Piper CHEROKEE ARCHER II Pilot Operating Handbook page 61

PIPER
AIRCRAIIT CORPORATION
PA.28.I8I, CHEROKEE ARCHER
II
SECTION 4
NORMAL
PROCEDURES
4.25
CLIMB
The
besr
rate
of ctimb at gross weight
will
be obtained
at 76 KIAS. The
best angle
of clirnb
may
be
obtained ar 64 KIAS.
At
lighter than
gross weight these speeds are reduced somewhat.
For climbing
en
route,
a speed
of
g7 KIAS is
recommended.
This
will produce better forward
speed
and increased
visibiiity
over
the
nose
during the climb.
When reaching
the desired altitude, the electric fuel pump may be tumed off.
4.27
CRUISTNG
The cruising
speed
of
the
Cherokee
Archer
II
is
determined
by many facton, including power
setting,
altitude, temperature,loading and equipment installed in the airplane.
The normal maximum cruising power is
75Vo
of
the rated horsepower
of
the engine. Airspeeds
which
may be obtained at various altitudes and power
settings
can be determined
from the performance graphs
provided by Section
5.
Use
of
the mixture control
in
cruising
flight
reduces
fuel conzumption significantly,
especially at
higher altitudes. The mixture
strould be leaned during ouising operation
above
5000
ft.
altitude and
at
pilot's discretion at lower altitudes
when
75Vo
power or
less
is being used.
If
any doubt exists
as
to
the
amount
of
power
being used,
the mixture should be
in
the
full "RICH" position for all
operations under
5000 feet.
To
lean the
mixture,
disengage
the lock and 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 instnrment 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."
Always remember
that the
electric fuel pump should be turned
"ON,
before switching tanks, and
should be
left on for a short period thercafter.
In
order
to
keep the airplane
in
best lateral
trim
during
cruising
flight,
the fuel strould be
used
alternatety from
each
tank.
It
is
recommended
that
one tank
be used
for
one
hour after takeoff, 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
takeoff.
The
second
tank
will
contain approximately
one
half hour
of
fuel. Do not run tanks completely
dry in flight.
The electric fuel pump strould be
normdly "OFF"
so
that
any
malfunction of the
engine driven fuel pump
is immediately apparent.
If
signs
of fuel starvation should occur at any time during flight, fuel exhaustion
should be
suspected,
at which time the fuel selector strould be immediately positioned
to
the other tank
and the
electric fuel pump switched to the
"ON" position.
4.2t
DESCENT
NORMAL
To achieve the
performance on Figure
5-29
the power on descent must
bc
used. The
throttlc
should
be
set
for
2500
RPM, mixture full rich
and maintain an airspeed
of
122
KIAS.
In
casc
carburetor
ice
is
encountered
apply
full
carburetor
heat.
IlltrlED:
Jl,rNE 18, 1976
REYISED:
MAY23,lgt0
REFORT:
YF790
+13