Piper ARCHER III Pilot Operating Handbook page 124

SECTION
4
NORMAL
PROCEDURES
PA.28.181, ARCHER
III
4.5j
Climb Checklist
CLIMB
Best rate
(flaps
up)
76 KIAS
Best
angle
(flaps
up)
........,64 KrAS
87
KIAS
FUEL
PUMP
...OFF
at
desired
altitude
For
climbing enroute, a speed
of 87
KIAS
is recommended.
This
will
produce better
forward
speed
and increased
visibility
over the nose
during
the
climb.
4.5k
Cruise Checklist
CRUISING
Power
.......SET PER
POWER
TABLE
MIXTURE.
........ADJUST
The cruising
speed
of
the
ARCHER
III
is determined
by many factors,
including power
setting,
altitude,
temperature,
loading and
equipment
installed
in
the airplane.
The normal maximum cruising power
is
757o
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
in
Section
5.
Use
of
the
mixture control
in
cruising
flight
reduces
fuel
consumption
significantly,
especially at higher altitudes. The
mixture
should be leaned
during cruising operation
above 5000
ft.
altitude
and
at
pilot's
discretion
at
lower
altitudes when
757o
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,
pull
the
mixture
control
aft.
Best economy
mixture is
obtained
by moving
the
mixture control
aft
until
peak
EGT is
reached.
Best power
mixture is
obtained
by
leaning to
peak EGT and then enrichening
until
the
EGT
is
100"F
rich of
the peak
value. Under
some
conditions
of
altitude and
throttle position,
the
engine
may exhibit
roughness before peak
EGT
is reached,
If
this
occurs,
the
EGT
corresponding to
the onset
of
engine roughness
should
be used
as
the peak
reference value.
REPORT:
YB-2749
4-18
ISSUED:
December 22, 2017