CESSNA
MODEL 172N
SECTION
6
WEIGHT & BALANCE/
EQUIPMENT LIST
INTRODUCTION
This
section
describes
the
procedure
for establishing the basic empty
weight
and
moment
of
the
airplane.
Sample
forms
are
provided
for refer-
ence. Procedures
for calculating the
weight and moment for
variors
oper-
ations are
also
provided.
A comprehensive
list
of all
Cessna
equipment
available for this airplane is included
at
the back of this
section.
It
should
be noted that
specific
information regarding the weight,
arm,
moment
and
installed equipment
list for this
airplane
can
only
be
found
in
the
appropriate weight and
balance records
carried in the
airplane.
AIRPLANE
WEIGHING
PR,OCEDURES
Preparation:
u
Inflate tires to recommended
operating
pressures.
b.
Remove the fuel tank
sump
quick-drain
fittings
and fuel
selector
valve
drain
plug
to
drain
all
fuel.
c.
Remove
oil
sump
drain
plug
to
drain all
oil,
d.
Move
sliding seats
to the
most forward
position.
e. Raise flaps to the fully
retracted
position.
f. Place
all control
surfaces
in neutral
position.
Leveling:
a-
Place
scales
under each
wheel
(minimum
scale
capacity,
500
pounds
nose,
1000
pounds
each main).
b. Deflate the nose tire
and/or lower or raise the
nose
strut
to
properly
center the bubble
in the level
(see
Figure 6-1).
Weighing:
a. With the
airplane level
and
brakes
released,
record the
weight
shown
on each
scale.
Deduct the tare,
if
any,
from each
reading.
Measuring:
a- Obtain
measurement
A
by measuring
horizontally
(along
the
airplane
center
line) from
a line
stretched
between the
main
wheel centers
to
a
plumb
bob
dropped from the
firewall
b. Obtain
measurement
B
by measuring horizontally
and
paral-
lel
to the
airplane center
line, from center of nose
wheel urle,
Ieft
side,
to
a
plumb
bob
dropped from the line between the
main
wheel centers.
Repeat on
right side and
average
the measure-
ments.
(1)
(2)
(3)
(4)
6-3
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