Cessna 172P - Page 75

CESSNA
MODEL 172P
AIRPLANE
CONFIGUN,ATION
Takeoff
weight
Usable fuel
TAKEOFF.
CONDITIONS
Field
pressure
altitude
Temperature
Wind component
along runwa,y
Field length
SECTION õ
PER,FOR,MANCE
2350 Pounds
40
Gallons
1õ00 Feet
28"C
(16'C
above
standard)
12 Knot
Headwind
3500 Feet
INTRODUCTION
Performanoe
data
charts on the following
pa,ges
are
presented
so that
you
may know what to
expect from the airplane
under
various
conditions,
and
also, to facilitate
the
planning
of flights in detail and
with
reasonable
accuracy. The data
in the charts has
been computed
from actual
flight tests
with the
airplane and
engine in
good
condition and using average
piloting
techniques.
It should
be noted that
the
performa,nce
information
presented
in
the
range and
endurance
profile
charts
allows for 45 minutes reserve
fuel at
the
specified
power
setting. Fuel flow data for
cruise is based on the
recommended
lean mixture
selting.
Some
indeterminate
variables
such
as
mixture leaning
techniquo,
fuel metering characteristics,
engine end
propeller
condition,
and air turbulence ma,y
a,ccount for variations
of 107o
or
more
in range and
endurance. Therefore, it
is important to
utilize all
available information
to estimate
the fuel required
for the
particular
flight.
USE
OF
PERFORMANCE
CHARTS
Performance data
is
presented
in tabular or
graphical
form
to
illus-
trate the
effect of
different
variables.
Sufficiently detailed
information is
provided
in the tables
so that
conservative values can
be selected
and used
to
determine the
particular
performance
figure
with reasonable accuracy.
SAMPLE PROBLEM
The
following
sample
ftight
probtem
utilizes information from
the
various charts
to
determine
the
predicted
performa,nce
da,ta for a typical
ftight. The following
information
is
known:
30
May 1980
5-3