soon as
practical.
The
vacuum
gauge
is
provided
to
monitor
the
pressure
available to
assure the
correct
operating speed of the vacuum
driven
gyroscopic
flight instruments.It
also monitors
the condition of
the common
air
filter
by
measuring the
flow of air
through
the
filter.
If
the
vacuum
gauge
does not register
5"
t
.10"
Hg
at
2000
RPM, the following
items
should be checked
before flight:
a.
Common
air
filter
could
be dirty
or
restricted.
b.
Vacuum
lines could be collapsed
or
broken.
c. Vacuum
pump
worn.
d. Vacuum
regulator,
not
adjusted
correctly. The
pressure,
even
though set
corectly, can
read
lower under
two conditions:
(l)
Very high altitude,
above
12000
feet,
(2)
Low
engine
RPM, usually
on approach
or
during
training
maneuvers. This is normal
and
should not be considered
a
malfunction.
*Serial
nos.
7540001 and up
OPERATING
TIPS
REYISED:
JULY
t7.1975
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